PFAS in Ohio Water
Based on EPA UCMR 5 testing of 141 public water systems in Ohio.
See Ohio on the national heatmap141
Systems Tested
141
With PFAS Detected
59
Above EPA Limits
42%
Exceed MCL
Most Commonly Detected PFAS in Ohio
Systems with detections · EPA UCMR 5 (2023–2025)
PFBA 66 systems
PFPeA 55 systems
PFBS 55 systems
PFHxA 43 systems
PFOA 36 systems
PFOS 32 systems
Check your Ohio ZIP code
Get specific results for your neighborhood's water utility.
Water Systems in Ohio (141)
Click any row to see ZIP-level details| Water System | PWSID | PFAS Detected | Above MCL | Risk |
|---|---|---|---|---|
| WRIGHT-PATTERSON AFB AREA B PWS Groundwater | OH2903312 | 5 | 3 | High Risk |
| MILFORD CITY PWS Groundwater | OH1301012 | 7 | 2 | High Risk |
| WRIGHT-PATTERSON AFB AREA A PWS Groundwater | OH2903412 | 7 | 2 | High Risk |
| NEWTON FALLS CITY Surface Water | OH7802311 | 7 | 2 | High Risk |
| SHADYSIDE PUBLIC WATER SYSTEM Groundwater | OH0701612 | 6 | 2 | High Risk |
| TRUMBULL CO.-HOWLAND TWP PWS Surface Water | OH7806303 | 6 | 2 | High Risk |
| MONTGOMERY COUNTY WATER SERVICES 1 PWS GU | OH5701315 | 5 | 2 | High Risk |
| GRANDVIEW MEDICAL CENTER PWS GU | OH5750615 | 5 | 2 | High Risk |
| GIRARD CITY PWS Surface Water | OH7801103 | 5 | 2 | High Risk |
| CANFIELD CITY PWS Surface Water | OH5000503 | 4 | 2 | High Risk |
| DAYTON VA BLDG 410 GU | OH5750618 | 4 | 2 | High Risk |
| MCDONALD VILLAGE PWS Surface Water | OH7802003 | 4 | 2 | High Risk |
| SPRINGBORO PWS Groundwater | OH8301412 | 4 | 2 | High Risk |
| MARIETTA CITY PWS Groundwater | OH8400412 | 3 | 2 | High Risk |
| WILMINGTON CITY PWS Surface Water | OH1401211 | 6 | 1 | High Risk |
| SANITARY DISTRICT #4 Surface Water | OH2501003 | 6 | 1 | High Risk |
| COLUMBUS PUBLIC WATER SYSTEM Groundwater | OH2504412 | 6 | 1 | High Risk |
| TRUMBULL CO.-SOUTHEAST PWS Surface Water | OH7803203 | 6 | 1 | High Risk |
| WOOSTER CITY PWS Groundwater | OH8504512 | 6 | 1 | High Risk |
| DEL-CO WATER COMPANY, INC. Surface Water | OH2101412 | 5 | 1 | High Risk |
| BEXLEY CITY PWS Surface Water | OH2500103 | 5 | 1 | High Risk |
| INDIAN HILL CITY PWS Groundwater | OH3101112 | 5 | 1 | High Risk |
| HECLA WATER ASSOCIATION-PLANT PWS Surface Water | OH4401612 | 5 | 1 | High Risk |
| MONTGOMERY COUNTY WATER SERVICES 2 PWS GU | OH5701503 | 5 | 1 | High Risk |
| UNION CITY PWS Groundwater | OH5702512 | 5 | 1 | High Risk |
| DAYTON PUBLIC WATER SYSTEM GU | OH5703512 | 5 | 1 | High Risk |
| KINGS ISLAND PWS Groundwater | OH8345615 | 5 | 1 | High Risk |
| IRONTON PWS Surface Water | OH4400711 | 4 | 1 | High Risk |
| LORDSTOWN VILLAGE PWS Surface Water | OH7804403 | 4 | 1 | High Risk |
