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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

City of Riverbank

Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.

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95

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20133.84 ppb20203.00 ppb - 4.90 ppb
20141.24 ppb155ND - 5.20 ppb
20152.37 ppb2114ND - 4.90 ppb
2016ND120ND
2017ND100ND
2018ND80ND
2019ND90ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.

ppb = parts per billion

All test results

Date Lab ID Result
2013-07-24A3G1603-39A4.90 ppb
2013-07-24A3G1603-11A4.30 ppb
2013-07-24A3G1603-09A3.30 ppb
2013-07-24A3G1603-15A3.40 ppb
2013-07-24A3G1603-13A3.30 ppb
2013-07-24A3G1603-03A4.00 ppb
2013-07-24A3G1603-01A3.40 ppb
2013-07-24A3G1603-07A3.00 ppb
2013-07-24A3G1603-05A4.30 ppb
2013-07-24A3G1603-37A3.40 ppb
2013-07-24A3G1603-25A4.70 ppb
2013-07-24A3G1603-35A4.00 ppb
2013-07-24A3G1603-27A3.10 ppb
2013-07-24A3G1603-21A4.60 ppb
2013-07-24A3G1603-29A4.10 ppb
2013-07-24A3G1603-33A3.20 ppb
2013-07-24A3G1603-23A4.10 ppb
2013-07-24A3G1603-31A4.00 ppb
2013-10-18A3J0927-01A3.40 ppb
2013-10-18A3J0927-03A4.30 ppb
2014-01-14A4A0434-35A2.10 ppb
2014-01-14A4A0434-37A3.10 ppb
2014-01-14A4A0434-33A3.10 ppb
2014-01-22A4A1423-04A5.20 ppb
2014-01-22A4A1423-06A5.10 ppb
2014-10-145810-012-1045ND
2014-10-145810-002-1025ND
2014-10-145810-004-1000ND
2014-10-205810-007-1020ND
2014-10-205810-010-1050ND
2014-10-205810-003-1000ND
2014-10-235810-008-1300ND
2014-10-235810-009-1330ND
2014-12-115810-006-1350ND
2014-12-115810-005-1245ND
2015-05-04A5D2327-09A3.20 ppb
2015-05-04A5D2327-13A3.50 ppb
2015-05-04A5D2327-11A4.90 ppb
2015-05-04A5D2327-15A3.50 ppb
2015-05-04A5D2327-05A3.40 ppb
2015-05-04A5D2327-01A3.70 ppb
2015-05-04A5D2327-03A4.00 ppb
2015-05-04A5D2327-23A2.50 ppb
2015-05-04A5D2327-07A2.90 ppb
2015-05-04A5D2327-19A4.00 ppb
2015-05-04A5D2327-27A4.40 ppb
2015-05-04A5D2327-29A3.60 ppb
2015-05-04A5D2327-25A2.90 ppb
2015-05-04A5D2327-21A3.20 ppb
2015-11-125810-012-1000ND
2015-12-235810-007-0950ND
2015-12-285810-002-1024ND
2015-12-285810-003-1300ND
2015-12-285810-004-1042ND
2015-12-285810-005-1000ND
2015-12-285810-010-1100ND
2016-02-085810-006-1220ND
2016-02-085810-008-1050ND
2016-10-055810-002-1037ND
2016-10-055810-012-1025ND
2016-10-055810-006-1000ND
2016-10-065810-004-0810ND
2016-10-065810-005-0901ND
2016-10-065810-007-0930ND
2016-10-105810-010-0910ND
2016-10-105810-003-0925ND
2016-10-105810-009-1400ND
2016-10-105810-008-0844ND
2017-12-135810-008-1345ND
2017-12-135810-002-1300ND
2017-12-135810-005-1330ND
2017-12-135810-009-1403ND
2017-12-135810-004-1220ND
2017-12-145810-010-1057ND
2017-12-145810-007-1041ND
2017-12-145810-006-0922ND
2017-12-145810-003-1110ND
2017-12-145810-012-0940ND
2018-10-115810-009-1125ND
2018-10-115810-002-1025ND
2018-10-115810-012-1100ND
2018-10-115810-010-1450ND
2018-10-115810-004-0940ND
2018-10-115810-005-1320ND
2018-10-115810-008-1420ND
2018-10-115810-007-1350ND
2019-10-165810-012-1140ND
2019-10-215810-009-1211ND
2019-10-215810-003-1405ND
2019-10-215810-008-1137ND
2019-10-215810-006-1040ND
2019-10-215810-010-1439ND
2019-10-225810-004-0931ND
2019-10-225810-002-1334ND
2019-10-225810-007-1023ND