Know Your Environment. Protect Your Health.

Chromium (total)

City of Chubbuck

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.

 

7

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
20198.60 ppb54ND - 13.0 ppb
2020N/A00N/A
2021N/A00N/A
202211.0 ppb228.00 ppb - 14.0 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
2019-01-16II9011090112.0 ppb
2019-03-28II903204019.00 ppb
2019-04-10II904086019.00 ppb
2019-06-04II9060490113.0 ppb
2019-07-10II90712501ND
2022-07-11II207109018.00 ppb
2022-07-27II2074070114.0 ppb