Watch Water Systems in Pennsylvania

257 community drinking-water systems in Pennsylvania currently rated Watch (MISI 21–40).

Systems in the Watch band (MISI 21–40) exhibit emerging stress indicators that warrant monitoring. One or more risk families may show moderate pressure — often early signs of capital deferral, revenue concentration, or demographic shifts affecting the customer base.

SystemPop. ServedMISIBand

QUEEN LANE WATER PLANT535K23.264Watch

BELMONT WATER TREATMENT PLANT320K23.264Watch

Erie220K39.480Watch

York207K30.591Watch

WEST VIEW BORO MUNI AUTH200K39.397Watch

WESTMD MUN AUTH-SWEENEY PLANT143K26.813Watch

WILKINSBURG-PENN JT WATER AUTH125K32.737Watch

Lancaster120K35.105Watch

Allentown118K31.862Watch

Bethlehem117K37.565Watch

PA AMERICAN WATER CO WEST105K33.228Watch

Altoona63K26.247Watch

HAMPTON SHALER WATER AUTHORITY62K29.256Watch

PAWC CEASETOWN58K24.157Watch

LEBANON WATER AUTH57K25.711Watch

PAWC NESBITT53K21.662Watch

PAWC WATRES52K24.659Watch

Williamsport51K28.857Watch

PA AMERICAN WATER COMPANY50K36.989Watch

Johnstown50K29.827Watch

BEAVER FALLS MUNI AUTH50K29.616Watch

MONROEVILLE MUNICIPAL AUTH49K38.931Watch

AQUA PA SHENANGO VALLEY WTP48K29.725Watch

UNITED WATER PA MECHANICSBURG45K32.479Watch

HCA ROAN FILTER PLANT45K32.875Watch

PA AMERICAN WATER CO BUTLER43K25.460Watch

AQUA PA ROARING CREEK DIVISION43K24.997Watch

CRANBERRY TWP WTP42K23.918Watch

HANOVER MUNI WATER WORKS41K33.992Watch

SOUTHWESTERN PA WATER AUTH40K35.656Watch

NORTHAMPTON BORO MUNI AUTH40K23.994Watch

OAKMONT BORO MUNI AUTH40K36.108Watch

MOON TWP MUNI AUTH38K36.457Watch

PENN STATE UNIV.37K24.248Watch

WARMINSTER MUNICIPAL AUTHORITY36K37.484Watch

AQUA PA UWCHLAN36K32.133Watch

NORTH FAYETTE CNTY MUNI AUTH35K38.020Watch

McKeesport33K28.203Watch

SCHUYLKILL CO MUN AUTH32K34.386Watch

CHAMBERSBURG BORO WATER SYS31K24.997Watch

PA AMERICAN WHITE DEER30K30.015Watch

BRODHEAD CREEK REG WATER AUTH30K26.247Watch

LATROBE MUNI AUTH30K28.913Watch

LEWISTOWN BORO MUNI AUTH29K23.642Watch

UNITED WATER PA BLOOMSBURG OP29K20.558Watch

GUILFORD WATER AUTH28K24.231Watch

PLUM BORO MUNI AUTH28K24.374Watch

AUTH OF BORO OF CHARLEROI27K20.790Watch

CARLISLE WATER TRMT PLT26K22.792Watch

COLUMBIA WATER CO25K31.657Watch

PAW GLEN ALSACE DIV25K33.627Watch

EPHRATA AREA JOINT AUTHORITY25K29.690Watch

PAW BLUE MOUNTAIN DIVISION24K21.662Watch

PA-AMERICAN WATER- UNIONTOWN23K36.889Watch

HIGHLAND S & W AUTH BEAVERDAM23K38.951Watch

PA AMERICAN WATER CO-INDIANA D22K30.759Watch

WARRINGTON TWP WATER&SEW DEPT22K39.708Watch

DOVER TWP WATER SYS21K35.992Watch

EAST HEMPFIELD WATER AUTH21K28.356Watch

ST MARYS AREA WATER AUTH20K30.538Watch

AMBRIDGE WATER AUTH20K35.288Watch

