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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Desert Water Agency

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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83

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.03 ppb3126ND - 3.40 ppb
2015ND10ND
2016ND280ND
2017N/A00N/A
2018ND20ND
2019ND210ND

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
2014-03-17201403190408AM2.40 ppb
2014-03-17201403190393AMND
2014-03-17201403190395AM0.290 ppb
2014-03-17201403190406AM3.40 ppb
2014-03-17201403190416AM2.00 ppb
2014-03-17201403190389AM0.310 ppb
2014-03-17201403190391AM0.380 ppb
2014-03-17201403190414AM2.00 ppb
2014-03-17201403190412AM2.40 ppb
2014-03-17201403190410AM0.310 ppb
2014-03-17201403190404AM0.800 ppb
2014-06-16201406180476AMND
2014-06-16201406180482AM0.380 ppb
2014-06-16201406180478AM0.420 ppb
2014-06-16201406180480AMND
2014-06-253761-060-1045ND
2014-10-06201410071188AM2.30 ppb
2014-10-06201410071173AMND
2014-10-06201410071175AM0.610 ppb
2014-10-06201410071169AM0.750 ppb
2014-10-06201410071171AM0.590 ppb
2014-10-06201410071163AM1.10 ppb
2014-10-07201410071120AM2.60 ppb
2014-10-07201410071118AM0.550 ppb
2014-10-07201410071114AM1.10 ppb
2014-10-07201410071116AM3.40 ppb
2014-10-07201410071122AM2.10 ppb
2014-12-16201412170217AM0.300 ppb
2014-12-16201412170219AM0.250 ppb
2014-12-16201412170215AM0.720 ppb
2014-12-16201412170213AM0.410 ppb
2015-09-233761-047-1000ND
2016-05-043761-043-1030ND
2016-05-043761-060-0935ND
2016-05-113761-026-1125ND
2016-05-113761-022-1045ND
2016-05-113761-015-1015ND
2016-05-183761-030-1100ND
2016-05-183761-029-1030ND
2016-06-083761-044-0945ND
2016-06-083761-024-1015ND
2016-06-153761-033-0000ND
2016-06-223761-008-0945ND
2016-06-223761-017-1145ND
2016-06-223761-018-1115ND
2016-06-223761-046-1030ND
2016-06-293761-040-1130ND
2016-07-133761-020-1200ND
2016-07-133761-025-0930ND
2016-07-133761-010-1115ND
2016-07-203761-039-1110ND
2016-07-213761-031-1025ND
2016-07-273761-027-1015ND
2016-08-173761-038-1100ND
2016-08-173761-034-0950ND
2016-09-073761-028-1100ND
2016-09-073761-032-0930ND
2016-09-073761-047-1010ND
2016-09-293761-045-0925ND
2016-09-293761-019-0935ND
2018-07-113761-034-1000ND
2018-07-113761-037-0745ND
2019-05-244790-060-1345ND
2019-05-244790-031-0730ND
2019-05-244790-030-0955ND
2019-05-244790-029-1410ND
2019-05-244790-043-0930ND
2019-06-194790-046-1110ND
2019-06-194790-026-1300ND
2019-06-194790-044-1150ND
2019-06-194790-033-1430ND
2019-06-194790-040-1000ND
2019-07-244790-031-1030ND
2019-07-244790-025-1000ND
2019-07-244790-039-0730ND
2019-07-254790-024-0200ND
2019-08-064790-034-0745ND
2019-08-064790-038-1020ND
2019-08-294790-032-1105ND
2019-08-294790-045-0940ND
2019-08-294790-019-1025ND
2019-08-294790-047-0740ND
2019-10-174790-027-0645ND