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Water system · PWSID WI6320309

LA CROSSE WATERWORKS

LA CROSSE, WI · ~53,000 people served

Check your exact address → LA CROSSE overview
68
Fair
PurityRadar safety score

PWSID

WI6320309

State

Wisconsin

City

LA CROSSE

Population served

53,000

Primary source

Groundwater

Score history

▼ 32 points — the score moved from 100 to 68 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 68

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

PFOS

Perfluorooctanesulfonic acid

5.5 ppt

limit 4 ppt

Above EPA limit · 1.4×

PFOA

Perfluorooctanoic acid

5.1 ppt

limit 4 ppt

Above EPA limit · 1.3×

PFHxS

Perfluorohexanesulfonic acid

3.5 ppt

limit 10 ppt

Below EPA limit

PFBS

15 ppt

limit —

No federal limit

PFBA

7.3 ppt

limit —

No federal limit

PFHxA

3.7 ppt

limit —

No federal limit

PFPeA

3 ppt

limit —

No federal limit

Violations & enforcement

24

Violations on record

0

Unaddressed

3

Health-based

71

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Apr 2023. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Apr 2023 Resolved
Monitoring & reporting · Lead & Copper Rule began Feb 2021 Resolved
Other · EPA contaminant 7500 began Oct 2019 Resolved
Monitoring & reporting · Nitrate began Jan 2019 Resolved
Other · EPA contaminant 7500 began Oct 2017 Resolved
Other · EPA contaminant 7500 began Oct 2017 Resolved
Other · EPA contaminant 7500 began Oct 2017 Resolved
Other · EPA contaminant 7500 began Oct 2017 Resolved
Other · EPA contaminant 7500 began Oct 2017 Resolved
Other · EPA contaminant 7500 began Oct 2017 Resolved
Monitoring & reporting · Lead & Copper Rule began Jun 2017 Resolved
Monitoring & reporting · Lead & Copper Rule began Jun 2017 Resolved

Recent enforcement actions

  • State action · SIA Apr 2023
  • State action · SOX Apr 2023
  • State action · SOX Jun 2021
  • State action · SIF Jun 2021
  • State action · SIA Mar 2021
  • State action · SOX Feb 2021
  • State action · SIA Dec 2020
  • State action · SOX Jul 2020

This profile is built from EPA public records for system WI6320309 — 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.