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CONTAMINANT

Chromium (hexavalent)

FOUND

Exceeding guidelines

STATES DETECTED

50

serves

264 million

utilities detected

7,538

states detected

51

serves

222 million

utilities detected

5,939

Overview

Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

National Standard Exists

Health Concerns:

  • Cancer

  • Harm to the liver

  • Harm to the reproductive system

Want to remove
Chromium (hexavalent) from your water?

Try these filter technologies:

Reverse Osmosis, 

Ion Exchange, 

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Chromium (hexavalent) around the Country

UTILITIES REPORTING ABOVE HEALTH GUIDELINES UTILITIES WITH CONTAMINATION
State Utilities People Served Utilities People Served
California68938,615,40276745,095,892
Texas42516,441,90965721,420,449
New York22517,409,36228918,817,468
Florida22814,466,03830818,566,652
Illinois3908,968,3154599,588,922
Pennsylvania2118,653,6072569,515,051
Ohio2287,830,1732928,793,280
Georgia1378,227,2811468,453,259
New Jersey1616,784,9301988,087,572
North Carolina2916,171,1303847,890,992
Washington1897,310,9871957,452,780
Tennessee1605,571,2961776,461,121
Virginia1236,139,6921376,380,756
Arizona845,851,857906,037,227
Michigan1865,430,3051945,797,562
Colorado1072,287,5272085,571,247
Maryland362,622,476504,938,722
Massachusetts1343,164,3921824,831,949
Alabama1564,188,9841914,716,746
Missouri1273,716,8541504,000,552
Kentucky1082,913,8891663,644,380
South Carolina1543,058,3641763,419,410
Louisiana732,011,2281133,325,259
Indiana762,474,0111203,304,462
Oregon661,993,427862,975,699
Utah802,888,890812,897,757
Nevada182,889,362182,889,362
Wisconsin902,736,740992,861,254
Minnesota482,021,795652,613,890
Oklahoma971,698,0861572,599,339
Connecticut571,746,768722,516,395
Kansas862,065,1341172,183,489
Arkansas941,588,4981291,860,458
Iowa1401,616,9801871,820,694
New Mexico321,400,969341,434,694
Hawaii241,343,138241,343,138
Nebraska33854,493371,197,328
Idaho25987,756281,046,256
Mississippi18453,338531,002,791
West Virginia59809,99994986,369
Rhode Island13300,88728982,604
Delaware19693,89519693,895
District Of Columbia3667,3253667,325
South Dakota83532,32984546,420
New Hampshire35484,45738530,507
North Dakota17439,81717439,817
Maine12303,70520422,577
Montana24306,85649418,718
Alaska14323,17215331,097
Wyoming33208,97946284,773
Vermont2172,07233147,378

