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EWG's Tap Water Database — 2019 UPDATE

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Pentachlorophenol

San Antonio Water System Northeast

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

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013N/A00N/A
2014ND40ND
2015ND30ND
2016N/A00N/A
2017ND40ND

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
2012-05-211205665007ND
2012-05-211205665006ND
2012-05-211205665005ND
2014-09-02AC65490ND
2014-09-02AC65473ND
2014-09-02AC65475ND
2014-09-02AC65476ND
2015-07-08AC98818ND
2015-07-08AC98819ND
2015-07-09AC99017ND
2017-01-05AD63346ND
2017-01-05AD63347ND
2017-01-05AD63349ND
2017-12-13AE07709ND