Tucson, Arizona Water Violations

110 water systems serve Tucson, Arizona, providing drinking water to an estimated 955,895 people. These systems have 144 health-based violations on record, meaning contaminant levels exceeded EPA maximum contaminant levels (MCLs) or required treatment standards were not met.

Select a water system below to see its full violation history, lead and copper testing results, and compliance status.

Water SystemPopulation ServedSourceViolationsHealth-Based
Gw Saguaro Dist Water Co - Rincon 232 Groundwater 147 89
Lakewood Estates Water Company 722 Groundwater 65 6
Casitas De Castilian 167 Groundwater 40 4
Tierra Linda Hoa Water Company 266 Groundwater 172 3
High Chaparral Water Coop 72 Groundwater 49 3
Sandario Water Company 870 Groundwater 19 3
Greenfields Country Day School 163 Groundwater 232 2
Flowing Wells Irrigation District 16,000 Groundwater 118 2
Federal Correctional Inst 350 Groundwater 110 2
Cactus Country RV Resort 420 Groundwater 41 2
Rancho Sierrita Well Assoc 55 Groundwater 41 2
Tucson Racquet & Fitness Club 330 Groundwater 25 2
Rio Vista Mobile Home Park 217 Groundwater 23 2
Riverside Apartments 75 Groundwater 22 2
Gator Water Company 29 Groundwater 16 2
Pcnr Gilbert Ray Tmp 150 Groundwater 7 2
Thim Utility Company - Parkin 69 Groundwater 5 2
Desert Water Coop 150 Groundwater 41 1
Rincon Mesa Landowners 75 Groundwater 26 1
Town & Country Estates 960 Groundwater 25 1
Bella Capri MHP 342 Groundwater 25 1
Youth Haven Ranches 40 Groundwater 24 1
Tucson Medical Center 3,000 Groundwater 21 1
Saint Phillips Plaza 220 Groundwater 20 1
Carolanne Drive Hoa 72 Groundwater 16 1
Rio Mercado Water 266 Groundwater 14 1
Wilmot Water Users Group 30 Groundwater 13 1
Crossroads Park MHP 100 Groundwater 10 1
Desert Shores RV MHP 220 Groundwater 8 1
Via Verde West MHP 156 Groundwater 7 1
White Stallion Guest Ranch 60 Groundwater 6 1
Usaf Davis Monthan Afb 18,640 Groundwater 332 0
Metropolitan Dwid 45,570 Groundwater 177 0
Gw Ocotillo Water - Silverbell West 263 Groundwater 144 0
Tucson City of 732,906 Groundwater 138 0
North La Cholla MHP 150 Groundwater 105 0
Sierra Court Mhc LLC 51 Groundwater 99 0
Voyager Water Company 3,209 Groundwater 96 0
Catalina Village 107 Groundwater 83 0
Adoc Tucson 4,500 Groundwater 69 0
Spanish Trail Water Company 3,822 Groundwater 64 0
University of Arizona 50,000 Groundwater 62 0
Lazy C Water Service 359 Groundwater 62 0
La Cholla Airpark 250 Groundwater Purchased 53 0
Mission Palms Apartments 720 Groundwater 49 0
Summit Water Coop 53 Groundwater 48 0
Mesaland Water Company 294 Groundwater 47 0
Metropolitan Dwid - Diablo Village 5,542 Groundwater 45 0
Gw Saguaro Dist Water Co - Mirabell 180 Groundwater 40 0
Crescent Manor MHP 200 Groundwater 38 0
Metropolitan Dwid - Lazy B 77 Groundwater 36 0
Metropolitan Dwid - Hub 4,252 Groundwater 34 0
Tanque Verde Guest Ranch 150 Groundwater 34 0
Siete Casas Joint Venture 25 Groundwater 33 0
Metropolitan Dwid - E&T System 880 Groundwater 31 0
Trails West MHP 500 Groundwater Purchased 31 0
Santa Catalina Catholic Church 212 Groundwater 30 0
Campbell Estates MHP 450 Groundwater 29 0
Wells Fargo Water Company 83 Groundwater 29 0
Vista Del Norte MHP 554 Groundwater 27 0
Diamond Grove Mobile Home Estates 385 Groundwater 27 0
Far Horizons MHP 258 Groundwater 25 0
Halcyon Acres 2 164 Groundwater 25 0
Cammies Foothills Vista Mhc 62 Groundwater 25 0
Thim Utility Company 2 445 Groundwater 22 0
Gw Saguaro Dist Water Co - Tala Way 255 Groundwater 21 0
Klafter Well Coop 45 Groundwater 21 0
Winterhaven Water Development 685 Groundwater 20 0
Thim Water Company 2 247 Groundwater 20 0
La Casita Water Company 3 605 Groundwater 19 0
Ray Water Company Inc 4,495 Groundwater 18 0
Saguaro National Park 1,440 Groundwater 17 0
Sierrita Mountain Water Coop 258 Groundwater 17 0
Ranchwood Community 225 Groundwater 17 0
Raindance Water Coop 148 Groundwater 17 0
Avra Water Coop Inc 6,685 Groundwater 16 0
Ua Tech Park - Rita Road 3,000 Groundwater 16 0
Samalayuca Improvement Assoc 150 Groundwater 16 0
Vail Water Company 17,500 Groundwater 15 0
La Casita Water Company 2 261 Groundwater 15 0
Thim Utility Company - Rancho Vista 105 Groundwater 15 0
Tucson Ready Mix Orange Grove 80 Groundwater 13 0
Rincon Country East RV Park 912 Groundwater 11 0
Catalina Country Estates 77 Groundwater 11 0
Gw Saguaro Dist Water Co - Tortolita 69 Groundwater 11 0
Pico Vista Community Well 49 Groundwater 10 0
Rio Viejo Water 272 Groundwater 9 0
Far Horizons East MHP 870 Groundwater 7 0
Tucson Country Day School 800 Groundwater 7 0
Pcnr Arthur Pack Regional 420 Groundwater 7 0
Campbell Avenue Farms 65 Groundwater 7 0
Tucson Water Corona De Tucson 10,217 Groundwater 6 0
Gw Ocotillo Water - Diamond Bell 706 Groundwater 6 0
La Casita Water Company 1 174 Groundwater 6 0
Halcyon Acres Water Users Association 215 Groundwater 5 0
Redwood Lodge 25 Groundwater 5 0
Salpointe Catholic High School 1,300 Groundwater 4 0
Pcnr Colossal Cave 210 Groundwater 4 0
Gw Ocotillo Water - Thunderhead 174 Groundwater 4 0
Silver Cholla LLC 168 Groundwater 4 0
Pcnr Arthur Pack Old - Crooked Tree 150 Groundwater 4 0
Pcnr Motor Sports 100 Groundwater 4 0
Pcnr Picture Rocks 100 Groundwater 2 0
Mission View Mobile Home Park (Tucson Water Consec 1,125 Groundwater Purchased 1 0
Lil Abners Steakhouse 100 Groundwater 1 0
Pcnr La Posta Quemada 25 Groundwater 1 0
Pcnr Fairgrounds 87 Groundwater 0 0
Sopori School Park 50 Groundwater 0 0
Hitda Training Center 35 Groundwater 0 0
El Mesquital Guest Ranch 25 Groundwater 0 0