Know Your Environment. Protect Your Health.

Chromium (total)

Shady Harbor Fire District

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
2018ND50ND
2019N/A00N/A
2020N/A00N/A
20211.25 ppb43ND - 2.00 ppb
2022N/A00N/A
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
2018-04-241801832-03_WL68ND
2018-04-241801832-01_WL68ND
2018-04-241801832-04_WL68ND
2018-04-241801832-05_WL68ND
2018-04-241801832-02_WL68ND
2021-04-122101744-01_WL682.00 ppb
2021-04-122101744-02_WL68ND
2021-04-122101744-03_WL682.00 ppb
2021-04-122101744-04_WL681.000 ppb