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EWG's Tap Water Database — 2021 UPDATE

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Trichloroethylene

Oyster Bay Water District

Trichloroethylene, an industrial solvent and common groundwater pollutant, damages the immune system, harms the developing fetus and causes cancer. Read More.

Trichloroethylene was once commonly used to remove grease from metal parts, such as steel pipes and engines, and as a solvent in dry cleaning and carpet cleaning products. Drinking trichloroethylene-contaminated drinking water has been linked with birth defects, leukemia, and liver and kidney damage. Trichloroethylene is highly volatile and can enter indoor air through water in pipes. If trichloroethylene is present, people can inhale it while bathing, washing dishes and doing other household activities that involve water.

Click here to read more about carcinogenic VOCs.

MORE ABOUT THIS CONTAMINANT

 

180

Samples

0

Samples exceeding legal limit (MCL)

37

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.116 ppb315ND - 0.890 ppb
20150.103 ppb162ND - 0.870 ppb
20160.165 ppb315ND - 1.20 ppb
20170.266 ppb4010ND - 1.50 ppb
20180.231 ppb367ND - 1.60 ppb
20190.285 ppb268ND - 1.50 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.4 ppb

The EWG Health Guideline of 0.4 ppb for trichloroethylene was defined by the state of Minnesota as health risk limit, the concentration of a contaminant that can be consumed with little or no risk to health. This health guideline protects against harm to the developing fetus and damage to the immune system.

