Municipal Separate Storm Sewer Systems (MS4s) within ...



Municipal Separate Storm Sewer Systems (MS4s) within Urbanized Areas in Pennsylvania,

Grouped by Region

Southeast Region:

Bucks, Chester, Delaware, Montgomery, and Philadelphia Counties

|County Name |Municipality Name |Urbanized Area Name |

|Bucks |Bensalem Twp. |Philadelphia |

|Bucks |Bristol Boro |Philadelphia |

|Bucks |Bristol Twp. |Philadelphia |

|Bucks |Buckingham Twp. |Philadelphia |

|Bucks |Bucks County |Philadelphia AND Trenton |

|Bucks |Chalfont Boro |Philadelphia |

|Bucks |Doylestown Boro |Philadelphia |

|Bucks |Doylestown Twp. |Philadelphia |

|Bucks |East Rockhill Twp. |Philadelphia |

|Bucks |Falls Twp. |Philadelphia |

|Bucks |Falls Twp. |Philadelphia AND Trenton |

|Bucks |Hilltown Twp. |Philadelphia |

|Bucks |Hulmeville Boro |Philadelphia |

|Bucks |Ivyland Boro |Philadelphia |

|Bucks |Langhorne Boro |Philadelphia |

|Bucks |Langhorne Manor Boro |Philadelphia |

|Bucks |Lower Makefield Twp. |Philadelphia AND Trenton |

|Bucks |Lower Southampton Twp. |Philadelphia |

|Bucks |Middletown Twp. |Philadelphia |

|Bucks |Milford Twp. |Allentown/Bethlehem |

|Bucks |Morrisville Boro |Philadelphia AND Trenton |

|Bucks |New Britain Boro |Philadelphia |

|Bucks |New Britain Twp. |Philadelphia |

|Bucks |Newtown Boro |Philadelphia |

|Bucks |Newtown Twp. |Philadelphia |

|Bucks |Northampton Twp. |Philadelphia |

|Bucks |Penndel Boro |Philadelphia |

|Bucks |Perkasie Boro |Philadelphia |

|Bucks |Plumstead Twp. |Philadelphia |

|Bucks |Quakertown Boro |Allentown/Bethlehem |

|Bucks |Richland Twp. |Allentown/Bethlehem |

|Bucks |Sellersville Boro |Philadelphia |

|Bucks |Silverdale Boro |Philadelphia |

|Bucks |Solebury Twp. |Philadelphia |

|Bucks |Springfield Twp. |Allentown/Bethlehem |

|Bucks |Trumbauersville Boro |Allentown/Bethlehem |

|Bucks |Tullytown Boro |Philadelphia |

|Bucks |Upper Makefield Twp. |Philadelphia AND Trenton |

|Bucks |Upper Southampton Twp. |Philadelphia |

|Bucks |Warminster Twp. |Philadelphia |

|Bucks |Warrington Twp. |Philadelphia |

|Bucks |Warwick Twp. |Philadelphia |

|Bucks |West Rockhill Twp. |Philadelphia |

|Bucks |Wrightstown Twp. |Philadelphia |

|Bucks |Yardley Boro |Philadelphia |

|Bucks |Yardley Boro |Philadelphia AND Trenton |

|Chester |Avondale Boro |Philadelphia |

|Chester |Birmingham Twp. |Philadelphia |

|Chester |Caln Twp. |Philadelphia |

|Chester |Charlestown Twp. |Philadelphia |

|Chester |Chester County |Philadelphia AND Pottstown AND Wilmington |

|Chester |Coatesville City |Philadelphia |

|Chester |Downingtown Boro |Philadelphia |

|Chester |East Bradford Twp. |Philadelphia |

|Chester |East Brandywine Twp. |Philadelphia |

|Chester |East Caln Twp. |Philadelphia |

|Chester |East Coventry Twp. |Philadelphia AND Pottstown |

|Chester |East Fallowfield Twp. |Philadelphia |

|Chester |East Goshen Twp. |Philadelphia |

|Chester |East Marlborough Twp. |Philadelphia |

|Chester |East Pikeland Twp. |Philadelphia |

|Chester |East Vincent Twp. |Philadelphia |

|Chester |East Whiteland Twp. |Philadelphia |

|Chester |Easttown Twp. |Philadelphia |

|Chester |Franklin Twp. |Philadelphia |

|Chester |Honeybrook Twp. |Philadelphia |

|Chester |Kennett Square Boro |Philadelphia |

|Chester |Kennett Twp. |Philadelphia |

|Chester |London Britain Twp. |Philadelphia AND Wilmington |

|Chester |London Grove Twp. |Philadelphia |

|Chester |Malvern Boro |Philadelphia |

|Chester |Modena Boro |Philadelphia |

|Chester |New Garden Twp. |Philadelphia AND Wilmington |

|Chester |New London Twp. |Philadelphia |

|Chester |Newlin Twp. |Philadelphia |

|Chester |North Coventry Twp. |Pottstown |

|Chester |Parkesburg Boro |Philadelphia |

|Chester |Penn Twp. |Philadelphia |

|Chester |Pennsbury Twp. |Philadelphia |

|Chester |Phoenixville Boro |Philadelphia |

|Chester |Pocopson Twp. |Philadelphia |

|Chester |Sadsbury Twp. |Philadelphia |

|Chester |Schuylkill Twp. |Philadelphia |

|Chester |South Coatesville Boro |Philadelphia |

|Chester |South Coventry Twp. |Pottstown |

|Chester |Spring City Boro |Philadelphia |

|Chester |Thornbury Twp. |Philadelphia |

|Chester |Tredyffrin Twp. |Philadelphia |

|Chester |Upper Oxford Twp. |Philadelphia |

|Chester |Upper Uwchlan Twp. |Philadelphia |

|Chester |Uwchlan Twp. |Philadelphia |

|Chester |Valley Twp. |Philadelphia |

|Chester |Wallace Twp. |Philadelphia |

|Chester |West Bradford Twp. |Philadelphia |

|Chester |West Brandywine Twp. |Philadelphia |

|Chester |West Caln Twp. |Philadelphia |

|Chester |West Chester Boro |Philadelphia |

|Chester |West Goshen Twp. |Philadelphia |

|Chester |West Grove Boro |Philadelphia |

|Chester |West Pikeland Twp. |Philadelphia |

|Chester |West Sadsbury Twp. |Philadelphia |

|Chester |West Vincent Twp. |Philadelphia |

|Chester |West Whiteland Twp. |Philadelphia |

|Chester |Westtown Twp. |Philadelphia |

|Chester |Willistown Twp. |Philadelphia |

|Delaware |Aldan Boro |Philadelphia |

|Delaware |Aston Twp. |Philadelphia |

|Delaware |Bethel Twp. |Philadelphia AND Wilmington |

|Delaware |Brookhaven Boro |Philadelphia |

|Delaware |Chadds Ford Twp. |Philadelphia |

|Delaware |Chester City |Philadelphia |