| HAMILTON PUBLIC WATER SYSTEM Groundwater | OH0904012 | 3 | 1 | High Risk |
| CLERMONT PUBLIC WATER SYSTEM Groundwater | OH1302212 | 3 | 1 | High Risk |
| BELLBROOK WATER WORKS Groundwater | OH2901112 | 3 | 1 | High Risk |
| CINCINNATI PUBLIC WATER SYSTEM Groundwater | OH3102612 | 3 | 1 | High Risk |
| JACKSON/MILTON METRO WATER DISTRICT PWS Surface Water | OH5054212 | 3 | 1 | High Risk |
| NILES CITY PWS Surface Water | OH7802403 | 3 | 1 | High Risk |
| MARTINS FERRY PUBLIC WATER SYSTEM Groundwater | OH0701212 | 2 | 1 | High Risk |
| LOVELAND CITY PWS Groundwater | OH1300812 | 2 | 1 | High Risk |
| GREENVILLE CITY PWS MX | OH1900714 | 2 | 1 | High Risk |
| CAMBRIDGE, CITY OF Surface Water | OH3000111 | 2 | 1 | High Risk |
| YOUNGSTOWN CITY PWS Surface Water | OH5002303 | 2 | 1 | High Risk |
| PORTSMOUTH PUBLIC WATER SYSTEM Surface Water | OH7300111 | 2 | 1 | High Risk |
| AKRON CITY PWS Surface Water | OH7700011 | 2 | 1 | High Risk |
| PUTNAM COMMUNITY WATER ASSOCIATION PWS Groundwater | OH8400712 | 2 | 1 | High Risk |
| WARREN COMM W AND S ASSN 2 Groundwater | OH8402703 | 2 | 1 | High Risk |
| BARNESVILLE, OH Surface Water | OH0700011 | 1 | 1 | High Risk |
| ST. CLAIRSVILLE, CITY OF PWS Surface Water | OH0701516 | 1 | 1 | High Risk |
| GEORGETOWN VILLAGE PWS Groundwater | OH0800503 | 1 | 1 | High Risk |
| MIDDLETOWN CITY PWS Groundwater | OH0901712 | 1 | 1 | High Risk |
| BETHEL VILLAGE PWS Groundwater | OH1300116 | 1 | 1 | High Risk |
| TATE-MONROE WATER ASSOCIATION PWS Groundwater | OH1301312 | 1 | 1 | High Risk |
| GALLIA CO RURAL WATER ASSOCIATION Groundwater | OH2700012 | 1 | 1 | High Risk |
| GALLIPOLIS PWS Groundwater | OH2700112 | 1 | 1 | High Risk |
| YELLOW SPRINGS VILLAGE PWS Groundwater | OH2903012 | 1 | 1 | High Risk |
| GUERNSEY CO. WATER DEPT. Surface Water | OH3000603 | 1 | 1 | High Risk |
| AQUA OHIO - LAWRENCE COUNTY Surface Water | OH4400803 | 1 | 1 | High Risk |
| LEADING CREEK CONSERVANCY DISTRICT Groundwater | OH5300012 | 1 | 1 | High Risk |
| CALDWELL VILLAGE PWS Surface Water | OH6100011 | 1 | 1 | High Risk |
| FRANKLIN PUBLIC WATER SYSTEM Groundwater | OH8300412 | 1 | 1 | High Risk |
| WESTERN WATER COMPANY Groundwater | OH8300512 | 1 | 1 | High Risk |
| WAUSEON CITY Surface Water | OH2600111 | 5 | 0 | Moderate |
| BLUFFTON VILLAGE Surface Water | OH0200112 | 4 | 0 | Low Level |
| FAIRFIELD CITY PWS Groundwater | OH0900715 | 4 | 0 | Low Level |
| OBERLIN WATER DEPARTMENT Surface Water | OH4700911 | 4 | 0 | Low Level |
| OAKWOOD CITY PWS Groundwater | OH5701915 | 4 | 0 | Low Level |
| OTTAWA VILLAGE Surface Water | OH6900711 | 4 | 0 | Low Level |
| BOWLING GREEN CITY Surface Water | OH8700311 | 4 | 0 | Low Level |
