Know Your Environment. Protect Your Health.

Chromium (total)

Woodlake, City Of

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
2019N/A00N/A
2020ND30ND
2021ND50ND
2022N/A00N/A
2023ND20ND

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
2018-09-20CA5410020_006_006-201809201220ND
2018-09-20CA5410020_004_004-201809201250ND
2018-09-20CA5410020_005_005-201809201240ND
2018-09-20CA5410020_007_007-201809201230ND
2018-09-20CA5410020_008_008-201809201210ND
2020-09-15CA5410020_010_010-202009151144ND
2020-09-15CA5410020_009_009-202009151138ND
2020-11-19CA5410020_010_010-202011191140ND
2021-08-31CA5410020_004_004-202108311030ND
2021-08-31CA5410020_006_006-202108311045ND
2021-08-31CA5410020_005_005-202108311010ND
2021-08-31CA5410020_008_008-202108311109ND
2021-08-31CA5410020_007_007-202108311055ND
2023-08-15CA5410020_009_009-202308151110ND
2023-08-15CA5410020_010_010-202308151100ND