Water Quality: Tucson, AZ
115 water systems • 899,456 people served
Multiple Health Violations5285
Total Violations
195
Health-Based Violations
115
Water Systems
899,456
Population Served
Water Quality Summary
Tucson has 195 health-based violations on record, meaning one or more contaminants were found above EPA-established safe levels. Contaminants involved: Barium, Chlorine Dioxide, Disinfection Byproducts, E. coli, Gross Alpha, Lead, Selenium, Stage 2 DBP, TTHM. In total, 5285 violations are on record for 115 water systems serving 899,456 people.
Contaminants Found
Barium
Chlorine Dioxide
Disinfection Byproducts
E. coli
Gross Alpha
Lead
Selenium
Stage 2 DBP
TTHM
Water Systems Serving Tucson
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| TUCSON CITY OF | AZ0410112 | Groundwater | 732,906 | 138 |
| METROPOLITAN DWID | AZ0410076 | Groundwater | 45,570 | 177 |
| FLOWING WELLS IRRIGATION DISTRICT | AZ0410051 | Groundwater | 16,000 | 118 |
| TUCSON WATER CORONA DE TUCSON | AZ0410169 | Groundwater | 10,217 | 6 |
| QUAIL CREEK WATER COMPANY | AZ0410262 | Groundwater | 6,812 | 24 |
| AVRA WATER COOP INC | AZ0410006 | Groundwater | 6,685 | 16 |
| METROPOLITAN DWID - DIABLO VILLAGE | AZ0410357 | Groundwater | 5,542 | 45 |
| MARANA MUNICIPAL - PICTURE ROCKS | AZ0410092 | Groundwater | 5,278 | 15 |
| MARANA MUNICIPAL - HARTMAN VISTAS | AZ0410329 | Groundwater | 5,248 | 12 |
| MARANA MUNICIPAL - AIRLINE LAMBERT | AZ0410138 | Groundwater | 4,568 | 15 |
| ADOC TUCSON | AZ0420557 | Groundwater | 4,500 | 69 |
| RAY WATER COMPANY INC | AZ0410095 | Groundwater | 4,495 | 18 |
| METROPOLITAN DWID - HUB | AZ0410060 | Groundwater | 4,252 | 34 |
| SPANISH TRAIL WATER COMPANY | AZ0410127 | Groundwater | 3,822 | 64 |
| SAGUARO WATER COMPANY | AZ0410177 | Groundwater | 3,243 | 53 |
| VOYAGER WATER COMPANY | AZ0410035 | Groundwater | 3,209 | 96 |
| GOODMAN WATER COMPANY | AZ0411130 | Groundwater | 2,656 | 29 |
| VALLE VERDE WATER COMPANY - EAST | AZ0412009 | Groundwater | 2,331 | 351 |
| TOWN OF HUACHUCA CITY | AZ0402019 | Groundwater | 1,750 | 72 |
| SOUTHLAND UTILITIES - GOLDEN ACRES | AZ0402029 | Groundwater | 1,614 | 46 |
| CEDAR GROVE WATER COMPANY | AZ0401049 | Groundwater | 1,564 | 41 |
| LORD AZ WATER 2 - WINCHESTER TRAILS | AZ0401047 | Groundwater | 1,304 | 62 |
| WATCO WATER | AZ0409049 | Groundwater | 1,153 | 30 |
| CHAPARRAL WATER COMPANY | AZ0407064 | Groundwater | 963 | 18 |
| RINCON COUNTRY EAST RV PARK | AZ0420602 | Groundwater | 912 | 11 |
| RANCHO DEL CONEJO COMM WATER COOP | AZ0410142 | Groundwater | 900 | 44 |
| METROPOLITAN DWID - E&T SYSTEM | AZ0410046 | Groundwater | 880 | 31 |
| FAR HORIZONS EAST MHP | AZ0420443 | Groundwater | 870 | 7 |
| BROOKE WATER LLC - CIRCLE CITY WC | AZ0407112 | Groundwater | 815 | 69 |
