Know Your Environment. Protect Your Health.

Chromium (total)

Calcasieu Parish WW District No 1

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.

 

19

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
2019ND20ND
2020ND60ND
2021ND50ND
2022ND20ND
2023ND40ND

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
2019-07-16B1903028-001ND
2019-07-16B1903028-001ND
2020-02-10B2000676-001ND
2020-02-10B2000676-002ND
2020-02-10B2000676-003ND
2020-02-10B2000676-004ND
2020-11-23B2006215-001ND
2020-11-23B2006215-002ND
2021-05-13B2102368-002ND
2021-05-13B2102368-001ND
2021-06-22B2102863-001ND
2021-09-27B2105098-001ND
2021-12-13B2106648-001ND
2022-02-21B2200780-001ND
2022-05-02B2202093-001ND
2023-02-06B2300531-001ND
2023-02-06B2300531-002ND
2023-02-06B2300531-003ND
2023-02-06B2300531-004ND