trans-1,2-Dichloroethylene
Locust Valley Water District
1,2-Dichloroethylene, a neurotoxic solvent, exists in two different forms: trans-1,2-dichloroethylene and cis-1,2-dichloroethylene. A mixture of the two forms is used to manufacture other solvents and chemical products.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 31 | 0 | ND |
2015 | ND | 10 | 0 | ND |
2016 | ND | 33 | 0 | ND |
2017 | ND | 23 | 0 | ND |
2018 | ND | 29 | 0 | ND |
2019 | ND | 24 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 60 ppb
The EWG Health Guideline of 60 ppb for trans-1,2-dichloroethylene 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 harm to internal organs.
EPA Maximum Contaminant
Level (MCL) 100 ppb
The legal limit for trans-1,2-dichloroethylene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-01-14 | 1401530-002-POCS | ND |
2014-01-14 | 1401530-003-POCS | ND |
2014-01-21 | 1401867-001-POCS | ND |
2014-01-28 | 1401B19-001-POCS | ND |
2014-02-04 | 1402057-001-POCS | ND |
2014-03-25 | 1404038-001-POCS | ND |
2014-04-01 | 1404038-002-POCS | ND |
2014-04-14 | 1404990-001-POCS | ND |
2014-04-21 | 1404E83-001-POCS | ND |
2014-06-30 | 1406M11-002-POCS | ND |
2014-07-29 | 1407K05-001-POCS | ND |
2014-08-18 | 1408B71-002-POCS | ND |
2014-08-25 | 1408H39-001-POCS | ND |
2014-08-26 | 1408I37-002-POCS | ND |
2014-08-26 | 1408I37-001-POCS | ND |
2014-09-10 | 1409740-002-POCS | ND |
2014-09-10 | 1409749-001-POCS | ND |
2014-09-17 | 1409D34-001-POCS | ND |
2014-09-17 | 1409D32-001-POCS | ND |
2014-09-23 | 1409I18-02-POCS | ND |
2014-09-23 | 1409I18-002-POCS | ND |
2014-09-24 | 1409I49-001-POCS | ND |
2014-10-01 | 1410013-001-POCS | ND |
2014-10-01 | 1410013-002-POCS | ND |
2014-10-13 | 1410838-001-POCS | ND |
2014-10-13 | 1410838-002-POCS | ND |
2014-10-20 | 1410C68-001-POCS | ND |
2014-10-30 | 1410K24-001-POCS | ND |
2014-10-30 | 1410K24-002-POCS | ND |
2014-11-17 | 1411A56-001-POCS | ND |
2014-12-09 | 1412671-002-POCS | ND |
2015-01-05 | 1501067-001-POCS | ND |
2015-01-12 | 1501548-001-POCS | ND |
2015-01-14 | 1501747-001-POCS | ND |
2015-01-14 | 1501747-002-POCS | ND |
2015-02-11 | 1502661-002-POCS | ND |
2015-04-07 | 1504381-002-POCS | ND |
2015-04-08 | 1504522-002-POCS | ND |
2015-04-08 | 1504522-001-POCS | ND |
2015-04-14 | 1504968-002-POCS | ND |
2015-04-20 | 1504E35-001-POCS | ND |
2016-01-05 | 1601125-001-POC | ND |
2016-01-05 | 1601125-002-POC | ND |
2016-01-06 | 1601266-002-POC | ND |
2016-01-11 | 1601539-001-POC | ND |
2016-01-12 | 1601657-001-POC | ND |
2016-02-02 | 1602109-002-POC | ND |
2016-02-02 | 1602109-003-POC | ND |
2016-02-10 | 1602805-001-POC | ND |
2016-03-14 | 1603A46-001-POC | ND |
2016-04-04 | 1604198-001-POC | ND |
2016-04-04 | 1604198-002-POC | ND |
2016-04-06 | 1604482-002-POC | ND |
2016-04-06 | 1604482-001 | ND |
2016-04-12 | 1604A67-002-POC | ND |
2016-05-03 | 1605141-002-POC | ND |
2016-05-04 | 1605297-001-POC | ND |
2016-05-04 | 1605297-002-POC | ND |
2016-07-05 | 1607162-002-POC | ND |
2016-07-11 | 1607746-001-POC | ND |
