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Water system · PWSID WI7370660

RIB MOUNTAIN WATER UTILITY

WAUSAU, WI · ~6,398 people served

Check your exact address → WAUSAU overview
57
Fair
PurityRadar safety score

PWSID

WI7370660

State

Wisconsin

City

WAUSAU

Population served

6,398

Primary source

Groundwater

Score history

▼ 43 points — the score moved from 100 to 57 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 57

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 Oct 2024). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

9.4 ppt

limit 4 ppt

Above EPA limit · 2.4×

PFOA

Perfluorooctanoic acid

4.3 ppt

limit 4 ppt

Above EPA limit · 1.1×

PFHxS

Perfluorohexanesulfonic acid

9.2 ppt

limit 10 ppt

Near EPA limit

PFPeA

23 ppt

limit —

No federal limit

PFBA

14 ppt

limit —

No federal limit

PFHxA

5.9 ppt

limit —

No federal limit

PFBS

3.7 ppt

limit —

No federal limit

Violations & enforcement

3

Violations on record

0

Unaddressed

0

Health-based

6

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2019. Official EPA record →

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2018 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2018 Resolved
Other · EPA contaminant 7000 began Jul 2000 Resolved

Recent enforcement actions

  • State action · SOX Jul 2019
  • State action · SIF Jun 2019
  • State action · SIE Nov 2018
  • State action · SIA Nov 2018
  • State action · SOX Jul 2000
  • State action · SIA Sep 1986

This profile is built from EPA public records for system WI7370660 — 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.