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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

City of Donna

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)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20130.0203 ppb42ND - 0.0440 ppb
2014ND40ND
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
2013-09-18201309200137AM0.0370 ppb
2013-09-18201309200139AM0.0440 ppb
2013-12-16201312170169AMND
2013-12-16201312170167AMND
2014-03-19201403200374AMND
2014-03-19201403200247AMND
2014-06-10201406120184AMND
2014-06-10201406120186AMND