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EWG's Tap Water Database — 2021 UPDATE

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Tetrachloroethylene (perchloroethylene)

East Valley Water District

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

 

314

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND420ND
2015ND500ND
2016ND590ND
2017ND480ND
20180.0514 ppb564ND - 1.10 ppb
2019ND590ND

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
2014-01-093761-034-0820ND
2014-01-093761-035-0820ND
2014-01-093761-038-0820ND
2014-01-093761-047-0820ND
2014-02-053761-034-0815ND
2014-02-053761-035-0815ND
2014-02-053761-038-0815ND
2014-02-053761-047-0815ND
2014-02-213761-036-0745ND
2014-04-173761-034-0842ND
2014-04-173761-035-0842ND
2014-04-173761-038-0842ND
2014-04-173761-047-0842ND
2014-05-063761-034-1145ND
2014-05-063761-035-1145ND
2014-05-063761-038-1145ND
2014-05-063761-047-1145ND
2014-05-133761-047-0915ND
2014-05-203761-047-0923ND
2014-05-283761-047-0904ND
2014-06-103761-034-1000ND
2014-06-103761-035-1000ND
2014-06-103761-038-1000ND
2014-06-103761-047-0918ND
2014-07-023761-034-1145ND
2014-07-023761-035-1145ND
2014-07-023761-038-1145ND
2014-07-023761-047-1145ND
2014-07-233761-028-1130ND
2014-09-033761-034-0840ND
2014-09-033761-035-0840ND
2014-09-033761-038-0840ND
2014-09-033761-047-0840ND
2014-10-073761-034-1030ND
2014-10-073761-035-1030ND
2014-10-073761-038-1030ND
2014-10-073761-047-1030ND
2014-10-223761-031-0808ND
2014-12-033761-034-0900ND
2014-12-033761-035-0900ND
2014-12-033761-038-0900ND
2014-12-033761-047-0900ND
2015-01-083761-034-1000ND
2015-01-083761-035-1000ND
2015-01-083761-038-1000ND
2015-01-083761-047-1000ND
2015-02-043761-034-0914ND
2015-02-043761-035-0918ND
2015-02-043761-038-0926ND
2015-02-043761-047-0928ND
2015-02-103761-031-0725ND
2015-02-253761-016-0812ND
2015-03-053761-034-0815ND
2015-03-053761-035-0815ND
2015-03-053761-038-0815ND
2015-03-053761-047-0815ND
2015-03-243761-036-0745ND
2015-04-093761-034-0845ND
2015-04-093761-035-0845ND
2015-04-093761-038-0845ND
2015-04-093761-047-0845ND
2015-05-073761-034-0800ND
2015-05-073761-035-0800ND
2015-05-073761-038-0800ND
2015-05-073761-047-0800ND
2015-06-043761-034-0830ND
2015-06-043761-035-0830ND
2015-06-043761-038-0830ND
2015-06-043761-047-0830ND
2015-06-233761-016-0927ND
2015-07-023761-034-0900ND
2015-07-023761-035-0900ND
2015-07-023761-038-0900ND
2015-07-023761-047-0900ND
2015-08-063761-034-0930ND
2015-08-063761-035-0930ND
2015-08-063761-038-0930ND
2015-08-063761-047-0930ND
2015-09-143761-035-0820ND
2015-10-083761-034-1030ND
2015-10-083761-035-1030ND
2015-10-083761-038-1030ND
2015-10-083761-047-1030ND
2015-10-273761-035-1008ND
2015-11-053761-034-0830ND
2015-11-053761-035-0830ND
2015-11-053761-038-0830ND
2015-11-053761-047-0830ND
2015-12-023761-034-0900ND
2015-12-023761-035-0900ND
2015-12-023761-038-0900ND
2015-12-023761-047-0900ND
2016-01-053761-036-1003ND
