Pentachlorophenol
Northfield
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 | 1 | 0 | ND |
| 2019 | ND | 7 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 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 |
|---|---|---|
| 2018-10-22 | 18J1084-01 | ND |
| 2019-01-18 | 19A0676-01 | ND |
| 2019-01-18 | 19A0676-02 | ND |
| 2019-01-18 | 19A0676-03 | ND |
| 2019-06-20 | 19F1478-01 | ND |
| 2019-06-20 | 19F1478-02 | ND |
| 2019-06-20 | 19F1478-03 | ND |
| 2019-07-25 | 19G1899-01 | ND |
| 2020-07-08 | 20G0398-01 | ND |
| 2020-10-27 | 20J1404-01 | ND |
| 2020-10-27 | 20J1405-02 | ND |
| 2020-10-27 | 20J1405-03 | ND |
| 2020-10-27 | 20J1405-04 | ND |
| 2021-02-25 | 21B1431-01 | ND |
| 2021-02-25 | 21B1431-04 | ND |
| 2021-02-25 | 21B1431-03 | ND |
| 2021-02-25 | 21B1431-02 | ND |
| 2021-05-11 | 21E0572-01 | ND |
| 2022-02-08 | 22B0561-01 | ND |
| 2022-02-08 | 22B0561-02 | ND |
| 2022-05-05 | 22E0381-01 | ND |
| 2022-05-05 | 22E0381-02 | ND |
| 2023-05-09 | 23E0759-02 | ND |
| 2023-05-09 | 23E0759-04 | ND |
| 2023-08-07 | 23H0555-01 | ND |
| 2023-08-07 | 23H0555-02 | ND |