Colorado Water Systems

Colorado public water system directory

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

Compare Systems

15 available Colorado system records

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

All systems are shown.

PWSIDSystemCitiesCountiesSource waterViolation records shownLatest CCR
CO0135291City of Fort CollinsFort CollinsNot verifiedSurface water from the Poudre River and Horsetooth ReservoirNo violation records shown in available records2025
CO0162321City of GreeleyGreeleyNot verifiedSurface water from listed river, reservoir, and treatment-plant suppliesNo violation records shown in available records2026
CO0151500Board of Water Works of Pueblo, ColoradoPuebloNot verifiedSurface waterNo violation records shown in available records2026
CO0107485City of LongmontLongmontNot verifiedSurface water from the St. Vrain Creek Watershed and Upper Colorado River WatershedNo violation records shown in available records2025
CO0135485City of LovelandLovelandNot verifiedSurface water from the Big Thompson River Basin and Colorado River BasinNo violation records shown in available records2024
CO0139321City of Grand JunctionGrand JunctionNot verifiedSurface waterNo violation records shown in available records2026
CO0107152City of BoulderBoulderNot verifiedSurface water from Barker Reservoir, North Boulder Creek, Carter Lake, and Boulder ReservoirNo violation records shown in available records2026
CO0107155City and County of BroomfieldBroomfieldNot verifiedSurface waterNo violation records shown in available records2025
CO0118010Town of Castle RockCastle RockNot verifiedGroundwater, alluvial wells, surface diversions, and WISE waterNo violation records shown in available records2026
CO0118040Parker Water and Sanitation DistrictParkerNot verifiedGroundwater and surface-water suppliesNo violation records shown in available records2026
CO0162255Town of ErieErieNot verifiedSurface water, purchased water, and listed emergency connectionsNo violation records shown in available records2025
CO0107473City of LafayetteLafayetteNot verifiedSurface waterNo violation records shown in available records2025
CO0134150City of DurangoDurangoNot verifiedSurface waterNo violation records shown in available records2025
CO0123314City of Glenwood SpringsGlenwood SpringsNot verifiedSurface waterNo violation records shown in available records2026
CO0122100City of Canon CityCanon CityNot verifiedSurface water from the Arkansas RiverNo violation records shown in available records2026
PWSIDCO0135291
SystemCity of Fort Collins
CitiesFort Collins
CountiesNot verified
Source waterSurface water from the Poudre River and Horsetooth Reservoir
Violation records shownNo violation records shown in available records
Latest CCR2025
PWSIDCO0162321
SystemCity of Greeley
CitiesGreeley
CountiesNot verified
Source waterSurface water from listed river, reservoir, and treatment-plant supplies
Violation records shownNo violation records shown in available records
Latest CCR2026
PWSIDCO0151500
SystemBoard of Water Works of Pueblo, Colorado
CitiesPueblo
CountiesNot verified
Source waterSurface water
Violation records shownNo violation records shown in available records
Latest CCR2026
PWSIDCO0107485
SystemCity of Longmont
CitiesLongmont
CountiesNot verified
Source waterSurface water from the St. Vrain Creek Watershed and Upper Colorado River Watershed
Violation records shownNo violation records shown in available records
Latest CCR2025
PWSIDCO0135485
SystemCity of Loveland
CitiesLoveland
CountiesNot verified
Source waterSurface water from the Big Thompson River Basin and Colorado River Basin
Violation records shownNo violation records shown in available records
Latest CCR2024
PWSIDCO0139321
SystemCity of Grand Junction
CitiesGrand Junction
CountiesNot verified
Source waterSurface water
Violation records shownNo violation records shown in available records
Latest CCR2026
PWSIDCO0107152
SystemCity of Boulder
CitiesBoulder
CountiesNot verified
Source waterSurface water from Barker Reservoir, North Boulder Creek, Carter Lake, and Boulder Reservoir
Violation records shownNo violation records shown in available records
Latest CCR2026
PWSIDCO0107155
SystemCity and County of Broomfield
CitiesBroomfield
CountiesNot verified
Source waterSurface water
Violation records shownNo violation records shown in available records
Latest CCR2025
PWSIDCO0118010
SystemTown of Castle Rock
CitiesCastle Rock
CountiesNot verified
Source waterGroundwater, alluvial wells, surface diversions, and WISE water
Violation records shownNo violation records shown in available records
Latest CCR2026
PWSIDCO0118040
SystemParker Water and Sanitation District
CitiesParker
CountiesNot verified
Source waterGroundwater and surface-water supplies
Violation records shownNo violation records shown in available records
Latest CCR2026
PWSIDCO0162255
SystemTown of Erie
CitiesErie
CountiesNot verified
Source waterSurface water, purchased water, and listed emergency connections
Violation records shownNo violation records shown in available records
Latest CCR2025
PWSIDCO0107473
SystemCity of Lafayette
CitiesLafayette
CountiesNot verified
Source waterSurface water
Violation records shownNo violation records shown in available records
Latest CCR2025
PWSIDCO0134150
SystemCity of Durango
CitiesDurango
CountiesNot verified
Source waterSurface water
Violation records shownNo violation records shown in available records
Latest CCR2025
PWSIDCO0123314
SystemCity of Glenwood Springs
CitiesGlenwood Springs
CountiesNot verified
Source waterSurface water
Violation records shownNo violation records shown in available records
Latest CCR2026
PWSIDCO0122100
SystemCity of Canon City
CitiesCanon City
CountiesNot verified
Source waterSurface water from the Arkansas River
Violation records shownNo violation records shown in available records
Latest CCR2026

