trans-1,2-Dichloroethylene
Sauk
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 | 15 | 0 | ND |
| 2015 | ND | 18 | 0 | ND |
| 2016 | ND | 10 | 0 | ND |
| 2017 | ND | 8 | 0 | ND |
| 2018 | ND | 8 | 0 | ND |
| 2019 | ND | 11 | 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 |
|---|---|---|
| 2014-01-21 | 1401933-001A | ND |
| 2014-02-04 | 1402096-001A | ND |
| 2014-03-04 | 1403083-001A | ND |
| 2014-04-08 | 1404406-001A | ND |
| 2014-05-06 | 1405199-001A | ND |
| 2014-06-03 | 1406180-001A | ND |
| 2014-07-08 | 1407377-001A | ND |
| 2014-08-12 | 1408619-001A | ND |
| 2014-09-16 | 1409817-001A | ND |
| 2014-10-01 | 1410012-003A | ND |
| 2014-10-07 | 1410299-001A | ND |
| 2014-11-04 | 1411116-001A | ND |
| 2014-11-18 | 1411A41-003A | ND |
| 2014-12-08 | 1412473-001A | ND |
| 2014-12-16 | 1412917-001A | ND |
| 2015-01-05 | 1501129-001A | ND |
| 2015-01-05 | 1501129-007A | ND |
| 2015-02-24 | 1502E77-001A | ND |
| 2015-02-24 | 1502E77-009A | ND |
| 2015-03-03 | 1503110-001A | ND |
| 2015-03-03 | 1503110-009A | ND |
| 2015-04-21 | 1504G11-001A | ND |
| 2015-04-28 | 1504L38-001A | ND |
| 2015-05-19 | 1505E43-001A | ND |
| 2015-05-19 | 1505E43-009A | ND |
| 2015-06-15 | 1506E33-001A | ND |
| 2015-06-16 | 1506E33-005A | ND |
| 2015-07-07 | 1507335-001A | ND |
| 2015-07-07 | 1507335-007A | ND |
| 2015-08-04 | 1508154-001A | ND |
| 2015-08-04 | 1508154-003A | ND |
| 2015-10-20 | 1510G11-001A | ND |
| 2015-10-20 | 1510G11-003A | ND |
| 2016-01-19 | 1601969-001A | ND |
| 2016-01-19 | 1601969-003A | ND |
| 2016-04-19 | 1604C89-001A | ND |
| 2016-04-19 | 1604C89-003A | ND |
| 2016-06-21 | 1606I19-005A | ND |
| 2016-06-21 | 1606I19-001A | ND |
| 2016-07-05 | 1607093-001A | ND |
| 2016-07-05 | 1607093-003A | ND |
| 2016-11-01 | 1611035-001A | ND |
| 2016-11-01 | 1611035-003A | ND |
| 2017-01-17 | 1701866-001A | ND |
| 2017-01-17 | 1701866-003A | ND |
| 2017-04-18 | 1704B51-003A | ND |
| 2017-04-18 | 1704B51-001A | ND |
| 2017-07-25 | 1707J12-001A | ND |
| 2017-07-25 | 1707J12-003A | ND |
| 2017-11-07 | 1711461-001A | ND |
| 2017-11-07 | 1711461-003A | ND |
| 2018-01-09 | 1801388-003A | ND |
| 2018-01-09 | 1801388-001A | ND |
| 2018-04-24 | 1804G60-003A | ND |
| 2018-04-24 | 1804G60-001A | ND |
| 2018-08-21 | 1808H61-001A | ND |
| 2018-08-21 | 1808H61-003A | ND |
| 2018-11-06 | 1811337-001A | ND |
| 2018-11-06 | 1811337-003A | ND |
| 2019-01-22 | 1901C94-001A | ND |
| 2019-01-22 | 1901C94-003A | ND |
| 2019-04-16 | 1904D38-001A | ND |
| 2019-04-16 | 1904D38-003A | ND |
| 2019-07-09 | 1907542-001A | ND |
| 2019-07-09 | 1907542-003A | ND |
| 2019-07-09 | 1907542-005A | ND |
| 2019-07-23 | 1907I42-003A | ND |
| 2019-07-23 | 1907I42-001A | ND |
| 2019-11-05 | 1911193-003A | ND |
| 2019-11-05 | 1911193-001A | ND |