Know Your Environment. Protect Your Health.

Chromium (total)

Bois D Arc Municipal Utility District

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.

 

5

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
20193.35 ppb223.10 ppb - 3.60 ppb
2020N/A00N/A
20212.00 ppb112.00 ppb
20228.50 ppb227.50 ppb - 9.50 ppb
2023N/A00N/A

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
2019-09-04Q19620330073.60 ppb
2019-09-04Q19620330083.10 ppb
2021-01-26Q21018730072.00 ppb
2022-07-05Q22186010099.50 ppb
2022-07-05Q22186010107.50 ppb