Know Your Environment. Protect Your Health.

Chromium (total)

Lancaster County Sanitary and Improvement District 3 - Holland

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.

 

4

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
20190.540 ppb220.502 ppb - 0.578 ppb
2020N/A00N/A
2021N/A00N/A
20221.30 ppb221.26 ppb - 1.33 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
2019-07-156221670.578 ppb
2019-07-156221680.502 ppb
2022-07-188100181.26 ppb
2022-07-188100191.33 ppb