- EPA's UCMR 5 testing looked for 30 contaminants here and found none.
Public EPA test results
Can you drink Woodinville tap water? What EPA records show
EPA WA5341600 · serves King County, WA · about 66,699 people (EPA SDWIS)
This report shows EPA's federal records for this water system: UCMR 5 testing, lead testing and violations. It isn't a test of the water at your tap, and it has no Water Score.
Public EPA test results
Woodinville Water District (EPA WA5341600)
EPA data as of October 14, 2026. For Woodinville's main utility, Woodinville Water District: We found no health-based violations in EPA's records for this system (WA5341600) since July 1, 2021, as of October 14, 2026. PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
What EPA records show for Woodinville Water District, as of October 14, 2026
We found no health-based violations in EPA's records for this system (WA5341600) since July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for Woodinville Water District (SDWIS). Data as of October 14, 2026.
This system buys water from Bothell Water City of (WA5307900), Cross Valley Water District (WA5316270), Northshore Utility District (WA5340800) and 2 more; see those systems' records.
Source: Bothell Water City of (WA5307900) report, Cross Valley Water District (WA5316270) report, Northshore Utility District (WA5340800) report, Redmond Water System City of (WA5371650) report, Seattle Public Utilities (WA5377050) report. Data as of October 14, 2026.
EPA's UCMR 5 testing looked for 30 contaminants here and found none.
PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.