- EPA's UCMR 5 testing looked for 30 contaminants here and found 1.
- PFBA (a PFAS): found in 1 of 4 samples, average 1.3 ppt, highest 5 ppt (EPA UCMR 5 testing, Jan 2025–Jul 2025)
Public EPA test results
Can you drink Wausau tap water? What EPA records show
EPA WI7370102 · serves Wausau, WI · about 39,994 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
Wausau Waterworks (EPA WI7370102)
EPA data as of October 14, 2026. For Wausau's main utility, Wausau Waterworks: We found no health-based violations in EPA's records for this system (WI7370102) 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 Wausau Waterworks, as of October 14, 2026
We found no health-based violations in EPA's records for this system (WI7370102) since July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for Wausau Waterworks (SDWIS). Data as of October 14, 2026.
We found no lead 90th-percentile result in EPA's records for this system (WI7370102) for a monitoring period that ran on or after July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for Wausau Waterworks (SDWIS). Data as of October 14, 2026.
EPA's UCMR 5 testing looked for 30 contaminants here and found 1.
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 Wausau Waterworks use chloramine?
EPA treatment records (state-reported) list chloramines for Wausau Waterworks. EPA record