Know Your Environment. Protect Your Health.

Chromium (total)

China Lake Naval Air Weapons Station

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
2018N/A00N/A
2019N/A00N/A
2020ND40ND
2021ND10ND
2022ND10ND
2023ND60ND

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
2020-09-16CA1510703_002_002-202009160820ND
2020-09-16CA1510703_017_017-202009161000ND
2020-09-16CA1510703_013_013-202009160900ND
2020-09-16CA1510703_004_004-202009160845ND
2021-06-15CA1510703_015_015-202106150945ND
2022-06-28CA1510703_043_043-202206280900ND
2023-11-07CA1510703_004_004-202311070717ND
2023-11-07CA1510703_002_002-202311070901ND
2023-11-07CA1510703_015_015-202311070807ND
2023-11-07CA1510703_017_017-202311070732ND
2023-11-07CA1510703_013_013-202311070824ND
2023-11-07CA1510703_043_043-202311070917ND