trans-1,2-Dichloroethylene
North Baldwin Utilities
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 5 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 7 | 0 | ND |
| 2017 | ND | 7 | 0 | ND |
| 2018 | ND | 6 | 0 | ND |
| 2019 | ND | 10 | 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 |
|---|---|---|
| 2014-02-27 | 14E0149-1V | ND |
| 2014-02-27 | 14B0470-1V | ND |
| 2014-02-27 | 14B0472-1V | ND |
| 2014-02-27 | 14B0474-1V | ND |
| 2014-05-08 | 14E0149-2 | ND |
| 2015-11-04 | 15K0099-5V | ND |
| 2015-11-04 | 15K0099-6V | ND |
| 2015-11-04 | 15K0099-7V | ND |
| 2016-07-12 | 16G0014-5V | ND |
| 2016-07-12 | 16G0014-3V | ND |
| 2016-07-12 | 16G0014-1V | ND |
| 2016-07-12 | 16G0014-4V | ND |
| 2016-07-12 | 16G0014-8V | ND |
| 2016-07-12 | 16G0014-7V | ND |
| 2016-11-03 | 16K0086-1V | ND |
| 2017-05-02 | 17E0077-4 | ND |
| 2017-06-15 | 17F0305-4 | ND |
| 2017-07-26 | 17G0487-4 | ND |
| 2017-10-31 | 2064353011 | ND |
| 2017-10-31 | 2064353019 | ND |
| 2017-10-31 | 2064353015 | ND |
| 2017-10-31 | 2064353005 | ND |
| 2018-03-23 | 2073176001VOC | ND |
| 2018-05-16 | 2076512-3 | ND |
| 2018-08-14 | 18080395-001A | ND |
| 2018-10-15 | 18100512-002A | ND |
| 2018-10-15 | 18100512-001A | ND |
| 2018-10-15 | 18100512-003A | ND |
| 2019-01-15 | 19010476-005A | ND |
| 2019-01-15 | 19010476-002A | ND |
| 2019-01-15 | 19010476-004A | ND |
| 2019-01-15 | 19010476-006A | ND |
| 2019-01-15 | 19010476-003A | ND |
| 2019-01-15 | 19010476-001A | ND |
| 2019-05-29 | 20105932001_IVOC | ND |
| 2019-05-29 | 20105932001_IVOC | ND |
| 2019-07-10 | 20112361001_IVOC | ND |
| 2019-10-24 | 20127467001_IVOC | ND |