|Delaware |Chester Heights Boro |Philadelphia |

|Delaware |Chester Twp. |Philadelphia |

|Delaware |Clifton Heights Boro |Philadelphia |

|Delaware |Collingdale Boro |Philadelphia |

|Delaware |Colwyn Boro |Philadelphia |

|Delaware |Concord Twp. |Philadelphia AND Wilmington |

|Delaware |Darby Boro |Philadelphia |

|Delaware |Darby Twp. |Philadelphia |

|Delaware |Delaware County |Philadelphia AND Wilmington |

|Delaware |East Lansdowne Boro |Philadelphia |

|Delaware |Eddystone Boro |Philadelphia |

|Delaware |Edgmont Twp. |Philadelphia |

|Delaware |Folcroft Boro |Philadelphia |

|Delaware |Glenolden Boro |Philadelphia |

|Delaware |Haverford Twp. |Philadelphia |

|Delaware |Lansdowne Boro |Philadelphia |

|Delaware |Lower Chichester Twp. |Philadelphia |

|Delaware |Marcus Hook Boro |Philadelphia |

|Delaware |Marple Twp. |Philadelphia |

|Delaware |Media Boro |Philadelphia |

|Delaware |Middletown Twp. |Philadelphia |

|Delaware |Millbourne Boro |Philadelphia |

|Delaware |Morton Boro |Philadelphia |

|Delaware |Nether Providence Twp. |Philadelphia |

|Delaware |Newtown Twp. |Philadelphia |

|Delaware |Norwood Boro |Philadelphia |

|Delaware |Parkside Boro |Philadelphia |

|Delaware |Prospect Park Boro |Philadelphia |

|Delaware |Radnor Twp. |Philadelphia |

|Delaware |Ridley Park Boro |Philadelphia |

|Delaware |Ridley Twp. |Philadelphia |

|Delaware |Rose Valley Boro |Philadelphia |

|Delaware |Rutledge Boro |Philadelphia |

|Delaware |Sharon Hill Boro |Philadelphia |

|Delaware |Springfield Twp. |Philadelphia |

|Delaware |Swarthmore Boro |Philadelphia |

|Delaware |Thornbury Twp. |Philadelphia |

|Delaware |Tinicum Twp. |Philadelphia |

|Delaware |Trainer Boro |Philadelphia |

|Delaware |Upland Boro |Philadelphia |

|Delaware |Upper Chichester Twp. |Philadelphia |

|Delaware |Upper Darby Twp. |Philadelphia |

|Delaware |Upper Providence Twp. |Philadelphia |

|Delaware |Yeadon Boro |Philadelphia |

|Montgomery |Abington Twp. |Philadelphia |

|Montgomery |Ambler Boro |Philadelphia |

|Montgomery |Bridgeport Boro |Philadelphia |

|Montgomery |Bryn Athyn Boro |Philadelphia |

|Montgomery |Cheltenham Twp. |Philadelphia |

|Montgomery |Collegeville Boro |Philadelphia |

|Montgomery |Conshohocken Boro |Philadelphia |

|Montgomery |Douglass Twp. |Pottstown |

|Montgomery |East Greenville Boro |Philadelphia |

|Montgomery |East Norriton Twp. |Philadelphia |

|Montgomery |Franconia Twp. |Philadelphia |

|Montgomery |Green Lane Boro |Philadelphia |

|Montgomery |Hatboro Boro |Philadelphia |

|Montgomery |Hatfield Boro |Philadelphia |

|Montgomery |Hatfield Twp. |Philadelphia |

|Montgomery |Horsham Twp. |Philadelphia |

|Montgomery |Jenkintown Boro |Philadelphia |

|Montgomery |Lansdale Boro |Philadelphia |

|Montgomery |Limerick Twp. |Philadelphia |

|Montgomery |Lower Frederick Twp. |Philadelphia |

|Montgomery |Lower Gwynedd Twp. |Philadelphia |

|Montgomery |Lower Merion Twp. |Philadelphia |

|Montgomery |Lower Moreland Twp. |Philadelphia |

|Montgomery |Lower Pottsgrove Twp. |Philadelphia AND Pottstown |

|Montgomery |Lower Providence Twp. |Philadelphia |

|Montgomery |Lower Salford Twp. |Philadelphia |

|Montgomery |Marlborough Twp. |Philadelphia |

|Montgomery |Montgomery County |Pottstown |

|Montgomery |Montgomery Twp. |Philadelphia |

|Montgomery |Narberth Boro |Philadelphia |

|Montgomery |New Hanover Twp. |Pottstown |

|Montgomery |Norristown Boro |Philadelphia |

|Montgomery |North Wales Boro |Philadelphia |

|Montgomery |Pennsburg Boro |Philadelphia |

|Montgomery |Perkiomen Twp. |Philadelphia |

|Montgomery |Plymouth Twp. |Philadelphia |

|Montgomery |Pottstown Boro |Pottstown |

|Montgomery |Red Hill Boro |Philadelphia |

|Montgomery |Rockledge Boro |Philadelphia |

|Montgomery |Royersford Boro |Philadelphia |

|Montgomery |Salford Twp. |Philadelphia |

|Montgomery |Schwenksville Boro |Philadelphia |

|Montgomery |Skippack Twp. |Philadelphia |

|Montgomery |Souderton Boro |Philadelphia |

|Montgomery |Springfield Twp. |Philadelphia |

|Montgomery |Telford Boro |Philadelphia |

|Montgomery |Towamencin Twp. |Philadelphia |

|Montgomery |Trappe Boro |Philadelphia |

|Montgomery |Upper Dublin Twp. |Philadelphia |

|Montgomery |Upper Frederick Twp. |Philadelphia |

|Montgomery |Upper Gwynedd Twp. |Philadelphia |

|Montgomery |Upper Hanover Twp. |Philadelphia |

|Montgomery |Upper Merion Twp. |Philadelphia |

|Montgomery |Upper Moreland Twp. |Philadelphia |

|Montgomery |Upper Pottsgrove Twp. |Pottstown |

|Montgomery |Upper Providence Twp. |Philadelphia |

|Montgomery |Upper Salford Twp. |Philadelphia |

|Montgomery |West Conshohocken Boro |Philadelphia |

|Montgomery |West Norriton Twp. |Philadelphia |

|Montgomery |West Pottsgrove Twp. |Pottstown |

|Montgomery |Whitemarsh Twp. |Philadelphia |

|Montgomery |Whitpain Twp. |Philadelphia |

|Montgomery |Worcester Twp. |Philadelphia |

|Philadelphia |Philadelphia City |Philadelphia |

|Philadelphia |Philadelphia County |Philadelphia |

Municipal Separate Storm Sewer Systems (MS4s) within Urbanized Areas in Pennsylvania,

Grouped by Region

Northeast Region:

Carbon, Lackawanna, Lehigh, Luzerne, Monroe, Northampton, Pike, Schuylkill, Susquehanna, Wayne, and Wyoming Counties

