Know Your Environment. Protect Your Health.

Chromium (total)

Heritage Ranch Community Services 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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND30ND
2021ND30ND
2022ND40ND
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
2018-05-10CA4010012_001_001-201805101300ND
2018-05-10CA4010012_002_002-201805101306ND
2018-11-01CA4010012_002_002-201811011318ND
2018-11-01CA4010012_001_001-201811011307ND
2019-05-09CA4010012_001_001-201905091217ND
2019-05-09CA4010012_002_002-201905091240ND
2019-11-04CA4010012_002_002-201911041315ND
2019-11-04CA4010012_001_001-201911041310ND
2020-05-07CA4010012_001_001-202005071035ND
2020-05-07CA4010012_002_002-202005071053ND
2020-11-19CA4010012_001_001-202011191330ND
2021-06-10CA4010012_001_001-202106101322ND
2021-11-18CA4010012_002_002-202111181030ND
2021-11-18CA4010012_001_001-202111181020ND
2022-05-12CA4010012_001_001-202205120944ND
2022-05-12CA4010012_002_002-202205120953ND
2022-11-03CA4010012_001_001-202211031053ND
2022-11-03CA4010012_002_002-202211031059ND
2023-05-18CA4010012_002_002-202305180948ND
2023-05-18CA4010012_001_001-202305180931ND
2023-11-09CA4010012_001_001-202311091019ND
2023-11-09CA4010012_002_002-202311091028ND