Know Your Environment. Protect Your Health.

Chromium (total)

Galva, City of

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.

 

9

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
2019N/A00N/A
20200.350 ppb41ND - 1.40 ppb
2021ND20ND
2022N/A00N/A
20231.77 ppb331.40 ppb - 2.10 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
2020-02-041318638ND
2020-02-041318636ND
2020-02-1013240491.40 ppb
2020-09-281568500ND
2021-12-202075993ND
2021-12-212077551ND
2023-01-2324371531.40 ppb
2023-01-2324371541.80 ppb
2023-01-2324371122.10 ppb