|County Name |Municipality Name |Urbanized Area Name |

|Carbon |Banks Twp. |Hazleton |

|Carbon |Beaver Meadows Boro |Hazleton |

|Carbon |Bowmanstown Boro |Allentown/Bethlehem |

|Carbon |East Penn Twp. |Allentown/Bethlehem |

|Carbon |Franklin Twp. |Allentown/Bethlehem |

|Carbon |Lehighton Boro |Allentown/Bethlehem |

|Carbon |Lower Towamensing Twp. |Allentown/Bethlehem |

|Carbon |Mahoning Twp. |Allentown/Bethlehem |

|Carbon |Palmerton Boro |Allentown/Bethlehem |

|Carbon |Parryville Boro |Allentown/Bethlehem |

|Carbon |Weissport Boro |Allentown/Bethlehem |

|Lackawanna |Abington Twp. |Scranton |

|Lackawanna |Archbald Boro |Scranton |

|Lackawanna |Blakely Boro |Scranton |

|Lackawanna |Carbondale City |Scranton |

|Lackawanna |Carbondale Twp. |Scranton |

|Lackawanna |Clarks Green Boro |Scranton |

|Lackawanna |Clarks Summit Boro |Scranton |

|Lackawanna |Dalton Boro |Scranton |

|Lackawanna |Dickson City Boro |Scranton |

|Lackawanna |Dunmore Boro |Scranton |

|Lackawanna |Fell Twp. |Scranton |

|Lackawanna |Jermyn Boro |Scranton |

|Lackawanna |Jessup Boro |Scranton |

|Lackawanna |Lackawanna County |Scranton |

|Lackawanna |Mayfield Boro |Scranton |

|Lackawanna |Moosic Boro |Scranton |

|Lackawanna |Newton Twp. |Scranton |

|Lackawanna |Old Forge Boro |Scranton |

|Lackawanna |Olyphant Boro |Scranton |

|Lackawanna |Ransom Twp. |Scranton |

|Lackawanna |Scott Twp. |Scranton |

|Lackawanna |Scranton City |Scranton |

|Lackawanna |South Abington Twp. |Scranton |

|Lackawanna |Taylor Boro |Scranton |

|Lackawanna |Throop Boro |Scranton |

|Lackawanna |Vandling Boro |Scranton |

|Lackawanna |West Abington Twp. |Scranton |

|Lehigh |Alburtis Boro |Allentown/Bethlehem |

|Lehigh |Allentown City |Allentown/Bethlehem |

|Lehigh |Catasauqua Boro |Allentown/Bethlehem |

|Lehigh |Coopersburg Boro |Allentown/Bethlehem |

|Lehigh |Coplay Boro |Allentown/Bethlehem |

|Lehigh |Emmaus Boro |Allentown/Bethlehem |

|Lehigh |Fountain Hill Boro |Allentown/Bethlehem |

|Lehigh |Hanover Twp. |Allentown/Bethlehem |

|Lehigh |Heidelberg Twp. |Allentown/Bethlehem |

|Lehigh |Lehigh County |Allentown/Bethlehem |

|Lehigh |Lower Macungie Twp. |Allentown/Bethlehem |

|Lehigh |Lower Milford Twp. |Allentown/Bethlehem |

|Lehigh |Lowhill Twp. |Allentown/Bethlehem |

|Lehigh |Macungie Boro |Allentown/Bethlehem |

|Lehigh |North Whitehall Twp. |Allentown/Bethlehem |

|Lehigh |Salisbury Twp. |Allentown/Bethlehem |

|Lehigh |Slatington Boro |Allentown/Bethlehem |

|Lehigh |South Whitehall Twp. |Allentown/Bethlehem |

|Lehigh |Upper Macungie Twp. |Allentown/Bethlehem |

|Lehigh |Upper Milford Twp. |Allentown/Bethlehem |

|Lehigh |Upper Saucon Twp. |Allentown/Bethlehem |

|Lehigh |Weisenberg Twp. |Allentown/Bethlehem |

|Lehigh |Whitehall Twp. |Allentown/Bethlehem |

|Luzerne |Ashley Boro |Scranton |

|Luzerne |Avoca Boro |Scranton |

|Luzerne |Bear Creek Twp. |Scranton |

|Luzerne |Butler Twp. |Hazleton |

|Luzerne |Conyngham Twp. |Hazleton |

|Luzerne |Courtdale Boro |Scranton |

|Luzerne |Dallas Boro |Scranton |

|Luzerne |Dallas Twp. |Scranton |

|Luzerne |Dupont Boro |Scranton |

|Luzerne |Duryea Boro |Scranton |

|Luzerne |Edwardsville Boro |Scranton |

|Luzerne |Exeter Boro |Scranton |

|Luzerne |Exeter Twp. |Scranton |

|Luzerne |Forty Fort Boro |Scranton |

|Luzerne |Foster Twp. |Hazleton |

|Luzerne |Freeland Boro |Hazleton |

|Luzerne |Hanover Twp. |Allentown/Bethlehem |

|Luzerne |Hanover Twp. |Scranton |

|Luzerne |Harveys Lake Boro |Scranton |

|Luzerne |Hazle Twp. |Hazleton |

|Luzerne |Hazleton City |Hazleton |

|Luzerne |Hughestown Boro |Scranton |

|Luzerne |Jackson Twp. |Scranton |

|Luzerne |Jeddo Boro |Hazleton |

|Luzerne |Jenkins Twp. |Scranton |

|Luzerne |Kingston Boro |Scranton |

|Luzerne |Kingston Twp. |Scranton |

|Luzerne |Laflin Boro |Scranton |

|Luzerne |Larksville Boro |Scranton |

|Luzerne |Laurel Run Boro |Scranton |

|Luzerne |Lehman Twp. |Scranton |

|Luzerne |Luzerne Boro |Scranton |

|Luzerne |Luzerne County |Scranton |

|Luzerne |Nanticoke City |Scranton |

|Luzerne |Newport Twp. |Scranton |

|Luzerne |Pittston City |Scranton |

|Luzerne |Pittston Twp. |Scranton |

|Luzerne |Plains Twp. |Scranton |

|Luzerne |Plymouth Boro |Scranton |

|Luzerne |Plymouth Twp. |Scranton |

|Luzerne |Pringle Boro |Scranton |

|Luzerne |Sugar Notch Boro |Scranton |

|Luzerne |Sugarloaf Twp. |Hazleton |

|Luzerne |Swoyersville Boro |Scranton |

|Luzerne |Warrior Run Boro |Scranton |

|Luzerne |West Hazleton Boro |Hazleton |

|Luzerne |West Pittston Boro |Scranton |

|Luzerne |West Wyoming Boro |Scranton |

|Luzerne |Wilkes Barre City |Scranton |

|Luzerne |Wilkes Barre Twp. |Scranton |

|Luzerne |Wyoming Boro |Scranton |

|Luzerne |Yatesville Boro |Scranton |

|Northampton |Allen Twp. |Allentown/Bethlehem |

|Northampton |Bangor Boro |Allentown/Bethlehem |

|Northampton |Bath Boro |Allentown/Bethlehem |

|Northampton |Bethlehem City |Allentown/Bethlehem |

|Northampton |Bethlehem Twp. |Allentown/Bethlehem |

|Northampton |Bushkill Twp. |Allentown/Bethlehem |

|Northampton |Chapman Boro |Allentown/Bethlehem |

|Northampton |East Allen Twp. |Allentown/Bethlehem |

|Northampton |East Bangor Boro |Allentown/Bethlehem |

|Northampton |Easton City |Allentown/Bethlehem |

|Northampton |Forks Twp. |Allentown/Bethlehem |

|Northampton |Freemansburg Boro |Allentown/Bethlehem |

|Northampton |Glendon Boro |Allentown/Bethlehem |

|Northampton |Hanover Twp. |Allentown/Bethlehem |

|Northampton |Hellertown Boro |Allentown/Bethlehem |

|Northampton |Lehigh Twp. |Allentown/Bethlehem |

|Northampton |Lower Mt. Bethel Twp. |Allentown/Bethlehem |

|Northampton |Lower Nazareth Twp. |Allentown/Bethlehem |

|Northampton |Lower Saucon Twp. |Allentown/Bethlehem |

|Northampton |Moore Twp. |Allentown/Bethlehem |

|Northampton |Nazareth Boro |Allentown/Bethlehem |

|Northampton |North Catasauqua Boro |Allentown/Bethlehem |

|Northampton |Northampton Boro |Allentown/Bethlehem |

|Northampton |Northampton County |Allentown/Bethlehem |

|Northampton |Palmer Twp. |Allentown/Bethlehem |

|Northampton |Pen Argyl Boro |Allentown/Bethlehem |

|Northampton |Plainfield Twp. |Allentown/Bethlehem |

|Northampton |Roseto Boro |Allentown/Bethlehem |

|Northampton |Stockertown Boro |Allentown/Bethlehem |

|Northampton |Tatamy Boro |Allentown/Bethlehem |

|Northampton |Upper Mt. Bethel Twp. |Allentown/Bethlehem |

|Northampton |Upper Nazareth Twp. |Allentown/Bethlehem |

|Northampton |Walnutport Boro |Allentown/Bethlehem |

|Northampton |Washington Twp. |Allentown/Bethlehem |

|Northampton |West Easton Boro |Allentown/Bethlehem |

|Northampton |Williams Twp. |Allentown/Bethlehem |

|Northampton |Wilson Boro |Allentown/Bethlehem |

|Northampton |Wind Gap Boro |Allentown/Bethlehem |

|Schuylkill |Kline Twp. |Hazleton |

|Schuylkill |McAdoo Boro |Hazleton |

|Susquehanna |Forest City Boro |Scranton |

|Susquehanna |Great Bend Boro |Binghamton |

|Susquehanna |Great Bend Twp. |Binghamton |

|Susquehanna |Hallstead Boro |Binghamton |

|Susquehanna |New Milford Boro |Binghamton |

|Susquehanna |New Milford Twp. |Binghamton |

|Wayne |Canaan Twp. |Scranton |

|Wayne |Clinton Twp. |Scranton |

|Wyoming |Clinton Twp. |Scranton |

|Wyoming |Factoryville Boro |Scranton |

MS4s outside UAs that might be potentially designated for inclusion in the Phase II program:

|County Name |Municipality Name |Urbanized Area Name |

|Schuylkill |Pottsville City |N/A |

| | | |

Municipal Separate Storm Sewer Systems (MS4s) within Urbanized Areas in Pennsylvania,

Grouped by Region

Southcentral Region:

Adams, Bedford, Berks, Blair, Cumberland, Dauphin, Franklin, Fulton, Huntingdon, Juniata, Lancaster, Lebanon, Mifflin, Perry, and York Counties

