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EWG's Tap Water Database — 2021 UPDATE

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Tetrachloroethylene (perchloroethylene)

Collegeville Trappe Joint Public Works Department

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

 

168

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND280ND
2015ND280ND
2016ND280ND
2017ND280ND
2018ND280ND
2019ND280ND

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
2014-01-2020140238ND
2014-01-2020140239ND
2014-01-2020140240ND
2014-01-2020140241ND
2014-01-2020140242ND
2014-03-1720140955ND
2014-03-1720140956ND
2014-04-2120141346ND
2014-04-2120141347ND
2014-04-2120141348ND
2014-04-2120141349ND
2014-04-2120141350ND
2014-04-2120141351ND
2014-04-2120141352ND
2014-07-0714070813-001ND
2014-07-0714070813-002ND
2014-07-0714070813-003ND
2014-07-0714070813-004ND
2014-08-1320142789ND
2014-08-1320142790ND
2014-08-1320142791ND
2014-11-1714111750-01ND
2014-11-1714111750-02ND
2014-11-1714111750-03ND
2014-11-1714111750-04ND
2014-11-1714111750-05ND
2014-11-1714111750-06ND
2014-12-0114120200-01ND
2015-01-1912285463ND
2015-01-1912285484ND
2015-01-1912285505ND
2015-01-1912285526ND
2015-01-1912285547ND
2015-01-1912285568ND
2015-01-1912285589ND
2015-04-2012631601ND
2015-04-2012631622ND
2015-04-2012631643ND
2015-04-2012631664ND
2015-04-2012631685ND
2015-04-2012631706ND
2015-04-2012631727ND
2015-07-0613011214ND
2015-07-0613011240ND
2015-07-0613011266ND
2015-07-0613011292ND
2015-07-0613011318ND
2015-07-0613011344ND
2015-07-2013011558ND
2015-10-1913387786ND
2015-10-1913387807ND
2015-10-1913387828ND
2015-10-1913387849ND
2015-10-1913387870ND
2015-10-1913387891ND
2015-10-1913387912ND
2016-01-1813751357ND
2016-01-1813751378ND
2016-01-1813751399ND
2016-01-1813751420ND
2016-01-1813751441ND
2016-01-1813751462ND
2016-02-1613869086ND
2016-04-1814101351ND
2016-04-1814101372ND
2016-04-1814101393ND
2016-04-1814101414ND
2016-04-1814101435ND
2016-04-1814101456ND
2016-04-1814101477ND
2016-07-1814568373ND
2016-07-1814568394ND
2016-07-1814568415ND
2016-07-1814568436ND
2016-07-1814568457ND
2016-07-1814568478ND
2016-07-1814568499ND
2016-10-1715074121ND
2016-10-1715074142ND
2016-10-1715074163ND
2016-10-1715074184ND
2016-10-1715074205ND
2016-10-1715074226ND
2016-10-1715074247ND
2017-02-2715653936ND
2017-02-2715653957ND
2017-02-2715653978ND
2017-02-2715653999ND
2017-02-2715654020ND
2017-03-0715794003ND
2017-03-0715794024ND
2017-04-1715935336ND
2017-04-1715935357ND
2017-04-1715935378ND
2017-04-1715935399ND
2017-04-1715935420ND
2017-04-1715935441ND
2017-04-1715935462ND
2017-07-1716411676ND
2017-07-1716411697ND
2017-07-1716411718ND
2017-07-1716411739ND
2017-07-1716411760ND
2017-07-1716411781ND
2017-07-1716411802ND
2017-10-1616878527ND
2017-10-1616878548ND
2017-10-1616878569ND
2017-10-1616878590ND
2017-10-1616878611ND
2017-10-1616878632ND
2017-10-1616878653ND
2018-01-2220180311ND
2018-01-2220180312ND
2018-01-2220180313ND
2018-01-2220180314ND
2018-01-2220180315ND
2018-01-2220180316ND
2018-01-2220180317ND
2018-04-1820181575ND
2018-04-1820181576ND
2018-04-1820181577ND
2018-04-1820181578ND
2018-04-1820181579ND
2018-04-1820181580ND
2018-04-1820181581ND
2018-07-1620182718ND
2018-07-1620182719ND
2018-07-1620182720ND
2018-07-1620182721ND
2018-07-1620182722ND
2018-07-1620182723ND
2018-07-1620182724ND
2018-10-1520183946ND
2018-10-1520183947ND
2018-10-1520183948ND
2018-10-1520183949ND
2018-10-1520183950ND
2018-10-1520183951ND
2018-10-1520183952ND
2019-01-2320190306ND
2019-01-2320190307ND
2019-01-2320190308ND
2019-01-2320190309ND
2019-01-2320190310ND
2019-01-2320190311ND
2019-01-2320190312ND
2019-04-1520191439ND
2019-04-1520191440ND
2019-04-1520191441ND
2019-04-1520191442ND
2019-04-1520191443ND
2019-04-1520191444ND
2019-04-1520191445ND
2019-07-1520192706ND
2019-07-1520192707ND
2019-07-1520192708ND
2019-07-1520192709ND
2019-07-1520192710ND
2019-07-1520192711ND
2019-07-1520192712ND
2019-10-2120194150ND
2019-10-2120194151ND
2019-10-2120194152ND
2019-10-2120194153ND
2019-10-2120194154ND
2019-10-2120194155ND
2019-10-2120194156ND