PFAS in Washington Water
Based on EPA UCMR 5 testing of 98 public water systems in Washington.
See Washington on the national heatmap98
Systems Tested
98
With PFAS Detected
34
Above EPA Limits
35%
Exceed MCL
Most Commonly Detected PFAS in Washington
Systems with detections · EPA UCMR 5 (2023–2025)
PFBS 50 systems
lithium 41 systems
PFPeA 35 systems
PFHxA 31 systems
PFOS 30 systems
PFHxS 25 systems
Check your Washington ZIP code
Get specific results for your neighborhood's water utility.
Water Systems in Washington (98)
| Water System ↕ | PWSID | PFAS Detected ↕ | Above MCL ↕ | Risk |
|---|---|---|---|---|
| ARTONDALE WATER SYSTEM Groundwater | WA5303160 | 8 | 3 | High Risk |
| KENNEWICK CITY OF GU | WA5338100 | 7 | 3 | High Risk |
| RICHLAND CITY OF Groundwater | WA5372250 | 8 | 2 | High Risk |
| BENTON CITY WATER Groundwater | WA5305800 | 7 | 2 | High Risk |
| QUISTORFF Groundwater | WA5370550 | 7 | 2 | High Risk |
| VANCOUVER CITY OF Groundwater | WA5391200 | 7 | 2 | High Risk |
| SAMMAMISH PLATEAU WATER & SEWER Groundwater | WA5340900 | 6 | 2 | High Risk |
| MOSES LAKE CITY OF Groundwater | WA5356300 | 6 | 2 | High Risk |
| PARKLAND LIGHT & WATER COMPANY Groundwater | WA5366200 | 6 | 2 | High Risk |
| SOUTHWOOD WATER SYSTEM Groundwater | WA5382844 | 6 | 2 | High Risk |
| SPANAWAY WATER COMPANY Groundwater | WA5382850 | 6 | 2 | High Risk |
| CLARK PUBLIC UTILITIES Groundwater | WA5313333 | 5 | 2 | High Risk |
| FAIRCHILD AIR FORCE BASE Groundwater | WA5324350 | 5 | 2 | High Risk |
| JBLM Lewis Groundwater | WA5326050 | 5 | 2 | High Risk |
| OLYMPIA CITY OF Groundwater | WA5363450 | 5 | 2 | High Risk |
| TRENTWOOD IRRIGATION DISTRICT 3 Groundwater | WA5389250 | 5 | 2 | High Risk |
| CAMAS MUNICIPAL WATER SEWER SYSTEM Groundwater | WA5310800 | 3 | 2 | High Risk |
| FIRGROVE MUTUAL INC Groundwater | WA5325200 | 3 | 2 | High Risk |
| COUPEVILLE TOWN OF Groundwater | WA5315550 | 7 | 1 | High Risk |
| PEACOCK HILL Groundwater | WA5366637 | 7 | 1 | High Risk |
| LAKEHAVEN WATER AND SEWER DISTRICT Groundwater | WA5341997 | 6 | 1 | High Risk |
| COVINGTON WATER DISTRICT Groundwater | WA5341650 | 5 | 1 | High Risk |
| LAKEWOOD WATER DISTRICT Groundwater | WA5345550 | 5 | 1 | High Risk |
| MODEL IRRIGATION DIST #18 Groundwater | WA5355550 | 5 | 1 | High Risk |
| West Sound Utility District #1 Groundwater | WA5302600 | 4 | 1 | High Risk |
| SPOKANE CITY OF Groundwater | WA5383100 | 4 | 1 | High Risk |
| WHITWORTH WATER DISTRICT 2 Groundwater | WA5396601 | 4 | 1 | High Risk |
| DEER PARK CITY OF Groundwater | WA5318500 | 3 | 1 | High Risk |
| JBLM McChord Field Groundwater | WA5352200 | 3 | 1 | High Risk |
| MEDICAL LAKE CITY OF Groundwater | WA5353400 | 3 | 1 | High Risk |
| REDMOND WATER SYSTEM CITY OF Surface Water | WA5371650 | 3 | 1 | High Risk |
| WASHOUGAL CITY OF Groundwater | WA5393400 | 3 | 1 | High Risk |
| CENTRALIA PUBLIC WORKS - WATER Groundwater | WA5312200 | 2 | 1 | High Risk |
| EAST SPOKANE WATER DIST 1 Groundwater | WA5321650 | 1 | 1 | High Risk |
| AIRWAY HEIGHTS CITY OF Groundwater | WA5300650 | 4 | 0 | Low Level |
| FRUITLAND MUTUAL WATER COMPANY Groundwater | WA5326800 | 4 | 0 | Low Level |
| LACEY WATER DEPARTMENT Groundwater | WA5343500 | 4 | 0 | Low Level |
| MILTON CITY OF Groundwater | WA5354950 | 4 | 0 | Low Level |
| CROSS VALLEY WATER DISTRICT Groundwater | WA5316270 | 3 | 0 | Low Level |
| MINTERBROOK Groundwater | WA5354740 | 3 | 0 | Low Level |
| STEVENS CO PUD - SUNCREST Groundwater | WA5385202 | 3 | 0 | Low Level |
| LAKE CUSHMAN SYSTEM 5 Groundwater | WA5303529 | 2 | 0 | Low Level |
| OMAK CITY OF Groundwater | WA5363750 | 2 | 0 | Low Level |
| TACOMA WATER DIVISION CITY OF Groundwater | WA5386800 | 2 | 0 | Low Level |
| HI VALLEY VIEW Groundwater | WA5300431 | 1 | 0 | Low Level |
