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EWG's Tap Water Database — 2021 UPDATE

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Naphthalene

City of Bay City

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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56

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND100ND
2016ND120ND
2017ND80ND
2018ND100ND
2019ND120ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-19AC43651ND
2014-02-19AC43654ND
2014-02-19AC43652ND
2014-02-19AC43590ND
2015-01-29AC78511ND
2015-01-29AC78521ND
2015-01-29AC78519ND
2015-01-29AC78515ND
2015-01-29AC78531ND
2015-01-29AC78555ND
2015-01-29AC78557ND
2015-01-29AC78556ND
2015-01-29AC78558ND
2015-01-29AC78554ND
2016-02-25AD25753ND
2016-02-25AD25767ND
2016-02-25AD25759ND
2016-02-25AD25763ND
2016-02-25AD25897ND
2016-02-25AD25898ND
2016-03-21AD29571ND
2016-06-02AD39249ND
2016-06-02AD39201ND
2016-07-21AD45233ND
2016-09-19AD50155ND
2016-11-16AD58355ND
2017-01-25AD66846ND
2017-01-25AD66925ND
2017-01-25AD66852ND
2017-03-06AD73529ND
2017-03-06AD73530ND
2017-03-06AD73481ND
2017-03-06AD73461ND
2017-03-06AD73479ND
2018-01-09AE08375ND
2018-01-09AE08373ND
2018-01-09AE08407ND
2018-01-09AE08379ND
2018-01-09AE08359ND
2018-01-09AE08450ND
2018-01-09AE08453ND
2018-01-09AE08470ND
2018-01-09AE08448ND
2018-01-09AE08449ND
2019-02-07AE53628ND
2019-02-07AE53496ND
2019-02-07AE53488ND
2019-02-07AE53498ND
2019-02-07AE53492ND
2019-02-07AE53490ND
2019-02-07AE53624ND
2019-02-07AE53627ND
2019-04-29AE63953ND
2019-04-29AE63951ND
2019-08-06AE77279ND
2019-08-06AE77273ND