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EWG's Tap Water Database — 2021 UPDATE

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Naphthalene

Northwest Harris County MUD 5

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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND60ND
2016ND30ND
2017ND50ND
2018ND70ND
2019ND40ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-10-14AC69599ND
2015-07-28AD01365ND
2015-07-28AD01366ND
2015-07-28AD01364ND
2015-07-28AD01247ND
2015-07-28AD01279ND
2015-07-28AD01287ND
2016-11-09AD57442ND
2016-11-09AD57450ND
2016-11-09AD57448ND
2017-08-08AD92473ND
2017-08-08AD92417ND
2017-09-26AD98065ND
2017-09-26AD98059ND
2017-09-26AD98063ND
2018-02-07AE12763ND
2018-05-10AE26010ND
2018-05-10AE26009ND
2018-05-10AE25945ND
2018-05-10AE26008ND
2018-05-10AE25951ND
2018-05-10AE25947ND
2019-02-05AE52907ND
2019-03-26AE59980ND
2019-03-26AE59970ND
2019-03-26AE59964ND