U.S. water systems

Pennsylvania Water Systems

Pennsylvania

4,325 community water systems on record — 1,851 active, 2,474 inactive.

Every active community water system nationwide must produce a Consumer Confidence Report under the EPA's revised rule, effective for reports due July 1, 2027.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Pennsylvania’s official records. Always confirm current status with Pennsylvania before making decisions based on this information.

Counties in Pennsylvania

Adams County (72)Allegheny County (87)Armstrong County (51)Beaver County (75)Bedford County (40)Berks County (140)Blair County (61)Bradford County (44)Bucks County (153)Butler County (143)Cambria County (78)Cameron County (6)Carbon County (49)Centre County (72)Chester County (212)Clarion County (40)Clearfield County (53)Clinton County (42)Columbia County (54)Crawford County (81)Cumberland County (66)Dauphin County (60)Delaware County (23)Elk County (21)Erie County (97)Fayette County (45)Forest County (5)Franklin County (67)Fulton County (6)Greene County (16)Huntingdon County (34)Indiana County (67)Jefferson County (23)Juniata County (17)Lackawanna County (94)Lancaster County (181)Lawrence County (58)Lebanon County (50)Lehigh County (109)Luzerne County (169)Lycoming County (82)McKean County (42)Mercer County (74)Mifflin County (20)Monroe County (142)Montgomery County (92)Montour County (15)Northampton County (92)Northumberland County (33)Perry County (40)Philadelphia County (9)Pike County (100)Potter County (17)Schuylkill County (72)Snyder County (29)Somerset County (61)Sullivan County (5)Susquehanna County (52)Tioga County (56)Union County (12)Venango County (48)Warren County (45)Washington County (71)Wayne County (60)Westmoreland County (104)Wyoming County (52)York County (133)

