Know Your Environment. Protect Your Health.

Chromium (total)

Sunnyhill Water Association

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
20181.20 ppb330.600 ppb - 2.10 ppb
2019N/A00N/A
2020N/A00N/A
20210.500 ppb110.500 ppb
2022ND20ND
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
2018-09-12180913-011IN2.10 ppb
2018-09-12180913-012IN0.900 ppb
2018-10-24181025-023IN0.600 ppb
2021-01-11IN-210112-0010.500 ppb
2022-10-12IN-221013-021ND
2022-10-12IN-221013-022ND