Know Your Environment. Protect Your Health.

Chromium (total)

Lakeview Ranchettes

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
20191.10 ppb111.10 ppb
20204.00 ppb114.00 ppb
2021N/A00N/A
20228.10 ppb118.10 ppb
20231.30 ppb111.30 ppb

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
2019-03-27Q19125500011.10 ppb
2020-11-18Q20457000064.00 ppb
2022-08-08Q22227420028.10 ppb
2023-11-13Q23483910061.30 ppb