All community water systems in Pennsylvania

System name	Mailing city	Population served	Status
PHILADELPHIA WATER DEPARTMENT	PHILADELPHIA	1,950,098	Inactive
PHILADELPHIA WATER DEPARTMENT	PHILADELPHIA	1,600,000	Active
PHILADELPHIA SUBURBAN WATER CO	BRYN MAWR	900,000	Inactive
AQUA PA MAIN SYSTEM	BRYN MAWR	822,600	Active
PHILA SUB WATER CO	BRYN MAWR	759,135	Inactive
PA AMER WATER CO-PITTSBURGH	ELRAMA	686,000	Active
QUEEN LANE WATER PLANT	PHILADELPHIA	535,000	Inactive
PITTSBURGH WATER & SEWER AUTH	PITTSBURGH	520,000	Active
PA GAS AND WATER CO-CENTRAL DI	SCRANTON	453,000	Inactive
BELMONT WATER TREATMENT PLANT	PHILADELPHIA	320,000	Inactive
ERIE CITY WATER AUTHORITY	ERIE	220,001	Active
YORK WATER CO	YORK	206,762	Active
WEST VIEW WATER AUTHORITY	PITTSBURGH	200,000	Active
PA GAS & WATER COMPANY	WILKES-BARRE	146,568	Inactive
PA GAS & WATER COMPANY	WILKES-BARRE	146,568	Inactive
MAWC SWEENEY PLANT	GREENSBURG	143,000	Active
PA GAS & WATER COMPANY	WILKES-BARRE	141,281	Inactive
CHESTER WATER AUTHORITY	CHESTER	140,437	Active
PA AMER WATER CO LAKE SCRANTON	WILKES BARRE	137,142	Active
MAWC YOUGH PLANT	GREENSBURG	133,000	Active
PHILADELPHIA SUBURBAN WATER CO	BRYN MAWR	130,000	Inactive
WESTERN PENNSYLVANIA WATER CO	PITTSBURGH	127,000	Inactive
WILKINSBURG-PENN JT WATER AUTH	WILKINSBURG	125,000	Active
CITY OF LANCASTER	LANCASTER	120,000	Active
LCA ALLENTOWN DIVISION	ALLENTOWN	118,000	Active
CITY OF BETHLEHEM	BETHLEHEM	117,259	Active
PA AMERICAN-CANONS/WASHINGTON	MCMURRAY	114,135	Inactive
VEOLIA WATER	HARRISBURG	110,000	Active
PA AMERICAN WATER CO WEST	MECHANICSBURG	105,127	Active
PA GAS AND WATER CO - NORT DI	SCRANTON	102,000	Inactive
EASTON AREA WATER SYSTEM	EASTON	96,867	Active
READING AREA WATER AUTHORITY	READING	95,100	Active
NORTH PENN WATER AUTHORITY	LANSDALE	91,941	Active
PA AMERICAN NORRISTOWN	NORRISTOWN	88,885	Active
NORTH WALES WATER AUTHORITY	NORTH WALES	72,496	Active
STATE COLLEGE BORO WATER AUTH	STATE COLLEGE	72,000	Active
PHILA SUB.WATER CO.CRUM CREEK	BRYN MAWR	70,000	Inactive
PA GAS & WATER COMPANY	WILKES-BARRE	68,474	Inactive
CAPITAL REGION WATER	HARRISBURG	66,540	Active
LOWER BUCKS CO JOINT MUN AUTH	LEVITTOWN	63,007	Active
ALTOONA WATER AUTHORITY	ALTOONA	62,500	Active
HAMPTON SHALER WATER AUTHORITY	ALLISON PARK	61,949	Active
PLYMOUTH RELIEF	WILKES BARRE	59,039	Inactive
AQUA PA BENSALEM	BRYN MAWR	59,001	Active
EASTON SUBURBAN WATER AUTH	EASTON	58,900	Inactive
P G W MUNDYS GLEN	WILKES BARRE	58,856	Inactive
PAW CEASETOWN	SCRANTON	58,467	Active
PG&W GARDNER-MILL CREEK	WILKES BARRE	58,179	Inactive
LEBANON WATER AUTH	LEBANON	57,000	Active
PAW NESBITT	SCRANTON	52,640	Active
BCWSA MAIN LOWER SOUTH	WARRINGTON	52,621	Active
PAW WATRES	SCRANTON	52,002	Active
WILLIAMSPORT MUN WATER AUTH	WILLIAMSPORT	51,000	Active
PA AMER WATER CO	HUMMELSTOWN	50,200	Active
N KENSINGTON WATER PLANT	NEW KENSINGTON	50,000	Inactive
P G AND ELMHURST 7	WILKES BARRE	49,547	Inactive
PA AMERICAN ROYERSFORD	SPRING CITY	49,508	Active
BEAVER FALLS MUNI AUTH	BEAVER FALLS	49,500	Active
GREATER JOHNSTOWN WA RIVERSIDE	JOHNSTOWN	49,500	Active
AQUA PA WEST CHESTER	BRYN MAWR	48,600	Active
MONROEVILLE MUNICIPAL AUTH	MONROEVILLE	48,500	Active
AQUA PA SHENANGO VALLEY WTP	SHARON	48,000	Active
NEW KENSINGTON MUNI AUTH	NEW KENSINGTON	47,800	Active
LCA WLSA CENTRAL DIVISION	ALLENTOWN	47,693	Active
NESHAMINY CREEK WATER PLANT	BRYN MAWR	46,000	Inactive
VEOLIA MECHANICSBURG	HARRISBURG	45,013	Active
HCA HAZLETON DIVISION	HAZLETON	45,000	Active
