Know Your Environment. Protect Your Health.

Chromium (total)

Bethany Special 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.

 

9

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
20192.80 ppb551.70 ppb - 6.30 ppb
2020N/A00N/A
2021N/A00N/A
20228.53 ppb446.50 ppb - 10.00 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
2019-02-07Q19057670021.90 ppb
2019-02-07Q19057670031.90 ppb
2019-02-07Q19057670081.70 ppb
2019-02-07Q19057670092.20 ppb
2019-12-10Q19795720046.30 ppb
2022-10-19Q22318230118.90 ppb
2022-10-19Q22318230128.70 ppb
2022-10-19Q223182301310.00 ppb
2022-10-19Q22318230146.50 ppb