EPA Maximum Contaminant
Level (MCL) 5 ppb

The legal limit for trichloroethylene, established in 1987, 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 and harm to the developing fetus.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-211401843-001-POCSND
2014-02-111402492-001-POCSND
2014-03-051403199-001-POCSND
2014-03-181403C52-001-POCS0.520 ppb
2014-03-181403C52-004-POCSND
2014-03-1803C52-005-POCSND
2014-03-181403C52-003-POCSND
2014-03-181403C52-002-POCS0.720 ppb
2014-04-081404646-001-POCSND
2014-04-221404F72-004-POCSND
2014-04-221404F65-001ND
2014-04-221404F72-001-POCSND
2014-04-221404F72-002-POCSND
2014-04-221404F72-003-POCS0.890 ppb
2014-05-271405J26-001-POCSND
2014-06-171406B90-001-POCSND
2014-07-231407G76-001-POCSND
2014-08-181408B68-007-POCSND
2014-09-101409716-001-POCSND
2014-09-231409H36-004-POCSND
2014-09-231409H36-003-POCS0.740 ppb
2014-09-231409H36-005-POCSND
2014-09-231409H36-001-POCSND
2014-09-231409H36-002-POCSND
2014-10-301410J92-001-POCSND
2014-12-031412213-001-POCSND
2014-12-031412213-005-POCSND
2014-12-031412213-003-POCS0.740 ppb
2014-12-031412213-002-POCSND
2014-12-031412213-004-POCSND
2014-12-161412B34-001-POCSND
2015-01-201501A62-001-POCSND
2015-02-111502655-001-POCSND
2015-03-041503213-001-POCSND
2015-03-041503213-003-POCS0.870 ppb
2015-03-041503213-002-POCSND
2015-03-041503213-004-POCSND
2015-03-041503213-005-POCSND
2015-03-091503478-001-POCSND
2015-04-011504003-001-POCSND
2015-05-181505C34-001-POCSND
2015-05-201505E59-002-POCSND
2015-05-201505E59-001-POCSND
2015-05-201505E59-003-POCSND
2015-05-201505E59-004-POCS0.780 ppb
2015-05-201505E59-005-POCSND
2015-06-031506225-001-POCSND
2016-01-271601H95-001ND
2016-02-241502E28-001ND
2016-03-151603B65-001ND
2016-03-301603O03-0010.500 ppb
2016-03-301603O03-004ND
2016-03-301603O03-005ND
2016-03-301603O03-0021.14 ppb
2016-03-301603O03-003ND
2016-04-191604G74-001ND
2016-06-151606E92-001ND
2016-06-151606E92-004ND
2016-06-151606E92-002ND
2016-06-151606E92-0031.12 ppb
2016-06-151606E92-005ND
2016-06-241605L69-001ND
2016-07-191607E62-001ND
2016-08-241608N05-001ND
2016-09-131609895-001-POCND
2016-09-261609L71-004-POCND
2016-09-261609L71-005-POCND
2016-09-261609L71-003-POC1.15 ppb
2016-09-291609L71-002-POCND
2016-09-291609L71-001-POCND
2016-10-24702735006ND
2016-11-07703821001-POCND
2016-11-21705054005ND
2016-11-21705054002ND
2016-11-21705054004ND
2016-11-217050540031.20 ppb
2016-11-21705054001ND
2016-12-19707151001ND
2017-01-18709324001-POCND
2017-02-13701114001-POCND
2017-03-207013675001-POCND
2017-03-297014366005-POCND
2017-03-297014366003-POC0.690 ppb
2017-03-297014366001-POCND
2017-03-2970143660041.50 ppb
2017-03-297014366002-POCND
2017-04-177015995001ND
2017-06-207021777001-POCSND
2017-06-217021951010-POCND
2017-06-217021951004-POC0.520 ppb
2017-06-217021951008-POCND
2017-06-217021951002-POCND
2017-06-217021951006-POC1.50 ppb
2017-06-277022475004-POCS1.30 ppb
2017-06-277022475002-POCSND
2017-06-277022475003-POCS0.510 ppb
2017-06-277022475005-POCSND
2017-06-277022475001-POCSND
2017-07-252902844-POCSND
2017-08-227027829001-POCND
2017-09-197030333001-POCND
2017-09-277031121002-POC0.520 ppb
2017-09-277031121003-POC1.30 ppb
2017-09-277031121001-POCSND
2017-09-277031121005-POCND
2017-09-277031121004-POCND
2017-10-117032516001-POCND
2017-11-287036579001-POCND
2017-12-207038629001-POCND
2017-12-277039161003-POCND
2017-12-277039161005-POC1.30 ppb
2017-12-277039108005-POCND
2017-12-277039108001-POCND
2017-12-277039108003-POCND
2017-12-277039108004-POCND
2017-12-277039108002-POC1.50 ppb
2017-12-277039161004-POCND
2017-12-277039161001-POCND
2018-01-237041065001-POCND
2018-02-207043329001ND
2018-03-057044397005-POCND
2018-03-057044397004-POCND
2018-03-057044397001ND
2018-03-057044397002ND
2018-03-057044397001-POCND
2018-03-057044397004ND
2018-03-057044397003-POC1.40 ppb
2018-03-057044397005ND
2018-03-0570443970031.40 ppb
2018-03-057044397002-POCND
2018-03-127045041001ND
2018-04-167048487001ND
2018-05-227019203001-POCND
2018-06-187055214001ND
2018-06-197055367003-POC1.40 ppb
2018-06-197055367002-POC0.550 ppb
2018-06-197055367004-POCND
2018-06-197055367005-POCND
2018-06-197055367001-POCND
2018-07-107057586001-POCND
2018-09-047063482001ND
2018-09-107064169002ND
2018-09-107064169004ND
2018-09-107064169005ND
2018-09-1070641690031.40 ppb
2018-09-107064169001ND
2018-10-027066425001ND
2018-11-057069977001ND
2018-12-117073536001ND
2018-12-187074229004ND
2018-12-187074229001ND
2018-12-1870742290020.580 ppb
2018-12-187074229005ND
2018-12-1870742290031.60 ppb
2019-01-157076659001ND
2019-02-257080524001ND
2019-03-057081264001ND
2019-03-0670815380020.600 ppb
2019-03-067081538004ND
2019-03-067081538005ND
2019-03-0670815380031.50 ppb
2019-03-067081538001ND
2019-04-087084888001ND
2019-05-217090317001ND
2019-06-177093915004ND
2019-06-1770939150031.50 ppb
2019-06-177093915001ND
2019-06-177093915005ND
2019-06-1770939150020.610 ppb
2019-06-187094101001ND
2019-07-1670976740010.600 ppb
2019-08-2070101965001ND
2019-09-1770105249001ND
2019-09-1870105360005ND
2019-09-1870105360001ND
2019-09-18701053600031.40 ppb
2019-09-1870105360004ND
2019-09-18701053600020.550 ppb
2019-10-1570108433001ND
2019-11-14701114240010.640 ppb