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EWG's Tap Water Database — 2021 UPDATE

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Tetrachloroethylene (perchloroethylene)

City of Granbury

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.

MORE ABOUT THIS CONTAMINANT

 

72

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND50ND
2015ND100ND
2016ND80ND
2017ND240ND
2018ND110ND
2019ND140ND

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
2014-07-09Q1426808068ND
2014-07-09Q1426808007ND
2014-07-09Q1426808005ND
2014-07-09Q1426808003ND
2014-07-09Q1426808002ND
2015-06-18Q1522966007ND
2015-06-18Q1522966002ND
2015-06-18Q1522966005ND
2015-06-18Q1522966008ND
2015-06-18Q1522966011ND
2015-06-18Q1522966013ND
2015-08-06Q1530880006ND
2015-11-16Q1544973005ND
2015-11-16Q1544973003ND
2015-11-16Q1544973002ND
2016-01-14Q1601671032ND
2016-01-14Q1601671028ND
2016-01-14Q1601671030ND
2016-01-14Q1601671034ND
2016-01-14Q1601671037ND
2016-05-31Q1621308009ND
2016-07-28Q1630948002ND
2016-11-30Q1652000005ND
2017-04-17Q1715565008ND
2017-04-17Q1715565006ND
2017-04-17Q1715565011ND
2017-04-17Q1715565012ND
2017-04-17Q1715565015ND
2017-07-06Q1727515021ND
2017-07-06Q1727515041ND
2017-07-06Q1727515018ND
2017-07-06Q1727515051ND
2017-07-06Q1727515023ND
2017-07-06Q1727515016ND
2017-09-19Q1744801010ND
2017-09-19Q1744801013ND
2017-09-19Q1744801008ND
2017-09-19Q1744801006ND
2017-09-19Q1744801004ND
2017-10-03Q1748324013ND
2017-10-03Q1748324015ND
2017-10-03Q1748324017ND
2017-10-03Q1748324019ND
2017-10-03Q1748324021ND
2017-10-04Q1748839036ND
2017-10-04Q1748839034ND
2017-10-04Q1748839042ND
2018-01-22Q1802342003ND
2018-01-22Q1802342002ND
2018-05-02Q1817630014ND
2018-05-02Q1817630013ND
2018-05-02Q1817630017ND
2018-09-26Q1838636002ND
2018-09-26Q1838636005ND
2018-12-10Q1850473003ND
2018-12-10Q1850473009ND
2018-12-10Q1850473007ND
2018-12-10Q1850473005ND
2019-03-18Q1911097009ND
2019-03-18Q1911097005ND
2019-03-18Q1911097007ND
2019-03-18Q1911097011ND
2019-03-18Q1911097014ND
2019-03-18Q1911097016ND
2019-05-09Q1923093012ND
2019-05-09Q1923093006ND
2019-05-09Q1923093005ND
2019-05-09Q1923093002ND
2019-05-09Q1923093016ND
2019-05-09Q1923093014ND
2019-09-04Q1962164008ND
2019-09-04Q1962164002ND