Know Your Environment. Protect Your Health.

Chromium (total)

City of Idalou

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
20182.70 ppb112.70 ppb
20192.33 ppb331.80 ppb - 3.20 ppb
2020N/A00N/A
20217.10 ppb117.10 ppb
20223.23 ppb332.20 ppb - 3.90 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
2018-03-21Q18114860032.70 ppb
2019-01-30Q19044760021.80 ppb
2019-04-10Q19144180102.00 ppb
2019-09-11Q19639500083.20 ppb
2021-06-03Q21144420067.10 ppb
2022-02-16Q22057040023.90 ppb
2022-02-16Q22057040043.60 ppb
2022-04-28Q22128150012.20 ppb