- EPA's UCMR 5 testing looked for 30 contaminants here and found none.
Public EPA test results
What EPA records show for Coal Creek Utility District
EPA WA5341750 · serves King County, WA · about 15,989 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
Coal Creek Utility District (EPA WA5341750)
What EPA records show for Coal Creek Utility District, as of October 14, 2026
We found no health-based violations in EPA's records for this system (WA5341750) since July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for Coal Creek Utility District (SDWIS). Data as of October 14, 2026.
This system buys water from Renton City of (WA5371850) and Seattle Public Utilities (WA5377050); see those systems' records.
Source: Renton City of (WA5371850) 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.
Your water bill names your utility.
Does Coal Creek Utility District use chloramine?
We didn't find chloramine in Coal Creek Utility District's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.
What EPA records show for this system
Reported results in EPA records (data as of Oct 14–15, 2026)