Pentachlorophenol
Swta - Main System
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 | 14 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 14 | 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 |
|---|---|---|
| 2020-04-07 | 22080455.00 | ND |
| 2020-04-07 | 22080485.00 | ND |
| 2020-04-07 | 22080545.00 | ND |
| 2020-04-07 | 22080425.00 | ND |
| 2020-04-07 | 22080515.00 | ND |
| 2020-04-07 | 22080395.00 | ND |
| 2020-04-07 | 22080365.00 | ND |
| 2020-07-28 | 22854616.00 | ND |
| 2020-07-28 | 22854676.00 | ND |
| 2020-07-28 | 22854766.00 | ND |
| 2020-07-28 | 22854646.00 | ND |
| 2020-07-28 | 22854586.00 | ND |
| 2020-07-28 | 22854706.00 | ND |
| 2020-07-28 | 22854736.00 | ND |
| 2023-05-02 | 28960756.00 | ND |
| 2023-05-02 | 28960761.00 | ND |
| 2023-05-02 | 28960760.00 | ND |
| 2023-05-02 | 28960759.00 | ND |
| 2023-05-02 | 28960757.00 | ND |
| 2023-05-02 | 28960758.00 | ND |
| 2023-06-27 | 29166845.00 | ND |
| 2023-08-08 | 29556455.00 | ND |
| 2023-08-08 | 29556452.00 | ND |
| 2023-08-08 | 29556453.00 | ND |
| 2023-08-08 | 29556451.00 | ND |
| 2023-08-08 | 29556454.00 | ND |
| 2023-08-08 | 29556450.00 | ND |
| 2023-08-08 | 29556456.00 | ND |