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EWG's Tap Water Database — 2019 UPDATE

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Pentachlorophenol

St. Louis City

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

 

27

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND10ND
2014ND20ND
2015ND40ND
2016ND100ND
2017ND80ND

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
2012-05-09AB71796ND
2012-05-09AB71797ND
2013-05-06AB97904ND
2014-06-02AC23738ND
2014-06-02AC23739ND
2015-06-01AC47107ND
2015-06-01AC47106ND
2015-09-22CRCW092215M515ND
2015-09-22HBCB092215M515ND
2016-03-03HBCB030316M515ND
2016-03-04CRCW030416M515ND
2016-06-06AC75865ND
2016-06-06AC75864ND
2016-06-08CRCW060816M515ND
2016-06-08HBCB060816M515ND
2016-09-30HBCB093016M515ND
2016-09-30CRCW093016M515ND
2016-12-28HBCB122816M515ND
2016-12-28CRCW122816M515ND
2017-05-19AC98045ND
2017-05-19AC98044ND
2017-06-21AC99038ND
2017-06-21AC99039ND
2017-09-29HBCB092917M515ND
2017-09-29CRCW092917M515ND
2017-11-15CRCW111517M515ND
2017-11-15HBCB111517M515ND