|County Name |Municipality Name |Urbanized Area Name |

|Berks |Alsace Twp. |Reading |

|Berks |Amity Twp. |Reading |

|Berks |Bally Boro |Pottstown |

|Berks |Bechtelsville Boro |Pottstown |

|Berks |Berks County |Pottstown AND Reading |

|Berks |Bern Twp. |Reading |

|Berks |Birdsboro Boro |Reading |

|Berks |Boyertown Boro |Pottstown |

|Berks |Brecknock Twp. |Reading |

|Berks |Centre Twp. |Reading |

|Berks |Colebrookdale Twp. |Pottstown |

|Berks |Cumru Twp. |Reading |

|Berks |Douglass Twp. |Pottstown |

|Berks |Earl Twp. |Pottstown AND Reading |

|Berks |Exeter Twp. |Reading |

|Berks |Fleetwood Boro |Reading |

|Berks |Heidelberg Twp. |Reading |

|Berks |Kenhorst Boro |Reading |

|Berks |Laureldale Boro |Reading |

|Berks |Leesport Boro |Reading |

|Berks |Longswamp Twp. |Allentown/Bethlehem |

|Berks |Lower Alsace Twp. |Reading |

|Berks |Lower Heidelberg Twp. |Reading |

|Berks |Maidencreek Twp. |Reading |

|Berks |Marion Twp. |Reading |

|Berks |Mohnton Boro |Reading |

|Berks |Mt. Penn Boro |Reading |

|Berks |Muhlenberg Twp. |Reading |

|Berks |Oley Twp. |Reading |

|Berks |Ontelaunee Twp. |Reading |

|Berks |Penn Twp. |Reading |

|Berks |Reading City |Reading |

|Berks |Richmond Twp. |Reading |

|Berks |Robeson Twp. |Reading |

|Berks |Robesonia Boro |Reading |

|Berks |Ruscombmanor Twp. |Reading |

|Berks |Shillington Boro |Reading |

|Berks |Sinking Spring Boro |Reading |

|Berks |South Heidelberg Twp. |Lancaster |

|Berks |South Heidelberg Twp. |Lancaster AND Reading |

|Berks |Spring Twp. |Lancaster AND Reading |

|Berks |St. Lawrence Boro |Reading |

|Berks |Union Twp. |Reading AND Lebanon |

|Berks |Washington Twp. |Pottstown |

|Berks |Wernersville Boro |Reading |

|Berks |West Lawn Boro |Reading |

|Berks |West Reading Boro |Reading |

|Berks |Womelsdorf Boro |Reading |

|Berks |Wyomissing Boro |Reading |

|Berks |Wyomissing Hills Boro |Reading |

|Blair |Allegheny Twp. |Altoona |

|Blair |Altoona City |Altoona |

|Blair |Antis Twp. |Altoona |

|Blair |Bellwood Boro |Altoona |

|Blair |Blair County |Altoona |

|Blair |Blair Twp. |Altoona |

|Blair |Duncansville Boro |Altoona |

|Blair |Frankstown Twp. |Altoona |

|Blair |Freedom Twp. |Altoona |

|Blair |Hollidaysburg Boro |Altoona |

|Blair |Juniata Twp. |Altoona |

|Blair |Logan Twp. |Altoona |

|Blair |Newry Boro |Altoona |

|Cumberland |Camp Hill Boro |Harrisburg |

|Cumberland |Cumberland County |Harrisburg |

|Cumberland |East Pennsboro Twp. |Harrisburg |

|Cumberland |Hampden Twp. |Harrisburg |

|Cumberland |Lemoyne Boro |Harrisburg |

|Cumberland |Lower Allen Twp. |Harrisburg |

|Cumberland |Mechanicsburg Boro |Harrisburg |

|Cumberland |Monroe Twp. |Harrisburg |

|Cumberland |New Cumberland Boro |Harrisburg |

|Cumberland |Shiremanstown Boro |Harrisburg |

|Cumberland |Silver Spring Twp. |Harrisburg |

|Cumberland |Upper Allen Twp. |Harrisburg |

|Cumberland |Wormleysburg Boro |Harrisburg |

|Dauphin |Conewago Twp. |Harrisburg |

|Dauphin |Dauphin Boro |Harrisburg |

|Dauphin |Dauphin County |Harrisburg |

|Dauphin |Derry Twp. |Harrisburg |

|Dauphin |East Hanover Twp. |Harrisburg |

|Dauphin |Harrisburg City |Harrisburg |

|Dauphin |Highspire Boro |Harrisburg |

|Dauphin |Hummelstown Boro |Harrisburg |

|Dauphin |Londonderry Twp. |Harrisburg |

|Dauphin |Lower Paxton Twp. |Harrisburg |

|Dauphin |Lower Swatara Twp. |Harrisburg |

|Dauphin |Middle Paxton Twp. |Harrisburg |

|Dauphin |Middletown Boro |Harrisburg |

|Dauphin |Paxtang Boro |Harrisburg |

|Dauphin |Penbrook Boro |Harrisburg |

|Dauphin |Royalton Boro |Harrisburg |

|Dauphin |South Hanover Twp. |Harrisburg |

|Dauphin |Steelton Boro |Harrisburg |

|Dauphin |Susquehanna Twp. |Harrisburg |

|Dauphin |Swatara Twp. |Harrisburg |

|Dauphin |West Hanover Twp. |Harrisburg |

|Franklin |Antrim Twp. |Hagerstown |

|Franklin |Franklin County |Hagerstown |

|Lancaster |Adamstown Boro |Reading |

|Lancaster |Akron Boro |Lancaster |

|Lancaster |Brecknock Twp. |Lancaster |

|Lancaster |Clay Twp. |Lancaster |

|Lancaster |Columbia Boro |Lancaster |

|Lancaster |Conestoga Twp. |Lancaster |

|Lancaster |Denver Boro |Lancaster |

|Lancaster |Earl Twp. |Lancaster |

|Lancaster |East Cocalico Twp. |Lancaster AND Reading |

|Lancaster |East Donegal Twp. |Lancaster |

|Lancaster |East Earl Twp. |Lancaster |

|Lancaster |East Hempfield Twp. |Lancaster |

|Lancaster |East Lampeter Twp. |Lancaster |

|Lancaster |East Petersburg Boro |Lancaster |

|Lancaster |Elizabeth Twp. |Lancaster |

|Lancaster |Ephrata Boro |Lancaster |

|Lancaster |Ephrata Twp. |Lancaster |

|Lancaster |Lancaster City |Lancaster |

|Lancaster |Lancaster County |Lancaster |

|Lancaster |Lancaster Twp. |Lancaster |

|Lancaster |Leacock Twp. |Lancaster |

|Lancaster |Lititz Boro |Lancaster |

|Lancaster |Manheim Boro |Lancaster |

|Lancaster |Manheim Twp. |Lancaster |

|Lancaster |Manor Twp. |Lancaster |

|Lancaster |Marietta Boro |Lancaster |

|Lancaster |Millersville Boro |Lancaster |

