Naphthalene
Harris County Fresh Water Supply District 1a
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.
14
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 1 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-14 | AC43204 | ND |
| 2015-02-03 | AC79060 | ND |
| 2015-02-03 | AC79117 | ND |
| 2016-02-02 | AD21506 | ND |
| 2016-02-02 | AD21627 | ND |
| 2016-09-09 | AD48886 | ND |
| 2016-10-11 | AD52985 | ND |
| 2017-02-03 | AD68737 | ND |
| 2017-02-03 | AD68982 | ND |
| 2017-04-26 | AD81209 | ND |
| 2018-01-24 | AE10232 | ND |
| 2018-01-24 | AE10299 | ND |
| 2019-01-11 | AE49627 | ND |
| 2019-02-20 | AE55133 | ND |