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Water system · PWSID NV0000162

MCDERMITT WATER SYSTEM

WINNEMUCCA, NV · ~200 people served

Check your exact address → WINNEMUCCA overview
100
Excellent
PurityRadar safety score

PWSID

NV0000162

State

Nevada

City

WINNEMUCCA

Population served

200

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

55

Violations on record

0

Unaddressed

27

Health-based

121

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2022. Official EPA record →

Monitoring & reporting · Arsenic began Jul 2021 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2021 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2021 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2021 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2020 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2020 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2020 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2020 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2020 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2019 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2019 Resolved
Monitoring · Lead & Copper Rule began Jun 2019 Resolved

Recent enforcement actions

  • State action · SIE Feb 2022
  • State action · SIA Feb 2022
  • State action · SOX Dec 2021
  • State action · SOX Oct 2021
  • State action · SOX Aug 2021
  • State action · SIF Jul 2021
  • State action · SIA Jul 2021
  • State action · SIE Jul 2021

This profile is built from EPA public records for system NV0000162 — 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.