cis-1,2-Dichloroethylene
Crystal Lake
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.
65
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 | ND | 8 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | 0.300 ppb | 4 | 2 | ND - 0.690 ppb |
| 2017 | 0.0663 ppb | 8 | 1 | ND - 0.530 ppb |
| 2018 | 18.5 ppb | 22 | 19 | ND - 41.7 ppb |
| 2019 | 20.0 ppb | 19 | 19 | 0.700 ppb - 47.0 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 |
|---|---|---|
| 2014-02-12 | 14B0165-02 | ND |
| 2014-05-06 | 14E0153-07 | ND |
| 2014-08-12 | 14H0225-03 | ND |
| 2014-08-12 | 14H0266-06 | ND |
| 2014-08-12 | 14H0266-07 | ND |
| 2014-08-12 | 14H0266-02 | ND |
| 2014-08-12 | 14H0266-04 | ND |
| 2014-11-03 | 14K0027-01 | ND |
| 2015-02-18 | 15B0352-01VOC | ND |
| 2015-06-09 | 15F0252-03VOCS | ND |
| 2015-08-04 | 15H0095-04 | ND |
| 2015-10-20 | 15J0376-08 | ND |
| 2016-02-09 | 16B0195-07VOC | 0.690 ppb |
| 2016-04-19 | 16D0419-04 | 0.510 ppb |
| 2016-07-18 | 16G0434-01 | ND |
| 2016-10-11 | 16J0239-02 | ND |
| 2017-02-07 | 17B0148-03 | ND |
| 2017-04-11 | 17D0311-01 | ND |
| 2017-07-11 | 17G0205-03 | ND |
| 2017-07-11 | 17G0205-05 | ND |
| 2017-07-11 | 17G0205-04 | ND |
| 2017-07-11 | 17G0205-02 | ND |
| 2017-07-11 | 17G0205-01 | ND |
| 2017-10-10 | 17J0326-02 | 0.530 ppb |
| 2018-01-09 | 18A0154-08 | 11.7 ppb |
| 2018-01-09 | 18A0154-07 | 34.2 ppb |
| 2018-01-09 | 18A0154-06 | 36.8 ppb |
| 2018-01-09 | 18A0154-04_VOC | 0.700 ppb |
| 2018-04-10 | 8043251-03 | 41.0 ppb |
| 2018-04-10 | 8043251-04 | 33.0 ppb |
| 2018-04-10 | 8043251-02 | 11.0 ppb |
| 2018-04-10 | 8043251-01 | ND |
| 2018-06-20 | 18F0826-01_02 | ND |
| 2018-08-07 | 1808572-003A | 11.4 ppb |
| 2018-08-07 | 1808572-001A | 1.44 ppb |
| 2018-08-07 | 1808572-005A | 41.7 ppb |
| 2018-08-07 | 1808572-007A | 27.6 ppb |
| 2018-09-11 | 1809678-007A | 23.0 ppb |
| 2018-09-11 | 1809678-005A | 37.0 ppb |
| 2018-09-11 | 1809678-003A | 9.20 ppb |
| 2018-09-11 | 1809678-001A | 1.40 ppb |
| 2018-10-02 | 1810165-001A | 1.79 ppb |
| 2018-10-30 | 1810M75-001A | 10.00 ppb |
| 2018-10-30 | 1810M75-005A | 33.0 ppb |
| 2018-10-30 | 1810M75-003A | 40.2 ppb |
| 2018-11-19 | 18K0523-01_02 | ND |
| 2019-01-08 | 1901484-007A | 27.0 ppb |
| 2019-01-08 | 1901484-005A | 38.2 ppb |
| 2019-01-08 | 1901484-003A | 11.2 ppb |
| 2019-01-08 | 1901484-001A | 1.24 ppb |
| 2019-04-09 | 1904788-007A | 27.5 ppb |
| 2019-04-09 | 1904788-005A | 47.0 ppb |
| 2019-04-09 | 1904788-003A | 12.3 ppb |
| 2019-04-09 | 1904788-001A | 1.57 ppb |
| 2019-07-16 | 1907C22-007A | 29.7 ppb |
| 2019-07-16 | 1907C22-005A | 39.5 ppb |
| 2019-07-16 | 1907C22-003A | 11.7 ppb |
| 2019-07-16 | 1907C22-001A | 0.700 ppb |
| 2019-10-14 | 1910B62-005A | 22.0 ppb |
| 2019-10-14 | 1910B62-001A | 1.34 ppb |
| 2019-10-14 | 1910B62-007A | 15.3 ppb |
| 2019-10-14 | 1910B62-003A | 11.6 ppb |
| 2019-11-05 | 1910N75-005A | 29.8 ppb |
| 2019-11-05 | 1910N75-003A | 40.6 ppb |
| 2019-11-05 | 1910N75-001A | 12.3 ppb |