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EWG's Tap Water Database — 2021 UPDATE

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Pentachlorophenol

Sulphur Water System

Pentachlorophenol is a carcinogenic chemical used as a wood preservative. It harms developing fetuses, and causes immune suppression and hormone disruption.

MORE ABOUT THIS CONTAMINANT

 

36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015ND20ND
2016N/A00N/A
2017ND120ND
2018N/A00N/A
2019ND100ND

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
2014-07-21AD93897ND
2014-07-21AD93894ND
2014-07-21AD93897ND
2014-07-21AD93896ND
2014-07-21AD93895ND
2014-07-21AD93894ND
2014-07-21AD93895ND
2014-07-21AD93896ND
2014-10-06AD98325ND
2014-10-06AD98326ND
2014-10-06AD98325ND
2014-10-06AD98326ND
2015-03-0235177665003ND
2015-03-0235177665003ND
2017-07-1735324418005ND
2017-07-1735324418001ND
2017-07-1735324418004ND
2017-07-1735324418003ND
2017-07-1735324418002ND
2017-07-1735324418001ND
2017-07-1735324418005ND
2017-07-1735324418004ND
2017-07-1735324418003ND
2017-07-1735324418002ND
2017-09-1935337316003ND
2017-09-1935337316003ND
2019-07-0835480758001ND
2019-07-0835480758001ND
2019-12-0935518078001ND
2019-12-0935518078004ND
2019-12-0935518078003ND
2019-12-0935518078002ND
2019-12-0935518078001ND
2019-12-0935518078004ND
2019-12-0935518078003ND
2019-12-0935518078002ND