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EWG's Tap Water Database — 2019 UPDATE

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4-Androstene-3,17-dione

Contra Costa Water District

Human sex hormones are sometimes detected at low concentrations in drinking water. There are no current health guidelines to determine whether these exposures are safe, or if they could pose a risk to human health.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND80ND
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A

ppt = parts per trillion

All test results

Date Lab ID Result
2013-03-12201303130365SSND
2013-03-20201303210135SSND
2013-06-11201306120211SSND
2013-06-12201306130200SSND
2013-09-10201309110439SSND
2013-09-11201309120475SSND
2013-12-10201312120835SSND
2013-12-11201312120837SSND