Know Your Environment. Protect Your Health.

Chromium (total)

White River Municipal Water District

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
2019ND10ND
20204.30 ppb21ND - 8.60 ppb
20212.00 ppb112.00 ppb
2022ND10ND
20231.65 ppb221.40 ppb - 1.90 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
2018-02-06Q1804613002ND
2019-02-12Q1906201002ND
2020-03-09Q2008467004ND
2020-09-15Q20365160018.60 ppb
2021-02-23Q21045380022.00 ppb
2022-03-14Q2208563002ND
2023-02-09Q23052260021.90 ppb
2023-08-17Q23346820011.40 ppb