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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

United Water Cons District

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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89

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.750 ppb168ND - 2.00 ppb
20150.938 ppb167ND - 3.00 ppb
20161.25 ppb127ND - 3.00 ppb
2017ND150ND
2018ND130ND
2019ND170ND

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
2014-04-095867-001-11132.00 ppb
2014-04-095867-004-07331.000 ppb
2014-04-095867-007-08031.000 ppb
2014-04-095867-008-08482.00 ppb
2014-04-095867-009-09032.00 ppb
2014-04-095867-010-11001.000 ppb
2014-04-095867-013-10252.00 ppb
2014-04-095867-017-09171.000 ppb
2014-10-155867-010-0828ND
2014-10-155867-009-0845ND
2014-10-155867-001-1100ND
2014-10-155867-013-1000ND
2014-10-155867-008-0804ND
2014-10-155867-007-0748ND
2014-10-155867-004-0715ND
2014-12-235867-017-0730ND
2015-02-175867-026-0905ND
2015-04-145867-013-1050ND
2015-04-145867-017-0812ND
2015-04-145867-010-0842ND
2015-04-145867-008-0900ND
2015-04-145867-026-0728ND
2015-04-145867-007-0705ND
2015-04-145867-004-0742ND
2015-04-145867-001-1040ND
2015-10-195867-026-07202.00 ppb
2015-10-195867-017-10062.00 ppb
2015-10-195867-010-09202.00 ppb
2015-10-195867-001-11002.00 ppb
2015-10-195867-004-07382.00 ppb
2015-10-195867-007-07503.00 ppb
2015-10-195867-008-10502.00 ppb
2016-04-055867-007-07162.00 ppb
2016-04-055867-001-09522.00 ppb
2016-04-055867-004-07463.00 ppb
2016-04-055867-026-08002.00 ppb
2016-04-055867-017-08542.00 ppb
2016-04-055867-010-09062.00 ppb
2016-04-055867-008-08162.00 ppb
2016-10-275867-010-0810ND
2016-10-275867-001-0912ND
2016-10-275867-026-0748ND
2016-10-275867-007-0734ND
2016-10-275867-017-0800ND
2017-04-195867-010-1038ND
2017-04-195867-004-0836ND
2017-04-195867-026-0914ND
2017-04-195867-008-0816ND
2017-04-195867-007-0800ND
2017-04-195867-017-0926ND
2017-04-195867-001-1052ND
2017-10-315867-010-0744ND
2017-10-315867-004-0716ND
2017-10-315867-027-0954ND
2017-10-315867-026-0820ND
2017-10-315867-008-1124ND
2017-10-315867-007-0924ND
2017-10-315867-001-1230ND
2017-10-315867-017-1200ND
2018-04-175867-001-0956ND
2018-04-175867-007-1040ND
2018-04-175867-010-0856ND
2018-04-175867-026-0820ND
2018-04-175867-017-0843ND
2018-04-175867-027-0918ND
2018-04-175867-004-0749ND
2018-10-095867-007-0840ND
2018-10-095867-017-0927ND
2018-10-095867-026-0908ND
2018-10-095867-004-0818ND
2018-10-095867-027-1016ND
2018-11-215867-013-0828ND
2019-04-105867-004-0822ND
2019-04-105867-026-0908ND
2019-04-105867-001-0745ND
2019-04-105867-008-1040ND
2019-04-105867-027-1026ND
2019-04-105867-017-0924ND
2019-04-105867-007-0853ND
2019-04-105867-013-1014ND
2019-10-085867-004-0835ND
2019-10-085867-027-1050ND
2019-10-085867-026-0855ND
2019-10-085867-008-1010ND
2019-10-085867-007-0959ND
2019-10-085867-001-0755ND
2019-10-085867-010-1025ND
2019-10-085867-017-0945ND
2019-10-085867-013-0813ND