| GREENEHAVEN WATER COMPANY | AZ0403037 | Groundwater | 807 | 65 |
| LAKEWOOD ESTATES WATER COMPANY | AZ0410063 | Groundwater | 722 | 65 |
| MISSION PALMS APARTMENTS | AZ0420570 | Groundwater | 720 | 49 |
| WINTERHAVEN WATER DEVELOPMENT | AZ0410119 | Groundwater | 685 | 20 |
| LA CASITA WATER COMPANY 3 | AZ0420606 | Groundwater | 605 | 19 |
| ANWAY MANVILLE WATER COMPANY | AZ0410354 | Groundwater | 576 | 25 |
| VISTA DEL NORTE MHP | AZ0420439 | Groundwater | 554 | 27 |
| COLDWATER CANYON 1 | AZ0413020 | Groundwater | 541 | 93 |
| TRAILS WEST MHP | AZ0410408 | Groundwater | 500 | 31 |
| BOWIE WID | AZ0402006 | Groundwater | 489 | 54 |
| CAMPBELL ESTATES MHP | AZ0420019 | Groundwater | 450 | 29 |
| THIM UTILITY COMPANY 2 | AZ0410228 | Groundwater | 445 | 22 |
| CACTUS COUNTRY RV RESORT | AZ0420197 | Groundwater | 420 | 41 |
| PARK WATER COMPANY INC | AZ0411407 | Groundwater | 416 | 49 |
| DIAMOND GROVE MOBILE HOME ESTATES | AZ0420542 | Groundwater | 385 | 27 |
| LAZY C WATER SERVICE | AZ0410065 | Groundwater | 359 | 62 |
| FEDERAL CORRECTIONAL INST | AZ0410187 | Groundwater | 350 | 110 |
| BELLA CAPRI MHP | AZ0420445 | Groundwater | 342 | 25 |
| SALOME WATER COMPANY | AZ0415021 | Groundwater | 317 | 32 |
| THIM UTILITY COMPANY | AZ0410117 | Groundwater | 310 | 15 |
| LOS ARBOLES MOBILE HOME PARK | AZ0420175 | Groundwater | 303 | 11 |
| VALLE VERDE DEL NORTE | AZ0410152 | Groundwater | 300 | 28 |
| MESALAND WATER COMPANY | AZ0410074 | Groundwater | 294 | 47 |
| MT LEMMON DWID | AZ0410140 | Groundwater | 290 | 51 |
| DRAGOON WATER COMPANY | AZ0402015 | Groundwater | 283 | 21 |
| RIO VIEJO WATER | AZ0410011 | Groundwater | 272 | 9 |
| TIERRA LINDA HOA WATER COMPANY | AZ0410411 | Groundwater | 266 | 172 |
| RIO MERCADO WATER | AZ0410968 | Groundwater | 266 | 14 |
| LA CASITA WATER COMPANY 2 | AZ0410410 | Groundwater | 261 | 15 |
| SIERRITA MOUNTAIN WATER COOP | AZ0410208 | Groundwater | 258 | 17 |
| FAR HORIZONS MHP | AZ0420042 | Groundwater | 258 | 25 |
| THIM UTILITY COMPANY - WELL 9 | AZ0410206 | Groundwater | 254 | 13 |
| THIM WATER COMPANY 2 | AZ0410264 | Groundwater | 247 | 20 |
| COLDWATER CANYON 2 | AZ0413192 | Groundwater | 247 | 68 |
| DESERT SHORES RV MHP | AZ0420033 | Groundwater | 220 | 8 |
| RIO VISTA MOBILE HOME PARK | AZ0420487 | Groundwater | 217 | 23 |
| HALCYON ACRES WATER USERS ASSOCIATION | AZ0410057 | Groundwater | 215 | 5 |
| MARANA MUNICIPAL - TORTOLITA MOUNTAIN | AZ0410505 | Groundwater | 200 | 0 |
| CRESCENT MANOR MHP | AZ0420026 | Groundwater | 200 | 38 |
| CIBOLA WATER IMPROVEMENT DISTRICT | AZ0415123 | Surface Water | 197 | 273 |
| LA CASITA WATER COMPANY 1 | AZ0410409 | Groundwater | 174 | 6 |
| SONOITA VALLEY (SOUTH) WATER COMPANY | AZ0412005 | Groundwater | 169 | 72 |
| CASITAS DE CASTILIAN | AZ0420531 | Groundwater | 167 | 40 |
