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EWG's Tap Water Database — 2019 UPDATE

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Tetrachloroethylene (perchloroethylene)

Penn State Univ.

Dry cleaning chemical tetrachloroethylene, or perc, can cause cancer. It pollutes soil and groundwater due to emissions from dry cleaning facilities, and automotive, metalworking and other industries. Read More.

The EPA considers tetrachloroethylene a likely human carcinogen. It has been linked with increased incidence of lung, breast and colon cancers. Tetrachloroethylene also damages the liver, kidneys and central nervous system. The California public health goal of 0.06 parts per billion, set to protect against cancer, is 80 times lower than the amount allowed by the federal government, which is a Maximum Contaminant Level of 5 parts per billion.

Click here to read more about carcinogenic VOCs.

 

167

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND340ND
2013ND280ND
2014ND140ND
2015ND350ND
2016ND270ND
2017ND290ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for tetrachloroethylene 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) 5 ppb

The legal limit for tetrachloroethylene, established in 1991, was based on analytical detection limits at the time that the standard was set. This limit does not fully protect against the risk of cancer due to tetrachloroethylene exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2012-01-112A11054ND
2012-01-112A11055ND
2012-01-112A11054ND
2012-02-162B16056ND
2012-02-162B16062ND
2012-02-162B16056ND
2012-03-152C15113ND
2012-03-152C15114ND
2012-03-152C15113ND
2012-04-102D10034ND
2012-04-102D10032ND
2012-04-102D10034ND
2012-05-162E16047ND
2012-05-162E16052ND
2012-06-132F13082ND
2012-06-132F13085ND
2012-07-182G18164ND
2012-07-182G18165ND
2012-07-182G18164ND
2012-08-142H14056ND
2012-08-142H14056ND
2012-08-142H14056ND
2012-09-132I14008ND
2012-09-132I14008ND
2012-09-132I14008ND
2012-10-102J11011ND
2012-10-102J11013ND
2012-10-102J11011ND
2012-11-142K14103ND
2012-11-142K14103ND
2012-11-142K14103ND
2012-12-122L12132ND
2012-12-122L12141ND
2012-12-122L12132ND
2013-01-163A16080ND
2013-01-163A16077ND
2013-02-133B13070ND
2013-02-133B13069ND
2013-03-143C14062ND
2013-03-143C14067ND
2013-04-163D16078ND
2013-04-163D16079ND
2013-05-143E14110ND
2013-05-143E14111ND
2013-06-193F19020ND
2013-06-193F19038ND
2013-06-283F28065ND
2013-07-163G16031ND
2013-07-163G16034ND
2013-08-143H14065ND
2013-08-143H14088ND
2013-09-183I18061ND
2013-09-183I18062ND
2013-09-183I18061ND
2013-10-163J16032ND
2013-10-163J16040ND
2013-10-163J16032ND
2013-11-193K19048-06ND
2013-11-193K19040-06ND
2013-12-123L12046-07ND
2013-12-123L12104-06ND
2013-12-123L12046-06ND
2014-01-234A23025-07ND
2014-01-234A23033-06ND
2014-01-234A23025-06ND
2014-02-204B20042-07ND
2014-02-204B20041-07ND
2014-02-204B20042-06ND
2014-03-114C11016-07ND
2014-03-114C11027-07ND
2014-03-114C11016-06ND
2014-04-094D09031-01ND
2014-04-094D09036-01ND
2014-04-094D09037-01ND
2014-06-114F11107-05ND
2014-06-114F11107-04ND
2015-01-2113561247ND
2015-01-2113561275ND
2015-01-2113561248ND
2015-02-1713561331ND
2015-02-1713561296ND
2015-02-1713561332ND
2015-03-1713561373ND
2015-03-1713561374ND
2015-03-1813561401ND
2015-04-2813561437ND
2015-04-2813561436ND
2015-05-2013561499ND
2015-05-2013561464ND
2015-05-2013561500ND
2015-06-1713561562ND
2015-06-1713561527ND
2015-06-1713561563ND
2015-07-1413561604ND
2015-07-1413561632ND
2015-07-1413561605ND
2015-08-1213561689ND
2015-08-1213561653ND
2015-08-1213561688ND
2015-09-1613561751ND
2015-09-1613561716ND
2015-09-1613561752ND
2015-10-1513561793ND
2015-10-1513561821ND
2015-10-1513561794ND
2015-11-1113561188ND
2015-11-1113561164ND
2015-11-1113561212ND
2015-12-1013681486ND
2015-12-1013681517ND
2015-12-1013681487ND
2016-01-2613801556ND
2016-01-2613801508ND
2016-01-2613801532ND
2016-02-2313917111ND
2016-02-2313917070ND
2016-02-2313917112ND
2016-03-1614032229ND
2016-03-1614032206ND
2016-03-1614032183ND
2016-04-2014163597ND
2016-04-2014163556ND
2016-04-2014163598ND
2016-05-1814312905ND
2016-05-1814312936ND
2016-05-1814312906ND
2016-06-2114471230ND
2016-06-2114471262ND
2016-06-2114471231ND
2016-07-1914636472ND
2016-07-1914636429ND
2016-07-1914636473ND
2016-08-2314804536ND
2016-08-2314804486ND
2016-08-2314804511ND
2016-09-2814975888ND
2016-09-2814975920ND
2016-09-2814975889ND
2017-01-1715573244ND
2017-01-1715573245ND
2017-01-1815573201ND
2017-02-2315709657ND
2017-02-2315709658ND
2017-03-1315850539ND
2017-03-2315850706ND
2017-03-2815850834ND
2017-04-1816001587ND
2017-04-1816001588ND
2017-06-2816321150ND
2017-07-1216473293ND
2017-07-1216473391ND
2017-07-1216473392ND
2017-07-1216473393ND
2017-07-1216473394ND
2017-07-1216473395ND
2017-07-1216473396ND
2017-08-0316629368ND
2017-09-2016787339ND
2017-10-3116937431ND
2017-11-2617077308ND
2017-11-2617077309ND
2017-11-2617077310ND
2017-11-2617077311ND
2017-11-2617077312ND
2017-11-2617077313ND
2017-11-3017077370ND
2017-12-1917217478ND