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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

City of Hereford

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).

 

16

Samples

0

Samples exceeding legal limit (MCL)

16

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20130.494 ppb16160.207 ppb - 0.901 ppb
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/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
2013-05-233E30015-070.579 ppb
2013-05-233E30015-080.357 ppb
2013-05-233E30015-050.315 ppb
2013-05-233E30015-030.658 ppb
2013-05-233E30015-040.266 ppb
2013-05-233E30015-020.252 ppb
2013-05-233E30015-010.842 ppb
2013-05-233E30015-060.420 ppb
2013-12-033L11011-050.210 ppb
2013-12-033L11011-070.835 ppb
2013-12-033L11011-060.486 ppb
2013-12-033L11011-030.901 ppb
2013-12-033L11011-080.448 ppb
2013-12-033L11011-040.207 ppb
2013-12-033L11011-020.314 ppb
2013-12-033L11011-010.806 ppb