Know Your Environment. Protect Your Health.

Chromium (total)

Jordanelle Special Service 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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND30ND
2020ND20ND
20210.200 ppb31ND - 0.600 ppb
2022ND30ND
20230.850 ppb62ND - 2.90 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 Result
2018-06-05ND
2019-06-27ND
2019-06-27ND
2019-06-27ND
2020-08-03ND
2020-08-10ND
2021-06-29ND
2021-07-13ND
2021-10-190.600 ppb
2022-05-16ND
2022-06-01ND
2022-07-19ND
2023-05-24ND
2023-05-24ND
2023-06-05ND
2023-07-17ND
2023-08-302.90 ppb
2023-08-302.20 ppb