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EWG's Tap Water Database — 2021 UPDATE

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Xylenes (total)

Massapequa WD

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.

MORE ABOUT THIS CONTAMINANT

 

87

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND200ND
2015ND110ND
2016ND160ND
2017ND140ND
2018ND140ND
2019ND120ND

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
2014-02-11ND
2014-02-19ND
2014-02-26ND
2014-03-12ND
2014-03-13ND
2014-04-16ND
2014-04-23ND
2014-04-30ND
2014-05-14ND
2014-07-11ND
2014-07-16ND
2014-07-17ND
2014-07-22ND
2014-07-24ND
2014-10-15ND
2014-10-17ND
2014-11-05ND
2014-11-12ND
2014-11-26ND
2014-12-10ND
2015-01-08ND
2015-01-12ND
2015-01-13ND
2015-04-21ND
2015-04-22ND
2015-04-23ND
2015-07-17ND
2015-07-20ND
2015-07-21ND
2015-10-13ND
2015-10-15ND
2016-01-15ND
2016-01-20ND
2016-01-26ND
2016-04-19ND
2016-04-21ND
2016-04-22ND
2016-04-25ND
2016-05-05ND
2016-05-06ND
2016-07-27ND
2016-07-28ND
2016-08-02ND
2016-08-04ND
2016-10-14ND
2016-10-17ND
2016-10-18ND
2017-01-18ND
2017-01-23ND
2017-04-17ND
2017-04-19ND
2017-04-21ND
2017-05-04ND
2017-07-17ND
2017-07-18ND
2017-07-20ND
2017-07-31ND
2017-08-01ND
2017-08-03ND
2017-10-12ND
2017-10-13ND
2018-01-09ND
2018-01-16ND
2018-04-10ND
2018-04-11ND
2018-07-10ND
2018-07-11ND
2018-07-17ND
2018-07-19ND
2018-07-20ND
2018-10-03ND
2018-10-09ND
2018-10-10ND
2018-10-11ND
2018-10-16ND
2019-01-07ND
2019-01-18ND
2019-01-31ND
2019-04-03ND
2019-04-04ND
2019-05-09ND
2019-07-23ND
2019-07-24ND
2019-07-25ND
2019-07-26ND
2019-10-11ND
2019-10-15ND