2016-01-073761-034-0830ND
2016-01-073761-035-0830ND
2016-01-073761-038-0830ND
2016-01-073761-047-0830ND
2016-02-043761-034-0900ND
2016-02-043761-035-0900ND
2016-02-043761-038-0900ND
2016-02-043761-047-0900ND
2016-02-233761-016-0945ND
2016-02-233761-031-0955ND
2016-03-013761-015-0744ND
2016-03-013761-016-0829ND
2016-03-013761-017-1000ND
2016-03-013761-020-0924ND
2016-03-013761-021-0915ND
2016-03-013761-024-0855ND
2016-03-013761-031-0841ND
2016-03-013761-032-0806ND
2016-03-013761-033-0753ND
2016-03-013761-053-0820ND
2016-03-023761-039-0821ND
2016-03-023761-042-0747ND
2016-03-023761-046-0811ND
2016-03-023761-055-0913ND
2016-03-033761-019-0823ND
2016-03-033761-047-0505ND
2016-03-293761-034-0845ND
2016-03-293761-035-0845ND
2016-03-293761-038-0845ND
2016-03-293761-047-0845ND
2016-06-233761-034-0830ND
2016-06-233761-035-0830ND
2016-06-233761-038-0830ND
2016-06-233761-047-0830ND
2016-07-143761-034-0800ND
2016-07-143761-035-0800ND
2016-07-143761-038-0800ND
2016-07-143761-047-0800ND
2016-08-043761-034-0830ND
2016-08-043761-035-0830ND
2016-08-043761-038-0830ND
2016-08-043761-047-0830ND
2016-09-013761-034-0845ND
2016-09-013761-035-0845ND
2016-09-013761-038-0845ND
2016-09-013761-047-0845ND
2016-10-133761-034-0730ND
2016-10-133761-035-0730ND
2016-10-133761-038-0730ND
2016-10-133761-047-0730ND
2016-11-033761-034-0745ND
2016-11-033761-035-0745ND
2016-11-033761-038-0745ND
2016-11-033761-047-0745ND
2016-12-083761-034-0945ND
2016-12-083761-035-0945ND
2016-12-083761-038-0945ND
2016-12-083761-047-0945ND
2017-01-053761-034-0853ND
2017-01-053761-035-0857ND
2017-01-053761-036-0820ND
2017-01-053761-038-0907ND
2017-01-053761-047-0910ND
2017-02-033761-034-0900ND
2017-02-033761-035-0900ND
2017-02-033761-038-0900ND
2017-02-033761-047-0900ND
2017-02-143761-031-0747ND
2017-02-233761-016-0921ND
2017-03-013761-034-0750ND
2017-03-013761-035-0755ND
2017-03-013761-038-0805ND
2017-03-013761-047-0808ND
2017-04-063761-034-0730ND
2017-04-063761-035-0730ND
2017-04-063761-038-0730ND
2017-04-063761-047-0730ND
2017-05-113761-034-0745ND
2017-05-113761-035-0745ND
2017-05-113761-038-0745ND
2017-05-113761-047-0745ND
2017-06-083761-034-0830ND
2017-06-083761-035-0830ND
2017-06-083761-038-0830ND
2017-06-083761-047-0830ND
2017-07-073761-034-0800ND
2017-07-073761-035-0800ND
2017-07-073761-038-0800ND
2017-07-073761-047-0800ND
2017-08-043761-034-0000ND
2017-08-043761-035-0000ND
2017-08-043761-038-0000ND
2017-08-043761-047-0000ND
2017-10-063761-034-0730ND
2017-10-063761-035-0730ND
2017-10-063761-038-0730ND
2017-10-063761-047-0730ND
2017-11-093761-034-0830ND
2017-11-093761-035-0830ND
2017-11-093761-038-0830ND
2017-11-093761-047-0830ND
2017-12-053761-028-0850ND
2017-12-083761-034-0745ND
2017-12-083761-035-0745ND
2017-12-083761-038-0745ND
2017-12-083761-047-0745ND
2018-01-023761-038-07301.10 ppb
2018-01-053761-036-0752ND
2018-01-093761-038-08100.700 ppb
2018-01-193761-034-0715ND
