Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Chromium (hexavalent)

Status: No national drinking water standard exists

 

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).

2013-2019:

FOUND
FOUND ABOVE HEALTH GUIDELINES

50

states detected

8,654

utilities detected

251 million

people served

50

states over health guideline

8,168

utilities over health guideline

233 million

people served over health guideline

Health concerns for chromium (hexavalent)

Cancer

Harm to the liver

Harm to the reproductive system

State and national drinking water standards and health guidelines

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

States reporting chromium (hexavalent) in drinking water

UTILITIES REPORTING ABOVE HEALTH GUIDELINES UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served UtilitiesPeople Served
California1,34835,806,0691,38637,522,992
Texas67418,224,68470020,375,471
New York29718,412,66431319,054,703
Florida28615,509,66133517,929,282
Illinois4719,715,7214619,878,993
Pennsylvania2819,331,3672989,660,188
Ohio2717,782,7753078,442,556
New Jersey2017,535,0182148,135,519
Georgia1707,817,0761717,909,380
North Carolina3616,546,4804047,673,973
Tennessee1995,469,1352026,257,835
Virginia1536,175,3291546,188,700
Arizona945,590,794995,760,676
Michigan1945,437,9041975,745,301
Colorado1564,362,9321895,530,339
Washington2035,467,2382045,491,602
Massachusetts1704,206,6651914,886,885
Alabama2264,691,1642334,861,735
Maryland504,813,437534,853,964
Missouri1563,750,2971613,972,570
Kentucky2123,731,6412253,961,014
South Carolina1853,397,7501843,514,306
Indiana1142,746,4701333,266,076
Louisiana1062,388,1221253,249,627
Oregon822,745,196882,846,019
Wisconsin942,725,790972,800,289
Utah822,684,945842,701,287
Oklahoma1461,877,2841802,677,935
Nevada182,622,646182,622,646
Connecticut722,478,740732,514,807
Minnesota552,139,544682,479,688
Kansas1462,253,2371422,260,051
Arkansas1431,826,4891521,912,239
Iowa1611,621,3041811,693,615
New Mexico371,388,760401,425,930
Hawaii271,357,254271,357,254
Nebraska351,083,141361,129,488
West Virginia106979,26697990,346
Mississippi23525,01251937,027
Idaho26867,81628912,315
Rhode Island16332,85232904,271
Delaware14688,56915696,546
District Of Columbia3664,5723664,572
New Hampshire39517,82940528,829
South Dakota83421,26784434,913
Alaska18431,97418431,974
Maine17417,57819420,453
North Dakota34427,86320407,547
Montana36356,01542396,575
Wyoming48262,66446271,060
Vermont2995,81634151,073
MORE
LESS

Filtering technologies that reduce chromium (hexavalent)

reverse osmosis icon

Reverse Osmosis

ion exchange icon

Ion Exchange

Utilities with the highest amounts of chromium (hexavalent), 2013-2019

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Norman*Norman, OK80 of 8039.3 ppb72,928
City of Los BanosLos Banos, CA291 of 29131.8 ppb37,168
Aptos Ridge Mutual Water CompanyWatsonville, CA10 of 1030.7 ppb50
Kingman Municipal WaterKingman, AZ24 of 2430.0 ppb45,000
City of Buckeye Sonora - SundanceBuckeye, AZ8 of 829.0 ppb15,783
Santa Ynez Rancho Estates Mutual Water CompanySanta Ynez, CA12 of 1228.1 ppb294
Epcor Water - Paradise Valley/ScottsdaleYoungtown, AZ4 of 428.0 ppb12,000
Paradise Rd. Ws #21Salinas, CA11 of 1125.9 ppb48
North Davis MeadowsWoodland, CA2 of 225.0 ppb314
City of Surprise - Mountain Vista*Surprise, AZ16 of 1623.5 ppb31,649
Harbor View WaCastroville, CA11 of 1123.5 ppb75
Volta Community SDLos Banos, CA14 of 1423.1 ppb150
Joshua Basin Water DistrictJoshua Tree, CA70 of 7022.9 ppb9,534
Paradise Lake Mutual Water CompanySalinas, CA24 of 2422.8 ppb180
City of KermanKerman, CA81 of 8122.0 ppb14,068
West Park PropertiesCrescent City, CA5 of 522.0 ppb112
Antelope Valley Mobile EstatesRosamond, CA15 of 1520.8 ppb60
Woodstock Property Owners AssociationSanta Ynez, CA36 of 3920.4 ppb350
Strawberry Rd. Ws #06Royal Oaks, CA10 of 1020.1 ppb150
First Mutual Water SystemRosamond, CA14 of 1419.7 ppb35
Royal Oak Place WsWatsonville, CA20 of 2019.5 ppb60
City of PattersonPatterson, CA119 of 11919.3 ppb20,560
Valencia Water Company Town DivisionBuckeye, AZ15 of 1518.8 ppb5,068
Rolling Acres Mutual Water CompanyDavis, CA7 of 718.7 ppb40
Monterey Bay AcademyWatsonville, CA17 of 1718.6 ppb400
SBNDO County Service Area 70JVictorville, CA139 of 13918.5 ppb10,111
Valenzuela Water SystemHollister, CA16 of 1718.3 ppb55
Golden Meadows Community Services DistrictRed Bluff, CA4 of 418.3 ppb102
Coachella Water AuthorityCoachella, CA113 of 11317.8 ppb41,904
Amezcua - Garcia WaterThermal, CA9 of 917.7 ppb316
Desmond Rd. Ws #03Castroville, CA10 of 1017.6 ppb55
Galindo Housing FacilityBermuda Dunes, CA10 of 1017.3 ppb50
City Of DixonDixon, CA75 of 7517.2 ppb8,593
Oak Trail Ranch Mutual WaterBuellton, CA17 of 1717.1 ppb105
Yolo County Housing AuthorityWoodland, CA14 of 1417.0 ppb432
MooreMoore, OK47 of 4716.9 ppb55,083
Green Acres WaCastroville, CA10 of 1016.7 ppb50
City of Davis*Davis, CA195 of 21816.6 ppb67,298
Fisherman's Bend Mobile Home ParkNewman, CA13 of 1316.5 ppb80
City of WoodlandWoodland, CA84 of 8516.2 ppb56,464
Dunnigan Water WorksPaso Robles, CA30 of 5916.2 ppb400
Hidden Valley WaRoyal Oaks, CA6 of 616.2 ppb51
Thermal Mutual Water CompanyThermal, CA10 of 1016.0 ppb100
Coachella Valley Water District: I.d. No. 8Palm Desert, CA29 of 2915.9 ppb5,059
San Andreas Mutual Water CompanyAptos, CA30 of 3015.7 ppb350
UC - DavisDavis, CA26 of 2715.2 ppb40,185
MustangMustang, OK12 of 1215.1 ppb15,435
Dolan Rd. Mutual Water CompanyMoss Landing, CA10 of 1015.1 ppb120
Goodyear Water Department*Goodyear, AZ20 of 2014.9 ppb50,001
Vwc Buckeye Division Sweetwater 2Buckeye, AZ20 of 2014.9 ppb90

