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EWG's Tap Water Database — 2021 UPDATE

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Naphthalene

Sharyland Water Supply Corporation

Naphthalene is a polycyclic aromatic hydrocarbon, or PAH, released from combustion of fossil fuels and waste incinerators, and also used as a moth repellent. PAHs increase the risk of cancer; damage the immune, nervous and reproductive systems; and can harm developing fetuses.

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36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND40ND
2015ND40ND
2016ND120ND
2017ND50ND
2018ND50ND
2019ND60ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-31AC41135ND
2014-01-31AC41134ND
2014-08-19AC64300ND
2014-08-19AC64326ND
2015-02-05AC79552ND
2015-05-05AC90605ND
2015-08-03AD02131ND
2015-08-03AD02129ND
2016-02-03AD21954ND
2016-02-03AD21952ND
2016-03-23AD30247ND
2016-03-23AD30149ND
2016-05-11AD36484ND
2016-05-11AD36396ND
2016-09-14AD49452ND
2016-09-14AD49559ND
2016-09-14AD49450ND
2016-09-14AD49488ND
2016-10-26AD55255ND
2016-10-26AD55147ND
2017-04-25AD81607ND
2017-04-25AD81606ND
2017-08-02AD92158ND
2017-08-02AD92156ND
2017-08-02AD92160ND
2018-03-07AE17689ND
2018-05-16AE26871ND
2018-08-31AE39147ND
2018-08-31AE39145ND
2018-08-31AE39155ND
2019-06-24AE71834ND
2019-06-24AE71833ND
2019-06-24AE71835ND
2019-06-24AE71765ND
2019-09-18AE83972ND
2019-09-18AE83974ND