1,1-Dichloroethylene
City of Taneytown
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
43
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 | 1.02 ppb | 5 | 4 | ND - 2.50 ppb |
| 2015 | 0.516 ppb | 5 | 1 | ND - 2.58 ppb |
| 2016 | 0.693 ppb | 6 | 2 | ND - 3.56 ppb |
| 2017 | 1.13 ppb | 2 | 1 | ND - 2.26 ppb |
| 2018 | 0.662 ppb | 13 | 4 | ND - 2.79 ppb |
| 2019 | 0.606 ppb | 12 | 3 | ND - 3.60 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 |
|---|---|---|
| 2014-01-13 | 0060012_02_COT01 | ND |
| 2014-02-12 | 0060012_03_99467 | 0.800 ppb |
| 2014-02-12 | 0060012_03_99467 | 0.700 ppb |
| 2014-07-11 | 0060012_02_00012 | 1.10 ppb |
| 2014-07-11 | 0060012_05_00012 | 2.50 ppb |
| 2015-02-18 | 0060012_03_20554 | ND |
| 2015-02-18 | 0060012_03_20554 | ND |
| 2015-09-23 | E16001274006 | ND |
| 2015-09-23 | E160012740011 | 2.58 ppb |
| 2015-09-23 | E160012740041 | ND |
| 2016-02-22 | 2125662 | ND |
| 2016-02-22 | 2125661001 | 0.600 ppb |
| 2016-08-31 | E17000888006 | ND |
| 2016-08-31 | E17000888001 | 3.56 ppb |
| 2016-08-31 | E17000888008 | ND |
| 2016-08-31 | E17000888004 | ND |
| 2017-09-28 | E18001312004 | ND |
| 2017-09-28 | E18001312001 | 2.26 ppb |
| 2018-03-05 | 2300211001 | 2.60 ppb |
| 2018-03-13 | E18003311004 | ND |
| 2018-06-20 | E18004567001 | ND |
| 2018-06-26 | 2322947001 | ND |
| 2018-07-10 | 2325449002 | ND |
| 2018-07-10 | 2325449001 | 2.20 ppb |
| 2018-08-16 | E19000551004 | ND |
| 2018-08-16 | E19000551008 | 1.02 ppb |
| 2018-08-16 | E19000551006 | 2.79 ppb |
| 2018-08-16 | E19000551001 | ND |
| 2018-08-20 | 2333891001 | ND |
| 2018-10-24 | E19001379001 | ND |
| 2018-11-06 | 2349403001 | ND |
| 2019-03-19 | 3022708001 | ND |
| 2019-06-03 | 3037434001 | ND |
| 2019-06-13 | E19004289004 | ND |
| 2019-07-15 | 3045712001 | ND |
| 2019-07-15 | 3045714001 | 3.60 ppb |
| 2019-07-25 | E20000354001 | ND |
| 2019-07-25 | E20000354004 | ND |
| 2019-07-25 | E20000354008 | 0.930 ppb |
| 2019-07-25 | E20000354006 | 2.74 ppb |
| 2019-07-25 | E20000354010 | ND |
| 2019-07-25 | E20000354012 | ND |
| 2019-11-05 | 3068008001 | ND |