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EWG's Tap Water Database — 2021 UPDATE

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Naphthalene

Oakland Water Department

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.

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND70ND
2015ND50ND
2016ND50ND
2017ND70ND
2018ND50ND
2019ND50ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-104030191-02ND
2014-03-104030191-01ND
2014-05-274050726-01ND
2014-09-114090330-04ND
2014-09-114090330-02ND
2014-09-114090330-01ND
2014-12-024120044-01ND
2015-03-245030525-02ND
2015-03-245030525-01ND
2015-06-015060017-01ND
2015-08-185080496-01ND
2015-11-305110811-01ND
2016-03-156030481-01ND
2016-03-156030481-02ND
2016-06-076060207-01ND
2016-09-086090186-01ND
2016-11-286110802-01ND
2017-03-217030501-01ND
2017-03-217030501-02ND
2017-04-287040872-01ND
2017-09-227090738-03ND
2017-09-227090738-01ND
2017-09-227090738-02ND
2017-11-227110826-01ND
2018-03-018030012-01ND
2018-03-018030012-02ND
2018-05-298051149-01ND
2018-08-168080689-01ND
2018-11-058110135-01ND
2019-03-199030730-02ND
2019-03-199030730-01ND
2019-06-109060324-01ND
2019-09-059090177-01ND
2019-11-279111190-01ND