Pentachlorophenol
Upper Hanover Water Authority
Pentachlorophenol is a carcinogenic chemical used as a wood preservative. It harms developing fetuses, and causes immune suppression and hormone disruption.
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 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 7 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 13 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.3 ppb
The EWG Health Guideline of 0.3 ppb for pentachlorophenol was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
EPA Maximum Contaminant
Level (MCL): 1 ppb
The legal limit for pentachlorophenol, established in 1991, was based on analytical detection limits at the time that the standard was set.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2020-03-20 | 21848035.00 | ND |
| 2020-03-20 | 21848033.00 | ND |
| 2020-03-20 | 21848034.00 | ND |
| 2020-06-18 | 22417427.00 | ND |
| 2020-06-18 | 22417430.00 | ND |
| 2020-06-18 | 22417428.00 | ND |
| 2020-06-18 | 22417429.00 | ND |
| 2023-02-28 | 28703113.00 | ND |
| 2023-02-28 | 28703115.00 | ND |
| 2023-02-28 | 28703114.00 | ND |
| 2023-05-24 | 29108975.00 | ND |
| 2023-05-24 | 29108977.00 | ND |
| 2023-05-24 | 29108976.00 | ND |
| 2023-08-21 | 29700690.00 | ND |
| 2023-08-21 | 29700689.00 | ND |
| 2023-08-22 | 29700691.00 | ND |
| 2023-11-13 | 30246628.00 | ND |
| 2023-11-13 | 30246600.00 | ND |
| 2023-11-14 | 30246572.00 | ND |
| 2023-11-28 | 30246544.00 | ND |