Pentachlorophenol
Avon Water Company
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 | 11 | 0 | ND |
| 2019 | ND | 7 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | ND | 4 | 0 | ND |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2018-03-05 | D8C0238-03SOC | ND |
| 2018-03-05 | D8C0238-04SOC | ND |
| 2018-03-05 | D8C0238-05SOC | ND |
| 2018-03-05 | D8C0238-06SOC | ND |
| 2018-03-05 | D8C0238-07SOC | ND |
| 2018-03-05 | D8C0238-08SOC | ND |
| 2018-03-05 | D8C0238-01SOCR | ND |
| 2018-03-05 | D8C0238-02SOC | ND |
| 2018-04-25 | D8D2151-06SOC | ND |
| 2018-07-26 | CA98747 | ND |
| 2018-10-09 | SOC 200508699 | ND |
| 2019-03-12 | SOC 200524505 | ND |
| 2019-05-20 | SOC 200533253 | ND |
| 2019-05-20 | SOC 200533254 | ND |
| 2019-05-20 | SOC 200533255 | ND |
| 2019-05-20 | SOC 200533256 | ND |
| 2019-05-21 | SOC 200533252 | ND |
| 2019-10-09 | SOC 200552472 | ND |
| 2022-03-24 | CK96360 | ND |
| 2022-04-08 | CL06143 | ND |
| 2022-05-06 | CL27001 | ND |
| 2022-07-22 | CL89161 | ND |