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EWG's Tap Water Database — 2021 UPDATE

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Naphthalene

City of Hallettsville

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.

MORE ABOUT THIS CONTAMINANT

 

31

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND90ND
2016ND50ND
2017ND40ND
2018ND60ND
2019ND40ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-14AC38768ND
2014-01-14AC38762ND
2014-10-27AC70534ND
2015-03-26AC86249ND
2015-03-26AC86426ND
2015-03-26AC86425ND
2015-03-26AC86427ND
2015-03-26AC86303ND
2015-03-26AC86299ND
2015-06-09AC95146ND
2015-09-08AD06023ND
2015-12-02AD15253ND
2016-03-08AD27589ND
2016-03-08AD27725ND
2016-03-08AD27591ND
2016-03-08AD27571ND
2016-03-18AD29919ND
2017-12-06AE07089ND
2017-12-06AE06982ND
2017-12-06AE06984ND
2017-12-06AE06986ND
2018-09-19AE40872ND
2018-09-19AE40874ND
2018-09-19AE40873ND
2018-09-19AE40775ND
2018-09-19AE40773ND
2018-09-19AE40759ND
2019-08-22AE80240ND
2019-08-22AE80356ND
2019-08-22AE80246ND
2019-08-22AE80242ND