Pentachlorophenol
Westchester County Water District #1
Pentachlorophenol is a carcinogenic chemical used as a wood preservative. It harms developing fetuses, and causes immune suppression and hormone disruption.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 1 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | 0.0213 ppb | 3 | 1 | ND - 0.0640 ppb |
2019 | ND | 2 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
---|---|---|
2014-12-01 | AQ24568SOC | ND |
2016-09-06 | AS19152 SOC WD#1 | ND |
2016-09-06 | AS19150 SOC WD#1 | ND |
2017-11-13 | AT23824SOCS | ND |
2017-11-13 | AT23822SOCS | ND |
2018-09-24 | AU20758WD1 SOCS | 0.0640 ppb |
2018-09-24 | AU20757WD1 SOCS | ND |
2018-12-03 | AU25856WD1 SOCS | ND |
2019-11-12 | AV23849D SOCS | ND |
2019-11-12 | AV23850D SOCS | ND |