Water testing in Thurston County, WA

Lowest listed local program price: $32, Thurston County Environmental Health.

Well or city water

Thurston County Water Quality Lab Well Testing

$32

Bacteria
E. coli
Fecal coliform
Enterococci
Nitrate

Pick up a sample bottle at the Thurston County Public Health building in Olympia and drop it off at the front counter during posted lab hours.

Official page

Who can use it: Thurston County, Washington, with satellite drop-off sites in Mason County and south Thurston County (Yelm, Rainier, Tenino, Rochester)

Thurston County Public Health and Social Services Water Lab, 412 Lilly Road NE, Olympia · (360) 867-2631

Checked October 1, 2026. Report a change

See statewide tests and certified-lab lists for Washington.

What your results mean