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EWG's Tap Water Database — 2019 UPDATE

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cis-1,2-Dichloroethylene

Rockford

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.

 

111

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.07 ppb225ND - 11.0 ppb
20131.57 ppb135ND - 8.10 ppb
20140.671 ppb226ND - 8.40 ppb
20151.86 ppb186ND - 9.70 ppb
20162.93 ppb114ND - 13.0 ppb
20171.72 ppb2510ND - 10.00 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
2012-01-242012864-01ND
2012-01-242012864-03ND
2012-01-252012864-053.00 ppb
2012-03-222032569-01ND
2012-04-252043207-01ND
2012-04-252043207-02ND
2012-04-252043207-033.20 ppb
2012-04-252043207-04ND
2012-04-252043207-05ND
2012-05-152052166-01ND
2012-05-152052166-04ND
2012-05-152052166-06ND
2012-05-152052166-07ND
2012-05-162052225-01ND
2012-06-212062941-03ND
2012-07-172072464-05ND
2012-07-172072464-01ND
2012-07-172072464-02ND
2012-07-202073363-014.40 ppb
2012-10-152102556-011.90 ppb
2012-10-162102571-0111.0 ppb
2012-10-162102571-03ND
2013-03-123031609-01ND
2013-04-163042651-05ND
2013-04-163042651-01ND
2013-04-163042651-02ND
2013-04-163042651-031.50 ppb
2013-04-163042651-04ND
2013-06-253063688-017.70 ppb
2013-10-223103297-05ND
2013-10-223103297-028.10 ppb
2013-10-223103297-01ND
2013-10-223103297-041.40 ppb
2013-10-303104055-011.70 ppb
2013-11-133111834-01ND
2014-01-214012700-05ND
2014-01-214012700-06ND
2014-01-224012700-02ND
2014-01-274013503-02ND
2014-01-314020631-01ND
2014-01-314020631-02ND
2014-01-314020631-03ND
2014-02-184022291-01ND
2014-02-184022294-01ND
2014-02-254023202-01ND
2014-04-034040726-010.520 ppb
2014-04-034040814-012.30 ppb
2014-04-164042720-010.560 ppb
2014-04-164042720-048.40 ppb
2014-04-164042720-05ND
2014-04-164042720-022.40 ppb
2014-04-164042720-03ND
2014-07-304074475-010.590 ppb
2014-10-174103510-03ND
2014-10-174103510-02ND
2014-10-284104356-01ND
2014-12-054121752-01ND
2015-02-065021724-019.70 ppb
2015-02-185022511-030.800 ppb
2015-04-085041268-017.30 ppb
2015-04-155042507-02ND
2015-04-225043417-01ND
2015-05-125051947-01ND
2015-05-125051947-02ND
2015-05-125051947-04ND
2015-05-205053045-02ND
2015-06-035060645-01ND
2015-06-175062896-01ND
2015-06-235063877-018.80 ppb
2015-07-295074562-01ND
2015-10-275104115-02ND
2015-10-275104115-031.10 ppb
2015-11-045110645-055.70 ppb
2015-11-045110645-06ND
2015-11-185112827-01ND
2016-03-026030509-01ND
2016-04-136042243-01ND
2016-04-266044110-02ND
2016-05-066051786-015.90 ppb
2016-06-086061435-01ND
2016-08-106082098-0113.0 ppb
2016-08-176083403-01ND
2016-10-126102040-01ND
2016-10-316110515-0112.0 ppb
2016-11-096111726-03ND
2016-11-096111726-041.30 ppb
2017-01-067011622-01ND
2017-01-067011622-02ND
2017-01-137012600-02ND
2017-01-137012603-011.60 ppb
2017-01-137012603-03ND
2017-01-207013468-03ND
2017-01-207013468-04ND
2017-01-207013468-01ND
2017-01-207013468-02ND
2017-01-277020195-010.580 ppb
2017-02-037021369-02ND
2017-02-107022427-01ND
2017-03-157032200-015.50 ppb
2017-05-267060081-036.00 ppb
2017-05-267060081-01ND
2017-06-097062750-059.20 ppb
2017-06-277064968-010.660 ppb
2017-06-287065205-01ND
2017-09-227094621-01ND
2017-10-207104443-02ND
2017-10-207104443-01ND
2017-10-277110218-0110.00 ppb
2017-11-097112882-010.560 ppb
2017-12-067121184-018.10 ppb
2017-12-067121184-040.700 ppb