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EWG's Tap Water Database — 2019 UPDATE

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Tetrachloroethylene (perchloroethylene)

Emmaus Borough Public Water

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.

 

120

Samples

15

Samples exceeding legal limit (MCL)

30

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.23 ppb205ND - 7.20 ppb
20130.960 ppb205ND - 5.70 ppb
20140.990 ppb205ND - 6.30 ppb
20151.32 ppb205ND - 6.00 ppb
20161.71 ppb205ND - 11.0 ppb
20172.16 ppb205ND - 11.8 ppb

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
2012-02-16120007141ND
2012-02-16120007142ND
2012-02-161200071433.90 ppb
2012-02-161200071444.50 ppb
2012-02-16120007138ND
2012-02-16120007139ND
2012-02-16120007140ND
2012-02-16120007137ND
2012-05-151200191524.90 ppb
2012-05-15120019149ND
2012-05-15120019150ND
2012-05-15120019148ND
2012-08-061200323744.10 ppb
2012-08-06120032371ND
2012-08-06120032372ND
2012-08-06120032370ND
2012-11-131200476347.20 ppb
2012-11-13120047631ND
2012-11-13120047632ND
2012-11-13120047630ND
2013-02-21130008326ND
2013-02-21130008327ND
2013-02-211300083283.70 ppb
2013-02-211300083295.70 ppb
2013-02-21130008323ND
2013-02-21130008324ND
2013-02-21130008325ND
2013-02-21130008322ND
2013-05-201300207374.30 ppb
2013-05-20130020734ND
2013-05-20130020735ND
2013-05-20130020733ND
2013-08-221300374383.20 ppb
2013-08-22130037435ND
2013-08-22130037436ND
2013-08-22130037434ND
2013-11-261300529922.30 ppb
2013-11-26130052989ND
2013-11-26130052990ND
2013-11-26130052988ND
2014-02-26140008220ND
2014-02-26140008221ND
2014-02-261400082223.00 ppb
2014-02-261400082235.30 ppb
2014-02-26140008217ND
2014-02-26140008218ND
2014-02-26140008219ND
2014-02-26140008216ND
2014-05-271400217942.90 ppb
2014-05-27140021791ND
2014-05-27140021792ND
2014-05-27140021790ND
2014-08-281400389372.30 ppb
2014-08-28140038934ND
2014-08-28140038935ND
2014-08-28140038933ND
2014-11-251400535806.30 ppb
2014-11-25140053577ND
2014-11-25140053578ND
2014-11-25140053576ND
2015-02-2412434972ND
2015-02-2412434994ND
2015-02-24124350154.40 ppb
2015-02-24124350366.00 ppb
2015-02-2412434906ND
2015-02-2412434927ND
2015-02-2412434949ND
2015-02-2412434885ND
2015-05-27127887174.40 ppb
2015-05-2712788668ND
2015-05-2712788690ND
2015-05-2712788647ND
2015-08-26133017806.00 ppb
2015-08-2613301734ND
2015-08-2613301755ND
2015-08-2613301713ND
2015-11-23135487025.60 ppb
2015-11-2313548566ND
2015-11-2313548589ND
2015-11-2313548545ND
2016-03-0714020482ND
2016-03-0714020504ND
2016-03-07140205252.60 ppb
2016-03-07140205464.80 ppb
2016-03-0714020415ND
2016-03-0714020436ND
2016-03-0714020457ND
2016-03-0714020394ND
2016-05-24142965888.80 ppb
2016-05-2414296560ND
2016-05-2414618843ND
2016-05-2414296541ND
2016-08-30147854877.00 ppb
2016-08-3014785433ND
2016-08-3014785461ND
2016-08-3014785422ND
2016-11-171526741011.0 ppb
2016-11-1715267362ND
2016-11-1715267389ND
2016-11-1715267348ND
2017-03-0715836119ND
2017-03-0715836124ND
2017-03-07158361265.50 ppb
2017-03-07158361255.10 ppb
2017-03-0715836120ND
2017-03-0715836121ND
2017-03-0715836122ND
2017-03-0715836123ND
2017-05-24161426309.40 ppb
2017-05-2416142627ND
2017-05-2416142628ND
2017-05-2416142629ND
2017-08-311661234511.4 ppb
2017-08-3116612342ND
2017-08-3116612343ND
2017-08-3116612344ND
2017-11-091734579711.8 ppb
2017-11-0917345794ND
2017-11-0917345795ND
2017-11-0917345796ND