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Water system · PWSID 055295703

ONEIDA #1 OR SITE #1

ONEIDA, WI · ~4,393 people served

Check your exact address → ONEIDA overview
100
Excellent
PurityRadar safety score

PWSID

055295703

State

Wisconsin

City

ONEIDA

Population served

4,393

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

Latest detections from EPA’s UCMR5 monitoring (through May 2025). Levels in parts per trillion (ppt).

Lithium

12,000 ppt

limit —

No federal limit

Violations & enforcement

30

Violations on record

0

Unaddressed

0

Health-based

15

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Jan 2024 Resolved
Monitoring · Lead & Copper Rule began Aug 2016 Resolved
Monitoring & reporting · Total coliform began Jan 2010 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jan 2010 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2007 Resolved
Monitoring & reporting · EPA contaminant 2991 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2987 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2983 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2984 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2985 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2976 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2996 began Jan 1996 Resolved

Recent enforcement actions

  • EPA/federal action · EIF Oct 2025
  • EPA/federal action · EIE Nov 2024
  • EPA/federal action · EOX Oct 2024
  • EPA/federal action · EIA Oct 2024
  • EPA/federal action · EOX Sep 2016
  • EPA/federal action · EIA Feb 2010
  • EPA/federal action · EOX Feb 2010
  • EPA/federal action · EOX Sep 2007

This profile is built from EPA public records for system 055295703 — 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.