Know Your Environment. Protect Your Health.

Chromium (total)

Lexington & Joseph Harp Correctional Institution

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
201826.7 ppb4417.6 ppb - 30.6 ppb
2019N/A00N/A
202038.2 ppb1138.2 ppb
202131.7 ppb1131.7 ppb
2022N/A00N/A
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
2018-10-12SDWA-1311237-0029.1 ppb
2018-10-12SDWA-1311238-0030.6 ppb
2018-10-12SDWA-1311239-0029.6 ppb
2018-10-12SDWA-1311240-0017.6 ppb
2020-09-09SDWA-1507424-0038.2 ppb
2021-03-11SDWA-1559763-0031.7 ppb