Know Your Environment. Protect Your Health.

Chromium (total)

Baker Community Services 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
201820.5 ppb6611.0 ppb - 37.0 ppb
2019N/A00N/A
2020N/A00N/A
202120.0 ppb1120.0 ppb
202214.0 ppb1114.0 ppb
2023N/A00N/A

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
2018-10-22CA3600022_006_006-20181022082115.0 ppb
2018-10-22CA3600022_005_005-20181022081037.0 ppb
2018-10-22CA3600022_001_001-20181022074118.0 ppb
2018-10-22CA3600022_004_004-20181022080111.0 ppb
2018-10-22CA3600022_002_002-20181022074719.0 ppb
2018-10-22CA3600022_003_003-20181022075423.0 ppb
2021-11-17CA3600022_001_001-20211117071220.0 ppb
2022-12-08CA3600022_003_003-20221208103014.0 ppb