Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Pentachlorophenol

Three Valleys Municipal Water District

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

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND50ND
2013ND30ND
2014ND20ND
2015ND20ND
2016ND50ND
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
2012-04-173761-002-1100ND
2012-05-153761-002-1100ND
2012-06-133761-004-1200ND
2012-09-113761-004-0800ND
2012-09-113761-002-0000ND
2013-03-053761-002-1040ND
2013-06-113761-002-0830ND
2013-12-173761-002-1000ND
2014-06-103761-004-1030ND
2014-09-163761-004-1101ND
2015-03-103761-002-0930ND
2015-06-093761-004-0940ND
2016-03-153761-002-0900ND
2016-06-213761-004-1006ND
2016-06-213761-002-1030ND
2016-09-133761-002-1000ND
2016-12-133761-002-1020ND
2017-03-213761-004-1040ND
2017-06-213761-004-1100ND
2017-06-213761-002-1000ND
2017-09-123761-002-0900ND