Know Your Environment. Protect Your Health.

Chromium (total)

Tecumseh, City of

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
2018ND10ND
2019ND10ND
20200.620 ppb21ND - 1.24 ppb
20210.258 ppb21ND - 0.516 ppb
20221.55 ppb111.55 ppb
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
2018-04-30543461ND
2019-04-23603087ND
2020-01-08650929ND
2020-10-137026421.24 ppb
2021-01-13716591ND
2021-04-127275540.516 ppb
2022-04-187927811.55 ppb
2023-01-24841083ND
2023-10-10891296ND