Know Your Environment. Protect Your Health.

Chromium (total)

Travis Air Force Base Water Treatment Plant - Vallejo

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20185.10 ppb21ND - 10.2 ppb
20193.06 ppb51ND - 15.3 ppb
20206.60 ppb51ND - 33.0 ppb
2021ND50ND
20220.967 ppb31ND - 2.90 ppb
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
2018-09-10CA4810015_001_001-201809101227ND
2018-10-09CA4810015_003_003-20181009075010.2 ppb
2019-01-07CA4810015_003_003-201901070825ND
2019-04-02CA4810015_003_003-201904020745ND
2019-07-01CA4810015_003_003-20190701080515.3 ppb
2019-09-12CA4810015_001_001-201909121115ND
2019-10-08CA4810015_003_003-201910080900ND
2020-01-07CA4810015_003_003-202001070855ND
2020-04-01CA4810015_003_003-202004010820ND
2020-07-13CA4810015_003_003-202007130945ND
2020-09-14CA4810015_001_001-202009141102ND
2020-10-05CA4810015_003_003-20201005083533.0 ppb
2021-01-11CA4810015_003_003-202101110850ND
2021-04-01CA4810015_003_003-202104010821ND
2021-07-07CA4810015_003_003-202107070820ND
2021-09-13CA4810015_001_001-202109131133ND
2021-10-04CA4810015_003_003-202110040805ND
2022-01-05CA4810015_003_003-2022010509062.90 ppb
2022-07-06CA4810015_003_003-202207060830ND
2022-09-12CA4810015_001_001-202209121111ND
2023-01-10CA4810015_003_003-202301100815ND
2023-09-11CA4810015_001_001-202309111259ND