Know Your Environment. Protect Your Health.

Chromium (total)

Best Road Mutual Water Company

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.

 

4

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
20206.25 ppb224.20 ppb - 8.30 ppb
2021N/A00N/A
20222.30 ppb112.30 ppb
20231.70 ppb111.70 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
2020-07-27CA3500823_003_003-2020072706258.30 ppb
2020-07-27CA3500823_002_002-2020072708404.20 ppb
2022-06-08CA3500823_002_002-2022060809482.30 ppb
2023-06-20CA3500823_003_003-2023062010251.70 ppb