2016-08-04 | 1608502-002-POC | ND |
2016-08-04 | 1608502-003-POC | ND |
2016-08-17 | 1608G37-001-POC | ND |
2016-08-23 | 1608L71-001-POC | ND |
2016-08-30 | 1608S10-001-POC | ND |
2016-09-06 | 1609219-003-POC | ND |
2016-09-06 | 1609219-002-POC | ND |
2016-10-03 | 701027001-POC | ND |
2016-10-03 | 701027003-POC | ND |
2016-10-03 | 701027002-POC | ND |
2016-10-05 | 701210002-POC | ND |
2016-11-01 | 703388001-POC | ND |
2016-11-01 | 703388002-POC | ND |
2016-12-01 | 705763001-POC | ND |
2017-01-04 | 708263002-POC | ND |
2017-01-04 | 708263001-POC | ND |
2017-01-10 | 708707002-POC | ND |
2017-01-10 | 708707001-POC | ND |
2017-01-23 | 709647001-POC | ND |
2017-02-13 | 7011227001-POC | ND |
2017-04-03 | 7014711001-POC | ND |
2017-04-03 | 7014711002-POC | ND |
2017-04-04 | 7014822001-POC | ND |
2017-04-04 | 7014822002-POC | ND |
2017-04-24 | 7016689001-POC | ND |
2017-05-03 | 7017623001 | ND |
2017-08-22 | 7027930001-POC | ND |
2017-08-28 | 7028361001-POC | ND |
2017-08-30 | 7028531001-POC | ND |
2017-09-05 | 7028851001-POC | ND |
2017-09-11 | 7029447001-POC | ND |
2017-10-02 | 7031534002-POC | ND |
2017-10-02 | 7031534001-POC | ND |
2017-10-10 | 7032367001-POC | ND |
2017-10-23 | 7033738002-POC | ND |
2017-11-13 | 7035523001-POC | ND |
2017-11-20 | 7036171001-POC | ND |
2018-01-02 | 7039447001 | ND |
2018-01-02 | 7039447001-POC | ND |
2018-01-08 | 7039782001-POC | ND |
2018-01-16 | 7040417002-POC | ND |
2018-01-16 | 7040417001-POC | ND |
2018-01-23 | 7041066001-POC | ND |
2018-02-07 | 7042205001 | ND |
2018-04-03 | 7046983002 | ND |
2018-04-03 | 7046983001 | ND |
2018-04-23 | 7049233001 | ND |
2018-04-24 | 7049376001 | ND |
2018-05-07 | 7050702003 | ND |
2018-08-03 | 7060300001-POC | ND |
2018-08-07 | 7060621001-POC | ND |
2018-08-13 | 7061326001-POC | ND |
2018-08-21 | 7062227001-POC | ND |
2018-09-04 | 7063494003 | ND |
2018-09-04 | 7063494001 | ND |
2018-09-10 | 7064177001-POC | ND |
2018-10-03 | 7066637001 | ND |
2018-10-09 | 7067250001 | ND |
2018-10-10 | 7067430001 | ND |
2018-10-11 | 7067660002 | ND |
2018-11-01 | 7069657001 | ND |
2018-11-06 | 7070105002 | ND |
2018-11-07 | 7070276001 | ND |
2018-11-09 | 7070664001 | ND |
2018-12-03 | N-01651 | ND |
2018-12-05 | 7072903002 | ND |
2019-01-07 | 7075684001 | ND |
2019-01-08 | 7075827002 | ND |
2019-01-15 | 7076591001 | ND |
2019-01-22 | 7077223001 | ND |
2019-01-28 | 7077683001 | ND |
2019-01-28 | 7077683002 | ND |
2019-02-06 | 7078576002 | ND |
2019-04-02 | 7084211001 | ND |
2019-04-02 | 7084211003 | ND |
2019-04-08 | 7084930002 | ND |
2019-04-08 | 7084930001 | ND |
2019-05-07 | 7088231001 | ND |
2019-05-07 | 7088231002 | ND |
2019-05-08 | 7088556001 | ND |
2019-05-13 | 7089227001 | ND |
2019-07-08 | 7096670001 | ND |
2019-08-21 | 7062227001-POC | ND |
2019-09-03 | 70103457001-POC | ND |
2019-09-03 | 70103457002-POC | ND |
2019-09-09 | 70104153001 | ND |
2019-09-09 | 70104153002-POC | ND |
2019-10-01 | 70106790001 | ND |
2019-10-15 | 70108388001 | ND |
2019-10-28 | 70109853001 | ND |