Know Your Environment. Protect Your Health.

Chromium (total)

City of Hammond 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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019ND20ND
2020N/A00N/A
2021ND40ND
2022ND10ND
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
2018-02-19AE20678ND
2018-02-19AE20681ND
2018-02-19AE20684ND
2018-02-19AE20687ND
2018-02-19AE20678ND
2018-02-19AE20681ND
2018-02-19AE20684ND
2018-02-19AE20687ND
2019-07-23B1903189-001ND
2019-07-23B1903189-001ND
2021-01-19B2100164-001ND
2021-01-19B2100164-002ND
2021-01-19B2100164-003ND
2021-01-19B2100164-004ND
2022-02-14B2200631-001ND