Know Your Environment. Protect Your Health.

Chromium (total)

Averydale 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.

 

8

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
20205.50 ppb42ND - 11.0 ppb
2021N/A00N/A
2022N/A00N/A
20235.50 ppb42ND - 11.0 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
2020-07-21CA1910023_001_001-20200721132511.0 ppb
2020-07-21CA1910023_003_003-202007211304ND
2020-07-21CA1910023_004_004-202007211315ND
2020-07-21CA1910023_006_006-20200721133411.0 ppb
2023-07-18CA1910023_001_001-20230718134911.0 ppb
2023-07-18CA1910023_003_003-202307181338ND
2023-07-18CA1910023_004_004-202307181340ND
2023-07-18CA1910023_006_006-20230718135511.0 ppb