- EPA's UCMR 5 testing looked for 30 contaminants here and found 2.
- PFHxS (a PFAS): found in 2 of 2 samples, average 10 ppt, highest 11 ppt (EPA UCMR 5 testing, Jan 2023–Jul 2023)
- PFBS (a PFAS): found in 1 of 2 samples, average 1.5 ppt, highest 3 ppt (EPA UCMR 5 testing, Jan 2023–Jul 2023)
- Lead, 90th percentile: 2 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2023–Jun 30, 2023). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
Public EPA test results
Can you drink Eau Claire tap water? What EPA records show
EPA WI6180230 · serves Eau Claire, WI · about 70,587 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
Eau Claire Waterworks (EPA WI6180230)
EPA data as of October 14, 2026. For Eau Claire's main utility, Eau Claire Waterworks: We found no health-based violations in EPA's records for this system (WI6180230) 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 Eau Claire Waterworks, as of October 14, 2026
We found no health-based violations in EPA's records for this system (WI6180230) since July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for Eau Claire Waterworks (SDWIS). Data as of October 14, 2026.
Lead, 90th percentile: 2 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2023–Jun 30, 2023). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 2.
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 Eau Claire Waterworks use chloramine?
EPA treatment records (state-reported) list chloramines for Eau Claire Waterworks. EPA record