Naphthalene
Harris County Water Control and Improvement District 114
NOTE: Harris County Water Control and Improvement District 114 purchases water from North Harris County Regional Water Authority which is required to test for naphthalene. Sample information shown below was taken by North Harris County Regional Water Authority.
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 6 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 4 | 0 | ND |
ppb = parts per billion
All test results
NOTE: Harris County Water Control and Improvement District 114 purchases water from North Harris County Regional Water Authority which is required to test for naphthalene. Sample information shown below was taken by North Harris County Regional Water Authority.
| Date | Lab ID | Result |
|---|