KNAPP WATERWORKS

Knapp, WI · ~486 people served

Check your exact address → Knapp overview

100

Excellent

PurityRadar safety score

PWSID

WI6170267

State

Wisconsin

City

Knapp

Population served

486

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2025. Official EPA record →

Treatment technique · EPA contaminant 0400 health-based began Sep 2025 Resolved

Monitoring · Lead & Copper Rule began Apr 2024 Resolved

Monitoring · Lead & Copper Rule began Aug 2023 Resolved

Monitoring · Lead & Copper Rule began Feb 2023 Resolved

Monitoring & reporting · EPA contaminant 3014 began Sep 2022 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2020 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2020 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jan 2018 Resolved

Monitoring & reporting · EPA contaminant 0999 began Apr 2017 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2017 Resolved

Monitoring & reporting · Lead & Copper Rule began Jun 2016 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2013 Resolved

Recent enforcement actions

State action · SOX Dec 2025
State action · SIA Sep 2025
State action · SIF May 2024
State action · SOX May 2024
State action · SIE May 2024
State action · SIA May 2024
State action · SIF Mar 2024
State action · SIF Mar 2024

This profile is built from EPA public records for system WI6170267 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.