Pentachlorophenol
CTWC - Shoreline Region-Guilford System
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 | 4 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | ND | 11 | 0 | ND |
2017 | N/A | 0 | 0 | N/A |
2018 | ND | 1 | 0 | ND |
2019 | ND | 15 | 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 |
---|---|---|
2014-06-12 | 140612CWCSOC2 | ND |
2014-09-16 | 141015-0009SOC2 | ND |
2014-09-16 | 3104517 | ND |
2014-12-29 | 3162952 | ND |
2015-06-03 | BJ25400SOC2 | ND |
2015-07-27 | BJ63961SOC2 | ND |
2015-10-19 | BK10283SOC2 | ND |
2016-01-21 | BK55954SOC2 | ND |
2016-01-21 | BK55943SOC2 | ND |
2016-01-21 | BK55941SOC2 | ND |
2016-01-25 | BK57134SOC2 | ND |
2016-03-14 | BK78127SOC2 | ND |
2016-05-04 | BN25256SOC2 | ND |
2016-06-01 | BN44892SOC2 | ND |
2016-06-01 | BN44876SOC2 | ND |
2016-07-12 | BN71477SOC2 | ND |
2016-07-19 | BN75782SOC2 | ND |
2016-07-19 | BN75784SOC2 | ND |
2018-07-09 | CA86688 | ND |
2019-01-30 | SOC 200520057 | ND |
2019-06-06 | SOC 200535308 | ND |
2019-06-06 | SOC 200535309 | ND |
2019-06-11 | SOC 200536055 | ND |
2019-06-11 | SOC 200536054 | ND |
2019-06-19 | SOC 200542695 | ND |
2019-06-24 | SOC 200537520 | ND |
2019-07-29 | SOC 200542348 | ND |
2019-07-30 | SOC 200542453 | ND |
2019-07-31 | SOC 200542480 | ND |
2019-07-31 | SOC 200542466 | ND |
2019-07-31 | SOC 200542497 | ND |
2019-07-31 | SOC 200542499 | ND |
2019-07-31 | SOC 200542468 | ND |
2019-08-14 | SOC 200544869 | ND |