Pennsylvania Tap Water Quality: Is It Safe to Drink?

2026 EPA water quality data for 150 community water systems serving 3,814,775+ people in Pennsylvania. Find your water system to see violations, PFAS results, lead testing, and a safety grade — free.

Pennsylvania draws drinking water from the Delaware and Susquehanna River watersheds and extensive limestone and sandstone aquifers. Legacy industrial contamination and acid mine drainage affect water sources in the coal and steel regions. Lead from aging infrastructure is a significant concern in Philadelphia, Pittsburgh, and many smaller cities.

Find Your Water System in Pennsylvania

Enter your ZIP code to see EPA violations, lead test results, PFAS data, and a safety grade for your water.

📊 Data from EPA’s SDWIS · 🔄 Updated quarterly · 🏛️ 150+ water systems in Pennsylvania

PHILADELPHIA WATER DEPARTMENT PHILADELPHIA, PA · 1,600,000 people · Surface Water AQUA PA MAIN SYSTEM BRYN MAWR, PA · 822,600 people · Surface Water CHESTER WATER AUTHORITY CHESTER, PA · 140,437 people · Surface Water NORTH PENN WATER AUTHORITY LANSDALE, PA · 91,941 people · Surface Water Purchased PA AMERICAN NORRISTOWN NORRISTOWN, PA · 88,885 people · Surface Water NORTH WALES WATER AUTHORITY NORTH WALES, PA · 72,496 people · Surface Water LOWER BUCKS CO JOINT MUN AUTH LEVITTOWN, PA · 63,007 people · Surface Water AQUA PA BENSALEM BRYN MAWR, PA · 59,001 people · Surface Water Purchased BCWSA MAIN LOWER SOUTH WARRINGTON, PA · 52,621 people · Surface Water Purchased PA AMERICAN ROYERSFORD SPRING CITY, PA · 49,508 people · Surface Water AQUA PA WEST CHESTER BRYN MAWR, PA · 48,600 people · Surface Water NEWTOWN ARTESIAN WATER CO NEWTOWN, PA · 38,500 people · Surface Water Purchased PA AMERICAN COATESVILLE COATESVILLE, PA · 36,960 people · Surface Water NORTHAMPTON BUCKS CO MUN AUTH RICHBORO, PA · 36,750 people · Surface Water Purchased WARMINSTER MUNICIPAL AUTHORITY WARMINSTER, PA · 36,000 people · Surface Water Purchased POTTSTOWN BOROUGH WATER AUTH POTTSTOWN, PA · 36,000 people · Surface Water AQUA PA UWCHLAN BRYN MAWR, PA · 35,518 people · Surface Water Purchased PA AMERICAN WATER CO YARDLEY YARDLEY, PA · 33,171 people · Surface Water AQUA PA BRISTOL BRYN MAWR, PA · 28,727 people · Surface Water HORSHAM WATER&SEWER AUTHORITY HORSHAM, PA · 26,000 people · Surface Water Purchased FALLS TWP WATER & SEWER DEPT FAIRLESS HILLS, PA · 24,400 people · Surface Water Purchased NWWA WARRINGTON TOWNSHIP NORTH WALES, PA · 21,588 people · Surface Water Purchased AMBLER BORO WATER DEPT AMBLER, PA · 20,000 people · Surface Water PHOENIXVILLE WATER DEPT PHOENIXVILLE, PA · 16,599 people · Surface Water UPPER SOUTHAMPTON MUN AUTH SOUTHAMPTON, PA · 16,000 people · Surface Water Purchased AQUA PA SUSQUEHANNA DIVISION SAYRE, PA · 15,569 people · Groundwater PERKASIE REGIONAL AUTHORITY SELLERSVILLE, PA · 15,000 people · Groundwater WARWICK TWP WATER & SEWER AUTH JAMISON, PA · 14,699 people · Surface Water Purchased MORRISVILLE MUNIC AUTHORITY MORRISVILLE, PA · 13,342 people · Surface Water AQUA PA HATBORO