Pentachlorophenol
Aquarion Water Company of Connecticut - Main System
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 | 9 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 2 | 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 |
|---|---|---|
| 2018-07-02 | 201809434-SOC | ND |
| 2018-07-02 | 201809407-SOC | ND |
| 2018-07-02 | 201809385-SOC | ND |
| 2018-07-05 | 201809658-SOC | ND |
| 2019-05-20 | 201907127-SOC | ND |
| 2019-05-20 | 201907132-SOC | ND |
| 2019-05-20 | 201907135-SOC | ND |
| 2019-06-17 | 201908775-SOC | ND |
| 2019-07-01 | 201909657-SOC | ND |
| 2019-07-01 | 201909693-SOC | ND |
| 2019-07-01 | 201909695-SOC | ND |
| 2019-07-01 | 201909689-SOC | ND |
| 2019-07-02 | 201909818-SOC | ND |
| 2021-07-06 | 202110283-SOC | ND |
| 2021-10-04 | 202116105-SOC | ND |
| 2022-06-06 | 202208946-SOC | ND |
| 2022-08-02 | 202213390-SOC | ND |