|Lancaster |Mountville Boro |Lancaster |

|Lancaster |Mt. Joy Boro |Lancaster |

|Lancaster |Mt. Joy Twp. |Lancaster |

|Lancaster |New Holland Boro |Lancaster |

|Lancaster |Paradise Twp. |Lancaster |

|Lancaster |Penn Twp. |Lancaster |

|Lancaster |Pequea Twp. |Lancaster |

|Lancaster |Providence Twp. |Lancaster |

|Lancaster |Rapho Twp. |Lancaster |

|Lancaster |Salisbury Twp. |Allentown/Bethlehem AND Lancaster |

|Lancaster |Strasburg Boro |Lancaster |

|Lancaster |Strasburg Twp. |Lancaster |

|Lancaster |Terre Hill Boro |Lancaster |

|Lancaster |Upper Leacock Twp. |Lancaster |

|Lancaster |Warwick Twp. |Lancaster |

|Lancaster |West Cocalico Twp. |Lancaster |

|Lancaster |West Earl Twp. |Lancaster |

|Lancaster |West Hempfield Twp. |Lancaster |

|Lancaster |West Lampeter Twp. |Lancaster |

|Lebanon |Cleona Boro |Lebanon |

|Lebanon |Cornwall Boro |Lebanon |

|Lebanon |East Hanover Twp. |Lebanon |

|Lebanon |Jackson Twp. |Lebanon |

|Lebanon |Jonestown Boro |Lebanon |

|Lebanon |Lebanon City |Lebanon |

|Lebanon |Lebanon County |Harrisburg |

|Lebanon |Myerstown Boro |Lebanon |

|Lebanon |North Annville Twp. |Lebanon |

|Lebanon |North Cornwall Twp. |Lebanon |

|Lebanon |North Lebanon Twp. |Lebanon |

|Lebanon |North Londonderry Twp. |Harrisburg |

|Lebanon |Palmyra Boro |Harrisburg |

|Lebanon |South Annville Twp. |Harrisburg AND Lebanon |

|Lebanon |South Lebanon Twp. |Lebanon |

|Lebanon |South Londonderry Twp. |Harrisburg |

|Lebanon |Swatara Twp. |Lebanon |

|Lebanon |Union Twp. |Pottstown |

|Lebanon |West Cornwall Twp. |Lebanon |

|Lebanon |West Lebanon Twp. |Lebanon |

|Perry |Marysville Boro |Harrisburg |

|Perry |Penn Twp. |Harrisburg |

|Perry |Perry County |Harrisburg |

|Perry |Rye Twp. |Harrisburg |

|York |Carroll Twp. |Harrisburg |

|York |Conewago Twp. |Harrisburg AND York |

|York |Dallastown Boro |York |

|York |Dillsburg Boro |Harrisburg |

|York |Dover Boro |York |

|York |Dover Twp. |York |

|York |East Manchester Twp. |York |

|York |East Prospect Boro |York |

|York |Fairview Twp. |Harrisburg |

|York |Franklin Twp. |Harrisburg |

|York |Franklintown Boro |Harrisburg |

|York |Goldsboro Boro |York |

|York |Hallam Boro |York |

|York |Hellam Twp. |Lancaster AND York |

|York |Jackson Twp. |York |

|York |Jacobus Boro |York |

|York |Lewisberry Boro |Harrisburg |

|York |Loganville Boro |York |

|York |Lower Windsor Twp. |York |

|York |Manchester Boro |York |

|York |Manchester Twp. |York |

|York |Monaghan Twp. |Harrisburg |

|York |Mt. Wolf Boro |York |

|York |New Salem Boro |York |

|York |Newberry Twp. |Harrisburg AND York |

|York |North Codorus Twp. |York |

|York |North York Boro |York |

|York |Red Lion Boro |York |

|York |Spring Garden Twp. |York |

|York |Springettsbury Twp. |York |

|York |Springfield Twp. |York |

|York |Warrington Twp. |Harrisburg |

|York |West Manchester Twp. |York |

|York |West York Boro |York |

|York |Windsor Boro |York |

|York |Windsor Twp. |York |

|York |Wrightsville Boro |Lancaster |

|York |Yoe Boro |York |

|York |York City |York |

|York |York County |Harrisburg AND Lancaster AND York |

|York |York Haven Boro |York |

|York |York Twp. |York |

|York |Yorkana Boro |York |

MS4s outside UAs that might be potentially designated for inclusion in the Phase II program:

|County Name |Municipality Name |Urbanized Area Name |

|Cumberland |Carlisle Boro |N/A |

|Franklin |Chambersburg Boro |N/A |

|Lancaster |Elizabethtown Boro |N/A |

|York |Hanover Boro |N/A |

Municipal Separate Storm Sewer Systems (MS4s) within Urbanized Areas in Pennsylvania,

Grouped by Region

Northcentral Region:

Bradford, Cameron, Centre, Clearfield, Clinton, Columbia, Lycoming, Montour, Northumberland, Potter, Snyder, Sullivan, Tioga, and Union Counties

|County Name |Municipality Name |Urbanized Area Name |

|Centre |Benner Twp. |State College |

|Centre |Centre County |State College |

|Centre |College Twp. |State College |

|Centre |Ferguson Twp. |State College |

|Centre |Harris Twp. |State College |

|Centre |Patton Twp. |State College |

|Centre |State College Boro |State College |

|Lycoming |Duboistown Boro |Williamsport |

|Lycoming |Fairfield Twp. |Williamsport |

|Lycoming |Hepburn Twp. |Williamsport |

|Lycoming |Loyalsock Twp. |Williamsport |

|Lycoming |Lycoming County |Williamsport |

|Lycoming |Lycoming Twp. |Williamsport |

|Lycoming |Montoursville Boro |Williamsport |

|Lycoming |Old Lycoming Twp. |Williamsport |

|Lycoming |Piatt Twp. |Williamsport |

|Lycoming |South Williamsport Boro |Williamsport |

|Lycoming |Williamsport City |Williamsport |

|Lycoming |Woodward Twp. |Williamsport |

MS4s outside UAs that might be potentially designated for inclusion in the Phase II program:

|County Name |Municipality Name |Urbanized Area Name |

|Columbia |Berwick Boro |N/A |

|Columbia |Bloomsburg Boro |N/A |

|Northumberland |Sunbury City |N/A |

Municipal Separate Storm Sewer Systems (MS4s) within Urbanized Areas in Pennsylvania,

