Wyoming Water Systems

Wyoming public water system directory

This directory lists the public water system profiles currently available for Wyoming. It is not a complete statewide inventory, and it is not an address-level service lookup.

Compare Systems

3 available Wyoming system records

Compare the PWSID, linked community, source-water context, and report year currently available for each Wyoming record.

All systems are shown.

PWSIDSystemCitiesCountiesSource waterViolation records shownLatest CCR
WY5600011CHEYENNE BOARD OF PUBLIC UTILITIESCheyenneNot verifiedSurface water plus groundwater from the High Plains/Ogallala and White River aquifersNo violation records shown in available records2025
WY5600019GILLETTE, CITY OFGilletteNot verifiedGroundwater from 31 wells in the Lance/Fox Hills, Fort Union, and Madison formationsNo violation records shown in available records2025
WY5601182ROCK SPRINGS, CITY OFRock SpringsNot verifiedGreen River surface water purchased from the Joint Powers Water Board and treated at its Green River water treatment plantNo violation records shown in available records2025
PWSIDWY5600011
SystemCHEYENNE BOARD OF PUBLIC UTILITIES
CitiesCheyenne
CountiesNot verified
Source waterSurface water plus groundwater from the High Plains/Ogallala and White River aquifers
Violation records shownNo violation records shown in available records
Latest CCR2025
PWSIDWY5600019
SystemGILLETTE, CITY OF
CitiesGillette
CountiesNot verified
Source waterGroundwater from 31 wells in the Lance/Fox Hills, Fort Union, and Madison formations
Violation records shownNo violation records shown in available records
Latest CCR2025
PWSIDWY5601182
SystemROCK SPRINGS, CITY OF
CitiesRock Springs
CountiesNot verified
Source waterGreen River surface water purchased from the Joint Powers Water Board and treated at its Green River water treatment plant
Violation records shownNo violation records shown in available records
Latest CCR2025

Profiles

Open a Wyoming public water system profile

Each of these 3 profiles keeps its source links, annual-report details, limitations, and summarized CCR entries together.

Last updated: EPA data

CHEYENNE BOARD OF PUBLIC UTILITIES

PWSID WY5600011

View system profile

System-level profile for Cheyenne. Use it to review report-year context, source links, available violation records, contaminant relationships, and limitations.

System type
Communities
Cheyenne
Counties
County not listed
Latest CCR
2025
Last updated: EPA data

GILLETTE, CITY OF

PWSID WY5600019

View system profile

System-level profile for Gillette. Use it to review report-year context, source links, available violation records, contaminant relationships, and limitations.

System type
Communities
Gillette
Counties
County not listed
Latest CCR
2025
Last updated: EPA data

ROCK SPRINGS, CITY OF

PWSID WY5601182

View system profile

System-level profile for Rock Springs. Use it to review report-year context, source links, available violation records, contaminant relationships, and limitations.

System type
Communities
Rock Springs
Counties
County not listed
Latest CCR
2025