| HALCYON ACRES 2 | AZ0410058 | Groundwater | 164 | 25 |
| A PETERSEN WATER COMPANY | AZ0409032 | Groundwater | 160 | 28 |
| WILDFLOWER WATER COOP | AZ0410265 | Groundwater | 157 | 60 |
| VIA VERDE WEST MHP | AZ0420420 | Groundwater | 156 | 7 |
| MONTE VISTA WATER COMPANY | AZ0402043 | Groundwater | 150 | 81 |
| SAMALAYUCA IMPROVEMENT ASSOC | AZ0410101 | Groundwater | 150 | 16 |
| DESERT WATER COOP | AZ0410188 | Groundwater | 150 | 41 |
| NORTH LA CHOLLA MHP | AZ0420043 | Groundwater | 150 | 105 |
| RAINDANCE WATER COOP | AZ0410278 | Groundwater | 148 | 17 |
| CLOUD NINE WATER COMPANY | AZ0402009 | Groundwater | 143 | 26 |
| ORCHARD VALLEY MOBILE HOME PARK | AZ0420159 | Groundwater | 130 | 50 |
| EMPIRITA WATER COMPANY | AZ0402122 | Groundwater | 120 | 23 |
| COLDWATER CANYON 3 | AZ0413202 | Groundwater | 120 | 69 |
| MARANA MUNICIPAL - PALO VERDE | AZ0410136 | Groundwater | 118 | 11 |
| MOBILE HOME PROPERTIES | AZ0410319 | Groundwater | 114 | 43 |
| CATALINA VILLAGE | AZ0410219 | Groundwater | 107 | 83 |
| THIM UTILITY COMPANY - RANCHO VISTA | AZ0410351 | Groundwater | 105 | 15 |
| CROSSROADS PARK MHP | AZ0420096 | Groundwater | 100 | 10 |
| WELLS FARGO WATER COMPANY | AZ0410269 | Groundwater | 83 | 29 |
| METROPOLITAN DWID - LAZY B | AZ0410218 | Groundwater | 77 | 36 |
| CATALINA COUNTRY ESTATES | AZ0420500 | Groundwater | 77 | 11 |
| CANYON VISTA ESTATES | AZ0409091 | Groundwater | 75 | 19 |
| RIVERSIDE APARTMENTS | AZ0420129 | Groundwater | 75 | 18 |
| LAZY ACRES MHP | AZ0420176 | Groundwater | 75 | 10 |
| HIGH CHAPARRAL WATER COOP | AZ0410282 | Groundwater | 72 | 49 |
| CAROLANNE DRIVE HOA | AZ0420529 | Groundwater | 72 | 16 |
| DESERT SKY DWID | AZ0415122 | Groundwater | 70 | 308 |
| THIM UTILITY COMPANY - PARKIN | AZ0410250 | Groundwater | 69 | 5 |
| CAMMIES FOOTHILLS VISTA MHC | AZ0420575 | Groundwater | 62 | 25 |
| RANCHO SIERRITA WELL ASSOC | AZ0410286 | Groundwater | 55 | 41 |
| PICACHO PEAK WATER COMPANY | AZ0411038 | Groundwater | 55 | 42 |
| VERNON VALLEY WATER SYSTEM | AZ0401054 | Groundwater | 54 | 28 |
| SUMMIT WATER COOP | AZ0420595 | Groundwater | 53 | 48 |
| SIERRA COURT MHC LLC | AZ0420092 | Groundwater | 51 | 99 |
| PICO VISTA COMMUNITY WELL | AZ0410435 | Groundwater | 49 | 10 |
| SONOITA VALLEY (NORTH) WATER COMPANY | AZ0412308 | Groundwater | 49 | 25 |
| SUPERSTITION WATER COOP | AZ0410311 | Groundwater | 45 | 44 |
| KLAFTER WELL COOP | AZ0410400 | Groundwater | 45 | 21 |
| WILMOT WATER USERS GROUP | AZ0410402 | Groundwater | 30 | 13 |
| CORONADO FOREST DRIVE WATER COOP | AZ0420475 | Groundwater | 30 | 44 |
| GATOR WATER COMPANY | AZ0410445 | Groundwater | 29 | 16 |
| PALOMINAS WATER SEWER CO | AZ0402026 | Groundwater | 27 | 38 |
| SIETE CASAS JOINT VENTURE | AZ0410242 | Groundwater | 25 | 33 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.