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Water system · PWSID WI4690402

WAUPACA WATERWORKS

WAUPACA, WI · ~6,062 people served

Check your exact address → WAUPACA overview
90
Excellent
PurityRadar safety score

PWSID

WI4690402

State

Wisconsin

City

WAUPACA

Population served

6,062

Primary source

Groundwater

Score history

▼ 10 points — the score moved from 100 to 90 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 90

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

PFAS & contaminant readings

Latest detections from EPA’s UCMR5 monitoring (through Dec 2024). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

4.3 ppt

limit 4 ppt

Above EPA limit · 1.1×

PFBA

5 ppt

limit —

No federal limit

PFBS

4.4 ppt

limit —

No federal limit

Violations & enforcement

11

Violations on record

0

Unaddressed

3

Health-based

34

Enforcement actions

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

Other · EPA contaminant 7500 began Oct 2024 Resolved
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2024 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2015 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2015 Resolved
Monitoring & reporting · Total coliform began Jun 2008 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2008 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2004 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2004 Resolved
Max contaminant level (MCL) · Nitrate health-based began Oct 2003 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 1995 Resolved

Recent enforcement actions

  • State action · SOX Jul 2025
  • State action · SOX Jun 2025
  • State action · SIF Jun 2025
  • EPA/federal action · EIA Jun 2025
  • State action · SIF Jul 2024
  • State action · SIA Jan 2024
  • State action · SOX Jan 2024
  • State action · SOX Aug 2016

This profile is built from EPA public records for system WI4690402 — 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.