Know Your Environment. Protect Your Health.

Chromium (total)

Mansfield Water System

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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND20ND
2020ND10ND
2021ND40ND
2022ND30ND
2023ND70ND

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
2018-04-0335384985001ND
2018-04-0335384985001ND
2018-04-1935387645001ND
2018-04-1935387645001ND
2019-03-1335454725001ND
2019-03-1335454725001ND
2020-02-03B2000555-001ND
2021-03-03B2101021-001ND
2021-03-31B2101620-001ND
2021-08-18B2104128-001ND
2021-12-09B2106616-001ND
2022-02-22B2200830-001ND
2022-05-19B2202493-001ND
2022-11-09B2205453-001ND
2023-02-07B2300548-001ND
2023-06-07B2302408-001ND
2023-08-21B2303429-001ND
2023-10-09B2304510-001ND
2023-10-09B2304510-002ND
2023-10-09B2304510-003ND
2023-11-20B2305057-001ND