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EWG's Tap Water Database — 2021 UPDATE

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Tetrachloroethylene (perchloroethylene)

City of Lodi

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

 

211

Samples

0

Samples exceeding legal limit (MCL)

54

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.450 ppb4612ND - 2.00 ppb
20150.298 ppb5210ND - 1.70 ppb
20160.415 ppb4712ND - 2.20 ppb
20170.500 ppb3310ND - 2.00 ppb
20180.606 ppb176ND - 2.00 ppb
20190.450 ppb164ND - 2.10 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
2014-01-065802-028-0950ND
2014-01-165802-016-10301.70 ppb
2014-01-165802-017-1000ND
2014-01-225802-049-1200ND
2014-02-045802-016-09301.60 ppb
2014-02-055802-003-0750ND
2014-03-175802-016-10201.60 ppb
2014-03-205802-003-0830ND
2014-04-025802-003-1220ND
2014-04-085802-018-0915ND
2014-04-085802-038-1200ND
2014-04-095802-028-0745ND
2014-04-145802-016-10001.60 ppb
2014-04-155802-023-0630ND
2014-05-225802-003-0740ND
2014-05-225802-016-08101.70 ppb
2014-06-045802-003-0915ND
2014-06-045802-016-09301.70 ppb
2014-07-085802-019-0720ND
2014-07-095802-038-1145ND
2014-07-105802-003-0815ND
2014-07-105802-016-08501.60 ppb
2014-07-105802-017-0905ND
2014-07-105802-028-0830ND
2014-07-175802-042-0835ND
2014-08-055802-025-0650ND
2014-08-075802-012-0740ND
2014-08-075802-048-0655ND
2014-08-135802-040-1135ND
2014-08-145802-009-0740ND
2014-08-195802-003-09301.90 ppb
2014-08-205802-016-1000ND
2014-09-155802-016-13302.00 ppb
2014-09-165802-003-0800ND
2014-10-035867-048-1015ND
2014-10-065802-028-1040ND
2014-10-065867-048-1220ND
2014-10-085802-003-1040ND
2014-10-085802-016-12202.00 ppb
2014-10-165802-038-0800ND
2014-11-065802-003-1010ND
2014-11-125802-016-07101.60 ppb
2014-11-125802-048-0730ND
2014-12-035802-016-09201.70 ppb
2014-12-085802-003-1020ND
2014-12-095802-048-0930ND
2015-01-085802-028-0855ND
2015-01-145802-003-0800ND
2015-01-145802-017-0850ND
2015-01-155802-016-08301.40 ppb
2015-01-155802-019-0715ND
2015-01-155802-048-0845ND
2015-02-105802-048-0810ND
2015-03-125802-003-0815ND
2015-03-125802-016-07451.70 ppb
2015-03-255802-048-1115ND
2015-04-145802-016-09501.70 ppb
2015-04-145802-048-1030ND
2015-04-215802-018-1000ND
2015-04-225802-003-1030ND
2015-04-225802-028-1100ND
2015-04-225802-038-1340ND
2015-05-055802-048-0820ND
2015-05-065802-016-07301.50 ppb
2015-06-045802-016-08401.40 ppb
2015-06-105802-048-0930ND
2015-06-165802-003-0920ND
2015-07-025802-003-0830ND
2015-07-145802-019-0900ND
2015-07-155802-017-0945ND
2015-07-155802-042-0900ND
2015-07-165802-038-0830ND
2015-07-205802-028-0800ND
2015-07-215802-048-0800ND
2015-07-235802-016-08001.70 ppb
2015-08-035802-028-1200ND
2015-08-045802-006-0800ND
2015-08-045802-018-0730ND
2015-08-065802-029-0930ND
2015-08-115802-002-0800ND
2015-08-115802-048-0950ND
2015-08-125802-019-1015ND
2015-08-255802-003-0830ND
2015-08-255802-016-08101.60 ppb
2015-09-035802-048-0830ND
2015-09-105802-003-0750ND
2015-09-105802-016-06501.70 ppb
2015-10-015802-038-0825ND
2015-10-015802-042-0930ND
2015-10-065802-028-0735ND
2015-10-085802-048-0810ND
2015-10-135802-003-0940ND
2015-10-135802-016-09151.40 ppb
2015-11-115802-003-0740ND
2015-11-115802-016-09201.40 ppb