P G AND W BRACE BROOK	WILKES BARRE	44,662	Inactive
PA AMERICAN WATER CO BUTLER	NEW CASTLE	43,286	Active
PA AMER WATER CO NEW CASTLE	NEW CASTLE	43,279	Active
AQUA PA ROARING CREEK DIVISION	SHAMOKIN	43,000	Active
CRANBERRY TWP WTP	CRANBERRY TWP	42,000	Active
HAZELTON WATER AUTHORITY	HAZLETON	41,400	Inactive
HANOVER MUNI WATER WORKS	HANOVER	40,900	Active
PA AM CAP DIV Y B II	CAMP HILL	40,500	Inactive
SOUTHWESTERN PA WATER AUTH	JEFFERSON	40,200	Active
NORTHAMPTON BORO MUNI AUTH	NORTHAMPTON	40,000	Active
OAKMONT WATER AUTHORITY	OAKMONT	39,901	Active
NEWTOWN ARTESIAN WATER CO	NEWTOWN	38,500	Active
MOON TWP MUNI AUTH	MOON TOWNSHIP	38,000	Active
PENN STATE UNIV	UNIVERSITY PARK	37,000	Active
PSW RIDLEY CREEK	BRYN MAWR	36,975	Inactive
PA AMERICAN COATESVILLE	COATESVILLE	36,960	Active
NORTHAMPTON BUCKS CO MUN AUTH	RICHBORO	36,750	Active
PA GAS & WATER COMPANY	WILKES-BARRE	36,503	Inactive
BCWSA MIDDLETOWN	WARRINGTON	36,500	Inactive
POTTSTOWN BOROUGH WATER AUTH	POTTSTOWN	36,000	Active
WARMINSTER MUNICIPAL AUTHORITY	WARMINSTER	36,000	Active
WEST PA WATER CO-BUTLER DIST	BUTLER	35,700	Inactive
AQUA PA UWCHLAN	BRYN MAWR	35,518	Active
NORTH FAYETTE CNTY MUNI AUTH	DUNBAR	35,409	Active
SOUTHWESTERN PA WATER AUTH	JEFFERSON	35,000	Inactive
PA AMERICAN WATER CO YARDLEY	YARDLEY	33,171	Active
WEST CNTY MUNI AUTH-MCKEESPORT	GREENSBURG	32,644	Active
SCHUYLKILL CO MUN AUTH	POTTSVILLE	31,850	Active
CHAMBERSBURG BORO WATER SYS	CHAMBERSBURG	31,048	Active
PA AMERICAN WHITE DEER	MECHANICSBURG	30,209	Active
BRODHEAD CREEK REG WATER AUTH	EAST STROUDSBURG	30,000	Active
LATROBE MUNI AUTH	LATROBE	30,000	Active
MIFFLIN CNTY MUNI AUTH	MILROY	29,432	Active
VEOLIA WATER PA INC BLOOMSBURG	BLOOMSBURG	29,382	Active
AQUA PA BRISTOL	BRYN MAWR	28,727	Active
PAW PENN DISTRICT	READING	28,508	Active
GUILFORD WATER AUTH	CHAMBERSBURG	28,135	Active
MILL CREEK	WILKES BARRE	27,903	Inactive
PLUM BORO MUNI AUTH	PITTSBURGH	27,500	Active
AUTH OF BORO OF CHARLEROI	CHARLEROI	27,000	Active
P G AND W DUNMORE 1	WILKES BARRE	26,952	Inactive
CARLISLE WATER TRMT PLT	CARLISLE	26,000	Active
HORSHAM WATER&SEWER AUTHORITY	HORSHAM	26,000	Active
WESTERN PA W CO-WASHINGTON DIS	WASHINGTON	26,000	Inactive
COLUMBIA WATER CO	COLUMBIA	25,200	Active
PAW GLEN ALSACE DIV	MECHANICSBURG	24,951	Active
HAMPTON TWP MUNI AUTH	ALLISON PARK	24,546	Inactive
EPHRATA AREA JOINT AUTHORITY	EPHRATA	24,500	Active
FALLS TWP WATER & SEWER DEPT	FAIRLESS HILLS	24,400	Active
PAW BLUE MOUNTAIN DIVISION	CLARKS SUMMIT	23,763	Active
PA-AMERICAN WATER- UNIONTOWN	UNIONTOWN	23,125	Active
BEAVER FALLS MA- NEW BRIGHTON	BEAVER FALLS	23,099	Inactive
HIGHLAND S & W AUTH BEAVERDAM	JOHNSTOWN	22,617	Active
MUHLENBERG TWP MUNI AUTH	READING	22,400	Active
PA AMERICAN WATER CO-INDIANA D	NEW CASTLE	22,360	Active
PA GAS & WATER COMPANY	WILKES-BARRE	22,212	Inactive
NWWA WARRINGTON TOWNSHIP	NORTH WALES	21,588	Active
DOVER TWP WATER SYS	DOVER	21,097	Active
EAST HEMPFIELD WATER AUTH	LANDISVILLE	20,988	Active
PAW PHILIPSBURG	PHILIPSBURG	20,865	Active
AMBLER BORO WATER DEPT	AMBLER	20,000	Active
PA GAS & WATER COMPANY	WILKES-BARRE	19,931	Inactive
ST MARYS AREA WATER AUTH	SAINT MARYS	19,588	Active
AMBRIDGE WATER AUTH	AMBRIDGE	19,500	Active
WESTERN ALLEGHENY COUNTY MUN A	OAKDALE	19,031	Active
CENTER TWP WATER AUTH	ALIQUIPPA	19,000	Active
ELIZABETHTOWN AREA WATER	ELIZABETHTOWN	19,000	Active
MILLCREEK TWP WATER AUTH	ERIE	19,000	Inactive
BRADFORD CITY WATER AUTHORITY	BRADFORD	18,500	Active
FOX CHAPEL AUTH	PITTSBURGH	18,500	Active
