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EWG's Tap Water Database — 2019 UPDATE

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Xylenes (total)

Aqua Pa Uwchlan

Xylenes are solvents used in industrial and consumer products, such as cleaning agents and paint thinners. Xylenes cause nervous system damage and may harm developing fetuses.

 

36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND60ND
2013ND60ND
2014ND60ND
2015ND60ND
2016ND60ND
2017ND60ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 1,800 ppb

The EWG Health Guideline of 1,800 ppb for xylenes 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 harm to the brain and nervous system.

EPA Maximum Contaminant
Level (MCL) 10,000 ppb

The legal limit for xylenes, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s. This limit may not fully protect against harm to the brain and nervous system due to xylene exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2012-02-06AD37757ND
2012-02-06AD37758ND
2012-02-23AD39504ND
2012-02-23AD39503ND
2012-02-29AD39501ND
2012-05-25AD49447ND
2013-02-05AD79498ND
2013-02-05AD79499ND
2013-02-20AD80828ND
2013-02-20AD80829ND
2013-03-05AD82342ND
2013-05-21AD90752ND
2014-02-06AE22430ND
2014-02-14AE22385ND
2014-02-14AE22387ND
2014-02-21AE23946ND
2014-02-21AE23943ND
2014-04-23AE29861ND
2015-02-0312395451ND
2015-02-0312395535ND
2015-02-0312395493ND
2015-02-0312395514ND
2015-02-0412395430ND
2015-02-0412395472ND
2016-01-2213746212ND
2016-01-2213746233ND
2016-01-2213746254ND
2016-01-2213746275ND
2016-02-1013864179ND
2016-02-1013864200ND
2017-03-2815787952ND
2017-03-2815787973ND
2017-04-1915928759ND
2017-04-1915928780ND
2017-04-2115928738ND
2017-06-2116249803ND