Know Your Environment. Protect Your Health.

Chromium (total)

Four Way Special Utility 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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
20195.40 ppb115.40 ppb
20201.27 ppb32ND - 2.70 ppb
2021N/A00N/A
20228.00 ppb118.00 ppb
20230.533 ppb31ND - 1.60 ppb

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
2019-06-04Q19311890155.40 ppb
2020-06-17Q20246440062.70 ppb
2020-08-11Q20317970141.10 ppb
2020-08-11Q2031797015ND
2022-03-07Q22076190038.00 ppb
2023-04-24Q2315229007ND
2023-06-05Q23208260271.60 ppb
2023-06-05Q2320826028ND