Pentachlorophenol
Aqua Pa Uwchlan
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 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 23 | 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 |
|---|---|---|
| 2022-08-03 | 27224190.00 | ND |
| 2022-10-12 | 27632715.00 | ND |
| 2023-02-07 | 28340516.00 | ND |
| 2023-02-07 | 28340495.00 | ND |
| 2023-02-07 | 28340502.00 | ND |
| 2023-02-07 | 28340488.00 | ND |
| 2023-02-07 | 28340509.00 | ND |
| 2023-02-14 | 28340823.00 | ND |
| 2023-04-17 | 28692530.00 | ND |
| 2023-04-20 | 28889781.00 | ND |
| 2023-04-20 | 28889787.00 | ND |
| 2023-04-20 | 28692407.00 | ND |
| 2023-04-26 | 28889798.00 | ND |
| 2023-04-26 | 28889804.00 | ND |
| 2023-07-11 | 29487132.00 | ND |
| 2023-07-11 | 29487180.00 | ND |
| 2023-07-17 | 29487217.00 | ND |
| 2023-07-17 | 29487160.00 | ND |
| 2023-07-17 | 29487245.00 | ND |
| 2023-07-17 | 29487273.00 | ND |
| 2023-10-16 | 30062509.00 | ND |
| 2023-10-16 | 30062453.00 | ND |
| 2023-10-16 | 30062481.00 | ND |
| 2023-10-18 | 30062425.00 | ND |
| 2023-10-18 | 30062384.00 | ND |