W ALLEGHENY CNTY MUNI AUTH19K28.116Watch

CENTER TWP WATER AUTH19K33.290Watch

MILLCREEK TWP WATER AUTH19K31.720Watch

ELIZABETHTOWN AREA WATER19K27.998Watch

BRADFORD CITY WATER AUTHORITY19K28.680Watch

FOX CHAPEL AUTH19K32.186Watch

PAWC POCONO DISTRICT18K30.857Watch

SHIPPENSBURG BORO WATER AUTH18K27.994Watch

PA AMER WATER CO ELLWOOD CTY17K22.999Watch

ROBINSON TWP MUNI AUTH16K32.654Watch

HIGHRIDGE WATER AUTH16K31.248Watch

UPPER SOUTHAMPTON MUN AUTH16K37.708Watch

RED LION16K26.689Watch

ALIQUIPPA MUNI WATER AUTH16K33.204Watch

AQUA PA SUSQUEHANNA DIVISION16K20.485Watch

PA AMERICAN WATER BERWICK15K23.110Watch

MT JOY BORO AUTH15K28.472Watch

PERKASIE REGIONAL AUTHORITY15K32.279Watch

CRESWELL HEIGHTS JT AUTH15K30.090Watch

WARWICK TWP WATER & SEWER AUTH15K30.735Watch

PA AMERICAN WATER CO WARREN15K20.101Watch

SWTA - MAIN SYSTEM15K34.045Watch

KUTZTOWN BOROUGH WATER14K39.292Watch

EMMAUS BOROUGH PUBLIC WATER14K37.042Watch

CLEARFIELD MUNICIPAL AUTH14K30.180Watch

HUNTINGDON BORO WATER DEPT14K29.856Watch

HARRISON TWP WATER AUTH13K27.657Watch

MORRISVILLE MUNIC AUTHORITY13K31.046Watch

SHILLINGTON MUNI AUTH13K34.747Watch

BORO OF WAYNESBORO13K27.228Watch

WHITEHALL TWP AUTHORITY13K39.518Watch

QUAKERTOWN BORO13K34.778Watch

BEAR VALLEY JOINT AUTH13K32.229Watch

PAWC BROWNELL13K22.859Watch

SUMMIT TOWNSHIP WATER AUTHORIT13K26.247Watch

GETTYSBURG MUNI AUTH12K32.995Watch

DALLASTOWN YOE WATER AUTH12K23.099Watch

SOUTH MIDDLETON TWP WATER AUTH12K28.915Watch

FINDLAY TWP MUNICIPAL AUTH11K23.994Watch

PA-AMERICAN WATER CO-CONNELLSV11K28.891Watch

MUNICIPAL AUTHORITY SUNBURY11K22.911Watch

RICHLAND TWP MUNI AUTH10K26.802Watch

TRI CNTY JT MUNI AUTH10K28.913Watch

CITY OF LOCK HAVEN WATER DEPT10K28.276Watch

WEST MANCHESTER TWP AUTH10K27.998Watch

PAWC CRYSTAL LAKE10K30.902Watch

SUBURBAN LOCK HAVEN WATER AUTH10K26.249Watch

ICMSA CROOKED CREEK10K29.073Watch

OIL CITY10K33.156Watch

MIDDLETOWN BORO WATER AUTH10K36.277Watch

SHENANDOAH MUN WATER AUTHORITY10K25.817Watch

BELLEFONTE BOROUGH WATER AUTH10K24.841Watch

MYERSTOWN WATER AUTH10K27.228Watch

WINDBER AREA AUTH9K33.481Watch

LANSFORD COALDALE JT WATER AUT9K38.673Watch

MUNI AUTH OF WASHINGTON TWP9K37.556Watch

GENERAL AUTHORITY OF FRANKLIN9K25.346Watch

LEHIGHTON WATER AUTHORITY9K30.679Watch

MUNICIPAL WATER AUTH ADAMS TWP9K20.790Watch

DOYLESTOWN BORO WATER DEPT9K32.778Watch

GREENVILLE MUNI WATER AUTH9K31.976Watch

WARWICK TWP LITITZ SYS9K33.716Watch

HOLLIDAYSBURG MUNI AUTH9K30.568Watch

SALISBURY TWP WATER SYSTEM9K26.409Watch

WYOMISSING BORO WATER SYS9K25.631Watch

EBENSBURG BORO MUNI AUTH9K30.278Watch

NEW HOLLAND BOROUGH8K32.689Watch

COLLEGEVILLE TRAPPE JOINT PWD8K38.255Watch

N MIDDLETON WATER AUTH8K31.248Watch

