Naphthalene
Greendale Waterworks
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.
20
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 | 2.14 ppb | 4 | 4 | 0.770 ppb - 3.60 ppb |
| 2015 | 0.784 ppb | 5 | 5 | 0.130 ppb - 1.80 ppb |
| 2016 | 0.747 ppb | 3 | 3 | 0.530 ppb - 1.000 ppb |
| 2017 | 1.82 ppb | 4 | 4 | 0.270 ppb - 5.60 ppb |
| 2018 | 0.415 ppb | 2 | 2 | 0.260 ppb - 0.570 ppb |
| 2019 | 0.775 ppb | 2 | 2 | 0.250 ppb - 1.30 ppb |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-03-05 | 773319 | 0.770 ppb |
| 2014-06-03 | 794166 | 2.00 ppb |
| 2014-09-02 | 814782 | 3.60 ppb |
| 2014-12-02 | 833633 | 2.20 ppb |
| 2015-03-04 | 846446 | 0.800 ppb |
| 2015-06-02 | 863111 | 1.80 ppb |
| 2015-09-02 | 880649 | 0.130 ppb |
| 2015-09-02 | 880647 | 0.340 ppb |
| 2015-12-02 | 896271 | 0.850 ppb |
| 2016-06-08 | 925873 | 0.710 ppb |
| 2016-09-07 | 944007 | 1.000 ppb |
| 2016-11-30 | 962265 | 0.530 ppb |
| 2017-03-08 | 976957 | 0.270 ppb |
| 2017-06-07 | 996319 | 0.860 ppb |
| 2017-09-06 | 1016384 | 5.60 ppb |
| 2017-12-06 | 1032494 | 0.550 ppb |
| 2018-09-05 | 1078436 | 0.570 ppb |
| 2018-12-06 | 1096509 | 0.260 ppb |
| 2019-09-04 | 1145425 | 1.30 ppb |
| 2019-12-04 | 1163573 | 0.250 ppb |