Know Your Environment. Protect Your Health.

Chromium (total)

Valley Utilities Water Company Glendale

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
201810.5 ppb448.90 ppb - 12.0 ppb
2019N/A00N/A
2020N/A00N/A
20219.75 ppb229.50 ppb - 10.00 ppb
20227.80 ppb117.80 ppb
202310.00 ppb1110.00 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
2018-03-01201803010276I12.0 ppb
2018-03-01201803010277I11.0 ppb
2018-03-07201803070704I9.90 ppb
2018-03-07201803070705I8.90 ppb
2021-03-03202103040011I9.50 ppb
2021-03-03202103040012I10.00 ppb
2022-02-02202202030108I7.80 ppb
2023-02-02380-36417-310.00 ppb