Grouped by Region

Southwest Region:

Allegheny, Armstrong, Beaver, Cambria, Fayette, Greene, Indiana, Somerset, Washington, and Westmoreland Counties

|County Name |Municipality Name |Urbanized Area Name |

|Allegheny |Aleppo Twp. |Pittsburgh |

|Allegheny |Allegheny County |Pittsburgh |

|Allegheny |Aspinwall Boro |Pittsburgh |

|Allegheny |Avalon Boro |Pittsburgh |

|Allegheny |Baldwin Boro |Pittsburgh |

|Allegheny |Baldwin Twp. |Pittsburgh |

|Allegheny |Bell Acres Boro |Pittsburgh |

|Allegheny |Bellevue Boro |Pittsburgh |

|Allegheny |Ben Avon Boro |Pittsburgh |

|Allegheny |Ben Avon Heights Boro |Pittsburgh |

|Allegheny |Bethel Park Boro |Pittsburgh |

|Allegheny |Blawnox Boro |Pittsburgh |

|Allegheny |Brackenridge Boro |Pittsburgh |

|Allegheny |Braddock Boro |Pittsburgh |

|Allegheny |Braddock Hills Boro |Pittsburgh |

|Allegheny |Bradford Woods Boro |Pittsburgh |

|Allegheny |Brentwood Boro |Pittsburgh |

|Allegheny |Bridgeville Boro |Pittsburgh |

|Allegheny |Carnegie Boro |Pittsburgh |

|Allegheny |Castle Shannon Boro |Pittsburgh |

|Allegheny |Chalfant Boro |Pittsburgh |

|Allegheny |Cheswick Boro |Pittsburgh |

|Allegheny |Churchill Boro |Pittsburgh |

|Allegheny |Clairton City |Pittsburgh |

|Allegheny |Collier Twp. |Pittsburgh |

|Allegheny |Coraopolis Boro |Pittsburgh |

|Allegheny |Crafton Boro |Pittsburgh |

|Allegheny |Crescent Twp. |Pittsburgh |

|Allegheny |Dormont Boro |Pittsburgh |

|Allegheny |Dravosburg Boro |Pittsburgh |

|Allegheny |Duquesne City |Pittsburgh |

|Allegheny |East Deer Twp. |Pittsburgh |

|Allegheny |East McKeesport Boro |Pittsburgh |

|Allegheny |East Pittsburgh Boro |Pittsburgh |

|Allegheny |Edgewood Boro |Pittsburgh |

|Allegheny |Edgeworth Boro |Pittsburgh |

|Allegheny |Elizabeth Boro |Pittsburgh |

|Allegheny |Elizabeth Twp. |Pittsburgh |

|Allegheny |Emsworth Boro |Pittsburgh |

|Allegheny |Etna Boro |Pittsburgh |

|Allegheny |Fawn Twp. |Pittsburgh |

|Allegheny |Findlay Twp. |Pittsburgh |

|Allegheny |Forest Hills Boro |Pittsburgh |

|Allegheny |Forward Twp. |Monessen AND Pittsburgh |

|Allegheny |Fox Chapel Boro |Pittsburgh |

|Allegheny |Franklin Park Boro |Pittsburgh |

|Allegheny |Frazer Twp. |Pittsburgh |

|Allegheny |Glassport Boro |Pittsburgh |

|Allegheny |Glenfield Boro |Pittsburgh |

|Allegheny |Green Tree Boro |Pittsburgh |

|Allegheny |Hampton Twp. |Pittsburgh |

|Allegheny |Harmar Twp. |Pittsburgh |

|Allegheny |Harrison Twp. |Pittsburgh |

|Allegheny |Haysville Boro |Pittsburgh |

|Allegheny |Heidelberg Boro |Pittsburgh |

|Allegheny |Homestead Boro |Pittsburgh |

|Allegheny |Indiana Twp. |Pittsburgh |

|Allegheny |Ingram Boro |Pittsburgh |

|Allegheny |Jefferson Hills Boro |Pittsburgh |

|Allegheny |Kennedy Twp. |Pittsburgh |

|Allegheny |Kilbuck Twp. |Pittsburgh |

|Allegheny |Leet Twp. |Pittsburgh |

|Allegheny |Leetsdale Boro |Pittsburgh |

|Allegheny |Liberty Boro |Pittsburgh |

|Allegheny |Lincoln Boro |Pittsburgh |

|Allegheny |Marshall Twp. |Pittsburgh |

|Allegheny |McCandless Twp. |Pittsburgh |

|Allegheny |McKees Rocks Boro |Pittsburgh |

|Allegheny |McKeesport City |Pittsburgh |

|Allegheny |Millvale Boro |Pittsburgh |

|Allegheny |Monroeville Boro |Pittsburgh |

|Allegheny |Moon Twp. |Pittsburgh |

|Allegheny |Mt. Lebanon Twp. |Pittsburgh |

|Allegheny |Mt. Oliver Boro |Pittsburgh |

|Allegheny |Munhall Boro |Pittsburgh |

|Allegheny |Neville Twp. |Pittsburgh |

|Allegheny |North Braddock Boro |Pittsburgh |

|Allegheny |North Fayette Twp. |Pittsburgh |

|Allegheny |North Versailles Twp. |Pittsburgh |

|Allegheny |O’Hara Twp. |Pittsburgh |

|Allegheny |Oakdale Boro |Pittsburgh |

|Allegheny |Oakmont Boro |Pittsburgh |

|Allegheny |Ohio Twp. |Pittsburgh |

|Allegheny |Osborne Boro |Pittsburgh |

|Allegheny |Penn Hills Twp. |Pittsburgh |

|Allegheny |Pennsbury Village Boro |Pittsburgh |

|Allegheny |Pine Twp. |Pittsburgh |

|Allegheny |Pitcairn Boro |Pittsburgh |

|Allegheny |Pittsburgh City |Pittsburgh |

|Allegheny |Pleasant Hills Boro |Pittsburgh |

|Allegheny |Plum Boro |Pittsburgh |

|Allegheny |Port Vue Boro |Pittsburgh |

|Allegheny |Rankin Boro |Pittsburgh |

|Allegheny |Reserve Twp. |Pittsburgh |

|Allegheny |Richland Twp. |Pittsburgh |

|Allegheny |Robinson Twp. |Pittsburgh |

|Allegheny |Ross Twp. |Pittsburgh |

|Allegheny |Rosslyn Farms Boro |Pittsburgh |

|Allegheny |Scott Twp. |Pittsburgh |

|Allegheny |Sewickley Boro |Pittsburgh |

|Allegheny |Sewickley Heights Boro |Pittsburgh |

|Allegheny |Sewickley Hills Boro |Pittsburgh |

|Allegheny |Shaler Twp. |Pittsburgh |

|Allegheny |Sharpsburg Boro |Pittsburgh |

|Allegheny |South Fayette Twp. |Pittsburgh |

|Allegheny |South Park Twp. |Pittsburgh |

|Allegheny |South Versailles Twp. |Pittsburgh |

|Allegheny |Springdale Boro |Pittsburgh |

|Allegheny |Springdale Twp. |Pittsburgh |

|Allegheny |Stowe Twp. |Pittsburgh |

|Allegheny |Swissvale Boro |Pittsburgh |

|Allegheny |Tarentum Boro |Pittsburgh |

|Allegheny |Thornburg Boro |Pittsburgh |

|Allegheny |Turtle Creek Boro |Pittsburgh |

|Allegheny |Upper St. Clair Twp. |Pittsburgh |

|Allegheny |Verona Boro |Pittsburgh |

|Allegheny |Versailles Boro |Pittsburgh |

|Allegheny |Wall Boro |Pittsburgh |

|Allegheny |West Deer Twp. |Pittsburgh |

|Allegheny |West Elizabeth Boro |Pittsburgh |

|Allegheny |West Homestead Boro |Pittsburgh |

