Naphthalene
Portland
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.
12
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 | 2 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-08-20 | 14233012607 | ND |
| 2014-10-13 | 14289002701 | ND |
| 2015-07-28 | 15211003501 | ND |
| 2015-09-28 | 15274001401 | ND |
| 2015-10-27 | 15301001601 | ND |
| 2016-10-11 | 16287001001 | ND |
| 2017-07-10 | 17193000806 | ND |
| 2017-10-09 | 17285002201 | ND |
| 2018-08-21 | 18235005201 | ND |
| 2018-10-09 | 18284001201 | ND |
| 2019-09-16 | 19261001901 | ND |
| 2019-10-21 | 19297000401 | ND |