Pentachlorophenol
The Cape Master 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 | 1 | 0 | ND |
| 2019 | ND | 15 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 16 | 0 | ND |
| 2023 | ND | 26 | 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 |
|---|---|---|
| 2018-02-06 | CA17756-01 | ND |
| 2019-04-16 | CC02949-01 | ND |
| 2019-07-09 | CC09160-01 | ND |
| 2019-07-09 | CC09160-02 | ND |
| 2019-07-09 | CC09160-03 | ND |
| 2019-07-09 | CC09161-01 | ND |
| 2019-07-09 | CC09161-02 | ND |
| 2019-07-09 | CC09161-03RE1 | ND |
| 2019-07-09 | CC09161-04 | ND |
| 2019-10-15 | CC14175-03 | ND |
| 2019-10-15 | CC14175-04 | ND |
| 2019-10-15 | CC14175-02RE1 | ND |
| 2019-10-15 | CC14174-03 | ND |
| 2019-10-15 | CC14174-01 | ND |
| 2019-10-15 | CC14174-02 | ND |
| 2019-10-15 | CC14175-01 | ND |
| 2020-01-21 | CC18892-01 | ND |
| 2020-01-21 | CC18893-01 | ND |
| 2020-05-05 | CD02657-01 | ND |
| 2020-07-07 | CD08046-01 | ND |
| 2020-10-20 | CD13482-01 | ND |
| 2021-02-24 | CD21064-01 | ND |
| 2021-05-04 | CE02282-01 | ND |
| 2021-09-29 | CE07327-01 | ND |
| 2021-10-26 | CE12278-01 | ND |
| 2022-02-16 | 37729_22-07136 | ND |
| 2022-05-18 | 37729_22-22018 | ND |
| 2022-08-08 | 37729_22-36827 | ND |
| 2022-08-08 | 37729_22-36826 | ND |
| 2022-08-09 | 37729_22-37248 | ND |
| 2022-08-19 | 37729_22-39864 | ND |
| 2022-08-19 | 37729_22-39863 | ND |
| 2022-08-22 | 37729_22-40007 | ND |
| 2022-08-22 | 37729_22-40006 | ND |
| 2022-11-17 | 37729_22-56712 | ND |
| 2022-11-17 | 37729_22-56713 | ND |
| 2022-11-17 | 37729_22-56706 | ND |
| 2022-11-17 | 37729_22-56705 | ND |
| 2022-11-17 | 37729_22-56704 | ND |
| 2022-11-17 | 37729_22-56701 | ND |
| 2022-11-21 | 37729_22-57219 | ND |
| 2023-02-07 | 37729_23-06324 | ND |
| 2023-03-08 | 37729_23-11894 | ND |
| 2023-03-08 | 37729_23-11939 | ND |
| 2023-03-08 | 37729_23-11940 | ND |
| 2023-03-08 | 37729_23-11941 | ND |
| 2023-03-10 | 37729_23-12256 | ND |
| 2023-05-03 | 37729_23-22152 | ND |
| 2023-05-03 | 37729_23-22173 | ND |
| 2023-05-03 | 37729_23-22169 | ND |
| 2023-05-03 | 37729_23-22153 | ND |
| 2023-05-03 | 37729_23-22150 | ND |
| 2023-05-03 | 37729_23-22154 | ND |
| 2023-07-13 | 37729_23-36823 | ND |
| 2023-09-21 | 37729_23-53797 | ND |
| 2023-09-21 | 37729_23-53796 | ND |
| 2023-09-21 | 37729_23-53795 | ND |
| 2023-09-21 | 37729_23-53752 | ND |
| 2023-09-27 | 37729_23-54803 | ND |
| 2023-10-12 | 37729_23-58185 | ND |
| 2023-11-15 | 37729_23-65034 | ND |
| 2023-11-16 | 37729_23-65479 | ND |
| 2023-11-16 | 37729_23-65480 | ND |
| 2023-11-16 | 37729_23-65484 | ND |
| 2023-11-16 | 37729_23-65485 | ND |
| 2023-11-16 | 37729_23-65486 | ND |
| 2023-11-16 | 37729_23-65487 | ND |