Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Chromium (hexavalent)

West Valley Water District

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).

MORE ABOUT THIS CONTAMINANT

 

201

Samples

0

Samples exceeding legal limit (MCL)

148

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.13 ppb6955ND - 3.10 ppb
20151.09 ppb4427ND - 2.90 ppb
20161.21 ppb4630ND - 3.00 ppb
20171.49 ppb2117ND - 2.90 ppb
20181.55 ppb109ND - 2.90 ppb
20191.33 ppb1110ND - 1.90 ppb

ppb = parts per billion

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

All test results

Date Lab ID Result
2014-03-044C05053-09A1.30 ppb
2014-03-044C05053-05A0.410 ppb
2014-03-044C05053-01A1.90 ppb
2014-03-044C05053-07A0.330 ppb
2014-03-044C05053-11A1.50 ppb
2014-03-044C05053-03A1.90 ppb
2014-03-054C06045-01A1.10 ppb
2014-03-054C06044-01A1.30 ppb
2014-03-054C06042-01A1.50 ppb
2014-03-054C06043-01A1.70 ppb
2014-03-064C07048-01A0.220 ppb
2014-03-064C07037-01A0.220 ppb
2014-03-064C07025-01A0.200 ppb
2014-03-064C07031-01A0.600 ppb
2014-03-114C12075-01A1.10 ppb
2014-03-114C12074-01A1.10 ppb
2014-03-114C12073-01A1.60 ppb
2014-03-114C12076-01A0.780 ppb
2014-03-114C12077-01A1.10 ppb
2014-03-114C12078-01A1.80 ppb
2014-06-244F25021-01A0.940 ppb
2014-06-244F25019-01A0.390 ppb
2014-08-263761-036-1035ND
2014-09-094I12031-07A0.960 ppb
2014-09-094I12031-05A0.790 ppb
2014-09-094I12031-03A0.550 ppb
2014-09-094I12031-01A0.960 ppb
2014-09-164I17068-07A2.70 ppb
2014-09-164I17068-03A0.930 ppb
2014-09-164I17068-05A2.60 ppb
2014-09-164I17068-01A0.280 ppb
2014-09-174I19024-03A0.390 ppb
2014-09-174I19024-01A0.330 ppb
2014-09-183761-010-10251.30 ppb
2014-09-183761-024-1015ND
2014-09-223761-008-10051.50 ppb
2014-09-223761-011-09351.70 ppb
2014-09-223761-032-09052.50 ppb
2014-09-223761-034-09502.60 ppb
2014-09-233761-005-10001.40 ppb
2014-09-233761-018-1155ND
2014-09-233761-030-11151.60 ppb
2014-09-233761-042-10102.00 ppb
2014-09-243761-002-0818ND
2014-09-243761-033-0850ND
2014-09-243761-043-0836ND
2014-09-243761-045-09351.60 ppb
2014-09-243761-047-0910ND
2014-09-253761-012-10281.80 ppb
2014-09-253761-031-10002.70 ppb
2014-09-253761-037-0932ND
2014-12-023761-008-11251.70 ppb
2014-12-033761-011-09451.70 ppb
2014-12-033761-032-09302.60 ppb
2014-12-033761-034-09202.70 ppb
2014-12-053761-005-13401.60 ppb
2014-12-053761-042-13472.20 ppb
2014-12-083761-031-12553.10 ppb
2014-12-113761-002-09301.20 ppb
2014-12-113761-010-15501.10 ppb
2014-12-113761-018-1043ND
2014-12-113761-024-1505ND
2014-12-113761-030-14101.70 ppb
2014-12-113761-033-0950ND
2014-12-113761-043-0940ND
2014-12-113761-045-10302.00 ppb
2014-12-113761-047-0920ND
2014-12-163761-012-14502.00 ppb
2014-12-173761-037-0920ND
2015-03-043761-018-0855ND
2015-03-053761-030-09401.40 ppb
2015-03-053761-047-1045ND
2015-03-113761-002-10001.10 ppb
2015-03-113761-018-0948ND
2015-03-113761-033-1015ND
2015-03-113761-043-1025ND
2015-03-113761-045-09302.10 ppb
2015-03-173761-031-11102.60 ppb
2015-03-193761-012-13501.80 ppb
2015-03-243761-010-08551.20 ppb
2015-03-243761-024-0840ND
2015-06-183761-005-10001.30 ppb
2015-06-183761-042-10101.90 ppb
2015-09-093761-011-09481.70 ppb
2015-09-093761-032-10172.40 ppb
2015-09-093761-034-09152.60 ppb
2015-09-103761-005-09201.40 ppb
2015-09-103761-042-06261.80 ppb
2015-09-143761-010-10401.20 ppb
2015-09-163761-031-11452.60 ppb
2015-09-173761-002-0900ND
