Know Your Environment. Protect Your Health.

Chromium (total)

City of Auburn

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.

 

27

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019N/A00N/A
2020N/A00N/A
2021ND70ND
2022ND70ND
2023ND70ND

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
2018-08-15ND
2018-08-15ND
2018-08-15ND
2018-08-15ND
2018-08-15ND
2018-08-15ND
2021-08-044159330ND
2021-08-044216833ND
2021-08-044216833ND
2021-08-044159328ND
2021-08-044173036ND
2021-08-044173037ND
2021-08-044173039ND
2022-08-044366173ND
2022-08-044366174ND
2022-08-044364199ND
2022-08-044364200ND
2022-08-044364200ND
2022-08-044364193ND
2022-08-044364198ND
2023-08-034511142ND
2023-08-034511136ND
2023-08-034511142ND
2023-08-034511128ND
2023-08-034511146ND
2023-08-094511064ND
2023-08-094511063ND