Pentachlorophenol
Horsham Water&sewer 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 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 24 | 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 |
|---|---|---|
| 2023-02-08 | 28520607.00 | ND |
| 2023-02-08 | 28520538.00 | ND |
| 2023-02-15 | 28520584.00 | ND |
| 2023-02-15 | 28520561.00 | ND |
| 2023-03-01 | 28520638.00 | ND |
| 2023-03-01 | 28520666.00 | ND |
| 2023-04-18 | 28899776.00 | ND |
| 2023-04-18 | 28899647.00 | ND |
| 2023-04-18 | 28900349.00 | ND |
| 2023-04-18 | 29107855.00 | ND |
| 2023-04-18 | 28899720.00 | ND |
| 2023-04-18 | 28899748.00 | ND |
| 2023-07-20 | 29496849.00 | ND |
| 2023-07-20 | 29496822.00 | ND |
| 2023-07-27 | 29496880.00 | ND |
| 2023-07-27 | 29496908.00 | ND |
| 2023-08-10 | 29699536.00 | ND |
| 2023-08-10 | 29699508.00 | ND |
| 2023-10-26 | 30071320.00 | ND |
| 2023-10-26 | 30071348.00 | ND |
| 2023-10-26 | 30070813.00 | ND |
| 2023-10-26 | 30071404.00 | ND |
| 2023-10-26 | 30070841.00 | ND |
| 2023-10-26 | 30071376.00 | ND |