PAWC POCONO DISTRICT	TOBYHANNA	17,860	Active
SHIPPENSBURG BORO WATER AUTH	SHIPPENSBURG	17,800	Active
MEADVILLE AREA WATER AUTHORITY	MEADVILLE	17,339	Active
PAWC HILLSIDE FILTER PLANT	WILKES BARRE	17,269	Inactive
PA AMER WATER CO ELLWOOD CTY	NEW CASTLE	17,200	Active
PHOENIXVILLE WATER DEPT	PHOENIXVILLE	16,599	Active
ROBINSON TWP MUNI AUTH	PITTSBURGH	16,354	Active
PA AM CAP DIV Y B I	CAMP HILL	16,250	Inactive
HIGHRIDGE WATER AUTH	BLAIRSVILLE	16,000	Active
UPPER SOUTHAMPTON MUN AUTH	SOUTHAMPTON	16,000	Active
RED LION MUNICIPAL AUTHORITY	RED LION	15,882	Active
SLIPPERY ROCK MUNI AUTH	SLIPPERY ROCK	15,778	Active
MUN WATER AUTH OF ALIQUIPPA	ALIQUIPPA	15,685	Active
AQUA PA SUSQUEHANNA DIVISION	SAYRE	15,569	Active
PA AMERICAN WATER BERWICK	MILTON	15,282	Active
MT JOY BORO AUTH	MOUNT JOY	15,261	Active
COATESVILLE AUTHORITY	COATESVILLE	15,000	Inactive
CRESWELL HEIGHTS JT AUTH	SOUTH HEIGHTS	15,000	Active
PERKASIE REGIONAL AUTHORITY	SELLERSVILLE	15,000	Active
WARWICK TWP WATER & SEWER AUTH	JAMISON	14,699	Active
PA AMERICAN WATER CO WARREN	WARREN	14,650	Active
PENN AMERICAN - ABINGTON DIST.	CLARKS SUMMIT	14,500	Inactive
SWT MAIN SYSTEM	ALLENTOWN	14,500	Active
KUTZTOWN BOROUGH WATER	KUTZTOWN	14,200	Active
CLEARFIELD MUNICIPAL AUTH	CLEARFIELD	14,000	Active
EMMAUS BOROUGH PUBLIC WATER	EMMAUS	14,000	Active
MONONGAHELA CITY WATER WORKS	MONONGAHELA	14,000	Inactive
HUNTINGDON BORO WATER DEPT	HUNTINGDON	13,776	Active
HARRISON TWP WATER AUTH	NATRONA HEIGHTS	13,411	Active
MORRISVILLE MUNIC AUTHORITY	MORRISVILLE	13,342	Active
SHILLINGTON MUNI AUTH	READING	13,300	Active
BORO OF WAYNESBORO	WAYNESBORO	13,200	Active
WHITEHALL TWP AUTHORITY	WHITEHALL	13,063	Active
CLEARVIEW WATER SUPPLY COMPANY	NATRONA HEIGHTS	13,000	Inactive
E STROUDSBURG BORO WATER DEPT	EAST STROUDSBURG	13,000	Active
WESTERN PA WATER-MONONGAHELA	MONONGAHELA	13,000	Inactive
AQUA PA HATBORO	BRYN MAWR	12,901	Active
QUAKERTOWN BORO	QUAKERTOWN	12,800	Active
BEAR VALLEY JOINT AUTH	ST THOMAS	12,589	Active
PA AMER WATER CO BROWNELL	WILKES BARRE	12,560	Active
CITIZENS UTILITES HOME WATER	SPRING CITY (CHESTER	12,506	Inactive
PAWC CHINCHILLA ABINGTON	WILKES BARRE	12,505	Inactive
SUMMIT TOWNSHIP WATER AUTHORIT	ERIE	12,500	Active
GETTYSBURG MUNI AUTH	GETTYSBURG	12,425	Active
DALLASTOWN YOE WATER AUTH	DALLASTOWN	12,300	Active
BRUCE PENN HOME DEV-C/O UPR MA	BRENIGSVILLE	12,000	Inactive
PAW HUNTSVILLE	SCRANTON	11,987	Active
NORTH VERSAILLES TWP AUTH	NORTH VERSAILLES	11,718	Inactive
SOUTH MIDDLETON TWP WATER AUTH	BOILING SPRINGS	11,695	Active
FINDLAY TWP MUNICIPAL AUTH	CLINTON	11,460	Active
PA-AMERICAN WATER CO-CONNELLSV	UNIONTOWN	11,425	Active
AQUA PA SUPERIOR MAIN SYSTEM	BRYN MAWR	11,400	Active
KEYSTONE WATER CO-PALMYRA DIST	PALMYRA	11,290	Inactive
HAZLETON CITY AUTH WATER DEPT	HAZLETON	11,135	Inactive
WESTERN PA WATER CO MCDONALD	MCDONALD	11,069	Inactive
MUNICIPAL AUTHORITY SUNBURY	SUNBURY	11,043	Active
PHILADELPHIA SUBURBAN WATER CO	BRYN MAWR	10,816	Inactive
HAZLETON CITY AUTH WATER DEPT	HAZLETON	10,778	Inactive
CHEMUNG SPRING WATER COMPANY	CHEMUNG	10,500	Inactive
HARBORCREEK TWP MUN AUTH	HARBORCREEK	10,500	Inactive
SADLER WELLS INC	LACKAWANNA	10,500	Inactive
SOUTH HEIGHTS BORO	SOUTH HEIGHTS	10,500	Inactive
MT PENN BORO MUNI AUTH	READING	10,400	Active

Showing the 200 largest of 4,325 systems on record, by population served. Browse by county above for the full list — every system has its own page, and all of them are in the sitemap.