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Employer directory · Pennsylvania

Public water systems in Pennsylvania

259 public water systems in Pennsylvania, 9th among the states. Community drinking-water systems owned by a local, state or federal government and serving 3,301 people or more, from EPA's Safe Drinking Water Information System. Private and tribal systems are not included.

Public water systemPopulation served
PHILADELPHIA WATER DEPARTMENT1,600,000
PITTSBURGH WATER & SEWER AUTH520,000
ERIE CITY WATER AUTHORITY220,001
WEST VIEW WATER AUTHORITY200,000
MAWC SWEENEY PLANT143,000
CHESTER WATER AUTHORITY140,437
MAWC YOUGH PLANT133,000
WILKINSBURG-PENN JT WATER AUTH125,000
CITY OF LANCASTER120,000
LCA ALLENTOWN DIVISION118,000
CITY OF BETHLEHEM117,259
EASTON AREA WATER SYSTEM96,867
READING AREA WATER AUTHORITY95,100
NORTH PENN WATER AUTHORITY91,941
NORTH WALES WATER AUTHORITY72,496
STATE COLLEGE BORO WATER AUTH72,000
CAPITAL REGION WATER66,540
LOWER BUCKS CO JOINT MUN AUTH63,007
ALTOONA WATER AUTHORITY62,500
HAMPTON SHALER WATER AUTHORITY61,949
LEBANON WATER AUTH57,000
BCWSA MAIN LOWER SOUTH52,621
WILLIAMSPORT MUN WATER AUTH51,000
BEAVER FALLS MUNI AUTH49,500
GREATER JOHNSTOWN WA RIVERSIDE49,500
MONROEVILLE MUNICIPAL AUTH48,500
NEW KENSINGTON MUNI AUTH47,800
LCA WLSA CENTRAL DIVISION47,693
HCA HAZLETON DIVISION45,000
CRANBERRY TWP WTP42,000
HANOVER MUNI WATER WORKS40,900
SOUTHWESTERN PA WATER AUTH40,200
NORTHAMPTON BORO MUNI AUTH40,000
OAKMONT WATER AUTHORITY39,901
MOON TWP MUNI AUTH38,000
PENN STATE UNIV37,000
PA AMERICAN COATESVILLE36,960
NORTHAMPTON BUCKS CO MUN AUTH36,750
POTTSTOWN BOROUGH WATER AUTH36,000
WARMINSTER MUNICIPAL AUTHORITY36,000
NORTH FAYETTE CNTY MUNI AUTH35,409
WEST CNTY MUNI AUTH-MCKEESPORT32,644
SCHUYLKILL CO MUN AUTH31,850
CHAMBERSBURG BORO WATER SYS31,048
BRODHEAD CREEK REG WATER AUTH30,000
LATROBE MUNI AUTH30,000
MIFFLIN CNTY MUNI AUTH29,432
GUILFORD WATER AUTH28,135
PLUM BORO MUNI AUTH27,500
AUTH OF BORO OF CHARLEROI27,000
CARLISLE WATER TRMT PLT26,000
HORSHAM WATER&SEWER AUTHORITY26,000
EPHRATA AREA JOINT AUTHORITY24,500
FALLS TWP WATER & SEWER DEPT24,400
HIGHLAND S & W AUTH BEAVERDAM22,617
MUHLENBERG TWP MUNI AUTH22,400
NWWA WARRINGTON TOWNSHIP21,588
DOVER TWP WATER SYS21,097
EAST HEMPFIELD WATER AUTH20,988
AMBLER BORO WATER DEPT20,000
ST MARYS AREA WATER AUTH19,588
AMBRIDGE WATER AUTH19,500
WESTERN ALLEGHENY COUNTY MUN A19,031
CENTER TWP WATER AUTH19,000
ELIZABETHTOWN AREA WATER19,000
BRADFORD CITY WATER AUTHORITY18,500
FOX CHAPEL AUTH18,500
SHIPPENSBURG BORO WATER AUTH17,800
MEADVILLE AREA WATER AUTHORITY17,339
PHOENIXVILLE WATER DEPT16,599
ROBINSON TWP MUNI AUTH16,354
HIGHRIDGE WATER AUTH16,000
UPPER SOUTHAMPTON MUN AUTH16,000
RED LION MUNICIPAL AUTHORITY15,882
SLIPPERY ROCK MUNI AUTH15,778
MUN WATER AUTH OF ALIQUIPPA15,685
