Know Your Environment. Protect Your Health.

Naphthalene

Northwest Harris County Municipal Utility District 23

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.

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
2019ND30ND
2020ND30ND
2021ND70ND
2022ND50ND
2023ND50ND

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-11AE09046ND
2018-01-11AE08956ND
2018-05-17AE26815ND
2018-07-12AE33153ND
2018-10-09AE42952ND
2019-01-31AE52467ND
2019-09-25AE84642ND
2019-11-07AE88933ND
2020-02-13AE98459ND
2020-08-13AF23542ND
2020-12-03AF36488ND
2021-03-09AF46016ND
2021-03-09AF46170ND
2021-04-06AF49185ND
2021-06-10AF57597ND
2021-08-12AF66123ND
2021-08-12AF66148ND
2021-10-21AF74371ND
2022-02-03AF83333ND
2022-02-03AF83519ND
2022-05-17AF97252ND
2022-07-21AG05793ND
2022-10-25AG18331ND
2023-01-12AG24446ND
2023-01-12AG24514ND
2023-04-13AG36773ND
2023-08-17AG53066ND
2023-10-12AG59738ND