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Water system · PWSID NE3104109

MASON CITY, VILLAGE OF

MASON CITY, NE · ~171 people served

Check your exact address → MASON CITY overview
100
Excellent
PurityRadar safety score

PWSID

NE3104109

State

Nebraska

City

MASON CITY

Population served

171

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

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

18

Violations on record

1

Unaddressed

13

Health-based

69

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Jan 2023 Unaddressed
Max contaminant level (MCL) · Lead & Copper Rule health-based began Aug 2018 Resolved
Max contaminant level (MCL) · Lead & Copper Rule health-based began Sep 2017 Resolved
Treatment technique · Lead & Copper Rule health-based began Dec 2016 Resolved
Max contaminant level (MCL) · Lead & Copper Rule health-based began Oct 2016 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2010 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 2003 Resolved
Monitoring & reporting · Total coliform began Oct 2003 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2002 Resolved
Other · EPA contaminant 7000 began Jul 2002 Resolved
Other · EPA contaminant 7000 began Jul 2000 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2000 Resolved

Recent enforcement actions

  • State action · SOX Sep 2018
  • State action · SFL Sep 2018
  • State action · SIF Sep 2018
  • State action · SIE Sep 2018
  • State action · SIA Sep 2018
  • State action · SOX Nov 2017
  • State action · SIF Oct 2017
  • State action · SIE Oct 2017

This profile is built from EPA public records for system NE3104109 — 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.