PFAS in Maryland Water
Based on EPA UCMR 5 testing of 30 public water systems in Maryland.
See Maryland on the national heatmap30
Systems Tested
30
With PFAS Detected
16
Above EPA Limits
53%
Exceed MCL
Most Commonly Detected PFAS in Maryland
Systems with detections · EPA UCMR 5 (2023–2025)
PFPeA 25 systems
PFHxA 20 systems
PFBS 18 systems
PFOA 15 systems
PFBA 15 systems
PFHxS 14 systems
Check your Maryland ZIP code
Get specific results for your neighborhood's water utility.
Water Systems in Maryland (30)
Click any row to see ZIP-level details| Water System | PWSID | PFAS Detected | Above MCL | Risk |
|---|---|---|---|---|
| MARYLAND AMERICAN WATER COMPANY Groundwater | MD0120003 | 9 | 2 | High Risk |
| TOWN OF HAMPSTEAD Groundwater | MD0060003 | 8 | 2 | High Risk |
| CITY OF WESTMINSTER, MD GU | MD0060015 | 8 | 2 | High Risk |
| TOWN OF ELKTON Groundwater | MD0070011 | 8 | 2 | High Risk |
| TOWN OF MIDDLETOWN Groundwater | MD0100018 | 8 | 2 | High Risk |
| CITY OF ABERDEEN Surface Water | MD0120001 | 8 | 2 | High Risk |
| TOWN OF POOLESVILLE Groundwater | MD0150002 | 8 | 2 | High Risk |
| TOWN OF MOUNT AIRY Groundwater | MD0060007 | 7 | 2 | High Risk |
| NEW LIFE CHRISTIAN SCHOOL Groundwater | MD1100052 | 7 | 2 | High Risk |
| CITY OF TANEYTOWN Groundwater | MD0060012 | 6 | 2 | High Risk |
| CITY OF SALISBURY Groundwater | MD0220004 | 6 | 2 | High Risk |
| TOWN OF THURMONT Groundwater | MD0100023 | 4 | 2 | High Risk |
| GLENELG COUNTRY SCHOOL Groundwater | MD1130003 | 7 | 1 | High Risk |
| TOWN OF MANCHESTER Groundwater | MD0060006 | 6 | 1 | High Risk |
| BOONSBORO - KEEDYSVILLE Groundwater | MD0210002 | 5 | 1 | High Risk |
| CITY OF FRUITLAND Groundwater | MD0220008 | 2 | 1 | High Risk |
| CITY OF ROCKVILLE Surface Water | MD0150003 | 4 | 0 | Low Level |
| TOWN OF BERLIN Groundwater | MD0230001 | 4 | 0 | Low Level |
| WALDORF - CHARLES COUNTY DPW Surface Water | MD0080049 | 3 | 0 | Low Level |
| FREEDOM DISTRICT Surface Water | MD0060002 | 2 | 0 | Low Level |
| HOWARD COUNTY D.P.W. DISTRIBUTION Surface Water | MD0130002 | 2 | 0 | Low Level |
| WASHINGTON SUBURBAN SANITARY COMMISSION Surface Water | MD0150005 | 2 | 0 | Low Level |
| OCEAN PINES Groundwater | MD0230005 | 2 | 0 | Low Level |
| TOWN OF NORTH EAST Surface Water | MD0070016 | 1 | 0 | Low Level |
| FORT DETRICK Surface Water | MD0100011 | 1 | 0 | Low Level |
| CITY OF FREDERICK Surface Water | MD0100015 | 1 | 0 | Low Level |
| NEW DESIGN - FREDERICK COUNTY Surface Water | MD0100030 | 1 | 0 | Low Level |
| CITY OF BALTIMORE Surface Water | MD0300002 | 1 | 0 | Low Level |
| MANOR SHOPPING CENTER Surface Water | MD1030054 | 1 | 0 | Low Level |
| MGM NATIONAL HARBOR Surface Water | MD1160049 | 1 | 0 | Low Level |