Know Your Environment. Protect Your Health.

Chromium (total)

Jackson Water Supply Corporation

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
20194.20 ppb333.10 ppb - 5.10 ppb
2020N/A00N/A
20211.40 ppb111.40 ppb
20220.800 ppb32ND - 1.30 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
2018-12-05Q1849735010ND
2019-06-04Q19312590044.40 ppb
2019-06-04Q19312590055.10 ppb
2019-06-04Q19312590063.10 ppb
2021-01-20Q21014570141.40 ppb
2022-04-05Q2210384001ND
2022-04-05Q22103840021.10 ppb
2022-07-25Q22209780061.30 ppb