Know Your Environment. Protect Your Health.

Chromium (total)

Sfpuc-pleasanton Wells

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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
2018-06-18CA0110018_004_004-201806181217ND
2018-06-18CA0110018_005_005-201806181151ND
2018-06-18CA0110018_007_007-201806181235ND
2019-06-17CA0110018_005_005-201906170900ND
2019-06-26CA0110018_004_004-201906261235ND
2020-06-16CA0110018_005_005-202006160922ND
2020-06-16CA0110018_007_007-202006161010ND
2020-06-16CA0110018_004_004-202006160834ND
2021-06-23CA0110018_005_005-202106231035ND
2022-06-14CA0110018_004_004-202206140920ND
2022-06-14CA0110018_005_005-202206140840ND
2022-06-14CA0110018_007_007-202206140945ND
2023-06-22CA0110018_004_004-202306220911ND
2023-09-14CA0110018_005_005-202309140950ND