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EWG's Tap Water Database — 2021 UPDATE

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Naphthalene

Harris County Municipal Utility District 70

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
2014ND20ND
2015ND50ND
2016ND40ND
2017ND30ND
2018ND20ND
2019ND20ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-08-18AC63955ND
2014-08-18AC64086ND
2015-02-03AC79106ND
2015-02-03AC79020ND
2015-06-17AC96434ND
2015-08-18AD04613ND
2015-12-01AD15009ND
2016-03-22AD29901ND
2016-03-22AD29966ND
2016-09-28AD52128ND
2016-12-14AD62276ND
2017-02-07AD69379ND
2017-02-07AD69224ND
2017-05-10AD83810ND
2018-02-01AE12007ND
2018-02-01AE11931ND
2019-01-28AE51684ND
2019-01-28AE51772ND