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EWG's Tap Water Database — 2021 UPDATE

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Naphthalene

Harris County UD 16

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND20ND
2016ND40ND
2017ND20ND
2018ND20ND
2019ND20ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-05-20AC54672ND
2015-02-11AC80219ND
2015-05-05AC90768ND
2016-05-18AD37282ND
2016-05-18AD37370ND
2016-10-18AD53632ND
2016-12-06AD60763ND
2017-01-30AD67527ND
2017-01-30AD67679ND
2018-05-02AE24821ND
2018-05-02AE24889ND
2019-08-15AE78992ND
2019-08-15AE79055ND