- EPA's UCMR 5 testing looked for 30 contaminants here and found 1.
- Lithium: found in 6 of 6 samples, average 11.2 µg/L, highest 12 µg/L (EPA UCMR 5 testing, Jul 2024–Jan 2025)
- Lead, 90th percentile: 8.6 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 Jun 1, 2025–Sep 30, 2025). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
- Health-based violation: Lead and Copper Rule, LEAD AND COPPER RULE REVISIONS, Oct 2024–Jun 2025 (EPA SDWIS)
Public EPA test results
Can you drink Little Chute tap water? What EPA records show
EPA WI4450338 · serves Little Chute, WI · about 12,168 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
Little Chute Waterworks (EPA WI4450338)
ScoreYourWater.com gives no verdict on your tap water; it shows what the public records say, as of October 14, 2026. For Little Chute's main utility, Little Chute Waterworks: 1 health-based violation since July 1, 2021 in EPA records (EPA SDWIS). PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
What EPA records show for Little Chute Waterworks, as of October 14, 2026
Health-based violation: Lead and Copper Rule, LEAD AND COPPER RULE REVISIONS, Oct 2024–Jun 2025 (EPA SDWIS).
Lead, 90th percentile: 8.6 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 Jun 1, 2025–Sep 30, 2025). 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 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 Little Chute Waterworks use chloramine?
We didn't find chloramine in Little Chute Waterworks'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)