Know Your Environment. Protect Your Health.

Chromium (total)

New Water Supply Corporation

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
2018ND30ND
2019N/A00N/A
2020ND10ND
20211.73 ppb32ND - 3.10 ppb
2022N/A00N/A
2023ND10ND

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
2018-06-06Q1822507010ND
2018-06-06Q1822507011ND
2018-06-06Q1822507012ND
2020-11-09Q2043745018ND
2021-04-15Q21097630172.10 ppb
2021-04-15Q21097630183.10 ppb
2021-04-15Q2109763019ND
2023-06-15Q2322767009ND