Know Your Environment. Protect Your Health.

Chromium (total)

Cws - Tulco Water Company

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.

 

10

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
2019ND10ND
2020N/A00N/A
2021ND40ND
2022ND50ND
2023N/A00N/A

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
2019-01-09CA5410041_004_004-201901090944ND
2021-02-15CA5410041_004_004-202102150818ND
2021-02-15CA5410041_009_009-202102150829ND
2021-03-08CA5410041_009_009-202103080924ND
2021-03-08CA5410041_004_004-202103080949ND
2022-02-17CA5410041_004_004-202202171020ND
2022-02-17CA5410041_009_009-202202171012ND
2022-02-17CA5410041_004_004-202202170939ND
2022-02-24CA5410041_004_004-202202240924ND
2022-02-24CA5410041_009_009-202202240930ND