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EWG's Tap Water Database — 2019 UPDATE

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Tetrachloroethylene (perchloroethylene)

Sandy City Water System

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.

 

42

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.0500 ppb121ND - 0.600 ppb
2013ND20ND
20140.110 ppb101ND - 1.10 ppb
2015ND70ND
20160.189 ppb92ND - 0.900 ppb
2017ND20ND

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 Result
2012-06-15ND
2012-06-15ND
2012-06-15ND
2012-08-020.600 ppb
2012-08-03ND
2012-08-07ND
2012-08-08ND
2012-08-09ND
2012-08-28ND
2012-10-25ND
2012-11-27ND
2012-11-27ND
2013-06-18ND
2013-06-18ND
2014-02-20ND
2014-05-29ND
2014-05-291.10 ppb
2014-05-29ND
2014-05-29ND
2014-05-30ND
2014-05-30ND
2014-06-05ND
2014-06-06ND
2014-07-21ND
2015-04-06ND
2015-07-06ND
2015-07-06ND
2015-07-14ND
2015-07-16ND
2015-07-22ND
2015-11-09ND
2016-03-11ND
2016-03-11ND
2016-04-22ND
2016-06-060.800 ppb
2016-06-14ND
2016-06-17ND
2016-06-210.900 ppb
2016-06-22ND
2016-06-22ND
2017-06-22ND
2017-09-01ND