MT JOY BORO AUTH15,261
CRESWELL HEIGHTS JT AUTH15,000
PERKASIE REGIONAL AUTHORITY15,000
WARWICK TWP WATER & SEWER AUTH14,699
SWT MAIN SYSTEM14,500
KUTZTOWN BOROUGH WATER14,200
CLEARFIELD MUNICIPAL AUTH14,000
EMMAUS BOROUGH PUBLIC WATER14,000
HUNTINGDON BORO WATER DEPT13,776
HARRISON TWP WATER AUTH13,411
MORRISVILLE MUNIC AUTHORITY13,342
SHILLINGTON MUNI AUTH13,300
BORO OF WAYNESBORO13,200
WHITEHALL TWP AUTHORITY13,063
E STROUDSBURG BORO WATER DEPT13,000
QUAKERTOWN BORO12,800
BEAR VALLEY JOINT AUTH12,589
SUMMIT TOWNSHIP WATER AUTHORIT12,500
GETTYSBURG MUNI AUTH12,425
DALLASTOWN YOE WATER AUTH12,300
SOUTH MIDDLETON TWP WATER AUTH11,695
FINDLAY TWP MUNICIPAL AUTH11,460
MUNICIPAL AUTHORITY SUNBURY11,043
MT PENN BORO MUNI AUTH10,400
RICHLAND TWP WATER AUTHORITY10,190
TRI CNTY JT MUNI AUTH10,100
CITY OF LOCK HAVEN WATER DEPT10,000
WEST MANCHESTER TWP AUTH9,960
DOWNINGTOWN WATER AUTHORITY9,900
SUBURBAN LOCK HAVEN WATER AUTH9,700
ICMSA CROOKED CREEK9,638
OIL CITY9,608
VEOLIA MIDDLETOWN9,600
AQUA SHENANDOAH9,500
BELLEFONTE BOROUGH WATER AUTH9,500
MYERSTOWN WATER AUTH9,500
WINDBER AREA AUTH9,463
LITITZ BORO9,397
LANSFORD COALDALE JT WATER AUT9,300
MUNI AUTH OF WASHINGTON TWP9,100
GENERAL AUTHORITY OF FRANKLIN9,096
LEHIGHTON WATER AUTHORITY9,000
DILLSBURG AREA AUTHORITY8,962
DOYLESTOWN BORO WATER DEPT8,700
MUNICIPAL WATER AUTH ADAMS TWP8,700
DTMA MAIN SYSTEM8,655
AQUA PA GREENVILLE8,600
WARWICK TWP LITITZ SYS8,561
HOLLIDAYSBURG MUNI AUTH8,523
SALISBURY TWP WATER SYSTEM8,522
EBENSBURG BORO MUNI AUTH8,500
WYOMISSING BORO WATER SYSTEM8,500
NEW HOLLAND BOROUGH8,490
COLLEGEVILLE TRAPPE JOINT PWD8,470
N MIDDLETON WATER AUTH8,455
HOUTZDALE MUNICIPAL AUTHORITY8,410
WELLSBORO MUNICIPAL AUTHORITY8,225
BOYERTOWN MUNI AUTH8,000
KITTANNING SUBURB JT WATER AUT8,000
TAMAQUA AREA WATER AUTHORITY8,000
BRIGHTON TWP MUNI AUTH7,920
WERNERSVILLE MUNI WATER AUTH7,920
GROVE CITY BORO WATER DEPT7,871
CONEMAUGH TWP MUNI AUTH7,800
EDINBORO WATER AUTHORITY7,800
MUNICIPAL AUTHORITY OF CORRY7,800
CITY OF DUBOIS WATER DEPART7,794
EDGEWORTH BORO MUNI AUTH7,781
UPPER LEACOCK TOWNSHIP7,734
TELFORD BOROUGH AUTHORITY7,700
MAIDENCREEK TWP WATER AUTH7,505
LITTLESTOWN BORO7,300
UPPER SAUCON TWP WATER SUPPLY7,300
MINERSVILLE MUNICIPAL WATER AU7,275
BLYTHE TWP MUNICIPAL AUTHORITY7,100
WOMELSDORF ROBESONIA JT AUTH7,070
INDIAN CREEK VALLEY WATER AUTH7,000
RICHLAND TWP WATER AUTHORITY6,800
SEWICKLEY BORO WATER AUTH6,800
NEVILLE TWP WATER DEPT6,750
MANOR TWP JT MUNI AUTH6,744
EAST COCALICO TOWNSHIP AUTH6,735
MANHEIM AREA WATER & SEWER AUT6,701
HARMONY BORO WATER AUTH6,669
JERSEY SHORE AREA JNT WAT AUTH6,600
CATASAUQUA MUN WATER WORKS6,598
DERRY BORO MUNI AUTH6,500
MONACA BORO WATER DEPT6,500
PORTAGE BORO MUNI AUTH6,500
TYRONE BORO WATER AUTH6,500
PA AMERICAN WATER STEELTON6,428
KENNETT SQUARE MUN WATER WORKS6,328
