COMBINED LOCKS WATERWORKS

COMBINED LOCKS, WI · ~3,609 people served

Check your exact address → COMBINED LOCKS overview

100

Excellent

PurityRadar safety score

PWSID

WI4450409

State

Wisconsin

City

COMBINED LOCKS

Population served

3,609

Primary source

GWP

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

Lithium

10,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Other · EPA contaminant 7500 began Oct 2024 Unaddressed

Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Resolved

Other · EPA contaminant 7500 began Oct 2024 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2024 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2024 Resolved

Other · EPA contaminant 7000 began Oct 2012 Resolved

Other · EPA contaminant 7000 began Jul 2012 Resolved

Monitoring & reporting · Total coliform began Jun 1997 Resolved

Recent enforcement actions

State action · SOX Jul 2025
State action · SIF Jun 2025
State action · SOX Jun 2025
State action · SIF Jun 2025
State action · SOX Dec 2024
State action · SIE Dec 2024
State action · SIA Dec 2024
State action · SOX Jul 2013

This profile is built from EPA public records for system WI4450409 — 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.