Know Your Environment. Protect Your Health.

Chromium (total)

Jones County 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
2018ND10ND
2019ND10ND
2020ND50ND
2021ND10ND
2022ND10ND
2023ND60ND

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
2018-03-018754-030118-E04IND
2019-09-268754-092619-E04IND
2020-07-138754-071320-E02IND
2020-07-138754-071320-E07IND
2020-07-138754-071320-E1AIND
2020-07-138754-071320-E1BIND
2020-07-138754-071320-E8BIND
2021-03-248754-032421-E04IND
2022-12-068754-120622-EP1IND
2023-06-138754-061323-E02IND
2023-06-138754-061323-E07IND
2023-06-138754-061323-E1AIND
2023-06-138754-061323-E1BIND
2023-06-138754-061323-E8BIND
2023-06-138754-061323-EP1IND