Pennsylvania water providers

Find published drinking-water records, providers, and official agency resources for Pennsylvania. Review sources, sample dates, and coverage.

Official drinking-water resources

• Pennsylvania Department of Environmental Protection - Public Drinking Water
• Pennsylvania Public Drinking Water Reporting System
• Pennsylvania DEP — PFAS monitoring results and source workbooks

The responsible agency may differ for tribal systems. Record availability and sample dates vary by provider.

Community systems appear first. Sort: Population served · A–Z

Public water systems

7,682 systems in the imported directory. Includes community systems, schools, workplaces, and other public systems.

• Philadelphia Water DepartmentPA1510001 · CWS · Population served: 1,600,000
• Aqua Pa Main SystemPA1460073 · CWS · Population served: 822,600
• Pa Amer Water Co-PittsburghPA5020039 · CWS · Population served: 686,000
• Pittsburgh Water & Sewer AuthPA5020038 · CWS · Population served: 520,000
• Erie City Water AuthorityPA6250028 · CWS · Population served: 220,001
• York Water CoPA7670100 · CWS · Population served: 206,762
• West View Water AuthorityPA5020043 · CWS · Population served: 200,000
• Mawc Sweeney PlantPA5650032 · CWS · Population served: 143,000
• Chester Water AuthorityPA1230004 · CWS · Population served: 140,437
• Pa Amer Water Co Lake ScrantonPA2359008 · CWS · Population served: 137,142
• Mawc Yough PlantPA5260036 · CWS · Population served: 133,000
• Wilkinsburg-Penn Jt Water AuthPA5020056 · CWS · Population served: 125,000
• City of LancasterPA7360058 · CWS · Population served: 120,000
• Lca Allentown DivisionPA3390024 · CWS · Population served: 118,000
• City of BethlehemPA3480046 · CWS · Population served: 117,259
• Veolia WaterPA7220015 · CWS · Population served: 110,000
• Pa American Water Co WestPA7210029 · CWS · Population served: 105,127
• Easton Area Water SystemPA3480050 · CWS · Population served: 96,867
• Reading Area Water AuthorityPA3060059 · CWS · Population served: 95,100
• North Penn Water AuthorityPA1460034 · CWS · Population served: 91,941
• Pa American NorristownPA1460046 · CWS · Population served: 88,885
• North Wales Water AuthorityPA1460048 · CWS · Population served: 72,496
• State College Boro Water AuthPA4140096 · CWS · Population served: 72,000
• Capital Region WaterPA7220049 · CWS · Population served: 66,540
• Lower Bucks Co Joint Mun AuthPA1090026 · CWS · Population served: 63,007
• Altoona Water AuthorityPA4070023 · CWS · Population served: 62,500
• Hampton Shaler Water AuthorityPA5020019 · CWS · Population served: 61,949
• Aqua Pa BensalemPA1090078 · CWS · Population served: 59,001
• Paw CeasetownPA2409002 · CWS · Population served: 58,467
• Lebanon Water AuthPA7380010 · CWS · Population served: 57,000
• Paw NesbittPA2409010 · CWS · Population served: 52,640
• Bcwsa Main Lower SouthPA1090079 · CWS · Population served: 52,621
• Paw WatresPA2409011 · CWS · Population served: 52,002
• Williamsport Mun Water AuthPA4410173 · CWS · Population served: 51,000
• Pa Amer Water CoPA7220017 · CWS · Population served: 50,200
• Pa American RoyersfordPA1150166 · CWS · Population served: 49,508
• Beaver Falls Muni AuthPA5040012 · CWS · Population served: 49,500
• Greater Johnstown Wa RiversidePA4110034 · CWS · Population served: 49,500
• Aqua Pa West ChesterPA1150098 · CWS · Population served: 48,600
• Monroeville Municipal AuthPA5020027 · CWS · Population served: 48,500
• Aqua Pa Shenango Valley WtpPA6430054 · CWS · Population served: 48,000
• New Kensington Muni AuthPA5650070 · CWS · Population served: 47,800
• Lca Wlsa Central DivisionPA3390073 · CWS · Population served: 47,693
• Veolia MechanicsburgPA7210028 · CWS · Population served: 45,013
• Hca Hazleton DivisionPA2408001 · CWS · Population served: 45,000
