Know Your Environment. Protect Your Health.

Chromium (hexavalent)

North Wales Water Authority

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).

 

40

Samples

0

Samples exceeding legal limit (MCL)

30

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0873 ppb4030ND - 0.410 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
2014-02-0414012246-020.0500 ppb
2014-02-0414012246-060.0500 ppb
2014-02-0414012246-070.410 ppb
2014-02-0414012246-040.150 ppb
2014-02-0414012246-05ND
2014-02-0414012246-100.0500 ppb
2014-02-0414012246-080.160 ppb
2014-02-0414012246-090.0400 ppb
2014-02-0414012246-150.0700 ppb
2014-02-0414012246-170.0900 ppb
2014-02-0414012246-160.0900 ppb
2014-02-0414012246-11ND
2014-02-0414012246-180.350 ppb
2014-02-0414012246-010.0700 ppb
2014-02-0414012246-03ND
2014-02-0414012246-130.0600 ppb
2014-02-0414012246-140.0600 ppb
2014-02-0414012246-120.0800 ppb
2014-05-0514050297-010.110 ppb
2014-05-0614050298-010.0400 ppb
2014-08-1114080693-010.0900 ppb
2014-08-1114080701-01ND
2014-08-1114080700-010.0500 ppb
2014-08-1114080706-010.330 ppb
2014-08-1114080704-01ND
2014-08-1114080705-01ND
2014-08-1114080709-01ND
2014-08-1114080702-01ND
2014-08-1114080694-010.0800 ppb
2014-08-1114080707-010.140 ppb
2014-08-1114080696-010.0600 ppb
2014-08-1114080708-010.0500 ppb
2014-08-1114080697-010.140 ppb
2014-08-1114080699-010.0500 ppb
2014-08-1114080695-010.0800 ppb
2014-08-1114080698-010.200 ppb
2014-08-1114080692-01ND
2014-08-1114080703-010.150 ppb
2014-11-1014103223-02ND
2014-11-1014103223-010.140 ppb