2018-01-193761-035-0715ND
2018-01-193761-038-07150.500 ppb
2018-01-193761-047-0715ND
2018-01-263761-038-0728ND
2018-01-303761-047-0810ND
2018-02-063761-038-08550.580 ppb
2018-02-083761-034-0820ND
2018-02-083761-035-0820ND
2018-02-083761-038-0820ND
2018-02-083761-047-0820ND
2018-02-203761-031-0745ND
2018-02-223761-016-0940ND
2018-03-203761-034-0900ND
2018-03-203761-035-0900ND
2018-03-203761-038-0900ND
2018-03-203761-047-0900ND
2018-04-263761-034-0756ND
2018-04-263761-035-0756ND
2018-04-263761-038-0756ND
2018-04-263761-047-0756ND
2018-05-223761-034-0910ND
2018-05-223761-035-0910ND
2018-05-223761-038-0910ND
2018-05-223761-047-0910ND
2018-06-193761-034-0937ND
2018-06-193761-035-0937ND
2018-06-193761-038-0937ND
2018-06-193761-047-0937ND
2018-07-193761-034-0845ND
2018-07-193761-035-0845ND
2018-07-193761-038-0845ND
2018-07-193761-047-0845ND
2018-08-173761-034-0700ND
2018-08-173761-035-0700ND
2018-08-173761-038-0700ND
2018-08-173761-047-0700ND
2018-09-133761-034-0830ND
2018-09-133761-035-0830ND
2018-09-133761-038-0830ND
2018-09-133761-047-0830ND
2018-10-183761-034-0830ND
2018-10-183761-035-0830ND
2018-10-183761-038-0830ND
2018-10-183761-047-0830ND
2018-11-093761-034-0000ND
2018-11-093761-035-0000ND
2018-11-093761-038-0000ND
2018-11-093761-047-0000ND
2018-12-073761-034-0730ND
2018-12-073761-035-0730ND
2018-12-073761-038-0730ND
2018-12-073761-047-0730ND
2019-01-033761-034-0745ND
2019-01-033761-035-0745ND
2019-01-033761-036-0830ND
2019-01-033761-038-0745ND
2019-01-033761-047-0745ND
2019-02-073761-034-0800ND
2019-02-073761-035-0805ND
2019-02-073761-038-0815ND
2019-02-073761-047-0815ND
2019-03-053761-017-0807ND
2019-03-053761-020-0818ND
2019-03-053761-032-0750ND
2019-03-053761-033-0735ND
2019-03-123761-021-0808ND
2019-03-123761-024-0820ND
2019-03-123761-034-0752ND
2019-03-123761-035-0753ND
2019-03-123761-038-0754ND
2019-03-123761-042-0729ND
2019-03-123761-047-0753ND
2019-03-193761-015-0734ND
2019-03-193761-019-0825ND
2019-03-193761-031-0759ND
2019-03-193761-053-0751ND
2019-03-263761-039-0955ND
2019-03-263761-055-1014ND
2019-04-043761-034-0813ND
2019-04-043761-035-0816ND
2019-04-043761-038-0825ND
2019-04-043761-047-0830ND
2019-05-023761-034-0840ND
2019-05-023761-035-0845ND
2019-05-023761-038-0855ND
2019-05-023761-047-0858ND
2019-06-073761-034-0950ND
2019-06-073761-035-0945ND
2019-06-073761-038-0936ND
2019-06-073761-047-0954ND
2019-06-213761-046-0810ND
2019-07-053761-034-0815ND
2019-07-053761-035-0821ND
2019-07-053761-038-0835ND
2019-07-053761-047-0840ND
2019-08-013761-034-0909ND
2019-08-013761-035-0905ND
2019-08-013761-038-0857ND
2019-08-013761-047-0914ND
2019-09-263761-034-0810ND
2019-09-263761-035-0820ND
2019-09-263761-038-0840ND
2019-09-263761-047-0845ND
2019-11-083761-034-0812ND
2019-11-083761-035-0822ND
2019-11-083761-038-0843ND
2019-11-083761-047-0848ND
2019-12-053761-034-0829ND
2019-12-053761-035-0836ND
2019-12-053761-038-0847ND
2019-12-053761-047-0849ND