Know Your Environment. Protect Your Health.

Chromium (total)

Marais Des Cygnes Public Utility Authority

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.90 ppb111.90 ppb
20191.90 ppb111.90 ppb
20201.40 ppb111.40 ppb
20211.30 ppb111.30 ppb
20222.00 ppb112.00 ppb
20231.10 ppb111.10 ppb

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
2018-05-079666461.90 ppb
2019-05-0711577871.90 ppb
2020-05-0513699471.40 ppb
2021-05-0418298941.30 ppb
2022-05-0222470632.00 ppb
2023-05-0924977561.10 ppb