Naphthalene
City of Shavano Park
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.
39
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 |
|---|---|---|---|---|
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 7 | 0 | ND |
| 2020 | ND | 6 | 0 | ND |
| 2021 | ND | 5 | 0 | ND |
| 2022 | ND | 9 | 0 | ND |
| 2023 | ND | 7 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-03-02 | AE16674 | ND |
| 2018-03-02 | AE16668 | ND |
| 2018-03-02 | AE16783 | ND |
| 2018-03-02 | AE16676 | ND |
| 2018-03-02 | AE16700 | ND |
| 2019-04-03 | AE61108 | ND |
| 2019-04-03 | AE61107 | ND |
| 2019-04-03 | AE61106 | ND |
| 2019-04-03 | AE61047 | ND |
| 2019-04-03 | AE61039 | ND |
| 2019-04-03 | AE61035 | ND |
| 2019-04-03 | AE61029 | ND |
| 2020-02-24 | AE99519 | ND |
| 2020-02-24 | AE99539 | ND |
| 2020-02-24 | AE99541 | ND |
| 2020-02-24 | AE99608 | ND |
| 2020-05-15 | AF11875 | ND |
| 2020-05-15 | AF11951 | ND |
| 2021-02-23 | AF44017 | ND |
| 2021-02-23 | AF43943 | ND |
| 2021-02-23 | AF43941 | ND |
| 2021-02-23 | AF43945 | ND |
| 2021-06-18 | AF58893 | ND |
| 2022-03-09 | AF88501 | ND |
| 2022-03-09 | AF88499 | ND |
| 2022-03-09 | AF88498 | ND |
| 2022-03-09 | AF88412 | ND |
| 2022-03-09 | AF88408 | ND |
| 2022-03-09 | AF88406 | ND |
| 2022-03-09 | AF88394 | ND |
| 2022-06-21 | AG01786 | ND |
| 2022-09-27 | AG15096 | ND |
| 2023-03-16 | AG33423 | ND |
| 2023-06-22 | AG45585 | ND |
| 2023-06-22 | AG45593 | ND |
| 2023-06-22 | AG45601 | ND |
| 2023-06-22 | AG45603 | ND |
| 2023-06-22 | AG45704 | ND |
| 2023-06-22 | AG45705 | ND |