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EWG's Tap Water Database — 2019 UPDATE

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Tetrachloroethylene (perchloroethylene)

City of Mesa

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.

 

92

Samples

0

Samples exceeding legal limit (MCL)

16

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND370ND
20130.320 ppb103ND - 1.30 ppb
20140.340 ppb105ND - 1.10 ppb
20150.257 ppb215ND - 1.20 ppb
20160.379 ppb83ND - 1.08 ppb
2017ND60ND

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
2012-01-12201201120258VND
2012-04-09201204090008VND
2012-04-10201204100084VND
2012-04-16201204160112VND
2012-04-17201204170459VND
2012-04-17201204170458VND
2012-05-07201205070059VND
2012-05-08201205080126VND
2012-08-0612070773VND
2012-08-0612070776VND
2012-08-0612070782VND
2012-08-0812070787VND
2012-08-0812070784VND
2012-08-0812070774VND
2012-08-1312070735VND
2012-08-1312070733VND
2012-08-1312070714VND
2012-08-1412070736VND
2012-08-1412070732ND
2012-08-1412070715VND
2012-08-14120070736VND
2012-08-1512070716VND
2012-08-1512070734VND
2012-08-2212070786VND
2012-08-2212070783VND
2012-08-2212070778VND
2012-08-2712070779VND
2012-08-2712070777VND
2012-08-2712070772VND
2012-08-2812070785VND
2012-08-2812070781VND
2012-08-3012080753VND
2012-09-2412070780VND
2012-11-1912110554ND
2012-11-2012110619VND
2012-11-2012110575ND
2012-11-2012110570ND
2013-03-0513030009ND
2013-03-0513030008ND
2013-05-0913050079ND
2013-05-0913050078ND
2013-05-0913050077ND
2013-05-15130502961.30 ppb
2013-07-1613070278V0.700 ppb
2013-08-0613080049VND
2013-10-15201310150513V1.20 ppb
2013-11-13201311140691VND
2014-02-12140204030.500 ppb
2014-04-1414040462V0.700 ppb
2014-04-1514040513V1.10 ppb
2014-04-2114040565VND
2014-04-2214040549VND
2014-04-2214040548VND
2014-08-04140800020.500 ppb
2014-08-0414080001ND
2014-10-0814100299ND
2014-12-02141200400.600 ppb
2015-02-0415020072ND
2015-02-0915020157ND
2015-02-11150204410.900 ppb
2015-04-0715040272VND
2015-04-0715040249VND
2015-04-1415040401V1.20 ppb
2015-04-1415040400VND
2015-04-2115040607VND
2015-04-2115040606VND
2015-04-2715040701VND
2015-04-2915040771VND
2015-07-0715070120ND
2015-07-0715070119ND
2015-07-13150702471.09 ppb
2015-07-1415070252ND
2015-07-2115070448V1.12 ppb
2015-10-06151000551.08 ppb
2015-10-1215100147ND
2015-10-1415100211ND
2015-10-1415100210ND
2015-10-2115100530ND
2016-05-1116050438V1.08 ppb
2016-05-1116050438A1.08 ppb
2016-06-0816060165ND
2016-07-1416070145VND
2016-07-1816070507V0.870 ppb
2016-08-1116080428ND
2016-08-1116080427ND
2016-11-2216110466ND
2017-04-1117040387VOCND
2017-05-2517050671VOCND
2017-07-1017070232VOCND
2017-07-1117070293VOCND
2017-08-2117080520VOCND
2017-10-1217100475ND