trans-1,2-Dichloroethylene
City of Avondale
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 19 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 6 | 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 |
|---|---|---|
| 2014-01-27 | 4012115-01V | ND |
| 2014-01-27 | 4012114-01V | ND |
| 2014-01-27 | 4012114-01 | ND |
| 2014-01-28 | 4012237-01V | ND |
| 2014-01-28 | 4012236-01V | ND |
| 2014-01-29 | 4012322-01 | ND |
| 2014-02-13 | 4021148-01V | ND |
| 2014-05-20 | 4051823-01V | ND |
| 2014-05-20 | 4051717-01V | ND |
| 2014-05-20 | 4051718-01V | ND |
| 2014-05-20 | 4051822-01 | ND |
| 2014-05-22 | 4052004-01V | ND |
| 2014-05-22 | 4052002-01V | ND |
| 2014-08-06 | 4080590-01V | ND |
| 2014-08-06 | 4080578-01V | ND |
| 2014-08-07 | 4080711-01V | ND |
| 2014-08-07 | 4080712-01V | ND |
| 2014-08-07 | 4080710-01 | ND |
| 2014-08-07 | 4080708-01 | ND |
| 2015-12-03 | 5120427-01 | ND |
| 2016-08-16 | 6081529-02V | ND |
| 2016-08-16 | 6081529-01V | ND |
| 2016-08-16 | 6081529-03V | ND |
| 2016-08-16 | 6081529-04V | ND |
| 2016-08-16 | 6081529-05V | ND |
| 2016-08-16 | 6081529-06V | ND |
| 2017-02-09 | 7020939-02 | ND |
| 2018-04-23 | 18D2315-01 | ND |
| 2019-02-07 | 19B0770-02 | ND |
| 2019-06-26 | 19F2790-01 | ND |
| 2019-06-26 | 19F2790-05 | ND |
| 2019-06-26 | 19F2790-04 | ND |
| 2019-06-26 | 19F2790-03 | ND |
| 2019-06-26 | 19F2790-02 | ND |