Know Your Environment. Protect Your Health.

Chromium (total)

Woodstock Ranch

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
201817.0 ppb1117.0 ppb
201925.0 ppb2213.0 ppb - 37.0 ppb
202010.00 ppb1110.00 ppb
202116.0 ppb1116.0 ppb
202222.0 ppb2213.0 ppb - 31.0 ppb
202335.0 ppb1135.0 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
2018-06-14CA4200807_003_003-20180614075017.0 ppb
2019-03-27CA4200807_007_007-20190327091537.0 ppb
2019-09-19CA4200807_008_008-20190919095513.0 ppb
2020-06-04CA4200807_009_009-20200604081610.00 ppb
2021-03-02CA4200807_003_003-20210302115016.0 ppb
2022-02-08CA4200807_008_008-20220208091013.0 ppb
2022-02-08CA4200807_007_007-20220208094031.0 ppb
2023-01-19CA4200807_009_009-20230119091035.0 ppb