| ARLINGTON WATER DEPT Groundwater | WA5302950 | 1 | 0 | Low Level |
| Auburn City of Groundwater | WA5303350 | 1 | 0 | Low Level |
| QUIMPER Groundwater | WA5305783 | 1 | 0 | Low Level |
| YAK CO - TERRACE HEIGHTS Groundwater | WA5306029 | 1 | 0 | Low Level |
| BONNEY LAKE WATER DEPARTMENT CITY Groundwater | WA5307650 | 1 | 0 | Low Level |
| BREMERTON CITY OF Groundwater | WA5308200 | 1 | 0 | Low Level |
| CHENEY CITY OF Groundwater | WA5312400 | 1 | 0 | Low Level |
| COLFAX WATER DEPARTMENT CITY OF Groundwater | WA5314000 | 1 | 0 | Low Level |
| COLLEGE PLACE WATER DEPT Groundwater | WA5314050 | 1 | 0 | Low Level |
| CONNELL CITY OF Groundwater | WA5314600 | 1 | 0 | Low Level |
| CONSOLIDATED SUPPORT SERVICES Groundwater | WA5321850 | 1 | 0 | Low Level |
| EASTERN WASHINGTON UNIVERSITY Groundwater | WA5321900 | 1 | 0 | Low Level |
| EPHRATA WATER DEPARTMENT Groundwater | WA5323650 | 1 | 0 | Low Level |
| FIRCREST CITY OF Groundwater | WA5325150 | 1 | 0 | Low Level |
| GOLDENDALE CITY OF Groundwater | WA5328450 | 1 | 0 | Low Level |
| GRANDVIEW CITY OF Groundwater | WA5328970 | 1 | 0 | Low Level |
| GRANGER WATER DEPARTMENT Groundwater | WA5329000 | 1 | 0 | Low Level |
| HARRINGTON CITY OF Groundwater | WA5331450 | 1 | 0 | Low Level |
| HORIZONS WEST Groundwater | WA5334375 | 1 | 0 | Low Level |
| IRVIN WATER DISTRICT #6 Groundwater | WA5336050 | 1 | 0 | Low Level |
| KENT WATER DEPARTMENT Groundwater | WA5338150 | 1 | 0 | Low Level |
| CEDAR RIVER WATER & SEWER DISTRICT Surface Water | WA5341800 | 1 | 0 | Low Level |
| Lake Meridian Water District Groundwater | WA5341900 | 1 | 0 | Low Level |
| PORT ANGELES COMPOSITE Surface Water | WA5343296 | 1 | 0 | Low Level |
| LIBERTY LAKE SEWER & WATER DISTRICT Groundwater | WA5347150 | 1 | 0 | Low Level |
| Mattawa City of Groundwater | WA5352000 | 1 | 0 | Low Level |
| MOUNTAIN VIEW-EDGEWOOD WATER CO Groundwater | WA5356820 | 1 | 0 | Low Level |
| MOXEE WATER DEPARTMENT Groundwater | WA5357300 | 1 | 0 | Low Level |
| NOB HILL WATER ASSOCIATION Groundwater | WA5359700 | 1 | 0 | Low Level |
| Northwest Water Assoc. Inc. Groundwater | WA5362000 | 1 | 0 | Low Level |
| NORTH BEACH WATER Groundwater | WA5363000 | 1 | 0 | Low Level |
| OTHELLO WATER DEPARTMENT Groundwater | WA5364850 | 1 | 0 | Low Level |
| PARKVIEW TERRACE Groundwater | WA5366215 | 1 | 0 | Low Level |
| PROSSER CITY OF Groundwater | WA5369750 | 1 | 0 | Low Level |
| PULLMAN WATER DEPARTMENT CITY OF Groundwater | WA5369880 | 1 | 0 | Low Level |
| PUYALLUP CITY OF Groundwater | WA5370050 | 1 | 0 | Low Level |
| RENTON CITY OF Groundwater | WA5371850 | 1 | 0 | Low Level |
| SELAH CITY OF Groundwater | WA5377400 | 1 | 0 | Low Level |
| SEQUIM CITY OF Groundwater | WA5377620 | 1 | 0 | Low Level |
| SKAGIT COUNTY PUD 1 JUDY RES Surface Water | WA5379500 | 1 | 0 | Low Level |
| SUMMIT WATER & SUPPLY CO Groundwater | WA5385050 | 1 | 0 | Low Level |
| SUNNYSIDE CITY OF Groundwater | WA5385400 | 1 | 0 | Low Level |
| TOPPENISH WATER DEPARTMENT Groundwater | WA5388850 | 1 | 0 | Low Level |
| TUMWATER CITY OF Groundwater | WA5389700 | 1 | 0 | Low Level |
| UNION GAP WATER Groundwater | WA5390250 | 1 | 0 | Low Level |
| WAPATO WATERWORKS Groundwater | WA5392800 | 1 | 0 | Low Level |
| WARDEN CITY OF Groundwater | WA5392850 | 1 | 0 | Low Level |
| WASHINGTON STATE UNIVERSITY Groundwater | WA5393200 | 1 | 0 | Low Level |
| PUD #1 OF ASOTIN COUNTY Groundwater | WA5393343 | 1 | 0 | Low Level |
| SPO CO WATER DIST 3 SYS 2 Groundwater | WA5393351 | 1 | 0 | Low Level |
| WEST RICHLAND CITY OF Groundwater | WA5394900 | 1 | 0 | Low Level |
| WESTPORT WATER DEPARTMENT Groundwater | WA5395300 | 1 | 0 | Low Level |
| WOODLAND CITY OF Surface Water | WA5398200 | 1 | 0 | Low Level |
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