PA AMERICAN WATER PUNXSY8K20.567Watch

HEMLOCK FARMS (MAIN)8K29.451Watch

WELLSBORO MUNICIPAL AUTHORITY8K29.952Watch

AQUA PA SPRING RUN8K36.566Watch

TAMAQUA AREA WATER AUTHORITY8K27.994Watch

BOYERTOWN MUNI AUTH8K31.988Watch

MILLERSVILLE UNIV8K35.657Watch

WERNERSVILLE MUNI WATER AUTH8K35.988Watch

BRIGHTON TWP MUNI AUTH8K33.292Watch

GROVE CITY BORO WATER DEPT8K33.594Watch

PA-AMERICAN WATER-BROWNSVILLE8K33.892Watch

UNITED WATER BETHEL8K35.465Watch

Corry8K29.244Watch

EDINBORO WATER AUTHORITY8K29.910Watch

CITY OF DUBOIS WATER DEPART8K24.760Watch

EDGEWORTH BORO MUNI AUTH8K28.705Watch

UPPER LEACOCK TOWNSHIP8K35.260Watch

TELFORD BOROUGH AUTHORITY8K38.731Watch

UNITED WATER PA DALLAS8K33.113Watch

MAIDENCREEK TWP WATER AUTH8K28.087Watch

UPPER SAUCON TWP WATER SUPPLY7K36.519Watch

LITTLESTOWN BORO7K33.903Watch

MINERSVILLE MUNICIPAL WATER AU7K28.913Watch

BLYTHE TWP MUNICIPAL AUTHORITY7K28.913Watch

WOMELSDORF ROBESONIA JT AUTH7K39.556Watch

SAW CREEK DEVELOPMENT7K23.066Watch

PALMERTON MUNICIPAL AUTHORITY7K34.861Watch

SEWICKLEY BORO WATER AUTH7K35.988Watch

MANOR TWP JT MUNI AUTH7K31.035Watch

EAST COCALICO TOWNSHIP7K23.103Watch

KLINE TOWNSHIP MUN AUTHORITY7K36.723Watch

JERSEY SHORE AREA JNT WAT AUTH7K31.988Watch

CATASAUQUA MUN WATER WORKS7K26.709Watch

AQUA PA FAWN LAKE FOREST7K22.523Watch

MONACA BORO WATER DEPT7K35.545Watch

DERRY BORO MUNI AUTH7K31.248Watch

TYRONE BORO WATER AUTH7K34.717Watch

PORTAGE BORO MUNI AUTH7K34.613Watch

NEWBERRY SYS6K22.647Watch

STEELTON BORO WATER AUTH6K39.681Watch

KENNETT SQUARE MUN WATER WORKS6K38.652Watch

EAST PETERSBURG BOROUGH6K33.992Watch

TITUSVILLE MUNICIPAL WATER6K32.724Watch

WASHINGTON TWP MUNI AUTH6K24.707Watch

SCHUYLKILL HAVEN BORO WATER6K24.997Watch

COLLEGE TWP. WATER AUTHORITY6K33.836Watch

BELLE VERNON BORO MUNI AUTH6K35.942Watch

AQUA PA CHALFONT6K38.251Watch

BUFFALO TWP MUN AUTH FREEPORT6K32.918Watch

ALBION BOROUGH6K26.247Watch

CORAOPOLIS WATER & SEWER AUTH6K38.020Watch

MT UNION MUNICIPAL AUTH6K24.383Watch

HELLERTOWN BOROUGH AUTHORITY6K33.655Watch

PA AMERICAN WATER CO KANE6K25.296Watch

LOWER SAUCON AUTHORITY6K29.878Watch

MAHANOY TWP AUTH6K30.723Watch

SELINSGROVE MUN WATERWORKS6K20.455Watch

PA AM WATER CO-FRACKVILLE DIST6K20.822Watch

DUQUESNE WATER DEPT6K28.705Watch

GREENCASTLE AREA WATER AUTH6K24.997Watch

AQUA PA HONESDALE6K36.464Watch

BIRDSBORO MUNI WATER AUTH5K28.991Watch

OXFORD BOROUGH5K37.044Watch

STEWARTSTOWN BORO WATER AUTH5K37.467Watch

BEDFORD BORO WATER AUTH5K30.704Watch

AQUA PA FLYING HILLS WA SYS5K37.556Watch

SHARPSVILLE BORO WATER CO5K37.451Watch

TOWANDA MUNICIPAL AUTHORITY5K31.338Watch

DANVILLE MUNICIPAL WATER AUTH5K36.598Watch

HAMBURG MUNI WATER&SEWER AUTH5K23.110Watch