Know Your Environment. Protect Your Health.

Chromium (total)

Cws - Lower Bodfish Water System

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.

 

44

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND40ND
2020ND70ND
2021N/A00N/A
20224.24 ppb16161.80 ppb - 6.50 ppb
20231.54 ppb1611ND - 3.10 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
2018-03-13CA1510056_013_013-201803131215ND
2019-04-09CA1510056_013_013-201904090923ND
2019-04-09CA1510056_008_008-201904090943ND
2019-04-09CA1510056_022_022-201904090916ND
2019-04-09CA1510056_010_010-201904091110ND
2020-01-22CA1510056_008_008-202001221010ND
2020-01-22CA1510056_010_010-202001221021ND
2020-03-17CA1510056_013_013-202003171100ND
2020-03-23CA1510056_022_022-202003231058ND
2020-05-06CA1510056_013_013-202005061305ND
2020-06-08CA1510056_013_013-202006081214ND
2020-08-05CA1510056_013_013-202008051048ND
2022-03-14CA1510056_013_013-2022031410304.40 ppb
2022-04-06CA1510056_022_022-2022040609305.40 ppb
2022-04-06CA1510056_010_010-2022040610354.20 ppb
2022-04-06CA1510056_008_008-2022040610175.80 ppb
2022-04-19CA1510056_013_013-2022041910326.50 ppb
2022-05-10CA1510056_013_013-2022051011564.00 ppb
2022-06-06CA1510056_013_013-2022060611404.50 ppb
2022-07-06CA1510056_013_013-2022070613151.80 ppb
2022-07-12CA1510056_022_022-2022071212256.10 ppb
2022-07-12CA1510056_008_008-2022071212435.10 ppb
2022-07-12CA1510056_010_010-2022071212504.90 ppb
2022-08-04CA1510056_013_013-2022080409024.00 ppb
2022-10-05CA1510056_010_010-2022100509202.60 ppb
2022-10-05CA1510056_013_013-2022100508582.60 ppb
2022-10-05CA1510056_008_008-2022100509503.00 ppb
2022-12-06CA1510056_013_013-2022120612082.90 ppb
2023-01-12CA1510056_008_008-202301121031ND
2023-01-12CA1510056_010_010-202301121051ND
2023-02-01CA1510056_013_013-2023020111302.40 ppb
2023-03-06CA1510056_013_013-2023030609212.30 ppb
2023-03-09CA1510056_013_013-202303091123ND
2023-04-10CA1510056_010_010-202304100955ND
2023-04-10CA1510056_013_013-202304100930ND
2023-04-10CA1510056_008_008-2023041009501.20 ppb
2023-05-04CA1510056_013_013-2023050412443.10 ppb
2023-06-06CA1510056_013_013-2023060611062.70 ppb
2023-07-12CA1510056_010_010-2023071210351.80 ppb
2023-07-12CA1510056_013_013-2023071210551.70 ppb
2023-08-09CA1510056_013_013-2023080912161.40 ppb
2023-10-04CA1510056_013_013-2023100408352.60 ppb
2023-10-04CA1510056_008_008-2023100408553.10 ppb
2023-10-04CA1510056_010_010-2023100409002.30 ppb