Pierce County · System ID 11887 · Community water system
Is Cedar Crest’s water safe? PFAS test results (Pierce County, WA)
PFAS above Washington’s state action level
Cedar Crest detected PFAS in 12 of its 14 tested water sources, with at least one result above Washington’s state action level (latest test June 2026).
Community water system serving Pierce County · 923 connections · about 2,954 people.
At least one individual sample measured at or above a federal MCL value (4 ng/L for PFOA/PFOS; 10 ng/L for PFHxS, PFNA, HFPO-DA). Compliance with the federal standard is judged on running annual averages at the tap — a single source sample at that level is a flag, not a violation.
PFAS results on record for Cedar Crest
| Analyte | Highest result | WA action level | Federal MCL | Detected at source |
|---|---|---|---|---|
| PFOS Perfluorooctanesulfonic acid | 18 ng/L above SAL | 15 ng/L | 4 ng/L | WELL #1 ABR139 CC |
| PFBS Perfluorobutanesulfonic acid | 10 ng/L | 345 ng/L | — | CO - WELL #1 AGN700, CO - WELL #3 BKY926, CO - WELLS 1,2,3 WF, DROHMAN WELL # 2 AKY420, H - WELL #1 AAE044, HUNT ROAD ENT AEA482, RM WELL # 2 AAB128, RM WELL #3 BJN298, SB - WELL 1 AEA492, SUNNY BRAE WELL # 2 AKY410, WELL #1 ABR139 CC, WELL #2 D AAE027 |
| PFOA Perfluorooctanoic acid | 8 ng/L | 10 ng/L | 4 ng/L | RM WELL # 2 AAB128, RM WELL #3 BJN298, WELL #1 ABR139 CC |
| PFHxA Perfluorohexanoic acid | 4 ng/L | — | — | RM WELL # 2 AAB128, RM WELL #3 BJN298, WELL #1 ABR139 CC |
| PFPeA Perfluoropentanoic acid | 4 ng/L | — | — | RM WELL # 2 AAB128, RM WELL #3 BJN298, WELL #1 ABR139 CC |
| PFHxS Perfluorohexanesulfonic acid | 3 ng/L | 65 ng/L | 10 ng/L | RM WELL # 2 AAB128, RM WELL #3 BJN298, WELL #1 ABR139 CC |
| PFHpA Perfluoroheptanoic acid | 2 ng/L | — | — | WELL #1 ABR139 CC |
What this means
A Washington state action level (SAL) is the concentration at which the state requires a water system to notify its customers and take action — typically treating the affected source, blending it, or taking it offline. PFAS was detected in 12 of the 14 sources tested for this system, and at least one result was above a SAL. Ask the utility what it has done with the affected sources since the sample date — the table above shows which sources were affected.
For PFAS at the drinking tap, the fix we plan to offer is under-sink reverse osmosis — manufacturer test data shows RO membranes reduce PFAS. See the planned systems.
These results describe the water system’s sources (wells, intakes), not any individual tap — utilities blend, treat, and rotate sources. Data: Washington State Department of Health public PFAS results and Drinking Water Service Areas, dataset updated 2026-07-22. Latest test on record for this system: 2026-06-17. Informational only — not a certification of water quality and not health advice. If you have concerns about your drinking water, contact your utility or the WA DOH Office of Drinking Water.
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