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EWG's Tap Water Database — 2019 UPDATE

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Tetrachloroethylene (perchloroethylene)

Northampton Bucks County Municipal Authority

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.

 

94

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.136 ppb121ND - 1.63 ppb
20130.0667 ppb121ND - 0.800 ppb
20140.0478 ppb231ND - 1.10 ppb
2015ND150ND
20160.0455 ppb111ND - 0.500 ppb
2017ND210ND

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
2012-02-28L4066896-1ND
2012-03-07L4061769-1ND
2012-05-23L4168750-1ND
2012-05-23L4168751-1ND
2012-06-06L3257952-3ND
2012-06-06L3257952-11.63 ppb
2012-06-06L3257952-2ND
2012-06-06L3257952-4ND
2012-08-16L4291049-1ND
2012-08-16L4291049-2ND
2012-11-15L4392086-2ND
2012-11-15L4392086-1ND
2013-03-05L3661861-2ND
2013-03-05L3661861-1ND
2013-05-14L2391330-1ND
2013-05-14L2286687-1ND
2013-07-02L1595500-2ND
2013-07-02L1595500-4ND
2013-07-02L1595500-10.800 ppb
2013-07-02L1595500-3ND
2013-08-08L4725530-1ND
2013-08-08L4725529-1ND
2013-11-19L4836093-1ND
2013-11-19L4836092-1ND
2014-02-25L4951918-1ND
2014-02-25L4951922-1ND
2014-05-20L4690565-1ND
2014-05-20L4799412-1ND
2014-07-17L5163463-13ND
2014-07-17L5163463-1ND
2014-07-17L5163463-2ND
2014-07-17L5163463-15ND
2014-07-17L5163463-3ND
2014-07-17L5163463-14ND
2014-07-17L5163463-41.10 ppb
2014-07-17L5163463-7ND
2014-07-17L5163463-6ND
2014-07-17L5163463-5ND
2014-07-17L5163463-12ND
2014-07-17L5163463-10ND
2014-07-17L5163463-11ND
2014-07-17L5163463-9ND
2014-07-17L5163463-8ND
2014-08-15L4359849-1ND
2014-08-15L4460454-1ND
2014-12-04L5352437-1ND
2014-12-04L5352436-1ND
2015-02-1012390494ND
2015-02-1012390440ND
2015-05-1112738442ND
2015-05-1112738496ND
2015-07-0913859331ND
2015-07-0913859385ND
2015-07-0913859439ND
2015-08-1913123838ND
2015-08-1913123892ND
2015-08-2813124413ND
2015-11-2013503432ND
2015-11-2013503378ND
2015-11-2013503594ND
2015-11-2013503540ND
2015-11-2013503486ND
2016-02-2313975167ND
2016-02-2313975114ND
2016-02-2313975061ND
2016-02-2313975008ND
2016-02-2313974955ND
2016-05-2414237915ND
2016-07-2114555726ND
2016-07-2114555778ND
2016-07-2114555674ND
2016-07-21145556220.500 ppb
2016-08-3014892518ND
2017-02-2715644182ND
2017-06-0716243971ND
2017-08-0116551830ND
2017-08-0116551778ND
2017-08-0116552090ND
2017-08-0116551882ND
2017-08-0116552038ND
2017-08-0116551986ND
2017-08-0116552142ND
2017-08-0116551934ND
2017-08-1716553064ND
2017-08-1716553116ND
2017-08-1716553012ND
2017-08-1716553168ND
2017-08-1716553272ND
2017-08-1716553220ND
2017-08-2416552932ND
2017-08-2416552828ND
2017-08-2416552776ND
2017-08-2416552724ND
2017-08-2416552880ND