• Pa American Water Co ButlerPA5100012 · CWS · Population served: 43,286
• Pa Amer Water Co New CastlePA6370034 · CWS · Population served: 43,279
• Aqua Pa Roaring Creek DivisionPA4490024 · CWS · Population served: 43,000
• Cranberry Twp WtpPA5100094 · CWS · Population served: 42,000
• Hanover Muni Water WorksPA7670076 · CWS · Population served: 40,900
• Southwestern Pa Water AuthPA5300017 · CWS · Population served: 40,200
• Northampton Boro Muni AuthPA3480057 · CWS · Population served: 40,000
• Oakmont Water AuthorityPA5020036 · CWS · Population served: 39,901
• Newtown Artesian Water CoPA1090043 · CWS · Population served: 38,500
• Moon Twp Muni AuthPA5020011 · CWS · Population served: 38,000
• Penn State UnivPA4140095 · CWS · Population served: 37,000
• Pa American CoatesvillePA1150106 · CWS · Population served: 36,960
• Northampton Bucks Co Mun AuthPA1090089 · CWS · Population served: 36,750
• Pottstown Borough Water AuthPA1460037 · CWS · Population served: 36,000
• Warminster Municipal AuthorityPA1090069 · CWS · Population served: 36,000
• Aqua Pa UwchlanPA1150035 · CWS · Population served: 35,518
• North Fayette Cnty Muni AuthPA5260019 · CWS · Population served: 35,409
• Pa American Water Co YardleyPA1090074 · CWS · Population served: 33,171
• West Cnty Muni Auth-MckeesportPA5020025 · CWS · Population served: 32,644
• Schuylkill Co Mun AuthPA3540038 · CWS · Population served: 31,850
• Chambersburg Boro Water SysPA7280005 · CWS · Population served: 31,048
• Pa American White DeerPA4490023 · CWS · Population served: 30,209
• Brodhead Creek Reg Water AuthPA2450034 · CWS · Population served: 30,000
• Latrobe Muni AuthPA5650060 · CWS · Population served: 30,000
• Mifflin Cnty Muni AuthPA4440010 · CWS · Population served: 29,432
• Veolia Water Pa Inc BloomsburgPA4190008 · CWS · Population served: 29,382
• Aqua Pa BristolPA1090001 · CWS · Population served: 28,727
• Paw Penn DistrictPA3060069 · CWS · Population served: 28,508
• Guilford Water AuthPA7280038 · CWS · Population served: 28,135
• Plum Boro Muni AuthPA5020041 · CWS · Population served: 27,500
• Auth of Boro of CharleroiPA5630039 · CWS · Population served: 27,000
• Carlisle Water Trmt PltPA7210002 · CWS · Population served: 26,000
• Horsham Water&Sewer AuthorityPA1460033 · CWS · Population served: 26,000
• Columbia Water CoPA7360123 · CWS · Population served: 25,200
• Paw Glen Alsace DivPA3060088 · CWS · Population served: 24,951
• Ephrata Area Joint AuthorityPA7360045 · CWS · Population served: 24,500
• Falls Twp Water & Sewer DeptPA1090022 · CWS · Population served: 24,400
• Paw Blue Mountain DivisionPA3480055 · CWS · Population served: 23,763
• Pa-American Water- UniontownPA5260020 · CWS · Population served: 23,125
• Highland S & W Auth BeaverdamPA4110017 · CWS · Population served: 22,617
• Muhlenberg Twp Muni AuthPA3060038 · CWS · Population served: 22,400
• Pa American Water Co-Indiana DPA5320025 · CWS · Population served: 22,360
• Nwwa Warrington TownshipPA1090070 · CWS · Population served: 21,588
• Dover Twp Water SysPA7670073 · CWS · Population served: 21,097
• East Hempfield Water AuthPA7360063 · CWS · Population served: 20,988
• Paw PhilipsburgPA4140087 · CWS · Population served: 20,865
• Ambler Boro Water DeptPA1460020 · CWS · Population served: 20,000
• St Marys Area Water AuthPA6240016 · CWS · Population served: 19,588
• Ambridge Water AuthPA5040008 · CWS · Population served: 19,500
• Western Allegheny County Mun APA5020034 · CWS · Population served: 19,031
• Center Twp Water AuthPA5040007 · CWS · Population served: 19,000
• Elizabethtown Area WaterPA7360124 · CWS · Population served: 19,000
• Bradford City Water AuthorityPA6420014 · CWS · Population served: 18,500
• Fox Chapel AuthPA5020040 · CWS · Population served: 18,500
• Pawc Pocono DistrictPA2450063 · CWS · Population served: 17,860