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EWG's Tap Water Database — 2019 UPDATE

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Utility name City People served
Altoona Water Authority Altoona Population served: 62,500
Ambler Boro Water Dept Ambler Population served: 20,000
Ambridge Water Authority Ambridge Population served: 19,500
Aqua Pa Bensalem Bryn Mawr Population served: 44,543
Aqua Pa Bristol Bryn Mawr Population served: 28,728
Aqua Pa Hatboro Bryn Mawr Population served: 12,901
Aqua Pa Roaring Creek Division Shamokin Population served: 43,000
Aqua Pa Shenango Valley WTP Sharon Population served: 48,000
Aqua Pa Susquehanna Division Sayre Population served: 15,569
Aqua Pa Uwchlan Bryn Mawr Population served: 32,200
Aqua Pa West Chester Bryn Mawr Population served: 33,918
Aqua Pennsylvania Main System Bryn Mawr Population served: 747,460
Authority of Boro of Charleroi Charleroi Population served: 26,330
Bcwsa Main Lower South Warrington Population served: 52,621
Bear Valley Joint Authority St Thomas Population served: 12,000
Beaver Falls Municipal Authority Beaver Falls Population served: 50,000
Boro of Waynesboro Waynesboro Population served: 13,000
Bradford City Water Authority Bradford Population served: 18,000
Brodhead Creek Reg Water Authority East Stroudsburg Population served: 22,500
Capital Region Water Harrisburg Population served: 66,540
Carlisle Water Trmt Plt Carlisle Population served: 19,829
Center Twp Water Authority Aliquippa Population served: 12,500
Central Clinton County Water Filtration Authority Lock Haven Population served: 19,261
Chambersburg Boro Water Sys Chambersburg Population served: 17,500
Chester Water Authority Chester Population served: 124,649
City of Bethlehem Bethlehem Population served: 115,686
City of Lancaster Lancaster Population served: 120,000
Clearfield Municipal Authority Clearfield Population served: 14,000
Columbia Water Company Columbia Population served: 21,500
Cranberry Twp WTP Cranberry Twp Population served: 29,000
Creswell Heights Jt Authority South Heights Population served: 12,855
Dallastown Yoe Water Authority Dallastown Population served: 12,000
Dover Township Water Sys Dover Population served: 14,640
E Stroudsburg Boro Water Dept East Stroudsburg Population served: 12,500
East Hempfield Water Authority Landisville Population served: 16,761
Easton Area Water System Easton Population served: 85,163
Elizabethtown Area Water Elizabethtown Population served: 18,900
Emmaus Borough Public Water Emmaus Population served: 14,000
Ephrata Area Joint Authority Ephrata Population served: 17,937
Erie City Water Authority Erie Population served: 180,000
Falls Twp Water & Sewer Dept Fairless Hills Population served: 24,400
Fox Chapel Authority Pittsburgh Population served: 18,500
Gettysburg Municipal Authority Gettysburg Population served: 11,500
Greater Johnstown Wa Riverside Johnstown Population served: 45,577
Guilford Water Authority Chambersburg Population served: 26,000
Hampton Shaler Water Authority Allison Park Population served: 57,731
Hanover Municipal Water Works Hanover Population served: 36,576
Harrison Twp Water Authority Natrona Heights Population served: 10,461
Hca Roan Filter Plant Hazleton Population served: 40,620
Highland S & W Authority Beaverdam Johnstown Population served: 24,100
Highridge Water Authority Blairsville Population served: 12,000
Horsham Water&sewer Authority Horsham Population served: 25,000
Huntingdon Boro Water Dept Huntingdon Population served: 12,121
Latrobe Municipal Authority Latrobe Population served: 30,000
Lca Wlsa Central Division Allentown Population served: 39,792
Lebanon Water Authority Lebanon Population served: 57,000
Lehigh County Authority Allentown Division Allentown Population served: 106,000
Lewistown Boro Municipal Authority Lewistown Population served: 26,765
Lower Bucks County Joint Municipal Authority Levittown, Population served: 66,100
Meadville Area Water Authority Meadville Population served: 17,339
Monroeville Municipal Authority Monroeville Population served: 48,500
Moon Twp Municipal Authority Coraopolis Population served: 38,000
Morrisville Munic Authority Morrisville Population served: 13,342
Mt Penn Boro Municipal Authority Reading Population served: 10,400
Mt. Joy Boro Authority Mt. Joy Population served: 14,150
Muhlenberg Twp Municipal Authority Reading Population served: 21,000
Mun Water Authority of Aliquippa Aliquippa Population served: 14,250
Municipal Authority of Westmoreland County - Sweeney Water Treatment Plant Greensburg Population served: 150,000
Municipal Authority of Westmoreland County - Yough Plant Greensburg Population served: 140,000
Municipal Authority Sunbury Sunbury Population served: 11,043
New Kensington Municipal Authority New Kensington Population served: 47,800
Newtown Artesian Water Company Newtown Population served: 33,000