* 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 ppb72,928
City of Los BanosLos Banos, CA291 of 29131.8 ppb37,168
Kingman Municipal WaterKingman, AZ24 of 2430.0 ppb45,000
City of Buckeye Sonora - SundanceBuckeye, AZ8 of 829.0 ppb15,783
Epcor Water - Paradise Valley/ScottsdaleYoungtown, AZ4 of 428.0 ppb12,000
City of Surprise - Mountain Vista*Surprise, AZ16 of 1623.5 ppb31,649
City of KermanKerman, CA81 of 8122.0 ppb14,068
City of PattersonPatterson, CA119 of 11919.3 ppb20,560
SBNDO County Service Area 70JVictorville, CA139 of 13918.5 ppb10,111
Coachella Water AuthorityCoachella, CA113 of 11317.8 ppb41,904
MooreMoore, OK47 of 4716.9 ppb55,083
City of Davis*Davis, CA195 of 21816.6 ppb67,298
City of WoodlandWoodland, CA84 of 8516.2 ppb56,464
UC - DavisDavis, CA26 of 2715.2 ppb40,185
MustangMustang, OK12 of 1215.1 ppb15,435
Goodyear Water Department*Goodyear, AZ20 of 2014.9 ppb50,001
Rosamond CSDRosamond, CA37 of 3713.3 ppb16,618
City of VacavilleElmira, CA116 of 11711.5 ppb96,735
City of WatsonvilleWatsonville, CA108 of 11611.2 ppb65,739
Epcor Water - Sun CityYoungtown, AZ36 of 3610.7 ppb38,016
USMC - 29 Palms29 Palms, CA133 of 15210.5 ppb28,760
Los Angeles County WW District 4 & 34-LancasterAlhambra, CA205 of 20610.4 ppb180,131
Epcor Water - Agua Fria*Youngtown, AZ49 of 5610.1 ppb80,959
Rio Linda/Alverta Community Water DistrictRio Linda, CA143 of 14310.0 ppb13,386
City of HollisterHollister, CA80 of 9310.0 ppb36,108
City of El MirageEl Mirage, AZ35 of 3510.0 ppb39,884
Los Angeles County WW District 40 Reg 38 Lake Los AngelesAlhambra, CA70 of 709.88 ppb13,600
Liberty Water Lpsco*Avondale, AZ24 of 249.83 ppb50,045
Pima UtilitiesSun Lakes, AZ12 of 129.63 ppb20,000
Quartz Hill Water District*Quartz Hill, CA82 of 829.30 ppb22,000
City of Edmond - Arcadia Lake*Arcadia, OK88 of 889.06 ppb79,408
East Pasadena Water CompanyPasadena, CA6 of 68.95 ppb10,978
YukonYukon, OK4 of 48.94 ppb22,498
Mission Springs WDDesert Hot Springs, CA44 of 448.94 ppb34,626
Arizona Water Company - Apache JunctionPhoenix, AZ8 of 88.69 ppb57,647
Twentynine Palms Water DistrictTwentynine Palms, CA95 of 1028.50 ppb18,600
Fruitridge Vista Water CompanySacramento, CA113 of 1198.45 ppb15,000
Phelan Pinon Hills CSDPhelan, CA175 of 2188.40 ppb24,000
Sunnyslope County Water DistrictHollister, CA212 of 2128.01 ppb19,189
Sunny Slope Water CompanyPasadena, CA45 of 457.83 ppb32,427
City of Newman Water DepartmentNewman, CA68 of 757.82 ppb10,586
City of Kingsville*Kingsville, TX28 of 287.75 ppb29,947
Cal/Am Water Company - San MarinoRosemead, CA141 of 1427.65 ppb40,804
Indio Water AuthorityIndio, CA995 of 1,0437.39 ppb77,780
City of ArcadiaArcadia, CA46 of 467.38 ppb57,639
Coachella Valley Water District: Cove Community*Palm Desert, CA419 of 6837.28 ppb198,544
City of Banning*Banning, CA158 of 2386.93 ppb29,965
City of California CityCalifornia City, CA40 of 406.89 ppb14,212
Cottonwood Municipal Water Cw1Cottonwood, AZ16 of 166.88 ppb10,895
Arizona Water Company - Pinal Valley*Phoenix, AZ38 of 386.82 ppb88,019

* 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.