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EWG's Tap Water Database — 2021 UPDATE

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Naphthalene

West Harris County Municipal Utility District 15

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND40ND
2016ND40ND
2017ND40ND
2018ND40ND
2019ND40ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-07-30AC61604ND
2014-07-30AC61606ND
2014-12-22AC75659ND
2014-12-22AC75661ND
2015-08-04AD02435ND
2015-08-04AD02432ND
2015-08-04AD02357ND
2015-08-04AD02361ND
2016-02-01AD21063ND
2016-02-01AD21272ND
2016-02-01AD21245ND
2016-02-01AD21097ND
2017-01-24AD66590ND
2017-01-24AD66468ND
2017-03-21AD76160ND
2017-03-21AD76063ND
2018-03-05AE16774ND
2018-03-05AE16771ND
2018-03-05AE16636ND
2018-03-05AE16632ND
2019-01-28AE51775ND
2019-01-28AE51688ND
2019-04-23AE63390ND
2019-04-23AE63419ND