BRYN MAWR, PA · 12,901 people · Surface Water Purchased QUAKERTOWN BORO QUAKERTOWN, PA · 12,800 people · Groundwater AQUA PA SUPERIOR MAIN SYSTEM BRYN MAWR, PA · 11,400 people · Surface Water Purchased DOWNINGTOWN WATER AUTHORITY DOWNINGTOWN, PA · 9,900 people · Surface Water AQUA PA FRIENDSHIP BRYN MAWR, PA · 8,800 people · Groundwater DOYLESTOWN BORO WATER DEPT DOYLESTOWN, PA · 8,700 people · Groundwater DTMA MAIN SYSTEM DOYLESTOWN, PA · 8,655 people · Surface Water Purchased COLLEGEVILLE TRAPPE JOINT PWD TRAPPE, PA · 8,470 people · Groundwater PA AMERICAN AUDUBON NORRISTOWN, PA · 8,200 people · Surface Water Purchased AQUA PA SPRING RUN BRYN MAWR, PA · 8,151 people · Surface Water Purchased VEOLIA WATER BETHEL HARRISBURG, PA · 7,809 people · Surface Water Purchased TELFORD BOROUGH AUTHORITY TELFORD, PA · 7,700 people · Surface Water Purchased RICHLAND TWP WATER AUTHORITY QUAKERTOWN, PA · 6,800 people · Groundwater KENNETT SQUARE MUN WATER WORKS KENNETT SQUARE, PA · 6,328 people · Surface Water Purchased AQUA PA CHALFONT BRYN MAWR, PA · 5,900 people · Groundwater HILLTOWN TWP WATER&SEWER AUTH SELLERSVILLE, PA · 5,770 people · Surface Water Purchased OXFORD BOROUGH OXFORD, PA · 5,280 people · Surface Water Purchased SCHWENKSVILLE BOROUGH AUTH SCHWENKSVILLE, PA · 5,200 people · Surface Water Purchased TOWANDA MUNICIPAL AUTHORITY TOWANDA, PA · 5,000 people · GWUDI LONDON GROVE TWP MUN AUTH WEST GROVE, PA · 4,770 people · Surface Water Purchased BUCKINGHAM TWP COLD SPRING BUCKINGHAM, PA · 4,760 people · Groundwater UPPER HANOVER WATER AUTHORITY EAST GREENVILLE, PA · 4,600 people · Groundwater MILFORD TWP WATER AUTHORITY SPINNERSTOWN, PA · 4,497 people · Groundwater BUCKINGHAM TWP FURLONG BUCKINGHAM, PA · 4,150 people · Groundwater AQUA PA PERKIOMEN TOWNSHIP BRYN MAWR, PA · 3,600 people · Groundwater E GREENVILLE BORO WATER DEPT EAST GREENVILLE, PA · 3,100 people · Surface Water BEDMINSTER MUN AUTH PERKASIE, PA · 3,042 people · Groundwater BCWSA NEW HOPE WARRINGTON, PA · 3,017 people · Surface Water NORTH COVENTRY WATER SYSTEM POTTSTOWN, PA · 2,907 people · Surface Water Purchased HONEY BROOK BORO WATER HONEY BROOK, PA · 2,892 people · Groundwater WEST GROVE BOROUGH WEST GROVE, PA · 2,873 people · Groundwater PLUMSTEAD NORTHERN SYSTEM PIPERSVILLE, PA · 2,605 people · Groundwater RED HILL WATER AUTHORITY EAST GREENVILLE, PA · 2,500 people · Groundwater BOROUGH OF DUBLIN DUBLIN, PA · 2,200 people · Groundwater NESHAMINY MANOR CENTER WARRINGTON, PA · 2,100 people · Surface Water Purchased BCWSA SOLEBURY WARRINGTON, PA · 2,100 people · Groundwater CANTON BOROUGH AUTHORITY CANTON, PA · 2,050 people · Groundwater COATESVILLE VETERANS ADM HOSP COATESVILLE, PA · 2,000 people · Surface Water Purchased TWP OF UPPER MAKEFIELD NEWTOWN, PA · 1,800 people · Groundwater WYSOX TWP MUNICIPAL AUTHORITY TOWANDA, PA · 1,763 people · Surface Water Purchased PLUMSTEAD TWP PATRIOTS RIDGE PIPERSVILLE, PA · 1,704 people · Surface Water Purchased ELVERSON WATER COMPANY ELVERSON, PA · 1,641 people · Groundwater AQUA PA HONEYBROOK BRYN MAWR, PA · 1,600 people · Groundwater RICHLANDTOWN WATER DEPARTMENT RICHLANDTOWN, PA · 1,450 people · Groundwater BOROUGH OF ATGLEN ATGLEN, PA · 1,406 people · Groundwater TROY WATER DEPTARTMENT TROY, PA · 1,362 people · Groundwater VILLAGE OF NESHAMINY FALLS NORTH WALES, PA · 1,300 people · Surface Water Purchased VILLAGE OF BUCKINGHAM SPRINGS NEW HOPE, PA · 1,295 people · Groundwater PLUMSTEAD TWP SUMMER HILL MEAD PIPERSVILLE, PA · 1,284 people · Groundwater PARKHOUSE NURSING & REHAB CTR ROYERSFORD, PA · 1,200 people · Groundwater BOROUGH OF AVONDALE AVONDALE, PA · 1,108 people · Groundwater AQUA PA PERKIOMEN WOODS BRYN MAWR, PA · 1,100 people · Groundwater RIEGELSVILLE WATER AUTHORITY RIEGELSVILLE, PA · 980 people · Groundwater TRUMBAUERSVILLE MUN WATERWORKS TRUMBAUERSVILLE, PA · 974 people · Groundwater PEDDLERS VILLAGE LAHASKA, PA · 960 people · Groundwater TEL HAI RETIREMENT COMMUNITY HONEY BROOK, PA · 930 people · Groundwater UMH ARBOR ESTATES MORGANTOWN, WV · 920 people · Groundwater NWWA OLDE COLONIAL GREENE NORTH WALES, PA · 900 people · Groundwater RIDGLEA POTTSTOWN, PA · 900 people · Groundwater WESTTOWN SCHOOL WEST CHESTER, PA · 900 people · Groundwater AQUA PA UPPER PROVIDENCE BRYN MAWR, PA · 810 people · Surface Water Purchased RICHLAND MEADOWS MHP QUAKERTOWN, PA · 750 people · Groundwater HULMEVILLE MUNICIPAL AUTHORITY HULMEVILLE, PA · 750 people · Surface Water Purchased PLUMSTEAD TWP DURHAM RIDGE PIPERSVILLE, PA · 714 people · Groundwater NWWA PINE RUN NORTH WALES, PA · 700 people · Groundwater AQUA PA EAST PIKELAND BRYN MAWR, PA · 675 people · Surface Water Purchased VILLAGE 2 COMMUNITY ASSOC NEW HOPE, PA · 650 people · Groundwater FREDERICK LIVING ZIEGLERVILLE, PA · 640 people · Groundwater SPRINGTOWN WATER AUTHORITY SPRINGTOWN, PA · 600 people · Groundwater AQUA PA PEDDLERS VIEW BRYN MAWR, PA · 600 people · Groundwater INDIAN RUN VILLAGE MHP MORGANTOWN, PA · 550 people · Groundwater PERKIOMEN CROSSING FREDERICK, PA · 508 people · Groundwater AQUA PA SUPERIOR CENTER POINT BRYN MAWR, PA · 500 people · Groundwater ULSTER MUNICIPAL AUTHORITY ULSTER, PA · 500 people · GWUDI NOTTINGHAM MANOR M H COURT NOTTINGHAM, PA · 473 people · Groundwater APPLEVILLE MOBILE HOME PARK COATESVILLE, PA · 461 people · Surface Water Purchased PENNLAND FARMS PERKASIE, PA · 452 people · Groundwater SPRING RUN ESTATES WTP COATESVILLE, PA · 450 people · Groundwater LONGWOOD GARDENS KENNETT SQUARE, PA · 440 people · Surface Water Purchased LERAYSVILLE WATER COMPANY LERAYSVILLE, PA · 360 people · Groundwater NEW ALBANY WATER FUND NEW ALBANY, PA · 336 people · Groundwater Purchased GREEN HILL MHP MORGANTOWN, PA · 323 people · Groundwater AVANTE APARTMENTS GILBERTSVILLE, PA · 315 people · Groundwater SOLEBURY SCHOOL NEW HOPE, PA · 300 people · Groundwater DTMA CEDAR CREST FARMS DOYLESTOWN, PA · 300 people · Surface Water Purchased RESERVE AND RIDGE AT HILLTOWN SELLERSVILLE, PA · 300 people · Surface Water Purchased AVONWHEEL ESTATE MHP LEMOYNE, PA · 300 people · Groundwater JACKSON MHP LANDISBURG, PA · 300 people · Groundwater