Know Your Environment. Protect Your Health.

Chromium (total)

Allendale Water Department

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20185.22 ppb332.97 ppb - 6.46 ppb
20192.94 ppb220.696 ppb - 5.19 ppb
20203.57 ppb221.82 ppb - 5.31 ppb
20210.717 ppb330.655 ppb - 0.811 ppb
20220.563 ppb110.563 ppb
20230.756 ppb110.756 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
2018-07-168070628-016.46 ppb
2018-07-178070712-022.97 ppb
2018-07-178070712-016.23 ppb
2021-04-081040421-060.684 ppb
2021-04-081040421-010.811 ppb
2021-04-081040421-040.655 ppb