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EWG's Tap Water Database — 2021 UPDATE

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Naphthalene

City of Friendswood

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.

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40

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND50ND
2015ND80ND
2016ND70ND
2017ND50ND
2018ND80ND
2019ND70ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-20AC43949ND
2014-02-20AC43948ND
2014-02-20AC43875ND
2014-02-20AC43867ND
2014-03-20AC47856ND
2015-02-05AC79514ND
2015-02-05AC79506ND
2015-02-05AC79510ND
2015-02-05AC79512ND
2015-02-05AC79543ND
2015-05-19AC92693ND
2015-05-19AC92692ND
2015-05-19AC92691ND
2016-02-04AD22263ND
2016-02-04AD22119ND
2016-02-04AD22173ND
2016-02-04AD22161ND
2016-02-04AD22177ND
2016-09-28AD51724ND
2016-10-26AD54839ND
2017-01-19AD65886ND
2017-01-19AD65743ND
2017-01-19AD65723ND
2017-01-19AD65721ND
2017-05-03AD82490ND
2018-01-29AE11109ND
2018-01-29AE11006ND
2018-05-21AE27042ND
2018-05-21AE27044ND
2018-05-21AE27093ND
2018-05-21AE27094ND
2018-09-17AE40331ND
2018-09-17AE40251ND
2019-02-04AE52755ND
2019-02-04AE52712ND
2019-02-04AE52710ND
2019-02-04AE52716ND
2019-02-04AE52718ND
2019-04-22AE63211ND
2019-07-15AE74435ND