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EWG's Tap Water Database — 2021 UPDATE

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Chromium (hexavalent)

Ferndale

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).

 

8

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
20150.176 ppb880.0900 ppb - 0.280 ppb
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2015-02-09283079010.0900 ppb
2015-02-09283078010.1000 ppb
2015-05-12289177010.170 ppb
2015-05-12289178010.150 ppb
2015-08-10298392010.210 ppb
2015-08-10298393010.200 ppb
2015-11-11305637010.280 ppb
2015-11-11305638010.210 ppb