|Allegheny |West Mifflin Boro |Pittsburgh |

|Allegheny |West View Boro |Pittsburgh |

|Allegheny |Whitaker Boro |Pittsburgh |

|Allegheny |White Oak Boro |Pittsburgh |

|Allegheny |Whitehall Boro |Pittsburgh |

|Allegheny |Wilkinsburg Boro |Pittsburgh |

|Allegheny |Wilmerding Boro |Pittsburgh |

|Armstrong |Freeport Boro |Pittsburgh |

|Armstrong |South Buffalo Twp. |Pittsburgh |

|Beaver |Aliquippa City |Pittsburgh |

|Beaver |Ambridge Boro |Pittsburgh |

|Beaver |Baden Boro |Pittsburgh |

|Beaver |Beaver Boro |Pittsburgh |

|Beaver |Beaver County |Pittsburgh |

|Beaver |Beaver Falls City |Pittsburgh |

|Beaver |Big Beaver Boro |Pittsburgh |

|Beaver |Bridgewater Boro |Pittsburgh |

|Beaver |Brighton Twp. |Pittsburgh |

|Beaver |Center Twp. |Pittsburgh |

|Beaver |Chippewa Twp. |Pittsburgh |

|Beaver |Conway Boro |Pittsburgh |

|Beaver |Darlington Boro |Pittsburgh |

|Beaver |Darlington Twp. |Pittsburgh |

|Beaver |Daugherty Twp. |Pittsburgh |

|Beaver |East Rochester Boro |Pittsburgh |

|Beaver |Eastvale Boro |Pittsburgh |

|Beaver |Economy Boro |Pittsburgh |

|Beaver |Fallston Boro |Pittsburgh |

|Beaver |Franklin Twp. |Pittsburgh AND Uniontown/Connellsville |

|Beaver |Freedom Boro |Pittsburgh |

|Beaver |Harmony Twp. |Pittsburgh |

|Beaver |Homewood Boro |Pittsburgh |

|Beaver |Hopewell Twp. |Pittsburgh |

|Beaver |Industry Boro |Pittsburgh |

|Beaver |Koppel Boro |Pittsburgh |

|Beaver |Monaca Boro |Pittsburgh |

|Beaver |New Brighton Boro |Pittsburgh |

|Beaver |New Galilee Boro |Pittsburgh |

|Beaver |New Sewickley Twp. |Pittsburgh |

|Beaver |North Sewickley Twp. |Pittsburgh |

|Beaver |Patterson Heights Boro |Pittsburgh |

|Beaver |Patterson Twp. |Pittsburgh |

|Beaver |Potter Twp. |Pittsburgh |

|Beaver |Pulaski Twp. |Pittsburgh |

|Beaver |Rochester Boro |Pittsburgh |

|Beaver |Rochester Twp. |Pittsburgh |

|Beaver |South Beaver Twp. |Pittsburgh |

|Beaver |South Heights Boro |Pittsburgh |

|Beaver |Vanport Twp. |Pittsburgh |

|Beaver |West Mayfield Boro |Pittsburgh |

|Beaver |White Twp. |Pittsburgh |

|Cambria |Adams Twp. |Johnstown |

|Cambria |Brownstown Boro |Johnstown |

|Cambria |Cambria County |Johnstown |

|Cambria |Conemaugh Twp. |Johnstown |

|Cambria |Daisytown Boro |Johnstown |

|Cambria |Dale Boro |Johnstown |

|Cambria |East Conemaugh Boro |Johnstown |

|Cambria |East Taylor Twp. |Johnstown |

|Cambria |Ferndale Boro |Johnstown |

|Cambria |Franklin Boro |Johnstown |

|Cambria |Geistown Boro |Johnstown |

|Cambria |Jackson Twp. |Johnstown |

|Cambria |Johnstown City |Johnstown |

|Cambria |Lorain Boro |Johnstown |

|Cambria |Lower Yoder Twp. |Johnstown |

|Cambria |Middle Taylor Twp. |Johnstown |

|Cambria |Richland Twp. |Johnstown |

|Cambria |Scalp Level Boro |Johnstown |

|Cambria |Southmont Boro |Johnstown |

|Cambria |Stonycreek Twp. |Johnstown |

|Cambria |Upper Yoder Twp. |Johnstown |

|Cambria |West Taylor Twp. |Johnstown |

|Cambria |Westmont Boro |Johnstown |

|Fayette |Belle Vernon Boro |Monessen |

|Fayette |Brownsville Boro |Monessen |

|Fayette |Brownsville Twp. |Monessen |

|Fayette |Bullskin Twp. |Pittsburgh AND Uniontown/Connellsville |

|Fayette |Connellsville City |Uniontown |

|Fayette |Connellsville Twp. |Uniontown |

|Fayette |Dawson Boro |Uniontown |

|Fayette |Dunbar Boro |Uniontown |

|Fayette |Dunbar Twp. |Uniontown |

|Fayette |Everson Boro |Pittsburgh |

|Fayette |Fairchance Boro |Uniontown |

|Fayette |Fayette City Boro |Monessen |

|Fayette |Fayette County |Monessen |

|Fayette |Georges Twp. |Uniontown |

|Fayette |German Twp. |Uniontown |

|Fayette |Lower Tyrone Twp. |Uniontown |

|Fayette |Luzerne Twp. |Monessen |

|Fayette |Newell Boro |Monessen |

|Fayette |North Union Twp. |Uniontown |

|Fayette |South Connellsville Boro |Uniontown |

|Fayette |South Union Twp. |Uniontown |

|Fayette |Uniontown City |Uniontown |

|Fayette |Upper Tyrone Twp. |Pittsburgh |

|Fayette |Vanderbilt Boro |Uniontown |

|Fayette |Washington Twp. |Monessen |

|Somerset |Conemaugh Twp. |Johnstown |

|Somerset |Paint Boro |Johnstown |

|Somerset |Paint Twp. |Johnstown |

|Somerset |Somerset County |Johnstown |

|Somerset |Windber Boro |Johnstown |

|Washington |Allenport Boro |Monessen |

|Washington |Amwell Twp. |Pittsburgh |

|Washington |Bentleyville Boro |Monessen |

|Washington |Buffalo Twp. |Pittsburgh |

|Washington |California Boro |Monessen |

|Washington |Canonsburg Boro |Pittsburgh |

|Washington |Canton Twp. |Pittsburgh |

|Washington |Carroll Twp. |Monessen |

|Washington |Cecil Twp. |Pittsburgh |

|Washington |Charleroi Boro |Monessen |

|Washington |Chartiers Twp. |Pittsburgh |

|Washington |Coal Center Boro |Monessen |

|Washington |Cokeburg Boro |Monessen |

|Washington |Donora Boro |Monessen |

|Washington |Dunlevy Boro |Monessen |

|Washington |East Washington Boro |Pittsburgh |

|Washington |Elco Boro |Monessen |

|Washington |Ellsworth Boro |Monessen |

|Washington |Fallowfield Twp. |Monessen |

|Washington |Finleyville Boro |Pittsburgh |

|Washington |Hanover Twp. |Weirton |

|Washington |Houston Boro |Pittsburgh |

|Washington |McDonald Boro |Pittsburgh |

|Washington |Monongahela City |Monessen |

|Washington |New Eagle Boro |Monessen |

|Washington |North Bethlehem Twp. |Monessen |

|Washington |North Charleroi Boro |Monessen |

|Washington |North Franklin Twp. |Pittsburgh |