SOMERSET BORO MUNI WATER AUTH6,309
BROOKVILLE MUNICIPAL AUTH6,220
EAST PETERSBURG BOROUGH6,215
TITUSVILLE MUNICIPAL WATER6,146
WASHINGTON TWP MUNI AUTH6,134
BELLE VERNON BORO MUNI AUTH6,000
COLLEGE TWP WATER AUTHORITY6,000
SCHUYLKILL HAVEN BORO WATER6,000
BUFFALO TWP MUN AUTH FREEPORT5,849
NORTH EAST TOWNSHIP WATER5,848
ALBION BOROUGH5,842
CORAOPOLIS WATER & SEWER AUTH5,804
MT UNION MUNICIPAL AUTH5,801
HELLERTOWN BOROUGH AUTHORITY5,800
BEAVER BORO MUNI AUTH5,799
HILLTOWN TWP WATER&SEWER AUTH5,770
LOWER SAUCON AUTHORITY5,700
MAHANOY TWP AUTH5,584
SELINSGROVE MUNI AUTH5,584
DUQUESNE WATER DEPT5,565
GREENCASTLE AREA WATER AUTH5,500
BIRDSBORO MUNI WATER AUTH5,353
TUNKHANNOCK BORO MUNIC AUTH5,349
OXFORD BOROUGH5,280
STEWARTSTOWN BORO WATER AUTH5,206
SCHWENKSVILLE BOROUGH AUTH5,200
MUN AUTH OF BORO OF BEDFORD5,127
SHARPSVILLE BORO WATER CO5,029
TOWANDA MUNICIPAL AUTHORITY5,000
DANVILLE MUNICIPAL WATER AUTH4,992
HAMBURG MUNI WATER&SEWER AUTH4,990
MONTOURSVILLE WATER COMPANY4,983
TARENTUM BORO WATER DEPT4,927
CENTRAL INDIANA CO WATER AUTH4,920
LONDON GROVE TWP MUN AUTH4,770
BUCKINGHAM TWP COLD SPRING4,760
SHREWSBURY BOROUGH4,727
RIDGWAY BOROUGH WATER SYSTEM4,700
FAWN FRAZER JT WATER AUTH4,650
FREELAND BORO MUNI WATER AUTH4,610
NORTH EAST BOROUGH WATER DEPT4,601
MILLERSBURG WATER AUTH4,600
UPPER HANOVER WATER AUTHORITY4,600
NORTH SEWICKLEY MUN WATER AUTH4,578
FAIRVIEW TWP WATER DISTRICT 14,500
NEW WILMINGTON BORO WATER DEPT4,500
NORTHERN CAMBRIA MUNI WATER4,500
PIKE TWP MUNICIPAL AUTHORITY4,500
SENECA & CRANBERRY MALL DIST4,500
MILFORD TWP WATER AUTHORITY4,497
NEW FREEDOM BORO WATER AUTH4,464
MIFFLINTOWN MUNI AUTH4,450
SLATINGTON BOROUGH WATER SYS4,450
FRANKLIN SYSTEM YORK WATER4,400
SOUTHWESTERN CAMBRIA CNTY AUTH4,400
BROCKWAY BORO MUNICIPAL AUTH4,384
WEST EARL WATER AUTHORITY4,327
WEST READING BORO WATER4,300
UNION CITY MUNICIPAL AUTHORITY4,295
NEW SEWICKLEY TWP MUNI AUTH4,276
CAERNARVON TWP AUTH4,245
JACKSON TWP WATER AUTH4,236
FLEETWOOD BORO WATER SYSTEM4,218
AKRON BOROUGH4,200
ASHLAND AREA WATER AUTHORITY4,200
PA AMERICAN DILLINER SYSTEM4,200
BUCKINGHAM TWP FURLONG4,150
ZELIENOPLE BORO4,123
MANSFIELD BOROUGH MUN AUTH4,100
WRIGHTSVILLE BORO MUNI AUTH4,076
EAST DONEGAL4,048
BLAIRSVILLE MUNI AUTH4,023
NEW OXFORD MUNCI AUTH3,963
BADEN BORO WATER DEPT3,948
HEGINS HUBLEY AUTHORITY3,870
DENVER BORO3,861
MASONTOWN MUNI WATER WORKS3,841
PETROLEUM VALLEY RWA3,800
SOMERSET TWP MUNI AUTH OAKRIDG3,800
TOBYHANNA ARMY DEPOT3,800
BRACKENRIDGE BORO WATER DEPT3,700
COOPER TWP MUNICIPAL AUTH3,700
MIFFLINBURG BORO WATER DEPT3,690
PLEASANT VALLEY WATER AUTH3,630
MIDDLESEX TWP MUNI AUTH3,527
STATE CORRECTIONAL INST3,500
MOUNTAINTOP REG WATER AUTH3,456
SPRINGDALE BORO WATER DEPT3,405
BOROUGH OF CORNWALL3,343
FAIRVIEW TWP WATER AUTH DIST 33,320
GIRARD BORO WATER DEPT3,301

