Pennsylvania Drinking Water Compliance Records
1,851 water systems serving 11,467,074 people. 229,177 historical EPA violation records in the Q2 2026 snapshot.
TapScore Compliance-History Grades
A
261
14%
B
299
16%
C
931
50%
D
328
18%
F
32
2%
1,851
Water Systems
11,467,074
Population Served
229,177
Historical Records
7,233
Health-Based (All Years)
Systems With the Most Recent EPA Records
SUNRISE LAKES SEC 12
125 served2,323 historical records1,701 recent
C
COUNTRY GLEN TOWNHOMES
50 served1,094 historical records1,094 recent
C
SUNRISE LAKE SECTION 9
125 served1,218 historical records870 recent
C
OVERPECK MHP
25 served792 historical records784 recent
D
PA AMERICAN AUDUBON
8,200 served1,560 historical records747 recent
C
BEAVER RUN WATER ASSOCIATION
50 served782 historical records661 recent
C
BIG BASS LAKE WATER ASSOC.
130 served703 historical records475 recent
D
SALEM HEIGHTS ESTATE
62 served1,421 historical records456 recent
C
COOPERSTOWN WATER COMPANY
360 served359 historical records330 recent
D
PINECREST VILLAGE MHP
195 served720 historical records325 recent
F
Large Systems With No Recent Records
PA AMER WATER CO-PITTSBURGH
686,000 served6 historical records
A
CHESTER WATER AUTHORITY
140,437 served2 historical records
A
PA AMER WATER CO LAKE SCRANTON
137,142 served17 historical records
A
EASTON AREA WATER SYSTEM
96,867 served67 historical records
A
NORTH PENN WATER AUTHORITY
91,941 served94 historical records
A
HAMPTON SHALER WATER AUTHORITY
61,949 served27 historical records
A
PAW CEASETOWN
58,467 served1 historical record
A
PAW NESBITT
52,640 served6 historical records
A
PAW WATRES
52,002 served6 historical records
A
WILLIAMSPORT MUN WATER AUTH
51,000 served32 historical records
A
Largest Water Systems in Pennsylvania
| Water System | Grade | Population | Historical Records |
|---|---|---|---|
| PHILADELPHIA WATER DEPARTMENT | C | 1,600,000 | 64 |
| AQUA PA MAIN SYSTEM | D | 822,600 | 112 |
| PA AMER WATER CO-PITTSBURGH | A | 686,000 | 6 |
| PITTSBURGH WATER & SEWER AUTH | C | 520,000 | 74 |
| ERIE CITY WATER AUTHORITY | C | 220,001 | 197 |
| YORK WATER CO | C | 206,762 | 20 |
| WEST VIEW WATER AUTHORITY | B | 200,000 | 79 |
| MAWC SWEENEY PLANT | C | 143,000 | 30 |
| CHESTER WATER AUTHORITY | A | 140,437 | 2 |
| PA AMER WATER CO LAKE SCRANTON | A | 137,142 | 17 |
| MAWC YOUGH PLANT | D | 133,000 | 57 |
| WILKINSBURG-PENN JT WATER AUTH | C | 125,000 | 100 |
| CITY OF LANCASTER | C | 120,000 | 53 |
| LCA ALLENTOWN DIVISION | C | 118,000 | 14 |
| CITY OF BETHLEHEM | C | 117,259 | 67 |
| VEOLIA WATER | C | 110,000 | 41 |
| PA AMERICAN WATER CO WEST | B | 105,127 | 9 |
| EASTON AREA WATER SYSTEM | A | 96,867 | 67 |
| READING AREA WATER AUTHORITY | C | 95,100 | 59 |
| NORTH PENN WATER AUTHORITY | A | 91,941 | 94 |
Contaminants in Pennsylvania
Lead in PennsylvaniaArsenic in PennsylvaniaNitrate in PennsylvaniaFluoride in PennsylvaniaPFOS in PennsylvaniaPFOA in PennsylvaniaTHMs in PennsylvaniaHAA5 in Pennsylvania
Cities in Pennsylvania
PHILADELPHIA(1)BRYN MAWR(25)PITTSBURGH(13)ELRAMA(1)GREENSBURG(5)HARRISBURG(16)ERIE(6)YORK(13)ALLENTOWN(18)SCRANTON(12)READING(10)MECHANICSBURG(8)WILKES BARRE(6)NEW CASTLE(13)CHESTER(1)WILKINSBURG(1)BETHLEHEM(13)LANCASTER(10)NORRISTOWN(8)NORTH WALES(8)EASTON(6)LANSDALE(4)JOHNSTOWN(8)STATE COLLEGE(4)SHARON(11)LEVITTOWN(1)ALTOONA(3)ALLISON PARK(1)LEBANON(5)WARRINGTON(7)CHAMBERSBURG(5)SHAMOKIN(8)HUMMELSTOWN(2)BEAVER FALLS(2)WILLIAMSPORT(5)SPRING CITY(1)MONROEVILLE(1)EAST STROUDSBURG(13)NEW KENSINGTON(1)HAZLETON(5)CRANBERRY TWP(2)NORTHAMPTON(7)HANOVER(1)NEWTOWN(4)CARLISLE(9)COATESVILLE(11)JEFFERSON(1)POTTSTOWN(6)OAKMONT(1)MOON TOWNSHIP(1)UNIVERSITY PARK(1)RICHBORO(1)WHITE HAVEN(52)POTTSVILLE(6)WARMINSTER(1)DUNBAR(1)ALIQUIPPA(2)UNIONTOWN(2)CLARKS SUMMIT(3)YARDLEY(1)BLOOMSBURG(5)LATROBE(1)MILROY(2)COLUMBIA(3)CHARLEROI(1)HORSHAM(1)MILTON(9)EPHRATA(3)QUAKERTOWN(4)ELIZABETHTOWN(16)FAIRLESS HILLS(1)PHILIPSBURG(5)DOVER(5)BUSHKILL(13)LITITZ(8)TOBYHANNA(3)WAYNESBORO(5)SELLERSVILLE(3)LANDISVILLE(1)OAKDALE(3)BLAIRSVILLE(3)AMBLER(2)MEADVILLE(9)AMBRIDGE(3)SAINT MARYS(1)BRADFORD(1)SHIPPENSBURG(3)NATRONA HEIGHTS(2)DOYLESTOWN(3)BELLEFONTE(7)PHOENIXVILLE(1)WARREN(4)GETTYSBURG(5)SOUTHAMPTON(1)HUNTINGDON(2)SLIPPERY ROCK(3)KUTZTOWN(6)RED LION(1)SAYRE(2)MOUNT JOY(1)