| ELIDA VILLAGE Surface Water | OH0200503 | 3 | 0 | Low Level |
| LIMA CITY Surface Water | OH0200811 | 3 | 0 | Low Level |
| DEFIANCE CITY Surface Water | OH2000111 | 3 | 0 | Low Level |
| NAPOLEON CITY Surface Water | OH3500811 | 3 | 0 | Low Level |
| WELLSTON CITY PWS Surface Water | OH4001912 | 3 | 0 | Low Level |
| WATERVILLE CITY Surface Water | OH4801503 | 3 | 0 | Low Level |
| JEFFERSON REGIONAL WATER AUTHORITY Groundwater | OH5703012 | 3 | 0 | Low Level |
| OTTAWA COUNTY REGIONAL WATER DISTRICT Surface Water | OH6205011 | 3 | 0 | Low Level |
| NORTHWESTERN W AND SD- PORTAGE Surface Water | OH8704103 | 3 | 0 | Low Level |
| BUTLER CO. WATER DISTRICT 2 PWS Groundwater | OH0900303 | 2 | 0 | Low Level |
| TRENTON CITY PWS Groundwater | OH0903012 | 2 | 0 | Low Level |
| CINCINNATI CHILDRENS HOSP IONIZATION SYS Surface Water | OH3139912 | 2 | 0 | Low Level |
| TORONTO PWS Surface Water | OH4102811 | 2 | 0 | Low Level |
| SOUTH POINT VILLAGE Groundwater | OH4401212 | 2 | 0 | Low Level |
| RURAL LORAIN CO. WATER A Surface Water | OH4701803 | 2 | 0 | Low Level |
| ZANESVILLE PWS Groundwater | OH6002712 | 2 | 0 | Low Level |
| WAVERLY CITY PWS Groundwater | OH6600912 | 2 | 0 | Low Level |
| AQUA OHIO - MASSILLON PWS Groundwater | OH7604512 | 2 | 0 | Low Level |
| BELPRE CITY PWS Groundwater | OH8400012 | 2 | 0 | Low Level |
| BELLAIRE PUBLIC WATER SYSTEM MX | OH0700114 | 1 | 0 | Low Level |
| MOUNT ORAB VILLAGE PWS Surface Water | OH0801011 | 1 | 0 | Low Level |
| OXFORD CITY PWS Groundwater | OH0902312 | 1 | 0 | Low Level |
| SOUTHWEST REGIONAL WATER DISTRICT Groundwater | OH0903912 | 1 | 0 | Low Level |
| URBANA CITY PWS Groundwater | OH1101212 | 1 | 0 | Low Level |
| NEW CARLISLE CITY PWS Groundwater | OH1203312 | 1 | 0 | Low Level |
| BLANCHESTER VILLAGE PWS Surface Water | OH1400111 | 1 | 0 | Low Level |
| EAST LIVERPOOL CITY Surface Water | OH1500811 | 1 | 0 | Low Level |
| GALION CITY Surface Water | OH1700211 | 1 | 0 | Low Level |
| UNIVERSITY HOSPITALS - MAIN CAMPUS Surface Water | OH1841113 | 1 | 0 | Low Level |
| REYNOLDSBURG CITY PWS Surface Water | OH2503203 | 1 | 0 | Low Level |
| WESTERVILLE CITY PWS MX | OH2503411 | 1 | 0 | Low Level |
| DELTA VILLAGE Surface Water | OH2600311 | 1 | 0 | Low Level |
| READING CITY PWS Surface Water | OH3101812 | 1 | 0 | Low Level |
| BELLEVUE CITY Surface Water | OH3900011 | 1 | 0 | Low Level |
| NORWALK CITY Surface Water | OH3901111 | 1 | 0 | Low Level |
| NORW - SOUTH DISTRICT Surface Water | OH3946712 | 1 | 0 | Low Level |
| JACKSON, CITY OF Surface Water | OH4000111 | 1 | 0 | Low Level |
| JEFFERSON CO W AND S DISTRICT- A Groundwater | OH4100803 | 1 | 0 | Low Level |
