Know Your Environment. Protect Your Health.

Chromium (total)

Blaine

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019N/A00N/A
2020ND20ND
2021ND40ND
2022ND30ND
2023ND20ND

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
2018-02-2818B1345-02ND
2020-08-3120H2390-02ND
2020-08-3120H2390-03ND
2021-02-0321B0180-01ND
2021-08-0621H0525-03ND
2021-08-0621H0525-04ND
2021-10-2621J1368-01ND
2022-09-2122I1864-01ND
2022-09-3022I2368-01ND
2022-09-3022I2368-02ND
2023-08-1823H2092-01ND
2023-09-1523I0864-01ND