Utilities with the highest amounts of chromium (hexavalent), 2013-2023

ALL UTILITIES
LARGE UTILITIES
Utility Location Tests Average level People served
Norman*Norman, OK80 of 8039.3 ppb100,939
Colonial Oak Water Company Inc.Salinas, CA1 of 136.0 ppb198
Bonfire Village HotelSacramento, CA4 of 433.3 ppb30
City of Los BanosLos Banos, CA293 of 29332.9 ppb46,639
Wolf Creek Water and Sewer IdEden, UT1 of 131.0 ppb1,345
Kingman Municipal WaterKingman, AZ24 of 2430.0 ppb45,000
City of Buckeye Sonora - SundanceBuckeye, AZ8 of 829.0 ppb15,783
Epcor Water - Paradise Valley/ScottsdaleEl Mirage, AZ4 of 428.0 ppb14,107
Golden State Water Company (GSWC) - Florence/GrahamSanta Fe Springs, CA50 of 5127.8 ppb62,970
Santa Ynez Rancho Estates Mutual Water CompanySanta Ynez, CA2 of 227.0 ppb304
Valenzuela Water SystemHollister, CA2 of 225.0 ppb55
North Davis MeadowsWoodland, CA2 of 225.0 ppb314
City of Surprise - Mountain Vista*Surprise, AZ16 of 1623.5 ppb40,007
Woodstock RanchSanta Ynez, CA10 of 1023.0 ppb325
Joshua Basin Water DistrictJoshua Tree, CA5 of 522.2 ppb7,414
City Of DixonDixon, CA9 of 920.4 ppb11,784
City of KermanKerman, CA21 of 2119.9 ppb16,995
Oak Trail RanchSanta Ynez, CA1 of 119.0 ppb102
Valencia Water Company Town DivisionBuckeye, AZ15 of 1518.8 ppb5,068
SBNDO County Service Area 70JSan Bernardino, CA185 of 18518.1 ppb12,721
City of PattersonPatterson, CA61 of 6117.5 ppb23,304
MooreMoore, OK47 of 4716.9 ppb55,083
City of WoodlandWoodland, CA77 of 7716.5 ppb61,032
UC - DavisDavis, CA16 of 1616.3 ppb48,828
Mesquite Mutual Water CompanyCoachella, CA24 of 2416.1 ppb42
Coachella Water Authority*Coachella, CA24 of 2416.1 ppb42,554
Skyline Park & Service CompanySanta Ynez, CA2 of 216.0 ppb295
Coachella Valley Water District: I.d. No. 8Palm Desert, CA5 of 515.2 ppb4,600
MustangMustang, OK12 of 1215.1 ppb18,576
Goodyear Water DepartmentGoodyear, AZ20 of 2014.9 ppb50,001
Hidden Valley Lake Community Services DistrictHidden Valley Lake, CA64 of 6414.0 ppb6,235
Lancaster Water CompanyLancaster, CA45 of 4613.1 ppb80
60th Street Association Water SystemRosamond, CA4 of 413.0 ppb39
Myoma Dunes Mutual Water CompanyBermuda Dunes, CA48 of 4812.9 ppb8,948
City of Davis*Davis, CA67 of 9512.1 ppb67,217
Carver Tract Mutual Water CompanyIndio, CA1 of 112.0 ppb300
Baker Community Services DistrictBaker, CA8 of 911.8 ppb1,000
California Water Service Company Las LomasSalinas, CA237 of 23811.8 ppb2,083
PurcellPurcell, OK4 of 411.5 ppb6,693
San Joaquin River Club Inc.Tracy, CA8 of 811.3 ppb600
Rosamond CSDRosamond, CA14 of 1411.3 ppb17,516
Landale Mutual Water CompanyLancaster, CA1 of 111.0 ppb571
Madison Service DistrictMadison, CA1 of 111.0 ppb876
Epcor Water - Sun CityEl Mirage, AZ36 of 3610.7 ppb38,016
Californian Mobile Home ParkRoseville, CA5 of 510.7 ppb372
Averydale Mutual Water CompanyLancaster, CA8 of 810.4 ppb1,003
East Pasadena Water CompanyRosemead, CA16 of 1610.3 ppb9,949
Rancho Ynecita Mutual Water CompanyLos Olivos, CA3 of 310.1 ppb129
Epcor Water - Agua Fria*El Mirage, AZ49 of 5610.1 ppb80,959
Arizona Water Company - White TanksPhoenix, AZ49 of 5610.1 ppb18,858

* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Chromium (hexavalent), but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
Norman*Norman, OK80 of 8039.3 ppb100,939
City of Los BanosLos Banos, CA293 of 29332.9 ppb46,639
Kingman Municipal WaterKingman, AZ24 of 2430.0 ppb45,000
City of Buckeye Sonora - SundanceBuckeye, AZ8 of 829.0 ppb15,783
Epcor Water - Paradise Valley/ScottsdaleEl Mirage, AZ4 of 428.0 ppb14,107
Golden State Water Company (GSWC) - Florence/GrahamSanta Fe Springs, CA50 of 5127.8 ppb62,970
City of Surprise - Mountain Vista*Surprise, AZ16 of 1623.5 ppb40,007
City Of DixonDixon, CA9 of 920.4 ppb11,784
City of KermanKerman, CA21 of 2119.9 ppb16,995
SBNDO County Service Area 70JSan Bernardino, CA185 of 18518.1 ppb12,721
City of PattersonPatterson, CA61 of 6117.5 ppb23,304
MooreMoore, OK47 of 4716.9 ppb55,083
City of WoodlandWoodland, CA77 of 7716.5 ppb61,032
UC - DavisDavis, CA16 of 1616.3 ppb48,828
Coachella Water Authority*Coachella, CA24 of 2416.1 ppb42,554
MustangMustang, OK12 of 1215.1 ppb18,576
Goodyear Water DepartmentGoodyear, AZ20 of 2014.9 ppb50,001
City of Davis*Davis, CA67 of 9512.1 ppb67,217
Rosamond CSDRosamond, CA14 of 1411.3 ppb17,516
Epcor Water - Sun CityEl Mirage, AZ36 of 3610.7 ppb38,016
Epcor Water - Agua Fria*El Mirage, AZ49 of 5610.1 ppb80,959
Arizona Water Company - White TanksPhoenix, AZ49 of 5610.1 ppb18,858
City of Hollister*Hollister, CA40 of 4010.0 ppb23,358
City of El MirageEl Mirage, AZ35 of 3510.0 ppb39,884
California Water Service Company - DixonSan Jose, CA325 of 3809.86 ppb10,616
Liberty Water Lpsco*Litchfield Park, AZ24 of 249.83 ppb50,770
Pima UtilitiesSun Lakes, AZ12 of 129.63 ppb20,000
Mission Springs WDDesert Hot Springs, CA37 of 379.61 ppb43,223
Rio Linda/Alverta Community Water DistrictRio Linda, CA88 of 889.57 ppb15,404
USMC - 29 Palms29 Palms, CA156 of 1839.18 ppb17,033
Quartz Hill Water District*Quartz Hill, CA88 of 889.16 ppb19,100
City of Edmond - Arcadia Lake*Edmond, OK88 of 889.06 ppb79,408
YukonYukon, OK4 of 48.94 ppb22,498
Arizona Water Company - Apache JunctionPhoenix, AZ8 of 88.69 ppb62,055
Sunny Slope Water CompanyPasadena, CA266 of 2678.38 ppb25,252
Cal/Am Water Company - San MarinoRosemead, CA175 of 1758.36 ppb47,731
Indio Water AuthorityIndio, CA89 of 1028.14 ppb82,668
Los Angeles County WW District 4 & 34-LancasterAlhambra, CA38 of 388.02 ppb204,393
City of Kingsville*Kingsville, TX28 of 287.75 ppb26,213
City of Newman Water DepartmentNewman, CA21 of 237.71 ppb12,351
Los Angeles County WW District 40 Reg 38 Lake Los AngelesAlhambra, CA12 of 127.59 ppb12,620
Phelan Pinon Hills CSDPhelan, CA227 of 3057.56 ppb23,585
Twentynine Palms Water DistrictTwentynine Palms, CA86 of 947.55 ppb18,795
City of VacavilleElmira, CA73 of 807.23 ppb97,155
City of Watsonville*Watsonville, CA76 of 977.20 ppb65,231
Fruitridge Vista Water Company*Sacramento, CA62 of 647.04 ppb15,167
Cottonwood Municipal Water Cw1Cottonwood, AZ16 of 166.88 ppb11,014
Sunnyslope County Water District*Hollister, CA61 of 626.84 ppb23,499
Arizona Water Company - Pinal Valley*Phoenix, AZ38 of 386.82 ppb113,516
Coachella Valley Water District: Cove Community*Palm Desert, CA156 of 2096.69 ppb270,000

* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Chromium (hexavalent), but it likely has the contaminant in its water supply.

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