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Water system · PWSID WI7720165

MARSHFIELD UTILITIES

MARSHFIELD, WI · ~18,815 people served

Check your exact address → MARSHFIELD overview
59
Fair
PurityRadar safety score

PWSID

WI7720165

State

Wisconsin

City

MARSHFIELD

Population served

18,815

Primary source

Groundwater

Score history

▼ 41 points — the score moved from 100 to 59 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 59

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 Jul 2023). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

12 ppt

limit 4 ppt

Above EPA limit · 3.0×

PFHxS

Perfluorohexanesulfonic acid

10 ppt

limit 10 ppt

Near EPA limit

PFPeA

14 ppt

limit —

No federal limit

PFHxA

11 ppt

limit —

No federal limit

PFBA

6.7 ppt

limit —

No federal limit

PFHpA

3.4 ppt

limit —

No federal limit

PFBS

3.2 ppt

limit —

No federal limit

Violations & enforcement

4

Violations on record

0

Unaddressed

1

Health-based

10

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2021. Official EPA record →

Treatment technique · Lead & Copper Rule health-based began Nov 2020 Resolved
Monitoring & reporting · EPA contaminant 4030 began Jul 2015 Resolved
Monitoring & reporting · Uranium began Jul 2015 Resolved
Monitoring & reporting · Gross alpha began Jul 2015 Resolved

Recent enforcement actions

  • State action · SIF Jun 2021
  • State action · SIE May 2021
  • State action · SIA May 2021
  • State action · SOX May 2021
  • State action · SIF May 2016
  • State action · SOX Nov 2015
  • State action · SIE Oct 2015
  • State action · SIA Oct 2015

This profile is built from EPA public records for system WI7720165 — 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.