Pentachlorophenol
North Penn 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 | 22 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 8 | 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 |
|---|---|---|
| 2020-04-01 | 22022951.00 | ND |
| 2020-04-01 | 22023071.00 | ND |
| 2020-04-01 | 22023041.00 | ND |
| 2020-04-01 | 22022981.00 | ND |
| 2020-04-01 | 22023011.00 | ND |
| 2020-04-01 | 22023149.00 | ND |
| 2020-04-13 | 22023363.00 | ND |
| 2020-04-13 | 22023333.00 | ND |
| 2020-04-13 | 22023303.00 | ND |
| 2020-04-13 | 22023273.00 | ND |
| 2020-05-04 | 22215405.00 | ND |
| 2020-07-06 | 22607347.00 | ND |
| 2020-07-06 | 22607377.00 | ND |
| 2020-07-06 | 22607407.00 | ND |
| 2020-07-06 | 22607317.00 | ND |
| 2020-07-06 | 22608066.00 | ND |
| 2020-08-10 | 22799627.00 | ND |
| 2020-08-10 | 22799597.00 | ND |
| 2020-08-10 | 22799507.00 | ND |
| 2020-08-12 | 22799567.00 | ND |
| 2020-08-12 | 22799537.00 | ND |
| 2020-08-31 | 22999406.00 | ND |
| 2023-04-12 | 28702912.00 | ND |
| 2023-04-12 | 28702910.00 | ND |
| 2023-04-12 | 28702909.00 | ND |
| 2023-04-12 | 28702911.00 | ND |
| 2023-07-19 | 29498079.00 | ND |
| 2023-07-19 | 29498081.00 | ND |
| 2023-07-19 | 29498080.00 | ND |
| 2023-07-19 | 29498078.00 | ND |