Profiles

Open a Colorado public water system profile

Each of these 15 profiles keeps its source links, annual-report details, limitations, and summarized CCR entries together.

Last updated: Utility report

City of Fort Collins

PWSID CO0135291

View system profile

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

System type
Community water system
Communities
Fort Collins
Counties
County not listed
Latest CCR
2025
Last updated: Utility report

City of Greeley

PWSID CO0162321

View system profile

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

System type
Community water system
Communities
Greeley
Counties
County not listed
Latest CCR
2026
Last updated: Utility report

Board of Water Works of Pueblo, Colorado

PWSID CO0151500

View system profile

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

System type
Community water system
Communities
Pueblo
Counties
County not listed
Latest CCR
2026
Last updated: Utility report

City of Longmont

PWSID CO0107485

View system profile

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

System type
Community water system
Communities
Longmont
Counties
County not listed
Latest CCR
2025
Last updated: Utility report

City of Loveland

PWSID CO0135485

View system profile

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

System type
Community water system
Communities
Loveland
Counties
County not listed
Latest CCR
2024
Last updated: Utility report

City of Grand Junction

PWSID CO0139321

View system profile

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

System type
Community water system
Communities
Grand Junction
Counties
County not listed
Latest CCR
2026
Last updated: Utility report

City of Boulder

PWSID CO0107152

View system profile

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

System type
Community water system
Communities
Boulder
Counties
County not listed
Latest CCR
2026
Last updated: Utility report

City and County of Broomfield

PWSID CO0107155

View system profile

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

System type
Community water system
Communities
Broomfield
Counties
County not listed
Latest CCR
2025
Last updated: Utility report

Town of Castle Rock

PWSID CO0118010

View system profile

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

System type
Community water system
Communities
Castle Rock
Counties
County not listed
Latest CCR
2026
Last updated: Utility report

Parker Water and Sanitation District

PWSID CO0118040

View system profile

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

System type
Community water system
Communities
Parker
Counties
County not listed
Latest CCR
2026
Last updated: Utility report

Town of Erie

PWSID CO0162255

View system profile

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

System type
Community water system
Communities
Erie
Counties
County not listed
Latest CCR
2025
Last updated: Utility report

City of Lafayette

PWSID CO0107473

View system profile

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

System type
Community water system
Communities
Lafayette
Counties
County not listed
Latest CCR
2025
Last updated: Utility report

City of Durango

PWSID CO0134150

View system profile

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

System type
Community water system
Communities
Durango
Counties
County not listed
Latest CCR
2025
Last updated: Utility report

City of Glenwood Springs

PWSID CO0123314

View system profile

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

System type
Community water system
Communities
Glenwood Springs
Counties
County not listed
Latest CCR
2026
Last updated: Utility report

City of Canon City

PWSID CO0122100

View system profile

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

System type
Community water system
Communities
Canon City
Counties
County not listed
Latest CCR
2026