trans-1,2-Dichloroethylene
Lubbock Public Water System
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 | 2 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2014-01-22 | Q1401929002 | ND |
| 2014-02-12 | Q1404338003 | ND |
| 2015-02-03 | Q1504173001 | ND |
| 2015-02-11 | Q1505820001 | ND |
| 2015-04-07 | Q1513290006 | ND |
| 2016-02-03 | Q1604716004 | ND |
| 2016-02-03 | Q1604716011 | ND |
| 2016-04-06 | Q1613543001 | ND |
| 2017-02-08 | Q1705565007 | ND |
| 2017-08-10 | Q1734366011 | ND |
| 2017-09-27 | Q1746701005 | ND |
| 2018-02-07 | Q1805018014 | ND |
| 2018-03-26 | Q1812603005 | ND |
| 2018-04-19 | Q1816161007 | ND |
| 2019-02-14 | Q1906913007 | ND |
| 2019-04-16 | Q1915160003 | ND |
| 2019-04-16 | Q1915160005 | ND |