Know Your Environment. Protect Your Health.

Chromium (total)

Terra Bella Irrigation District - Tbt

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.

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND90ND
2020ND40ND
2021ND30ND
2022ND50ND
20234.50 ppb41ND - 18.0 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
2018-09-17CA5410038_001_001-201809171140ND
2018-09-24CA5410038_027_027-201809241445ND
2018-09-24CA5410038_032_032-201809241300ND
2019-08-29CA5410038_014_014-201908291125ND
2019-08-29CA5410038_004_004-201908291114ND
2019-08-29CA5410038_013_013-201908291108ND
2019-08-29CA5410038_025_025-201908291300ND
2019-08-29CA5410038_020_020-201908291222ND
2019-08-29CA5410038_009_009-201908291228ND
2019-08-29CA5410038_001_001-201908291400ND
2019-08-29CA5410038_016_016-201908291216ND
2019-08-29CA5410038_002_002-201908291226ND
2020-08-27CA5410038_001_001-202008271300ND
2020-08-31CA5410038_024_024-202008311304ND
2020-11-30CA5410038_024_024-202011301225ND
2020-12-29CA5410038_028_028-202012291250ND
2021-08-23CA5410038_001_001-202108231210ND
2021-09-13CA5410038_032_032-202109131219ND
2021-09-13CA5410038_027_027-202109131310ND
2022-08-15CA5410038_001_001-202208151150ND
2022-09-19CA5410038_016_016-202209191148ND
2022-09-19CA5410038_020_020-202209191152ND
2022-09-19CA5410038_025_025-202209191232ND
2022-09-19CA5410038_009_009-202209191158ND
2023-03-28CA5410038_002_002-202303281235ND
2023-07-24CA5410038_001_001-20230724122018.0 ppb
2023-09-12CA5410038_024_024-202309121220ND
2023-12-04CA5410038_028_028-202312041315ND