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EWG's Tap Water Database — 2019 UPDATE

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Arizona

  • 746 Utilities

  • Serving: 6,435,000

  • Data available: 2012-2017

  • Contaminants Found: 74

 

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 SystemSierra Vista, AZ20,045
Bermuda Water Company IncFort Mohave, AZ18,000
City of Apache JunctionApache Junction, AZ13,657
City of AvondaleAvondale, AZ83,001
City of Buckeye Sonora - SundanceBuckeye, AZ15,783
City of ChandlerChandler, AZ247,328
City of DouglasDouglas, AZ13,300
City of El MirageEl Mirage, AZ36,905
City of FlagstaffFlagstaff, AZ67,000
City of GlendalePhoenix, AZ234,766
City of Lake HavasuLake Havasu City, AZ54,610
City of MesaMesa, AZ466,000
City of NogalesRio Rico, AZ22,000
City of PeoriaPeoria, AZ135,975
City of PhoenixPhoenix, AZ1,579,000
City of PrescottPrescott, AZ43,217
City of SaffordThatcher, AZ18,900
City of San LuisSan Luis, AZ27,800
City of ScottsdaleScottsdale, AZ230,000
City of Show LowShow Low, AZ17,139
City of SomertonSomerton, AZ15,818
City of Surprise - Mountain VistaSurprise, AZ31,649
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 April 2016 to March 2019 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
Mohawk Valley School DistrictRoll, AZ220203
Wellton, Town ofWellton, AZ2,882169
Copper Mountain Ranch CfdCasa Grande, AZ909155
Fishers Landing ResortYuma, AZ402133
Cibola Mutual Water CompanyChibola, AZ162125
Papago Butte Domestic Water Improvement DistrictMaricopa, AZ500113
Sierra Pacific Mobile ManorYuma, AZ816112
Ranch Water Service Inc.Kingman, AZ135110
Far West Water & Sewer IncYuma, AZ32,425105
Bouse Worley Water SystemBouse, AZ142104
Tacna Water Management CompanyYuma, AZ200104
White Horse Ranch Owners AssociationPrescott, AZ292100
Rio Verde Rv ParkCottonwood, AZ3298
Katherine Landing DwtpBoudler City, AZ1,30091
Brooke Water LLC - Parker DamBakersfield, AZ49090
Lake Verde Water CompanyCamp Verde, AZ12587
Cienega Water Company Inc.Parker, AZ10882
City of NogalesRio Rico, AZ22,00078
Sun Valley Farms Unit ViSan Tan Valley, AZ60078
Maricopa Mountain Domestic Water Improvement District 1Maricopa, AZ45077
Truxton Canyon Water CompanyKingman, AZ2,13977
Beaver Valley Water CompanyPayson, AZ15075
Cameron Trading PostChandler,, AZ1,25670
Yuma Lakes ResortParker, AZ73267
Brooke Water LLC - Marina VillageBakersfield, AZ56065
Brooke Water LLC - Holiday HarborBakersfield, AZ56562
Jacob Lake LodgeFredonia, AZ50059
Valencia Water Company Town DivisionBuckeye, AZ5,06857
Yucca Water AssociationYucca, AZ25053
Crown King Water CompanyGlendale, AZ20349

Large utilities that accumulated/accrued the most violation points as of April 2016 to March 2019 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, AZ32,425105
City of NogalesRio Rico, AZ22,00078
City of Show LowShow Low, AZ17,13935
City of Apache JunctionApache Junction, AZ13,65734
City of PeoriaPeoria, AZ135,97528
U.S. Air Force Luke Air Force BaseGlendale, AZ10,70819
Community WC of Green ValleyGreen Valley, AZ21,49018
Goodyear Water DepartmentGoodyear, AZ50,00117
City of San LuisSan Luis, AZ27,80017
City of PrescottPrescott, AZ43,21716
Pueblo Del Sol Water CompanySierra Vista, AZ12,80415
City of TempeTempe, AZ165,00015
USAF Davis Monthan AFBDmafb, AZ14,77513
City of SaffordThatcher, AZ18,90012
City of FlagstaffFlagstaff, AZ67,00012
Lago Del Oro Water CompanySun Lakes, AZ16,44512
Florence Water CompanyFlorence, AZ14,88011
City of GlendalePhoenix, AZ234,76611
Town of PaysonPayson, AZ17,68210
Grand Canyon National ParkGrand Canyon, AZ15,2889
Epcor Water - Chaparral CityYoungtown, AZ26,0268
Global Water - Santa Cruz Water CompanyMaricopa, AZ17,0058
Cottonwood Municipal Water Cw1Cottonwood, AZ11,2657
City of SomertonSomerton, AZ15,8187
Vistancia Public Water SystemPeoria, AZ10,2637
Metropolitan DWIDTucson, AZ44,9987
City of Surprise - Mountain VistaSurprise, AZ31,6496
Bella Vista City Water SystemSierra Vista, AZ20,0455
Epcor Water - AnthemYoungtown, AZ25,3025
Arizona Water Company - SedonaPhoenix, AZ12,1913

Contaminants found in Arizona above health guidelines

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

Nitrate
6776,304,0126946,351,979

Total trihalomethanes (TTHMs)
4166,269,5354196,286,139

Arsenic
4106,004,9964106,004,996

Chromium (hexavalent)
955,570,0751005,739,957

Uranium
1025,084,8071055,136,855

Radium, combined (-226 & -228)
2664,871,4562735,646,791

Nitrate and nitrite
2373,536,3002423,541,991

Bromate
72,707,88572,707,885

Chlorite
92,227,856102,294,856

1,2-Dibromo-3-chloropropane (DBCP)
6669,3196669,319

Tetrachloroethylene (perchloroethylene)
11666,15112702,481

Radon
5562,8665562,866

Strontium
14288,6291015,740,086

Perfluorooctane sulfonate (PFOS)
6266,8636266,863

Perfluorooctanoic acid (PFOA)
5238,8175238,817

Perfluorohexane sulfonate (PFHXS)
4221,1354221,135

Dibromochloromethane
6172,1906172,190

Chlorate
8157,554865,424,561

Bromodichloromethane
5144,3905144,390

Chloroform
4141,2454141,245

Bromoform
4141,2454141,245

Perfluoroheptanoic acid (PFHPA)
356,1354221,135

1,2,3-Trichloropropane
256,006256,006

Trichloroethylene
350,24181,192,965

Vanadium
220,8511005,734,768

Cadmium
720,367720,367

Thallium
217,169344,969

Barium
28,4403755,965,914

Vinyl chloride
11,38511,385

Styrene
18132920

Di(2-ethylhexyl) phthalate
2630331,115,039

Carbon tetrachloride
14001400

Antimony
1290875,492

Beryllium
150150

Contaminants found in Arizona above legal limits