cis-1,2-Dichloroethylene
Swan Lake Resort
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.
21
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 | N/A | 0 | 0 | N/A |
| 2015 | 6.41 ppb | 5 | 4 | ND - 20.3 ppb |
| 2016 | 3.45 ppb | 4 | 4 | 0.200 ppb - 5.50 ppb |
| 2017 | 18.6 ppb | 2 | 2 | 5.10 ppb - 32.0 ppb |
| 2018 | 19.1 ppb | 5 | 3 | ND - 32.6 ppb |
| 2019 | 15.4 ppb | 5 | 4 | ND - 32.8 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 |
|---|---|---|
| 2015-01-29 | L5356678-1 | ND |
| 2015-01-29 | L5356678-2 | 20.3 ppb |
| 2015-05-20 | L5597776-1 | 3.74 ppb |
| 2015-08-26 | L5637548-1 | 4.35 ppb |
| 2015-10-13 | L5808059-1 | 3.67 ppb |
| 2016-03-03 | L5966662-1 | 0.200 ppb |
| 2016-04-21 | L6125529-1 | 4.20 ppb |
| 2016-08-11 | L6313321-1 | 3.90 ppb |
| 2016-11-10 | L6466225-1 | 5.50 ppb |
| 2017-02-20 | L6597147-1 | 5.10 ppb |
| 2017-10-25 | L6949166-1 | 32.0 ppb |
| 2018-02-12 | 2295566001 | 32.6 ppb |
| 2018-04-02 | 7048424001-VOC | ND |
| 2018-08-20 | 7062720001-VOC | ND |
| 2018-08-20 | 7062719001-VOC | 31.5 ppb |
| 2018-10-01 | 7067151001-VOC | 31.4 ppb |
| 2019-01-23 | 7077588001-VOC | ND |
| 2019-06-12 | 7093684001-VOC | 13.4 ppb |
| 2019-06-25 | 7095249001-VOC | 23.0 ppb |
| 2019-08-22 | 70102615001-VOC | 7.60 ppb |
| 2019-10-29 | 70110273001-VOC | 32.8 ppb |