cis-1,2-Dichloroethylene
Des Moines Water Works
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 5 | 0 | ND |
2015 | 0.200 ppb | 6 | 2 | ND - 0.700 ppb |
2016 | 0.367 ppb | 6 | 3 | ND - 0.900 ppb |
2017 | 0.140 ppb | 5 | 1 | ND - 0.700 ppb |
2018 | 0.458 ppb | 12 | 6 | ND - 1.40 ppb |
2019 | 0.300 ppb | 7 | 3 | ND - 0.800 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 |
---|---|---|
2014-01-21 | 2028503 | ND |
2014-04-07 | 2042946 | ND |
2014-07-09 | 2060882 | ND |
2014-10-08 | 2085404 | ND |
2014-10-08 | 2084996 | ND |
2015-01-14 | OE210022 | 0.500 ppb |
2015-04-02 | OE226853 | ND |
2015-07-09 | OE265310 | 0.700 ppb |
2015-07-13 | OE266315 | ND |
2015-08-10 | OE277679 | ND |
2015-10-06 | OE302468 | ND |
2016-01-14 | OE335747 | 0.900 ppb |
2016-04-04 | OE361635 | 0.500 ppb |
2016-07-07 | OE398069 | ND |
2016-09-30 | OE435256 | ND |
2016-09-30 | OE435255 | ND |
2016-10-19 | OE443121 | 0.800 ppb |
2017-01-13 | OE470379 | 0.700 ppb |
2017-04-11 | OE500201 | ND |
2017-07-10 | OE534403 | ND |
2017-10-19 | OE580193 | ND |
2017-12-15 | OE601645 | ND |
2018-02-07 | OE619537 | ND |
2018-04-09 | OE642876 | ND |
2018-07-09 | OE680202 | ND |
2018-07-11 | OE681739 | ND |
2018-07-16 | OE683859 | ND |
2018-10-08 | OE724008 | ND |
2018-10-09 | OE724603 | 0.500 ppb |
2018-11-01 | OE735012 | 1.40 ppb |
2018-11-01 | OE735015 | 0.900 ppb |
2018-11-01 | OE735014 | 0.900 ppb |
2018-11-01 | OE735009 | 0.700 ppb |
2018-11-01 | OE735004 | 1.10 ppb |
2019-02-05 | OE768013 | 0.700 ppb |
2019-05-07 | OE804374 | ND |
2019-07-09 | OE831885 | ND |
2019-07-16 | OE835743 | ND |
2019-08-06 | OE845757 | 0.800 ppb |
2019-08-21 | OE854920 | ND |
2019-11-11 | OE891921 | 0.600 ppb |