Pentachlorophenol
Moscow Water Department
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 | 3 | 0 | ND |
| 2019 | ND | 6 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 2 | 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 |
|---|---|---|
| 2018-08-30 | S180831013-001 | ND |
| 2018-09-13 | S180914037-001 | ND |
| 2018-09-13 | S180914037-002 | ND |
| 2019-04-03 | S190403049-001 | ND |
| 2019-04-03 | S190403049-002 | ND |
| 2019-04-03 | S19190403049-003 | ND |
| 2019-08-07 | S190807089-003 | ND |
| 2019-08-07 | S190807089-004 | ND |
| 2019-08-07 | S190807089-005 | ND |
| 2021-06-22 | SMBF0665-01 | ND |
| 2021-08-05 | SMBH0243-01 | ND |
| 2021-10-26 | SMBJ0820-01 | ND |
| 2022-01-13 | SMCA0309-01 | ND |
| 2022-07-11 | SMCG0226-041 | ND |