2015-11-115802-048-0850ND
2015-12-025802-048-1020ND
2015-12-085802-003-0915ND
2016-01-045802-038-1225ND
2016-01-055802-019-0945ND
2016-01-065802-016-08351.10 ppb
2016-01-065802-042-0800ND
2016-01-115802-048-1230ND
2016-01-125802-003-0830ND
2016-01-125802-017-0800ND
2016-01-125802-028-0930ND
2016-02-035802-003-1000ND
2016-02-045802-016-09101.40 ppb
2016-03-075802-016-09101.60 ppb
2016-04-045802-042-0930ND
2016-04-055802-038-0820ND
2016-04-135802-003-1010ND
2016-04-145802-016-08201.50 ppb
2016-04-145802-018-0750ND
2016-04-205802-028-0810ND
2016-04-215802-042-0650ND
2016-04-225802-042-0800ND
2016-05-045802-042-0825ND
2016-05-055802-016-08401.70 ppb
2016-06-085802-016-08551.90 ppb
2016-07-055802-038-0700ND
2016-07-065802-003-1045ND
2016-07-065802-016-12451.60 ppb
2016-07-075802-035-0910ND
2016-07-145802-042-0945ND
2016-07-195802-019-0900ND
2016-07-195802-028-0840ND
2016-07-265802-017-0850ND
2016-08-025802-033-0830ND
2016-08-105802-016-13002.20 ppb
2016-08-105802-017-1230ND
2016-08-105802-031-1330ND
2016-08-165802-021-0850ND
2016-08-165802-023-0930ND
2016-08-185802-046-0820ND
2016-09-135802-016-08202.10 ppb
2016-10-065802-038-0940ND
2016-10-105802-042-1420ND
2016-10-185802-003-0730ND
2016-10-185802-003-0800ND
2016-10-185802-028-0800ND
2016-10-205802-016-08001.80 ppb
2016-11-015802-016-09301.40 ppb
2016-11-105802-041-0710ND
2016-12-155802-016-09301.20 ppb
2017-01-055802-038-0910ND
2017-01-055802-042-0715ND
2017-01-125802-003-1115ND
2017-01-125802-017-1320ND
2017-01-125802-048-0955ND
2017-01-175802-016-09151.30 ppb
2017-02-095802-016-08551.40 ppb
2017-04-115802-016-08101.50 ppb
2017-04-115802-028-0630ND
2017-04-185802-018-0800ND
2017-05-085802-016-10201.90 ppb
2017-07-065802-042-0700ND
2017-07-115802-028-0930ND
2017-07-115802-038-0730ND
2017-07-125802-003-0950ND
2017-07-125802-017-0800ND
2017-07-135802-019-0755ND
2017-07-275802-016-07002.00 ppb
2017-08-015802-009-0720ND
2017-08-095802-048-1350ND
2017-08-105802-025-0715ND
2017-08-105802-040-0640ND
2017-08-145802-003-1315ND
2017-08-145802-012-1415ND
2017-08-145802-016-13401.90 ppb
2017-09-125802-016-08201.70 ppb
2017-10-035802-042-0740ND
2017-10-055802-038-0715ND
2017-10-095802-003-0850ND
2017-10-095802-028-0830ND
2017-10-105802-016-07301.70 ppb
2017-11-135802-016-08001.60 ppb
2017-12-125802-016-08101.50 ppb
2018-01-115802-038-0740ND
2018-01-165802-016-08451.40 ppb
2018-01-165802-048-1025ND
2018-02-125802-016-07501.80 ppb
2018-04-055802-038-0730ND
2018-04-105802-016-07351.30 ppb
2018-05-155802-016-08302.00 ppb
2018-07-115802-016-09152.00 ppb
2018-08-075802-018-1030ND
2018-08-075802-019-0840ND
2018-08-095802-002-0800ND
2018-08-095802-006-0735ND
2018-08-145802-029-0750ND
2018-09-255802-028-0700ND
2018-10-025802-038-0740ND
2018-10-025802-042-0700ND
2018-10-095802-016-08501.80 ppb
2019-01-035802-042-0800ND
2019-01-085802-016-09451.40 ppb
2019-01-085802-038-0730ND
2019-04-025802-016-08301.70 ppb
2019-04-025802-038-0800ND
2019-04-025802-042-0900ND
2019-07-015802-016-09202.00 ppb
2019-07-025802-038-0810ND
2019-07-025802-042-0700ND
2019-08-155802-023-0920ND
2019-08-205802-021-1010ND
2019-08-205802-033-0805ND
2019-08-215802-041-1325ND
2019-10-025802-038-1505ND
2019-10-025802-042-1400ND
2019-10-035802-016-09002.10 ppb