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EWG's Tap Water Database — 2021 UPDATE

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1,1-Dichloroethylene

Mountain View Mobile Estates LLC

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

MORE ABOUT THIS CONTAMINANT

 

103

Samples

9

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.32 ppb168ND - 8.00 ppb
20152.52 ppb1711ND - 9.20 ppb
20162.29 ppb189ND - 9.20 ppb
20172.00 ppb166ND - 9.90 ppb
20181.61 ppb188ND - 7.50 ppb
20191.53 ppb186ND - 6.80 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
2014-01-072303-004-1035ND
2014-02-252303-002-11006.90 ppb
2014-02-252303-004-11000.970 ppb
2014-03-042303-004-1100ND
2014-04-082303-004-10451.10 ppb
2014-05-062303-002-11007.30 ppb
2014-05-062303-004-11003.10 ppb
2014-06-112303-004-10404.80 ppb
2014-07-242303-004-0930ND
2014-08-202303-002-11008.00 ppb
2014-08-202303-004-1100ND
2014-09-172303-004-1040ND
2014-10-152303-004-1050ND
2014-11-192303-002-11104.90 ppb
2014-11-192303-004-1110ND
2014-12-172303-004-1035ND
2015-01-202303-004-10400.550 ppb
2015-02-112303-002-10358.30 ppb
2015-02-112303-004-10350.700 ppb
2015-03-042303-004-10450.860 ppb
2015-04-072303-004-10452.00 ppb
2015-05-122303-002-10558.00 ppb
2015-05-122303-004-10551.60 ppb
2015-06-102303-004-10302.90 ppb
2015-07-142303-004-11003.00 ppb
2015-08-212303-006-0820ND
2015-08-252303-002-14055.70 ppb
2015-08-252303-004-1400ND
2015-09-092303-004-1045ND
2015-10-072303-004-1045ND
2015-11-102303-002-11109.20 ppb
2015-11-102303-004-1110ND
2015-12-152303-004-1030ND
2016-01-122303-004-1025ND
2016-02-102303-002-10555.60 ppb
2016-02-102303-004-1055ND
2016-03-162303-004-1020ND
2016-04-202303-004-09550.510 ppb
2016-05-042303-002-10259.20 ppb
2016-05-042303-004-1025ND
2016-06-132303-004-12303.30 ppb
2016-07-132303-004-10002.00 ppb
2016-08-032303-002-10106.10 ppb
2016-08-032303-004-10302.90 ppb
2016-08-302303-001-1100ND
2016-09-142303-004-09554.80 ppb
2016-09-232303-006-1045ND
2016-10-112303-004-1015ND
2016-11-082303-002-10356.80 ppb
2016-11-082303-004-1035ND
2016-12-062303-004-1030ND
2017-01-112303-004-0950ND
2017-02-152303-002-10004.30 ppb
2017-02-152303-004-1000ND
2017-03-082303-004-1015ND
2017-04-182303-004-1020ND
2017-05-102303-002-10107.00 ppb
2017-05-102303-004-1010ND
2017-06-052303-004-1530ND
2017-07-112303-004-0925ND
2017-08-092303-002-10459.10 ppb
2017-08-092303-004-1045ND
2017-09-132303-004-1030ND
2017-10-252303-004-10000.620 ppb
2017-11-072303-002-10309.90 ppb
2017-11-072303-004-1030ND
2017-12-192303-004-10151.10 ppb
2018-01-162303-004-10401.90 ppb
2018-02-082303-004-15301.90 ppb
2018-02-082303-006-1535ND
2018-02-212303-002-10457.50 ppb
2018-02-212303-004-10452.20 ppb
2018-03-142303-004-1055ND
2018-04-252303-004-1230ND
2018-05-152303-002-10506.30 ppb
2018-05-152303-004-1050ND
2018-06-042303-004-1200ND
2018-07-102303-004-1020ND
2018-08-152303-002-10303.90 ppb
2018-08-152303-004-1030ND
2018-09-122303-004-0815ND
2018-10-032303-004-0955ND
2018-11-071610-002-10204.60 ppb
2018-11-071610-004-1020ND
2018-12-121610-004-10100.740 ppb
2019-01-021610-004-12101.20 ppb
2019-01-021610-006-1210ND
2019-01-081610-004-13301.40 ppb
2019-02-131610-002-10205.40 ppb
2019-02-211610-004-1040ND
2019-03-061610-004-1015ND
2019-04-031610-004-1025ND
2019-05-081610-002-10456.30 ppb
2019-05-081610-004-1045ND
2019-06-121610-004-1010ND
2019-08-141610-001-0955ND
2019-08-141610-002-10056.80 ppb
2019-08-141610-004-1000ND
2019-09-111610-004-1007ND
2019-10-021610-004-0945ND
2019-11-131610-002-11006.50 ppb
2019-11-131610-004-1100ND
2019-12-111610-004-0954ND