cis-1,2-Dichloroethylene
East Alton
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.
26
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 3.30 ppb | 4 | 4 | 2.50 ppb - 3.70 ppb |
| 2015 | 3.64 ppb | 5 | 5 | 2.50 ppb - 4.90 ppb |
| 2016 | 2.93 ppb | 4 | 4 | 2.50 ppb - 3.60 ppb |
| 2017 | 3.78 ppb | 4 | 4 | 3.10 ppb - 4.70 ppb |
| 2018 | 2.56 ppb | 5 | 4 | ND - 3.70 ppb |
| 2019 | 2.60 ppb | 4 | 4 | 1.30 ppb - 3.60 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 70 ppb
The legal limit for cis-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 | 4013392-01 | 3.60 ppb |
| 2014-04-29 | 4050058-01 | 2.50 ppb |
| 2014-07-08 | 4071420-01 | 3.70 ppb |
| 2014-10-01 | 4100515-01 | 3.40 ppb |
| 2015-01-06 | 5010598-01 | 4.90 ppb |
| 2015-04-28 | 5044341-01 | 3.90 ppb |
| 2015-07-13 | 5072386-01 | 2.50 ppb |
| 2015-08-17 | 5083224-01 | 2.90 ppb |
| 2015-10-26 | 5103981-01 | 4.00 ppb |
| 2016-01-13 | 6012101-01 | 2.60 ppb |
| 2016-04-05 | 6040948-01 | 3.00 ppb |
| 2016-07-12 | 6072308-01 | 3.60 ppb |
| 2016-10-04 | 6100602-01 | 2.50 ppb |
| 2017-01-09 | 7011602-01 | 3.80 ppb |
| 2017-04-11 | 7041696-01 | 4.70 ppb |
| 2017-07-11 | 7072612-01 | 3.10 ppb |
| 2017-10-04 | 7100919-01 | 3.50 ppb |
| 2018-01-16 | 8013018-01 | 3.70 ppb |
| 2018-04-03 | 8041291-01 | 2.90 ppb |
| 2018-08-21 | 18H1017-01_02 | ND |
| 2018-08-28 | 8085787-01 | 3.40 ppb |
| 2018-10-22 | 8105047-01 | 2.80 ppb |
| 2019-01-22 | 9014063-01 | 2.90 ppb |
| 2019-04-29 | 9050017-01 | 3.60 ppb |
| 2019-07-24 | 9075426-01 | 2.60 ppb |
| 2019-10-22 | 9105187-01 | 1.30 ppb |