Know Your Environment. Protect Your Health.

Chromium (total)

City Of Modesto - Del Rio

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019N/A00N/A
2020ND20ND
2021ND30ND
2022N/A00N/A
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
2018-05-02CA5010029_004_004-201805020835ND
2018-05-14CA5010029_010_010-201805140830ND
2018-08-01CA5010029_002_002-201808011242ND
2020-05-06CA5010029_001_001-202005061150ND
2020-05-13CA5010029_010_010-202005131047ND
2021-05-04CA5010029_010_010-202105040910ND
2021-05-05CA5010029_002_002-202105050950ND
2021-05-05CA5010029_004_004-202105051055ND
2023-05-03CA5010029_001_001-202305030820ND