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EWG's Tap Water Database — 2021 UPDATE

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Naphthalene

Harris County MUD 167

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND20ND
2016ND10ND
2017ND90ND
2018ND30ND
2019ND20ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-08-13AC63433ND
2015-07-30AD01885ND
2015-07-30AD01788ND
2016-12-05AD60361ND
2017-02-03AD68969ND
2017-02-03AD68749ND
2017-02-03AD68751ND
2017-04-21AD80731ND
2017-04-21AD80796ND
2017-08-01AD91655ND
2017-08-01AD91627ND
2017-10-24AE01942ND
2017-10-24AE01839ND
2018-11-06AE45487ND
2018-11-06AE45447ND
2018-11-06AE45445ND
2019-08-27AE81098ND
2019-08-27AE81096ND