Pentachlorophenol
St Bernard Parish Waterworks
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 | 4 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 2 | 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 |
|---|---|---|
| 2018-03-06 | 35378295001 | ND |
| 2018-03-06 | 35378295001 | ND |
| 2018-09-24 | 35419983001 | ND |
| 2018-09-24 | 35419983001 | ND |
| 2019-02-14 | 35448755001 | ND |
| 2019-02-14 | 35448755001 | ND |
| 2019-09-24 | 35500301001 | ND |
| 2019-09-24 | 35500301001 | ND |
| 2020-03-10 | 35536678001 | ND |
| 2020-11-18 | 35593411001 | ND |
| 2021-03-09 | 35617728001 | ND |
| 2021-10-26 | 35673877001 | ND |
| 2022-02-09 | 35696480001 | ND |
| 2022-10-20 | 35754897001 | ND |
| 2023-02-08 | 35778323001 | ND |
| 2023-10-11 | 35834151001 | ND |