Know Your Environment. Protect Your Health.

Chromium (total)

Solano Irrigation District - Pleasant Hills Ranch

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND30ND
2020ND20ND
2021ND10ND
2022ND20ND
2023ND10ND

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
2018-05-10CA4810025_004_005-201805101000ND
2018-05-10CA4810025_004_004-201805101015ND
2018-08-23CA4810025_004_005-201808230945ND
2018-08-23CA4810025_004_004-201808230920ND
2018-11-15CA4810025_004_005-201811151110ND
2018-11-15CA4810025_004_004-201811151120ND
2019-03-12CA4810025_002_002-201903120905ND
2019-03-18CA4810025_004_005-201903181000ND
2019-03-18CA4810025_001_001-201903181000ND
2020-03-10CA4810025_002_002-202003100815ND
2020-03-17CA4810025_004_005-202003170905ND
2021-03-23CA4810025_004_005-202103231040ND
2022-03-15CA4810025_004_005-202203151100ND
2022-03-15CA4810025_002_002-202203150737ND
2023-03-23CA4810025_004_005-202303230940ND