Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

1,1-Dichloroethylene

Monrovia Water Department

1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.

MORE ABOUT THIS CONTAMINANT

 

120

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.235 ppb207ND - 0.890 ppb
20150.0275 ppb201ND - 0.550 ppb
20160.1000 ppb183ND - 0.670 ppb
20170.0275 ppb201ND - 0.550 ppb
20180.0509 ppb222ND - 0.600 ppb
2019ND200ND

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
2014-01-319588-002-09450.660 ppb
2014-01-319588-003-0925ND
2014-01-319588-004-0910ND
2014-01-319588-005-0900ND
2014-01-319588-008-09350.510 ppb
2014-04-099588-002-09300.770 ppb
2014-04-099588-003-0940ND
2014-04-099588-004-0910ND
2014-04-099588-005-0920ND
2014-04-099588-008-00000.890 ppb
2014-07-079588-002-09100.840 ppb
2014-07-079588-003-0900ND
2014-07-079588-004-0940ND
2014-07-079588-005-0930ND
2014-07-079588-008-09250.510 ppb
2014-10-069588-002-09200.510 ppb
2014-10-069588-003-0905ND
2014-10-069588-004-0930ND
2014-10-069588-005-0930ND
2014-10-069588-008-0855ND
2015-01-209588-002-0935ND
2015-01-209588-003-0905ND
2015-01-209588-004-0955ND
2015-01-209588-005-0945ND
2015-01-209588-008-0855ND
2015-04-019588-002-1015ND
2015-04-019588-003-0955ND
2015-04-019588-004-1010ND
2015-04-019588-005-1005ND
2015-04-019588-008-09450.550 ppb
2015-07-159588-002-0955ND
2015-07-159588-003-0930ND
2015-07-159588-004-0920ND
2015-07-159588-005-0910ND
2015-07-159588-008-0945ND
2015-10-149588-002-0925ND
2015-10-149588-003-0915ND
2015-10-149588-004-0945ND
2015-10-149588-005-0935ND
2015-10-149588-008-0900ND
2016-01-129588-002-0955ND
2016-01-129588-003-0910ND
2016-01-129588-004-0940ND
2016-01-129588-005-0925ND
2016-01-129588-008-0900ND
2016-04-129588-002-0935ND
2016-04-129588-003-0925ND
2016-04-129588-005-0950ND
2016-04-129588-008-09150.530 ppb
2016-07-139588-002-0920ND
2016-07-139588-003-0910ND
2016-07-139588-005-0930ND
2016-07-139588-008-09050.670 ppb
2016-10-189588-002-0915ND
2016-10-189588-003-0900ND
2016-10-189588-005-0905ND
2016-10-189588-008-08500.600 ppb
2016-12-199588-004-0905ND
2017-01-109588-002-1055ND
2017-01-109588-003-1050ND
2017-01-109588-004-1110ND
2017-01-109588-005-1105ND
2017-01-109588-008-10450.550 ppb
2017-04-119588-002-0910ND
2017-04-119588-003-0900ND
2017-04-119588-004-0920ND
2017-04-119588-005-0915ND
2017-04-119588-008-0855ND
2017-08-079588-002-0950ND
2017-08-079588-003-0905ND
2017-08-079588-004-0945ND
2017-08-079588-005-0940ND
2017-08-079588-008-1000ND
2017-10-179588-002-0955ND
2017-10-179588-003-0930ND
2017-10-179588-004-0920ND
2017-10-179588-005-0915ND
2017-10-179588-008-0905ND
2018-01-109588-002-0910ND
2018-01-109588-003-0905ND
2018-01-109588-004-0855ND
2018-01-109588-005-0845ND
2018-03-089588-008-0905ND
2018-04-109588-002-0850ND
2018-04-109588-008-0920ND
2018-04-119588-002-0925ND
2018-04-119588-003-0935ND
2018-04-119588-004-0915ND
2018-04-119588-005-0905ND
2018-04-119588-008-08550.520 ppb
2018-07-129588-002-0950ND
2018-07-129588-003-0915ND
2018-07-129588-004-0935ND
2018-07-129588-005-0925ND
2018-07-129588-008-0905ND
2018-10-039588-002-0925ND
2018-10-039588-003-0910ND
2018-10-039588-004-0945ND
2018-10-039588-005-0935ND
2018-10-039588-008-09050.600 ppb
2019-01-039588-002-0915ND
2019-01-039588-003-0920ND
2019-01-039588-004-0905ND
2019-01-039588-005-0855ND
2019-01-039588-008-0845ND
2019-04-039588-002-1200ND
2019-04-039588-003-1155ND
2019-04-039588-004-1135ND
2019-04-039588-005-1130ND
2019-04-039588-008-1120ND
2019-07-169588-002-1055ND
2019-07-169588-003-1105ND
2019-07-169588-004-1045ND
2019-07-169588-005-1035ND
2019-07-169588-008-1115ND
2019-10-219588-002-0810ND
2019-10-219588-003-0805ND
2019-10-219588-004-0825ND
2019-10-219588-005-0815ND
2019-10-219588-008-0800ND