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EWG's Tap Water Database — 2021 UPDATE

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Naphthalene

Montgomery County UD 4

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015ND20ND
2016ND20ND
2017ND10ND
2018ND20ND
2019ND10ND

ppb = parts per billion

All test results

Date Lab ID Result
2015-07-14AC99415ND
2015-07-14AC99490ND
2016-03-18AD29689ND
2016-06-13AD40227ND
2017-10-25AE02174ND
2018-06-25AE31204ND
2018-06-25AE31316ND
2019-08-28AE81402ND