|Washington |North Strabane Twp. |Pittsburgh |

|Washington |Nottingham Twp. |Pittsburgh |

|Washington |Peters Twp. |Pittsburgh |

|Washington |Robinson Twp. |Pittsburgh |

|Washington |Roscoe Boro |Monessen |

|Washington |Somerset Twp. |Monessen |

|Washington |South Franklin Twp. |Pittsburgh |

|Washington |South Strabane Twp. |Pittsburgh |

|Washington |Speers Boro |Monessen |

|Washington |Stockdale Boro |Monessen |

|Washington |Twilight Boro |Monessen |

|Washington |Union Twp. |Monessen AND Pittsburgh |

|Washington |Washington City |Pittsburgh |

|Washington |Washington County |Monessen AND Pittsburgh AND Weirton |

|Washington |West Brownsville Boro |Monessen |

|Washington |West Pike Run Twp. |Monessen |

|Westmoreland |Adamsburg Boro |Pittsburgh |

|Westmoreland |Allegheny Twp. |Pittsburgh |

|Westmoreland |Arnold City |Pittsburgh |

|Westmoreland |Arona Boro |Pittsburgh |

|Westmoreland |Delmont Boro |Pittsburgh |

|Westmoreland |Derry Twp. |Pittsburgh |

|Westmoreland |East Huntingdon Twp. |Pittsburgh |

|Westmoreland |Export Boro |Pittsburgh |

|Westmoreland |Greensburg City |Pittsburgh |

|Westmoreland |Hempfield Twp. |Pittsburgh |

|Westmoreland |Hunker Boro |Pittsburgh |

|Westmoreland |Irwin Boro |Pittsburgh |

|Westmoreland |Jeannette City |Pittsburgh |

|Westmoreland |Latrobe Boro |Pittsburgh |

|Westmoreland |Ligonier Boro |Pittsburgh |

|Westmoreland |Lower Burrell City |Pittsburgh |

|Westmoreland |Madison Boro |Pittsburgh |

|Westmoreland |Manor Boro |Pittsburgh |

|Westmoreland |Monessen City |Monessen |

|Westmoreland |Mt. Pleasant Boro |Pittsburgh |

|Westmoreland |Mt. Pleasant Twp. |Pittsburgh |

|Westmoreland |Murrysville Boro |Pittsburgh |

|Westmoreland |New Kensington City |Pittsburgh |

|Westmoreland |New Stanton Boro |Pittsburgh |

|Westmoreland |North Belle Vernon Boro |Monessen |

|Westmoreland |North Huntingdon Twp. |Pittsburgh |

|Westmoreland |North Irwin Boro |Pittsburgh |

|Westmoreland |Penn Boro |Pittsburgh |

|Westmoreland |Penn Twp. |Pittsburgh |

|Westmoreland |Rostraver Twp. |Monessen AND Pittsburgh |

|Westmoreland |Salem Twp. |Pittsburgh |

|Westmoreland |Scottdale Boro |Pittsburgh |

|Westmoreland |Sewickley Twp. |Pittsburgh |

|Westmoreland |South Greensburg Boro |Pittsburgh |

|Westmoreland |South Huntingdon Twp. |Pittsburgh |

|Westmoreland |Southwest Greensburg Boro |Pittsburgh |

|Westmoreland |Sutersville Boro |Pittsburgh |

|Westmoreland |Trafford Boro |Pittsburgh |

|Westmoreland |Washington Twp. |Pittsburgh |

|Westmoreland |West Newton Boro |Pittsburgh |

|Westmoreland |Westmoreland County |Monessen AND Pittsburgh |

|Westmoreland |Youngstown Boro |Pittsburgh |

|Westmoreland |Youngwood Boro |Pittsburgh |

MS4s outside UAs that might be potentially designated for inclusion in the Phase II program:

|County Name |Municipality Name |Urbanized Area Name |

|Indiana |Indiana Boro |N/A |

Municipal Separate Storm Sewer Systems (MS4s) within Urbanized Areas in Pennsylvania,

Grouped by Region

Northwest Region:

Butler, Clarion, Crawford, Elk, Erie, Forest, Jefferson, Lawrence, McKean, Mercer, Venango, and Warren Counties

|County Name |Municipality Name |Urbanized Area Name |

|Butler |Adams Twp. |Pittsburgh |

|Butler |Buffalo Twp. |Pittsburgh |

|Butler |Cranberry Twp. |Pittsburgh |

|Butler |Mars Boro |Pittsburgh |

|Butler |Middlesex Twp. |Pittsburgh |

|Butler |Seven Fields Boro |Pittsburgh |

|Butler |Valencia Boro |Pittsburgh |

|Butler |Winfield Twp. |Pittsburgh |

|Erie |Erie City |Erie |

|Erie |Erie County |Erie |

|Erie |Fairview Twp. |Erie |

|Erie |Girard Boro |Erie |

|Erie |Girard Twp. |Erie |

|Erie |Greene Twp. |Erie |

|Erie |Harborcreek Twp. |Erie |

|Erie |Lake City Boro |Erie |

|Erie |Lawrence Park Twp. |Erie |

|Erie |McKean Twp. |Erie |

|Erie |Millcreek Twp. |Erie |

|Erie |Summit Twp. |Erie |

|Erie |Wesleyville Boro |Erie |

|Lawrence |Ellport Boro |Pittsburgh |

|Lawrence |Ellwood City Boro |Pittsburgh |

|Lawrence |Lawrence County |Pittsburgh |

|Lawrence |Perry Twp. |Pittsburgh AND Reading |

|Lawrence |Wayne Twp. |Pittsburgh |

|Mercer |Farrell City |Youngstown |

|Mercer |Hermitage City |Youngstown |

|Mercer |Mercer County |Youngstown |

|Mercer |Sharon City |Youngstown |

|Mercer |Sharpsville Boro |Youngstown |

|Mercer |Shenango Twp. |Youngstown |

|Mercer |South Pymatuning Twp. |Youngstown |

|Mercer |West Middlesex Boro |Youngstown |

|Mercer |Wheatland Boro |Youngstown |

MS4s outside UAs that might be potentially designated for inclusion in the Phase II program:

|County Name |Municipality Name |Urbanized Area Name |

|Butler |Butler City |N/A |

|Crawford |Meadville City |N/A |

|Lawrence |New Castle City |N/A |

|Venango |Oil City |N/A |

|Warren |Warren City |N/A |

|County Name |Municipality Name |Urbanized Area Name |

|Butler |Butler City |N/A |

|Columbia |Berwick Boro |N/A |

|Columbia |Bloomsburg Boro |N/A |

|Crawford |Meadville City |N/A |

|Cumberland |Carlisle Boro |N/A |

|Franklin |Chambersburg Boro |N/A |

|Indiana |Indiana Boro |N/A |

|Lancaster |Elizabethtown Boro |N/A |

|Lawrence |New Castle City |N/A |

|Northumberland |Sunbury City |N/A |

|Schuylkill |Pottsville City |N/A |

|Venango |Oil City |N/A |

|Warren |Warren City |N/A |

|York |Hanover Boro |N/A |

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