MAYVILLE WATERWORKS

MAYVILLE, WI · ~5,112 people served

Check your exact address → MAYVILLE overview

100

Excellent

PurityRadar safety score

PWSID

WI1140057

State

Wisconsin

City

MAYVILLE

Population served

5,112

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

Latest detections from EPA’s UCMR5 monitoring (through Nov 2024). Levels in parts per trillion (ppt).

Lithium

15,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2018. Official EPA record →

Reporting · Lead & Copper Rule began Nov 2017 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jul 2012 Resolved

Monitoring & reporting · Total coliform began Jul 2012 Resolved

Other · EPA contaminant 7500 began Aug 2010 Resolved

Max contaminant level (MCL) · Uranium health-based began Jul 2010 Resolved

Max contaminant level (MCL) · Total coliform health-based began Sep 2000 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jul 1996 Resolved

Monitoring & reporting · Nitrate began Oct 1994 Resolved

Max contaminant level (MCL) · Uranium health-based began Aug 1983 Resolved

Recent enforcement actions

State action · SIF Jun 2018
State action · SIE Mar 2018
State action · SIA Mar 2018
State action · SOX Jan 2018
State action · SOX Jun 2014
State action · SO8 Apr 2014
State action · SIF Jun 2013
State action · SIF Mar 2013

This profile is built from EPA public records for system WI1140057 — 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.