Know Your Environment. Protect Your Health.

Chromium (total)

Palm Ranch Irrigation 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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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
2018-04-03CA1910103_013_013-201804030803ND
2019-11-07CA1910103_015_015-201911070900ND
2020-06-16CA1910103_013_013-202006160617ND
2021-09-28CA1910103_002_002-202109280710ND
2021-09-28CA1910103_001_001-202109280728ND
2021-09-28CA1910103_007_007-202109280804ND
2021-11-02CA1910103_013_013-202111020709ND
2022-10-04CA1910103_015_015-202210040701ND
2023-01-17CA1910103_002_002-202301170728ND
2023-01-17CA1910103_007_007-202301170653ND
2023-01-17CA1910103_001_001-202301170719ND
2023-01-17CA1910103_015_015-202301170705ND