All water systems in Arizona
1,713 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Page City of Page · Coconino County |
7,445 | 3 | 1 | |
|
Big Park Water Company Sedona · Yavapai County |
7,392 | 6 | 3 | |
|
Fort McDowell Community County |
7,260 | 3 | 0 | |
|
Quail Creek Water Company Green Valley · Pima County |
6,812 | 0 | 0 | |
|
Avra Water Coop INC Tucson · Pima County |
6,685 | 2 | 0 | |
|
Wickenburg Town of Wickenburg · Maricopa County |
6,581 | 2 | 0 | |
|
Sunrise Water Company Peoria · Maricopa County |
6,500 | 1 | 0 | |
|
Carl T Hayden Veterans Medical Center Maricopa County |
6,293 | 1 | 0 | |
|
Tuba City Ntua Tuba City · County |
6,276 | 0 | 0 | |
|
Valley Pioneers Water Company INC Kingman · Mohave County |
6,263 | 4 | 0 | |
|
Rose Valley Water Company Phoenix · Maricopa County |
6,202 | 1 | 0 | |
|
Oro Valley Water Countryside Oro Valley · Pima County |
6,031 | 0 | 0 | |
|
Valley Utilities Water Company Glendale Glendale · Maricopa County |
6,003 | 0 | 0 | |
|
Cave Creek Water Cave Creek · Maricopa County |
5,895 | 0 | 0 | |
|
Snowflake Town of Snowflake · Navajo County |
5,590 | 4 | 0 | |
|
Metropolitan Dwid Diablo Village Tucson · Pima County |
5,542 | 3 | 0 | |
|
Marana Municipal Hartman Vistas Marana · Pima County |
5,408 | 0 | 0 | |
|
Town of Camp Verde Utilities Camp Verde · Yavapai County |
5,380 | 2 | 0 | |
|
Ponderosa Dwid Pinetop · Navajo County |
5,375 | 3 | 0 | |
|
Benson, City of Water System Benson · Cochise County |
5,355 | 3 | 1 | |
|
Epcor Rio Verde Rio Verde · Maricopa County |
5,330 | 2 | 0 | |
|
Gric Dpw Sacaton Sacaton, Sacaton Flats, Upper San Tan and 1 more · County |
5,307 | 3 | 0 | |
|
Cocopah Casino County |
5,300 | 1 | 0 | |
|
Marana Municipal Picture Rocks Marana · Pima County |
5,270 | 0 | 0 | |
|
Clarkdale Municipal Water System Clarkdale · Yavapai County |
5,201 | 1 | 0 | |
|
Pinon-District 4 Ntua Pinon, South Pinon, Burnt Corn and 1 more · County |
5,195 | 2 | 0 | |
|
North Mohave Valley Bullhead City · Mohave County |
5,190 | 6 | 2 | |
|
Dilkon-Indian Wells-Greasewood-White Cone Ntua Dilcon, Indian Wells, Lower Greasewood · County |
4,986 | 2 | 1 | |
|
Marana Municipal Airline Lambert Marana · Pima County |
4,948 | 0 | 0 | |
|
Epcor Tierra del Rio Peoria · Maricopa County |
4,868 | 1 | 0 | |
|
Holbrook City of Holbrook · Navajo County |
4,833 | 6 | 2 | |
|
Arizona Water CO San Manuel San Manuel · Pinal County |
4,737 | 1 | 0 | |
|
Epcor Lake Havasu Lake Havasu City · Mohave County |
4,712 | 5 | 0 | |
|
Eagar Town of Eagar · Apache County |
4,590 | 5 | 1 | |
|
Cottonwood Municipal Water VV6 Cottonwood · Yavapai County |
4,518 | 2 | 0 | |
|
Adoc Tucson Tucson · Pima County |
4,500 | 1 | 0 | |
|
Phoenix International Raceway Phoenix · Maricopa County |
4,500 | 1 | 0 | |
|
Ray Water Company INC Tucson · Pima County |
4,495 | 2 | 0 | |
|
GW Farmers Water CO Continental Green Valley · Pima County |
4,475 | 1 | 0 | |
|
Cordes Lakes Water Company Cordes Lakes · Yavapai County |
4,425 | 1 | 0 | |
|
Aspc Lewis Complex Water System Buckeye · Maricopa County |
4,300 | 6 | 1 | |
|
Metropolitan Dwid Hub Tucson · Pima County |
4,252 | 1 | 0 | |
|
GW Santa Cruz Water CO Red Rock Red Rock · Pinal County |
4,248 | 1 | 0 | |
|
Arizona Water CO Superior Superior · Pinal County |
4,232 | 0 | 0 | |
|
Desert Hills Water Cave Creek · Maricopa County |
4,220 | 0 | 0 | |
|
Aspc Yuma Yuma · Yuma County |
4,197 | 4 | 0 | |
|
Town of Taylor Taylor · Navajo County |
4,190 | 7 | 2 | |
|
Morenci Water Elec CO Main Morenci · Greenlee County |
4,078 | 5 | 0 | |
|
Sells Intertie Sells, Big Fields · County |
4,000 | 0 | 0 | |
|
Golden Shores Water Company Topock · Mohave County |
3,970 | 3 | 1 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules currently in violation at EPA's latest data refresh.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Arizona records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.