Washington laboratory directory
State-certified laboratory
Chehalis Tribal Water Quality Laboratory
420 Howanut Road, Oakville, WA, 98568
Services listed in the certification record
Certified for: Drinking water
Address420 Howanut Road, Oakville, WA, 98568
Phone(360) 709-1859
Certification statuscertified
Certifying stateWashington (WA)
Residential customersResidential service unknown — confirm with lab
Sample methodSample intake unknown — confirm with lab
Source listOfficial state source
How to use a water testing lab
Contact the laboratory before collecting a sample. Ask whether it offers the test you need, request its current sampling instructions and containers, and confirm timing, pricing, and how to submit the sample.
Listing data fetched from the official source: 2026-09-02T14:05:33+00:00 · View listing data (JSON)
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