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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Ward II Water 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.

MORE ABOUT THIS CONTAMINANT

 

86

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.193 ppb2015ND - 0.320 ppb
2014ND60ND
2015ND200ND
2016ND40ND
2017ND60ND
2018ND260ND
2019ND40ND

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
2013-08-2635106288009AM0.300 ppb
2013-08-2635106288021AM0.300 ppb
2013-08-2635106288015AM0.270 ppb
2013-08-2635106288003AM0.270 ppb
2013-08-2635106288013AMND
2013-08-2635106288017AM0.320 ppb
2013-08-2635106288011AM0.240 ppb
2013-08-2635106288005AM0.210 ppb
2013-08-2635106288007AM0.250 ppb
2013-08-2635106288001AM0.230 ppb
2013-08-2835106288027AM0.210 ppb
2013-08-2835106288023AM0.230 ppb
2013-08-2835106288033AM0.300 ppb
2013-08-2835106288031AM0.220 ppb
2013-08-2835106288025AM0.240 ppb
2013-09-1635108510013AMND
2013-09-1635108510017AMND
2013-09-1635108510015AM0.260 ppb
2013-10-2235113145001AMND
2013-10-2235113145003AMND
2014-06-24AD92612ND
2014-06-24AD92622ND
2014-06-24AD92617ND
2014-06-24AD92622ND
2014-06-24AD92617ND
2014-06-24AD92612ND
2015-07-2035198654001ND
2015-07-2035198654001ND
2015-09-2135208876004ND
2015-09-2135208876004ND
2015-09-2135208876003ND
2015-09-2135208876002ND
2015-09-2135208876001ND
2015-09-2135208876005ND
2015-09-2135208876003ND
2015-09-2135208876005ND
2015-09-2135208876002ND
2015-09-2135208876001ND
2015-09-2935209950002ND
2015-09-2935209950004ND
2015-09-2935209950003ND
2015-09-2935209950002ND
2015-09-2935209950001ND
2015-09-2935209950004ND
2015-09-2935209950003ND
2015-09-2935209950001ND
2016-03-0135232777002ND
2016-03-0135232777002ND
2016-03-0135232777001ND
2016-03-0135232777001ND
2017-06-19AE15004ND
2017-06-19AE15000ND
2017-06-19AE14992ND
2017-06-19AE15000ND
2017-06-19AE15004ND
2017-06-19AE14992ND
2018-05-02AE21703ND
2018-05-02AE21727ND
2018-05-02AE21703ND
2018-05-02AE21727ND
2018-06-06AE21815ND
2018-06-06AE21818ND
2018-06-06AE21821ND
2018-06-06AE21812ND
2018-06-06AE21809ND
2018-06-06AE21809ND
2018-06-06AE21812ND
2018-06-06AE21815ND
2018-06-06AE21818ND
2018-06-06AE21821ND
2018-06-25AE21988ND
2018-06-25AE21992ND
2018-06-25AE21996ND
2018-06-25AE22000ND
2018-06-25AE21984ND
2018-06-25AE21984ND
2018-06-25AE21988ND
2018-06-25AE21992ND
2018-06-25AE21996ND
2018-06-25AE22000ND
2018-09-10B1804157-001ND
2018-09-10B1804157-001ND
2019-07-24B1903193-001ND
2019-07-2435485209001ND
2019-07-24B1903193-001ND
2019-07-2435485209001ND