State rankings
Pennsylvania water-system rankings
Lowest-scoring systems in Pennsylvania
Ranked lowest score first. Population shown for context.
1 PALMERTON MUNICIPAL AUTHORITY PALMERTON, PA · ~7,000 served 0 2 EMMAUS BOROUGH PUBLIC WATER EMMAUS, PA · ~14,000 served 1 3 QUAKERTOWN BORO QUAKERTOWN, PA · ~12,800 served 1 4 HORSHAM WATER&SEWER AUTHORITY HORSHAM, PA · ~26,000 served 25 5 BEAVER BORO MUNI AUTH BEAVER, PA · ~5,799 served 27 6 AMBLER BORO WATER DEPT AMBLER, PA · ~20,000 served 34 7 UPPER SOUTHAMPTON MUN AUTH SOUTHAMPTON, PA · ~16,000 served 34 8 DTMA MAIN SYSTEM DOYLESTOWN, PA · ~8,655 served 34 9 COLLEGEVILLE TRAPPE JOINT PWD TRAPPE, PA · ~8,470 served 34 10 N MIDDLETON WATER AUTH CARLISLE, PA · ~8,455 served 34 11 VEOLIA NEWBERRY SYSTEM HARRISBURG, PA · ~6,480 served 34 12 KENNETT SQUARE MUN WATER WORKS KENNETT SQUARE, PA · ~6,328 served 34 13 BUCKINGHAM TWP COLD SPRING BUCKINGHAM, PA · ~4,760 served 34 14 MANHEIM AREA WATER & SEWER AUT MANHEIM, PA · ~6,701 served 35 15 AQUA PA BENSALEM BRYN MAWR, PA · ~59,001 served 37 16 GETTYSBURG MUNI AUTH GETTYSBURG, PA · ~12,425 served 38 17 CORAOPOLIS WATER & SEWER AUTH CORAOPOLIS, PA · ~5,804 served 39 18 RICHLAND TWP WATER AUTHORITY QUAKERTOWN, PA · ~6,800 served 40 19 PA AMERICAN AUDUBON NORRISTOWN, PA · ~8,200 served 42 20 HILLTOWN TWP WATER&SEWER AUTH SELLERSVILLE, PA · ~5,770 served 42 21 PAW PENN DISTRICT READING, PA · ~28,508 served 43 22 WARWICK TWP WATER & SEWER AUTH JAMISON, PA · ~14,699 served 43 23 DOYLESTOWN BORO WATER DEPT DOYLESTOWN, PA · ~8,700 served 43 24 MONTOURSVILLE WATER COMPANY MONTOURSVILLE, PA · ~4,983 served 43 25 PA AMERICAN WATER CO YARDLEY YARDLEY, PA · ~33,171 served 46
Highest-scoring large systems in Pennsylvania
Systems serving 10,000+ people with the best scores.
1 PA AMER WATER CO-PITTSBURGH MCMURRAY, PA · ~686,000 served 100 2 PITTSBURGH WATER & SEWER AUTH PITTSBURGH, PA · ~520,000 served 100 3 ERIE CITY WATER AUTHORITY ERIE, PA · ~220,001 served 100 4 YORK WATER CO YORK, PA · ~206,762 served 100 5 WEST VIEW WATER AUTHORITY PITTSBURGH, PA · ~200,000 served 100 6 MAWC SWEENEY PLANT GREENSBURG, PA · ~143,000 served 100 7 MAWC YOUGH PLANT GREENSBURG, PA · ~133,000 served 100 8 WILKINSBURG-PENN JT WATER AUTH WILKINSBURG, PA · ~125,000 served 100
Scores reflect EPA public records (violations, enforcement, PFAS), are system-level, and can’t account for your home’s plumbing. See the methodology.