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Water system · PWSID WY5600019

GILLETTE, CITY OF

GILLETTE, WY · ~32,222 people served

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

PWSID

WY5600019

State

Wyoming

City

GILLETTE

Population served

32,222

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 May 2025). Levels in parts per trillion (ppt).

Lithium

12,000 ppt

limit —

No federal limit

Violations & enforcement

2

Violations on record

0

Unaddressed

0

Health-based

4

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2024. Official EPA record →

Monitoring & reporting · EPA contaminant 0999 began Oct 2023 Resolved
Monitoring · Lead & Copper Rule began Jun 2023 Resolved

Recent enforcement actions

  • State action · SOX Jan 2024
  • State action · SOX Jul 2023
  • State action · SIA Sep 1988
  • State action · SIF Sep 1981

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Nitrate

1 station · latest Sep 2021

2.15 · max 2.15 mg/l as N · 2

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system WY5600019 — 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.