1,1-Dichloroethylene
Yadkinville, Town of
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
28
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 | 2.70 ppb | 3 | 2 | ND - 4.10 ppb |
| 2015 | 3.84 ppb | 5 | 4 | ND - 5.70 ppb |
| 2016 | 2.32 ppb | 5 | 4 | ND - 4.20 ppb |
| 2017 | 3.02 ppb | 5 | 4 | ND - 6.00 ppb |
| 2018 | 4.16 ppb | 5 | 4 | ND - 5.50 ppb |
| 2019 | 3.70 ppb | 5 | 4 | ND - 5.20 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 7 ppb
The legal limit for 1,1-dichloroethylene, established in 1987, was based on a toxicity study conducted in laboratory animals in the 1980s.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-04-17 | C405035-02 | ND |
| 2014-08-21 | 92214421001VOC | 4.00 ppb |
| 2014-11-20 | 92226601001VOC | 4.10 ppb |
| 2015-02-12 | 4.70 ppb | |
| 2015-04-09 | ND | |
| 2015-05-21 | 5.70 ppb | |
| 2015-08-27 | 3.10 ppb | |
| 2015-12-03 | 5.70 ppb | |
| 2016-03-03 | 92288632001VOC | 3.00 ppb |
| 2016-05-12 | 92297456001VOC | 4.20 ppb |
| 2016-08-24 | 92310229001VOC | 2.40 ppb |
| 2016-10-06 | 92315212003VOC | ND |
| 2016-11-10 | 92319293003VOC | 2.00 ppb |
| 2017-02-16 | 92330326001VOC | 2.30 ppb |
| 2017-04-06 | 92336292005VOC | ND |
| 2017-05-11 | 92340219001VOC | 3.40 ppb |
| 2017-08-17 | 92351977002VOC | 3.40 ppb |
| 2017-11-16 | 92363793001VOC | 6.00 ppb |
| 2018-02-08 | 92372538001VOC | 4.80 ppb |
| 2018-04-05 | 92379790004VOC | ND |
| 2018-05-31 | 92386687001VOC | 5.40 ppb |
| 2018-08-23 | 92396902001VOC | 5.10 ppb |
| 2018-11-08 | 92406563001VOC | 5.50 ppb |
| 2019-02-14 | 92417751001_1271 | 5.20 ppb |
| 2019-05-30 | 92431146001_1271 | 4.30 ppb |
| 2019-08-22 | 92442598001_1271 | 4.30 ppb |
| 2019-10-10 | 92449202001_1271 | ND |
| 2019-11-14 | 92453830001_1271 | 4.70 ppb |