Know Your Environment. Protect Your Health.

Chromium (hexavalent)

Rapides Parish Waterworks District 3

Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).

 

20

Samples

0

Samples exceeding legal limit (MCL)

13

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.0423 ppb107ND - 0.1000 ppb
20140.0348 ppb106ND - 0.120 ppb
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
2023N/A00N/A

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2013-07-2335101586005AMND
2013-07-2335101586001AMND
2013-07-2335101586009AM0.0600 ppb
2013-07-2335101586003AM0.0410 ppb
2013-07-2335101586015AM0.0530 ppb
2013-07-2335101586013AM0.1000 ppb
2013-07-2335101586011AM0.0310 ppb
2013-07-2335101586007AMND
2013-10-2135112897003AM0.0780 ppb
2013-10-2135112897001AM0.0600 ppb
2014-01-3035124497013AMND
2014-01-3035124497015AMND
2014-01-3035124497009AM0.120 ppb
2014-01-3035124497011AM0.0430 ppb
2014-01-3035124497001AM0.0450 ppb
2014-01-3035124497003AM0.0420 ppb
2014-01-3035124497007AMND
2014-01-3035124497005AMND
2014-04-1035133815003AM0.0530 ppb
2014-04-1035133815001AM0.0450 ppb