OAKFIELD WATERWORKS

OAKFIELD, WI · ~1,058 people served

Check your exact address → OAKFIELD overview

100

Excellent

PurityRadar safety score

PWSID

WI4200475

State

Wisconsin

City

OAKFIELD

Population served

1,058

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 Jun 2020. Official EPA record →

Other · EPA contaminant 7500 began Oct 2010 Unaddressed

Monitoring · Lead & Copper Rule began Oct 2019 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2012 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2008 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2008 Resolved

Monitoring & reporting · Nitrate began Jan 1998 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 1998 Resolved

Monitoring & reporting · Total coliform began Nov 1996 Resolved

Recent enforcement actions

State action · SIF Jun 2020
State action · SIE Nov 2019
State action · SIA Nov 2019
State action · SOX Nov 2019
State action · SOX Aug 2012
State action · SO8 Feb 2012
State action · SOX Sep 2011
State action · SIA Nov 2010

This profile is built from EPA public records for system WI4200475 — 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.