Know Your Environment. Protect Your Health.

Chromium (total)

Tesoro Viejo Master Mwc, Inc.

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.

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND110ND
2021ND40ND
2022ND30ND
2023ND40ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-08-15CA2010017_002_002-201808151055ND
2018-12-06CA2010017_006_006-201812061040ND
2018-12-12CA2010017_001_001-201812121045ND
2019-05-15CA2010017_001_001-201905151345ND
2019-06-12CA2010017_006_006-201906121015ND
2019-08-21CA2010017_002_002-201908210955ND
2020-02-05CA2010017_006_006-202002051000ND
2020-02-19CA2010017_006_006-202002190915ND
2020-03-03CA2010017_006_006-202003031015ND
2020-03-03CA2010017_003_003-202003031020ND
2020-03-04CA2010017_006_006-202003041000ND
2020-03-04CA2010017_003_003-202003041030ND
2020-03-05CA2010017_006_006-202003051020ND
2020-03-05CA2010017_003_003-202003051025ND
2020-06-03CA2010017_002_002-202006031215ND
2020-06-09CA2010017_001_001-202006090845ND
2020-06-15CA2010017_002_002-202006151100ND
2021-02-03CA2010017_006_006-202102031045ND
2021-02-17CA2010017_006_006-202102171035ND
2021-06-09CA2010017_001_001-202106090845ND
2021-06-28CA2010017_002_002-202106280955ND
2022-02-16CA2010017_006_006-202202160920ND
2022-06-08CA2010017_001_001-202206080930ND
2022-07-06CA2010017_002_002-202207060900ND
2023-02-13CA2010017_002_002-202302130630ND
2023-02-14CA2010017_006_006-202302141040ND
2023-06-05CA2010017_001_001-202306051040ND
2023-06-20CA2010017_001_001-202306200755ND