| JEFFERSON CO W AND S DISTRICT - M Surface Water | OH4101103 | 1 | 0 | Low Level |
| NEWARK CITY PWS Surface Water | OH4502314 | 1 | 0 | Low Level |
| BELLEFONTAINE CITY PWS Groundwater | OH4600112 | 1 | 0 | Low Level |
| OREGON CITY, OH Surface Water | OH4800911 | 1 | 0 | Low Level |
| TOLEDO, CITY OF Surface Water | OH4801411 | 1 | 0 | Low Level |
| WHITEHOUSE VILLAGE Surface Water | OH4801612 | 1 | 0 | Low Level |
| AQUA OHIO - STRUTHERS Surface Water | OH5001611 | 1 | 0 | Low Level |
| MEDINA CITY PWS Surface Water | OH5200514 | 1 | 0 | Low Level |
| MEDINA CO/NORTHWEST PWS Surface Water | OH5201903 | 1 | 0 | Low Level |
| CELINA CITY Surface Water | OH5400011 | 1 | 0 | Low Level |
| PIQUA CITY PWS Surface Water | OH5501211 | 1 | 0 | Low Level |
| BROOKVILLE MUNICIPALITY PWS GU | OH5700203 | 1 | 0 | Low Level |
| TROTWOOD CITY PWS GU | OH5702403 | 1 | 0 | Low Level |
| MUSKINGUM COUNTY WATER - SE Groundwater | OH6000412 | 1 | 0 | Low Level |
| MAYSVILLE REGIONAL WATER Surface Water | OH6001411 | 1 | 0 | Low Level |
| PAULDING VILLAGE Surface Water | OH6300411 | 1 | 0 | Low Level |
| COMMERCIAL POINT VILLAGE Groundwater | OH6503512 | 1 | 0 | Low Level |
| PIKE WATER, INC.-PLANT PWS Groundwater | OH6602412 | 1 | 0 | Low Level |
| RAVENNA CITY PWS Surface Water | OH6703211 | 1 | 0 | Low Level |
| SHELBY CITY Surface Water | OH7004511 | 1 | 0 | Low Level |
| CHILLICOTHE CITY PWS Groundwater | OH7100112 | 1 | 0 | Low Level |
| ROSS COUNTY WATER CO INC PWS Groundwater | OH7101412 | 1 | 0 | Low Level |
| CLYDE CITY Surface Water | OH7200211 | 1 | 0 | Low Level |
| NORTHWEST REGIONAL WATER DISTRICT Groundwater | OH7300003 | 1 | 0 | Low Level |
| SCIOTO CO. REGIONAL WATER DISTRICT #1 Groundwater | OH7300212 | 1 | 0 | Low Level |
| SCIOTO WATER, INC.-SUGAR CAMP Groundwater | OH7300903 | 1 | 0 | Low Level |
| ALLIANCE CITY PWS Surface Water | OH7600011 | 1 | 0 | Low Level |
| LOUISVILLE CITY PWS Groundwater | OH7603012 | 1 | 0 | Low Level |
| HUBBARD CITY PWS Surface Water | OH7801415 | 1 | 0 | Low Level |
| AQUA OHIO - MASURY Surface Water | OH7802711 | 1 | 0 | Low Level |
| WARREN CITY PWS Surface Water | OH7803811 | 1 | 0 | Low Level |
| TRUMBULL CO. - BAZETTA/CHAMPION Surface Water | OH7804303 | 1 | 0 | Low Level |
| LEBANON CITY Surface Water | OH8304112 | 1 | 0 | Low Level |
| WARREN CO. SOCIALVILLE PWS Surface Water | OH8304203 | 1 | 0 | Low Level |
| WATERFORD WATER/SEWER ASSOCIATION Groundwater | OH8401112 | 1 | 0 | Low Level |
| NORTH BALTIMORE VILLAGE Surface Water | OH8701611 | 1 | 0 | Low Level |
| NORTHWESTERN W AND SD - WTLN 200 Surface Water | OH8704203 | 1 | 0 | Low Level |