1,1-Dichloroethylene
Richardson County Rural Water District 2
NOTE: Richardson County Rural Water District 2 purchases water from Falls City, City of which is required to test for 1,1-dichloroethylene. Sample information shown below was taken by Falls City, City of.
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 8 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
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
NOTE: Richardson County Rural Water District 2 purchases water from Falls City, City of which is required to test for 1,1-dichloroethylene. Sample information shown below was taken by Falls City, City of.
| Date | Lab ID | Result |
|---|---|---|
| 2014-09-15 | 320896 | ND |
| 2014-09-22 | 324624 | ND |
| 2014-09-22 | 324625 | ND |
| 2015-08-10 | 375618 | ND |
| 2015-08-10 | 375619 | ND |
| 2016-08-08 | ND | |
| 2016-08-08 | ND | |
| 2017-04-24 | ND | |
| 2017-08-01 | ND | |
| 2017-08-01 | ND | |
| 2018-08-14 | 567277 | ND |
| 2018-08-14 | 567278 | ND |
| 2019-08-12 | 628466 | ND |
| 2019-08-12 | 628467 | ND |