BUCKINGHAM TWP FIELDSTONE BUCKINGHAM, PA · 281 people · Groundwater AQUA PA FRANKLIN BRYN MAWR, PA · 265 people · Groundwater MALVERN COURTS MHP SACRAMENTO, CA · 250 people · Groundwater COVENTRY TERRACE BANNER ELK, NC · 250 people · Groundwater WETHERILL ESTATES EXTON, PA · 250 people · Groundwater AWC VALLEY FORGE CROSSING MHP NORRISTOWN, PA · 250 people · Groundwater BCWSA FOX RUN PRESERVE WARRINGTON, PA · 220 people · Groundwater HILLTOP MOBILE ESTATES ROYERSFORD, PA · 220 people · Groundwater CREEKVIEW MHP NORRISTOWN, PA · 200 people · Groundwater TOWN AND COUNTRY ESTATES RICHMOND, VA · 200 people · Groundwater BRINTON MANOR GLEN MILLS, PA · 196 people · Groundwater BUCKINGHAM VLY REHAB & NURSING NEWTOWN, PA · 190 people · Groundwater MARTINS COMMUNITY LP MHP COCHRANVILLE, PA · 180 people · Groundwater ARBOUR COURT NASSAU, DE · 180 people · Groundwater DUBLIN ACRES HOMEOWNERS ASSOC DUBLIN, PA · 175 people · Groundwater YERKES WATER ASSOCIATION COLLEGEVILLE, PA · 165 people · Groundwater NWWA DURHAM VILLAGE NORTH WALES, PA · 160 people · Groundwater LONDONDERRY COURT MHP NORTH EAST, MD · 160 people · Surface Water Purchased CAMPHILL SOLTANE GLENMOORE, PA · 152 people · Groundwater IMPERIAL MOBILE HOME PARK MORGANTOWN, PA · 151 people · Groundwater SCENIC VIEW APARTMENTS HELLERTOWN, PA · 150 people · Groundwater AQUA PA SUPERIOR IVY RIDGE BRYN MAWR, PA · 150 people · Groundwater CAMPHILL SPEC SCH BEAVER RUN GLENMOORE, PA · 140 people · Groundwater SPRUCE COURT APARTMENTS JENKINTOWN, PA · 139 people · Groundwater BUCKS RUN APARTMENTS DUBLIN, PA · 130 people · Groundwater LOAGS CORNER MOBILE HOME PARK MORGANTOWN, PA · 130 people · Groundwater BCWSA ST STEPHENS GREENE WARRINGTON, PA · 130 people · Groundwater OAK GROVE PARK MHP HATFIELD, PA · 130 people · Groundwater SHADY GROVE MOBILE HOME PARK NEW LONDON, PA · 129 people · Groundwater GREENTOP MOBILE HOME PARK MORGANTOWN, PA · 120 people · Groundwater TWIN PINES HEALTH CARE CENTER WEST GROVE, PA · 120 people · Groundwater STONE BARN RENTALS KENNETT SQUARE, PA · 120 people · Groundwater WINDHAVEN MHP MALVERN, PA · 112 people · Groundwater

Pennsylvania Drinking Water: Frequently Asked Questions

Is Pennsylvania tap water safe to drink?

Pennsylvania has 150 community water systems regulated by the EPA serving 3,814,775+ residents. Water quality varies by system — search above to find your specific utility and see its violation history, lead test results, and safety grade.

How many water systems are in Pennsylvania?

There are 150 EPA-regulated community water systems in Pennsylvania serving 3,814,775+ residents. Each system is required to test for over 90 contaminants and publicly report any violations.

Does Pennsylvania have PFAS in its drinking water?

PFAS (forever chemicals) have been detected in water systems across the country, including Pennsylvania. The EPA finalized enforceable PFAS limits in 2024. Search for your specific water system above to see if PFAS were detected and whether levels exceed the new federal limits.

EPA data last updated: 2026-06-22