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EWG's Tap Water Database — 2021 UPDATE

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Trichloroethylene

Locust Valley 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

 

150

Samples

0

Samples exceeding legal limit (MCL)

39

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.127 ppb317ND - 0.610 ppb
2015ND100ND
20160.208 ppb3311ND - 0.730 ppb
20170.187 ppb237ND - 0.760 ppb
20180.205 ppb299ND - 0.720 ppb
20190.144 ppb245ND - 0.800 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
2014-01-141401530-002-POCSND
2014-01-141401530-003-POCS0.500 ppb
2014-01-211401867-001-POCSND
2014-01-281401B19-001-POCSND
2014-02-041402057-001-POCS0.600 ppb
2014-03-251404038-001-POCSND
2014-04-011404038-002-POCSND
2014-04-141404990-001-POCSND
2014-04-211404E83-001-POCS0.610 ppb
2014-06-301406M11-002-POCSND
2014-07-291407K05-001-POCS0.520 ppb
2014-08-181408B71-002-POCSND
2014-08-251408H39-001-POCSND
2014-08-261408I37-002-POCSND
2014-08-261408I37-001-POCS0.600 ppb
2014-09-101409740-002-POCSND
2014-09-101409749-001-POCS0.540 ppb
2014-09-171409D34-001-POCSND
2014-09-171409D32-001-POCSND
2014-09-231409I18-02-POCSND
2014-09-231409I18-002-POCSND
2014-09-241409I49-001-POCSND
2014-10-011410013-001-POCSND
2014-10-011410013-002-POCSND
2014-10-131410838-001-POCSND
2014-10-131410838-002-POCSND
2014-10-201410C68-001-POCSND
2014-10-301410K24-001-POCSND
2014-10-301410K24-002-POCSND
2014-11-171411A56-001-POCS0.580 ppb
2014-12-091412671-002-POCSND
2015-01-051501067-001-POCSND
2015-01-121501548-001-POCSND
2015-01-141501747-001-POCSND
2015-01-141501747-002-POCSND
2015-02-111502661-002-POCSND
2015-04-071504381-002-POCSND
2015-04-081504522-002-POCSND
2015-04-081504522-001-POCSND
2015-04-141504968-002-POCSND
2015-04-201504E35-001-POCSND
2016-01-051601125-002-POCND
2016-01-051601125-001-POC0.660 ppb
2016-01-061601266-002-POCND
2016-01-111601539-001-POCND
2016-01-121601657-001-POCND
2016-02-021602109-002-POCND
2016-02-021602109-003-POCND
2016-02-101602805-001-POC0.500 ppb
2016-03-141603A46-001-POC0.600 ppb
2016-04-041604198-002-POCND
2016-04-041604198-001-POCND
2016-04-061604482-001ND
2016-04-061604482-002-POC0.620 ppb
2016-04-121604A67-002-POCND
2016-05-031605141-002-POCND
2016-05-041605297-002-POCND
2016-05-041605297-001-POC0.650 ppb
2016-07-051607162-002-POCND
2016-07-111607746-001-POC0.730 ppb
2016-08-041608502-002-POCND
2016-08-041608502-003-POC0.620 ppb
2016-08-171608G37-001-POCND
2016-08-231608L71-001-POCND
2016-08-301608S10-001-POCND
2016-09-061609219-003-POC0.720 ppb
2016-09-061609219-002-POCND
2016-10-03701027002-POCND
2016-10-03701027003-POCND
2016-10-03701027001-POCND
2016-10-05701210002-POC0.620 ppb
2016-11-01703388002-POC0.600 ppb
2016-11-01703388001-POCND
2016-12-01705763001-POC0.540 ppb
2017-01-04708263002-POCND
2017-01-04708263001-POCND
2017-01-10708707002-POCND
2017-01-10708707001-POC0.580 ppb
2017-01-23709647001-POCND
2017-02-137011227001-POC0.580 ppb
2017-04-037014711002-POCND
2017-04-037014711001-POCND
2017-04-047014822001-POC0.530 ppb
2017-04-047014822002-POCND
2017-04-247016689001-POCND
2017-05-0370176230010.760 ppb
2017-08-227027930001-POCND
2017-08-287028361001-POCND
2017-08-307028531001-POCND
2017-09-057028851001-POC0.640 ppb
2017-09-117029447001-POCND
2017-10-027031534001-POC0.580 ppb
2017-10-027031534002-POCND
2017-10-107032367001-POCND
2017-10-237033738002-POCND
2017-11-137035523001-POC0.630 ppb
2017-11-207036171001-POCND
2018-01-027039447001-POC0.640 ppb
2018-01-0270394470010.640 ppb
2018-01-087039782001-POCND
2018-01-167040417001-POCND
2018-01-167040417002-POCND
2018-01-237041066001-POCND
2018-02-0770422050010.600 ppb
2018-04-037046983002ND
2018-04-0370469830010.630 ppb
2018-04-237049233001ND
2018-04-247049376001ND
2018-05-077050702003ND
2018-08-037060300001-POC0.670 ppb
2018-08-077060621001-POCND
2018-08-137061326001-POCND
2018-08-217062227001-POCND
2018-09-047063494003ND
2018-09-0470634940010.700 ppb
2018-09-107064177001-POCND
2018-10-037066637001ND
2018-10-097067250001ND
2018-10-1070674300010.670 ppb
2018-10-117067660002ND
2018-11-017069657001ND
2018-11-067070105002ND
2018-11-077070276001ND
2018-11-0970706640010.680 ppb
2018-12-03N-016510.720 ppb
2018-12-057072903002ND
2019-01-077075684001ND
2019-01-087075827002ND
2019-01-157076591001ND
2019-01-2270772230010.730 ppb
2019-01-287077683001ND
2019-01-287077683002ND
2019-02-067078576002ND
2019-04-027084211003ND
2019-04-0270842110010.660 ppb
2019-04-087084930001ND
2019-04-087084930002ND
2019-05-077088231001ND
2019-05-077088231002ND
2019-05-0870885560010.800 ppb
2019-05-137089227001ND
2019-07-0870966700010.620 ppb
2019-08-217062227001-POCND
2019-09-0370103457002-POCND
2019-09-0370103457001-POC0.640 ppb
2019-09-0970104153002-POCND
2019-09-0970104153001ND
2019-10-0170106790001ND
2019-10-1570108388001ND
2019-10-2870109853001ND