Pentachlorophenol
Falls Water Company Inc
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 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 5 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 4 | 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 |
|---|---|---|
| 2018-08-08 | SI80810801 | ND |
| 2018-11-14 | SI81110401 | ND |
| 2019-03-25 | SI90316701 | ND |
| 2019-04-01 | SI90400501 | ND |
| 2021-11-16 | SI11111703 | ND |
| 2021-11-16 | SI11111704 | ND |
| 2021-11-16 | SI11111705 | ND |
| 2021-11-16 | SI11111701 | ND |
| 2021-11-16 | SI11111702 | ND |
| 2022-08-15 | SI20817502 | ND |
| 2022-08-15 | SI20817503 | ND |
| 2022-08-15 | SI20817504 | ND |
| 2022-08-15 | SI20817505 | ND |
| 2023-03-28 | SI30324001 | ND |
| 2023-03-29 | SI30325201 | ND |
| 2023-06-14 | SI30624701 | ND |
| 2023-08-29 | SI30840803 | ND |