cis-1,2-Dichloroethylene
Purcellville, Town of
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.
54
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 |
|---|---|---|---|---|
| 2018 | 1.30 ppb | 8 | 2 | ND - 7.50 ppb |
| 2019 | 2.66 ppb | 10 | 2 | ND - 25.0 ppb |
| 2020 | 1.13 ppb | 6 | 2 | ND - 5.10 ppb |
| 2021 | ND | 9 | 0 | ND |
| 2022 | 3.75 ppb | 10 | 3 | ND - 26.0 ppb |
| 2023 | 0.382 ppb | 11 | 2 | ND - 3.00 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2018-02-27 | E180100342 | ND |
| 2018-05-23 | E180303850 | ND |
| 2018-05-30 | E180303851 | 2.90 ppb |
| 2018-08-21 | E180601975 | ND |
| 2018-08-28 | E180601971 | ND |
| 2018-08-28 | E180601981 | 7.50 ppb |
| 2018-11-19 | E180901410 | ND |
| 2018-12-11 | E180901404 | ND |
| 2019-02-19 | E181104004 | 25.0 ppb |
| 2019-02-19 | E181104015 | ND |
| 2019-02-19 | E181104016 | ND |
| 2019-03-21 | E190302948 | ND |
| 2019-03-21 | E190302957 | ND |
| 2019-05-29 | E190304839 | ND |
| 2019-05-29 | E190304846 | ND |
| 2019-09-10 | E190900749 | 1.60 ppb |
| 2019-11-25 | E191000255 | ND |
| 2019-12-04 | E191000266 | ND |
| 2020-02-25 | E191203663 | ND |
| 2020-05-20 | E200302298 | ND |
| 2020-06-16 | E200600508 | 1.70 ppb |
| 2020-08-11 | E200601275 | 5.10 ppb |
| 2020-10-19 | E200906213 | ND |
| 2020-11-16 | E200906214 | ND |
| 2021-03-15 | E210100113 | ND |
| 2021-05-17 | E210400628 | ND |
| 2021-05-24 | E210400643 | ND |
| 2021-08-23 | E210701941 | ND |
| 2021-08-23 | E210701945 | ND |
| 2021-08-23 | E210705571 | ND |
| 2021-11-30 | E210901978 | ND |
| 2021-11-30 | E210901979 | ND |
| 2021-11-30 | E211100054 | ND |
| 2022-02-23 | E211206105 | ND |
| 2022-02-23 | E211201665 | 26.0 ppb |
| 2022-02-23 | E211201664 | ND |
| 2022-02-23 | E211201666 | ND |
| 2022-05-23 | E220303695 | ND |
| 2022-05-23 | E220303694 | 1.50 ppb |
| 2022-06-29 | E220607528 | ND |
| 2022-08-22 | E220607516 | 10.00 ppb |
| 2022-11-14 | E220904387 | ND |
| 2022-11-14 | E220904386 | ND |
| 2023-02-13 | E221203953 | ND |
| 2023-05-01 | E230305398 | ND |
| 2023-05-01 | E230305409 | ND |
| 2023-05-01 | E230305414 | ND |
| 2023-05-17 | E230305386 | ND |
| 2023-05-17 | E230305403 | ND |
| 2023-05-17 | E230305420 | ND |
| 2023-05-17 | E230305423 | ND |
| 2023-08-28 | E230603381 | 1.20 ppb |
| 2023-11-01 | E230904714 | ND |
| 2023-12-07 | E230903619 | 3.00 ppb |