CHEYENNE BOARD OF PUBLIC UTILITIES

CHEYENNE, WY · ~64,165 people served

Check your exact address → CHEYENNE overview

100

Excellent

PurityRadar safety score

PWSID

WY5600011

State

Wyoming

City

CHEYENNE

Population served

64,165

Primary source

Surface water

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 2024). Levels in parts per trillion (ppt).

Lithium

9,560 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement May 1999. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Jul 1994 Resolved

Recent enforcement actions

State action · SOX May 1999
State action · SIA Sep 1988
State action · SIA Sep 1983
State action · SIF Sep 1983

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

2 stations · latest Sep 2021

2.6 · max 2.66 mg/l as N · 4

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 WY5600011 — 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.