2015-09-173761-018-09201.10 ppb
2015-09-173761-024-1105ND
2015-09-173761-045-09401.80 ppb
2015-09-233761-030-09181.40 ppb
2015-09-233761-033-0915ND
2015-09-233761-043-0935ND
2015-09-233761-047-0950ND
2015-09-243761-012-10071.90 ppb
2015-12-023761-002-11391.20 ppb
2015-12-023761-010-11551.40 ppb
2015-12-023761-018-1050ND
2015-12-033761-024-0900ND
2015-12-033761-043-1038ND
2015-12-033761-047-1033ND
2015-12-083761-005-13001.40 ppb
2015-12-083761-033-0935ND
2015-12-083761-042-13201.90 ppb
2015-12-093761-032-09252.60 ppb
2015-12-093761-034-08502.90 ppb
2015-12-153761-012-11001.80 ppb
2015-12-153761-037-0950ND
2015-12-213761-030-09401.30 ppb
2016-01-053761-018-0855ND
2016-01-063761-002-09251.10 ppb
2016-01-063761-005-10451.40 ppb
2016-01-063761-031-10052.70 ppb
2016-01-063761-042-10351.70 ppb
2016-01-073761-030-10401.40 ppb
2016-01-073761-033-09231.000 ppb
2016-01-073761-043-0930ND
2016-01-073761-047-0940ND
2016-01-133761-037-1100ND
2016-01-143761-010-11491.30 ppb
2016-01-143761-024-1202ND
2016-01-203761-032-09322.50 ppb
2016-03-073761-034-10502.80 ppb
2016-04-053761-034-10302.80 ppb
2016-04-123761-002-16121.10 ppb
2016-04-123761-031-10363.00 ppb
2016-04-123761-032-11502.50 ppb
2016-04-123761-033-16041.000 ppb
2016-04-123761-043-1534ND
2016-04-123761-047-1542ND
2016-04-193761-010-11371.20 ppb
2016-04-193761-024-1124ND
2016-04-203761-012-15511.80 ppb
2016-04-213761-018-1022ND
2016-04-213761-030-14121.30 ppb
2016-04-213761-037-1052ND
2016-04-223761-042-13152.10 ppb
2016-07-063761-002-15401.20 ppb
2016-07-063761-008-12452.00 ppb
2016-07-123761-043-1030ND
2016-07-133761-018-1416ND
2016-07-133761-024-0923ND
2016-07-133761-030-09451.30 ppb
2016-07-133761-032-11242.50 ppb
2016-07-133761-042-10502.00 ppb
2016-07-203761-031-10163.00 ppb
2016-07-203761-033-07521.10 ppb
2016-07-203761-047-0742ND
2016-07-213761-010-08461.40 ppb
2016-07-213761-037-0808ND
2016-07-273761-012-07421.90 ppb
2016-07-283761-034-07562.80 ppb
2016-08-193761-045-0926ND
2016-10-053761-008-07452.20 ppb
2016-10-253761-030-13351.40 ppb
2017-01-093761-008-10412.60 ppb
2017-01-183761-030-08401.50 ppb
2017-04-063761-008-10301.90 ppb
2017-04-123761-030-08201.50 ppb
2017-07-103761-010-07451.30 ppb
2017-07-103761-024-0810ND
2017-07-113761-030-07451.50 ppb
2017-07-123761-002-08101.30 ppb
2017-07-123761-008-08002.00 ppb
2017-07-123761-018-1100ND
2017-07-123761-032-09052.50 ppb
2017-07-123761-033-09101.20 ppb
2017-07-123761-037-1045ND
2017-07-123761-043-09001.10 ppb
2017-07-173761-012-08561.90 ppb
2017-07-243761-042-07502.00 ppb
2017-07-253761-047-0750ND
2017-07-263761-031-07502.90 ppb
2017-07-273761-034-07502.60 ppb
2017-10-163761-008-08052.10 ppb
2017-10-163761-030-08301.40 ppb
2018-01-113761-008-12301.80 ppb
2018-01-173761-030-08351.20 ppb
2018-04-043761-008-13301.90 ppb
2018-04-113761-030-07451.30 ppb
2018-06-213761-034-11002.90 ppb
2018-06-213761-039-0000ND
2018-07-113761-030-08101.40 ppb
2018-07-243761-008-08451.80 ppb
2018-10-023761-008-11301.90 ppb
2018-10-223761-030-08071.30 ppb
2019-01-103761-030-13231.30 ppb
2019-01-243761-008-10201.90 ppb
2019-04-053761-008-10301.70 ppb
2019-04-093761-030-08391.30 ppb
2019-06-043761-005-07381.20 ppb
2019-07-113761-030-06501.30 ppb
2019-07-153761-008-10001.70 ppb
2019-07-243761-055-17301.30 ppb
2019-08-303761-045-1240ND
2019-10-153761-008-09001.60 ppb
2019-10-163761-030-06191.30 ppb