Know Your Environment. Protect Your Health.

Chromium (total)

Port Sulphur Water District

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND40ND
2020ND20ND
2021ND40ND
2022ND30ND
2023ND10ND

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
2018-01-3035371297001ND
2018-01-3035371297001ND
2019-02-0535446733001ND
2019-02-0535446733001ND
2019-05-3035472024001ND
2019-05-3035472024001ND
2020-03-10B2001266-001ND
2020-03-18B2001333-001ND
2021-03-01B2100978-001ND
2021-03-01B2100979-001ND
2021-09-13B2104483-001ND
2021-10-26B2105733-001ND
2022-01-13B2200183-001ND
2022-09-28B2204782-001ND
2022-12-1935767946001ND
2023-02-01B2300469-001ND