Know Your Environment. Protect Your Health.

Chromium (total)

Hawkins Water Co-cal Water Service (puc)

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.

 

46

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND20ND
2020ND30ND
2021N/A00N/A
20223.36 ppb16162.20 ppb - 6.60 ppb
20231.96 ppb1918ND - 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
2018-02-08CA4900546_003_003-201802080930ND
2018-02-08CA4900546_001_001-201802080925ND
2018-03-14CA4900546_001_001-201803141255ND
2018-03-14CA4900546_003_003-201803141250ND
2018-04-12CA4900546_001_001-201804121120ND
2018-04-12CA4900546_003_003-201804121115ND
2019-03-19CA4900546_001_001-201903191110ND
2019-03-19CA4900546_003_003-201903191115ND
2020-07-20CA4900546_001_001-202007201205ND
2020-07-20CA4900546_003_003-202007201215ND
2020-08-18CA4900546_001_001-202008181240ND
2022-04-12CA4900546_003_003-2022041208103.70 ppb
2022-04-12CA4900546_001_001-2022041208154.00 ppb
2022-05-09CA4900546_001_001-2022050908152.50 ppb
2022-05-09CA4900546_003_003-2022050908003.90 ppb
2022-06-13CA4900546_001_001-2022061308106.60 ppb
2022-06-13CA4900546_003_003-2022061308155.60 ppb
2022-07-12CA4900546_003_003-2022071208403.10 ppb
2022-07-12CA4900546_001_001-2022071208303.10 ppb
2022-08-09CA4900546_001_001-2022080908153.10 ppb
2022-08-09CA4900546_003_003-2022080908203.10 ppb
2022-10-05CA4900546_003_003-2022100508102.70 ppb
2022-10-05CA4900546_001_001-2022100508152.70 ppb
2022-11-16CA4900546_001_001-2022111608302.30 ppb
2022-11-16CA4900546_003_003-2022111608302.20 ppb
2022-12-13CA4900546_003_003-2022121308252.60 ppb
2022-12-13CA4900546_001_001-2022121308302.60 ppb
2023-01-12CA4900546_003_003-2023011214052.10 ppb
2023-01-12CA4900546_001_001-2023011214002.40 ppb
2023-02-14CA4900546_003_003-2023021408152.40 ppb
2023-02-14CA4900546_001_001-2023021408302.50 ppb
2023-03-16CA4900546_001_001-2023031607551.30 ppb
2023-03-16CA4900546_003_003-2023031607501.10 ppb
2023-04-10CA4900546_001_001-2023041007451.000 ppb
2023-04-10CA4900546_003_003-2023041007401.10 ppb
2023-05-16CA4900546_001_001-2023051608102.80 ppb
2023-05-16CA4900546_003_003-2023051608052.90 ppb
2023-06-15CA4900546_001_001-2023061507502.40 ppb
2023-06-15CA4900546_003_003-2023061507552.40 ppb
2023-07-16CA4900546_001_001-2023071608102.10 ppb
2023-07-16CA4900546_003_003-2023071608153.10 ppb
2023-08-29CA4900546_001_001-202308290810ND
2023-09-13CA4900546_003_003-2023091308101.50 ppb
2023-09-13CA4900546_001_001-2023091308051.80 ppb
2023-10-09CA4900546_003_003-2023100907502.20 ppb
2023-10-09CA4900546_001_001-2023100907552.10 ppb