Largest first by population served, as each employer reports it to its federal registry.

Source: U.S. Environmental Protection Agency, Safe Drinking Water Information System (SDWIS/Fed), community water systems. Data captured October 2, 2026.

Jobs at public water systems

Water / Wastewater Treatment Operator

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Public water systems in other states

Texas · 1,133California · 523Illinois · 408Alabama · 294Florida · 286Michigan · 284Tennessee · 276New York · 266Massachusetts · 254Ohio · 243Georgia · 242North Carolina · 237Washington · 211New Jersey · 205Missouri · 200Kentucky · 190Louisiana · 190Minnesota · 185Wisconsin · 185Indiana · 176Colorado · 167Arkansas · 157South Carolina · 143Oklahoma · 142Virginia · 142Utah · 116Iowa · 112Oregon · 111Mississippi · 107Kansas · 88West Virginia · 82Maryland · 69Arizona · 63New Mexico · 53Idaho · 43Nebraska · 43New Hampshire · 38Hawaii · 34Montana · 32Vermont · 32Maine · 31South Dakota · 31Connecticut · 30Nevada · 28Wyoming · 28Rhode Island · 26Delaware · 20North Dakota · 18Alaska · 16District of Columbia · 3

All public water systems in the U.S. · Pennsylvania government jobs