North Fayette Cnty Municipal Authority Dunbar Population served: 36,166
North Penn Water Authority Lansdale Population served: 82,822
North Wales Water Authority North Wales Population served: 68,656
Northampton Boro Municipal Authority Northampton Population served: 40,000
Northampton Bucks County Municipal Authority Richboro Population served: 36,750
Oakmont Water Authority Oakmont Population served: 38,465
Oil City Oil City Population served: 12,653
Pa Amer Water Philipsburg Milton Population served: 20,095
Pa-american Water Co-connellsv Uniontown Population served: 13,320
Pa-american Water- Uniontown Elrama Population served: 23,125
Pa-american Water-brownsville Elrama Population served: 11,890
Paw Bangor District Wilkes-barre Population served: 10,001
Paw Blue Mountain Division Wilkes-barre Population served: 23,613
Paw Glen Alsace Div Birdsboro Population served: 22,000
Paw Penn District Birdsboro Population served: 29,525
Pawc Brownell Wilkes-barre Population served: 11,965
Pawc Ceasetown Wilkes-barre Population served: 63,198
Pawc Huntsville Wilkes-barre Population served: 10,800
Pawc Nesbitt Wilkes-barre Population served: 58,278
Pawc Pocono District Tobyhanna Population served: 19,875
Pawc Watres Wilkes Barre Population served: 58,000
Penn State Univ. University Park Population served: 37,000
Pennsylvania American Coatesville Coatesville Population served: 35,600
Pennsylvania American Norristown Norristown Population served: 96,376
Pennsylvania American Royersford Spring City Population served: 43,050
Pennsylvania American Water Berwick Dallas Population served: 16,000
Pennsylvania American Water Company Hummelstown Population served: 43,005
Pennsylvania American Water Company - Indiana D Indiana Population served: 24,877
Pennsylvania American Water Company Butler New Castle Population served: 41,912
Pennsylvania American Water Company Clarion Butler Population served: 16,600
Pennsylvania American Water Company Ellwood Cty New Castle Population served: 16,902
Pennsylvania American Water Company New Castle New Castle Population served: 45,819
Pennsylvania American Water Company Warren Warren Population served: 13,202
Pennsylvania American Water Company West Mechanicsburg Population served: 93,368
Pennsylvania American Water Company Yardley Yardley Population served: 37,259
Pennsylvania American Water Lake Scranton Wilkes Barre Population served: 134,570
Pennsylvania American Water Pittsburgh Mcmurray Population served: 507,675
Pennsylvania American White Deer Milton Population served: 29,816
Perkasie Regional Authority Perkasie Population served: 11,100
Philadelphia Water Department Philadelphia Population served: 1,600,000
Phoenixville Water Dept Phoenixville Population served: 16,438
Pittsburgh Water & Sewer Authority Pittsburgh Population served: 225,000
Plum Boro Municipal Authority Pittsburgh Population served: 26,000
Pottstown Borough Water Authority Pottstown Population served: 36,000
Quakertown Boro Quakertown Population served: 12,800
Reading Area Water Authority Reading Population served: 87,000
Red Lion Red Lion Population served: 13,430
Robinson Twp Municipal Authority Pittsburgh Population served: 12,289
Schuylkill County. Municipal Authority Pottsville Population served: 31,850
Shillington Municipal Authority Shillington Population served: 11,709
Shippensburg Boro Water Authority Shippensburg Population served: 14,004
Slippery Rock Municipal Authority Slippery Rock Population served: 15,778
South Middleton Twp Water Authority Boiling Springs Population served: 12,939
Southwestern Pennsylvania Water Authority Jefferson Population served: 40,000
St Marys Area Water Authority St Marys Population served: 22,000
State College Boro Water Auth. State College Population served: 47,000
Swta - Main System Allentown Population served: 16,000
Tri County Joint Municipal Authority Fredericktown Population served: 10,100
United Water Pa Bloomsburg Op Bloomsburg Population served: 21,500
United Water Pa Mechanicsburg Harrisburg Population served: 27,381
United Water Pennsylvania Harrisburg Population served: 97,645
Upper Southampton Mun Authority Southampton Population served: 16,000
Warminster Municipal Authority Warminster Population served: 40,000
Warrington Twp Water&sew Dept Warrington Population served: 18,400
Warwick Twp Water & Sewer Authority Jamison Population served: 11,133
West Cnty Muni Auth-mckeesport Greensburg Population served: 33,000
West View Water Authority Pittsburgh Population served: 200,000
Western Allegheny County Mun A Oakdale Population served: 14,500
Whitehall Twp Authority Whitehall Population served: 13,063
Wilkinsburg-penn Joint Water Authority Wilkinsburg Population served: 120,000
Williamsport Mun Water Authority Williamsport Population served: 52,000
York Water Company York Population served: 159,623