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EWG's Tap Water Database

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Arizona

  • 748 Utilities

  • Serving: 6,260,000

  • Data available: 2010-2015

  • Contaminants Found: 72

 

EWG's drinking water quality report for Arizona shows results of tests conducted by the water utilities in Arizona and provided to EWG by the Arizona Department of Environmental Quality.

LARGE UTILITIES
ALL UTILITIES WITH VIOLATIONS
LARGE UTILITIES WITH VIOLATIONS

Below are utilities in Arizona serving over 10,000 people, listed alphabetically. Click the "more" button below to get the full list of utilities serving over 10,000 people.

Large utilities in Arizona

UtilityLocationPeople
Served
Arizona Water Company - Apache JunctionPhoenix, AZ57,647
Arizona Water Company - LakesidePhoenix, AZ10,882
Arizona Water Company - OvergaardPhoenix, AZ10,426
Arizona Water Company - Pinal ValleyPhoenix, AZ88,019
Arizona Water Company - SedonaPhoenix, AZ12,191
Bella Vista City Water SystemRio Rico, AZ23,100
Bermuda Water Company IncBullhead City, AZ18,000
City of Apache JunctionApache Junction, AZ13,657
City of AvondaleAvondale, AZ79,335
City of Buckeye Sonora - SundanceBuckeye, AZ15,783
City of ChandlerChandler, AZ300,000
City of DouglasDouglas, AZ13,300
City of El MirageEl Mirage, AZ36,905
City of FlagstaffFlagstaff, AZ67,000
City of GlendaleGlendale, AZ180,000
City of Lake HavasuLake Havasu City, AZ54,610
City of MesaMesa, AZ466,000
City of NogalesNogales, AZ22,000
City of PeoriaPeoria, AZ124,500
City of PhoenixPhoenix, AZ1,500,000
City of PrescottPrescott, AZ43,217
City of SaffordSafford, AZ18,900
City of San LuisSan Luis, AZ27,800
City of ScottsdaleScottsdale, AZ230,000
City of Show LowShow Low, AZ15,716
City of SomertonSomerton, AZ15,000
City of Surprise - Mountain VistaSurprise, AZ40,615
City of TempeTempe, AZ165,000
City of TucsonTucson, AZ675,686
City of YumaYuma, AZ103,264
More

Utilities that accumulated/accrued the most violation points as of October 2015 to September 2018 in Arizona

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

UtilityLocationPeople
Served
Violation
Points
Alma RanchettesQueen Creek, AZ100120
Wellton, Town ofWellton, AZ2,882119
San Simon Domestic Water Improvement DistrictSan Simon, AZ31096
Bouse Worley Water SystemBouse, AZ19091
Sierra Pacific Mobile ManorTempe, AZ81686
Rio Verde Rv ParkCottonwood, AZ21385
Sun Leisure Estates Utilities CompanyYuma, AZ14376
Tacna Water Management CompanyYuma, AZ19272
Sun Valley Farms Unit ViSan Tan Valley, AZ60070
Wenden Domestic Water Improvement DistrictWenden, AZ47570
White Horse Ranch Owners AssociationPrescott, AZ29270
Villa Grande Domestic Water Improvement DistrictEloy, AZ35960
Kelvin Simmons Co-opKearny, AZ2551
Why Domestic Water Improvement DistrictAjo, AZ40050
Jones Co-op Water AssociationYuma, AZ3541
Citrus Park Water CompanyYuma, AZ4032
Cibola Mutual Water CompanyCibola, AZ16227
Yuma Lakes ResortParker, AZ2524
Mohawk Utility CompanyWellton, AZ30021
Brooke Water LLC - Parker DamBakersfield, AZ48321
Springerville, Town ofSpringerville, AZ1,97216
El Prado Water CompanyYuma, AZ35015
Oak Creek Water Company 1Sedona, AZ1,50015
Centennial Park Domestic Water Improvement DistrictColorado City, AZ1,30011
Ds Water CompanyDesert Springs, AZ24411
Saguaro Mobile Home ParkKearny, AZ3611
Beverly Gardens Trailer ParkPrescott, AZ12011
Greenfield RanchettesGilbert, AZ5311
Skyline Resort Rv ParkSan Tan Valley, AZ37510
Avalon Gardens Water SystemTubac, AZ10010

Large utilities that accumulated/accrued the most violation points as of October 2015 to September 2018 in Arizona

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

UtilityLocationPeople
Served
Violation
Points
Far West Water & Sewer IncYuma, AZ32,4257
City of NogalesNogales, AZ22,0005
Town of GilbertGilbert, AZ210,0005
City of Apache JunctionApache Junction, AZ13,6575
City of ChandlerChandler, AZ300,0002
City of PeoriaPeoria, AZ124,5002
City of TempeTempe, AZ165,0001
City of PrescottPrescott, AZ43,2171
Metropolitan DWIDTucson, AZ43,4331
USAF Davis Monthan AFBDmafb, AZ14,7751
Johnson UtilitiesScottsdale, AZ62,1581
Florence Water CompanyFlorence, AZ14,8801
City of SomertonSomerton, AZ15,0001

Contaminants found in Arizona above health guidelines

Found above health guidelinesFound
Contaminant# of UtilitiesPeople Served# of UtilitiesPeople Served

Total trihalomethanes (TTHMs)
3285,881,2433495,955,233

Chromium (hexavalent)
1485,448,3661535,617,430

Uranium
1585,002,5011625,042,841

Arsenic
2544,788,9352544,788,935

Bromate
112,837,195112,837,195

Radium-228
1132,619,3391183,337,088

Chlorite
102,599,975112,600,100

Radon
72,296,76372,296,763

Radium-226
2041,336,0542204,524,206

Perfluorooctane sulfonate (PFOS)
42972,67242972,672

Perfluorohexane sulfonate (PFHXS)
38928,20438928,204

Simazine
32756,64532756,645

Nitrate and nitrite
35631,4621594,629,244

Tetrachloroethylene (perchloroethylene)
5493,5095493,509

Nitrate
85403,9106736,120,364

Strontium
17269,0321545,617,966

Perfluorooctanoic acid (PFOA)
5233,2965233,296

1,2-Dibromo-3-chloropropane (DBCP)
5190,5256656,525

Chlorate
13155,4861365,313,752

Perfluoroheptanoic acid (PFHPA)
350,6144215,614

1,2,3-Trichloropropane
250,078250,078

Trichloroethylene
434,4885500,488

Vanadium
220,8511535,612,648

Barium
18,2201434,242,278

Dibromochloromethane
12,90012,900

Bromodichloromethane
12,90012,900

Di(2-ethylhexyl) phthalate
11,740443,438

Vinyl chloride
11,38511,385

Cadmium
22512251

Bromoform
11901190

Thallium
130227,830

Contaminants found in Arizona above legal limits

Contaminant# of UtilitiesPeople Served

Arsenic
1916,482

Nitrate
105,322

Total trihalomethanes (TTHMs)
44,644

Nitrate and nitrite
53,630

Fluoride
3516

Uranium
4298

Cadmium
1203

Radium, combined (-226 & -228)
2181