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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

Suburban Water Systems - San Jose Hills

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.

MORE ABOUT THIS CONTAMINANT

 

178

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND350ND
2015ND190ND
2016ND320ND
2017ND350ND
2018ND350ND
2019ND220ND

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
2014-01-139588-065-1036ND
2014-01-139588-075-1045ND
2014-02-119588-065-1041ND
2014-02-119588-075-1101ND
2014-02-219588-071-1322ND
2014-03-119588-071-1349ND
2014-03-129588-065-1323ND
2014-03-129588-075-1337ND
2014-04-159588-065-1125ND
2014-04-159588-071-1101ND
2014-04-159588-075-1350ND
2014-05-139588-065-1015ND
2014-05-139588-071-0937ND
2014-05-139588-075-1031ND
2014-06-099588-065-1006ND
2014-06-099588-071-0934ND
2014-06-099588-075-1026ND
2014-07-109588-065-1000ND
2014-07-109588-075-1015ND
2014-07-159588-071-1227ND
2014-08-119588-065-0928ND
2014-08-119588-071-0846ND
2014-08-119588-075-0944ND
2014-09-109588-071-1245ND
2014-09-179588-065-0957ND
2014-09-179588-075-1017ND
2014-10-159588-065-0953ND
2014-10-159588-075-1004ND
2014-10-179588-071-1030ND
2014-11-219588-065-1021ND
2014-11-219588-071-0950ND
2014-11-219588-075-1032ND
2014-12-159588-065-1012ND
2014-12-159588-071-0940ND
2014-12-159588-075-1030ND
2015-01-199588-071-1125ND
2015-02-209588-071-1038ND
2015-03-109588-071-1030ND
2015-04-159588-071-1338ND
2015-05-019588-075-1043ND
2015-05-119588-071-0925ND
2015-06-159588-071-1055ND
2015-06-209588-075-2216ND
2015-07-159588-065-1351ND
2015-07-159588-071-1338ND
2015-07-159588-075-1405ND
2015-08-129588-065-0942ND
2015-08-129588-071-0920ND
2015-08-129588-075-0953ND
2015-09-109588-065-1132ND
2015-09-109588-075-1153ND
2015-09-119588-071-0925ND
2015-10-129588-071-1010ND
2015-11-029588-071-1046ND
2016-01-129588-071-0942ND
2016-02-089588-075-1045ND
2016-02-179588-065-1216ND
2016-02-179588-071-1145ND
2016-03-019588-065-1100ND
2016-03-019588-071-1038ND
2016-03-019588-075-1120ND
2016-04-069588-065-1341ND
2016-04-069588-071-1320ND
2016-04-069588-075-1403ND
2016-05-029588-065-1058ND
2016-05-029588-071-1001ND
2016-05-029588-075-1108ND
2016-06-279588-065-1040ND
2016-06-279588-071-0950ND
2016-06-279588-075-1057ND
2016-07-199588-065-0940ND
2016-07-199588-075-1218ND
2016-08-169588-065-1430ND
2016-08-169588-071-1520ND
2016-08-169588-075-1545ND
2016-09-199588-065-1140ND
2016-09-199588-075-1240ND
2016-10-109588-071-1628ND
2016-10-119588-065-0854ND
2016-10-119588-075-0908ND
2016-11-049588-065-1150ND
2016-11-049588-071-1135ND
2016-11-049588-075-1248ND
2016-12-139588-065-1135ND
2016-12-139588-071-1055ND
2016-12-149588-075-0710ND
2017-01-039588-065-1044ND
2017-01-039588-075-1105ND
2017-02-089588-070-0840ND
2017-02-209588-065-1125ND
2017-02-209588-075-1136ND
2017-03-079588-071-0943ND
2017-03-079588-075-1020ND
2017-03-089588-065-0945ND
2017-04-119588-065-1013ND
2017-04-119588-071-1002ND
2017-04-119588-075-1032ND
2017-05-039588-065-1125ND
2017-05-039588-071-1102ND
2017-05-039588-075-1150ND
2017-06-099588-065-0851ND
2017-06-099588-071-0842ND
2017-06-099588-075-0911ND
2017-07-119588-065-1112ND
2017-07-119588-071-1033ND
2017-07-119588-075-1135ND
2017-08-119588-065-0932ND
2017-08-119588-071-0903ND
2017-08-119588-075-0943ND
2017-09-119588-065-1150ND
2017-09-119588-071-1034ND
2017-09-119588-075-1205ND
2017-10-179588-065-0956ND
2017-10-179588-071-0852ND
2017-10-179588-075-1030ND
2017-11-179588-065-0845ND
2017-11-179588-071-0822ND
2017-11-179588-075-0910ND
2017-12-159588-065-1334ND
2017-12-159588-071-1325ND
2017-12-159588-075-1342ND
2018-01-179588-065-0901ND
2018-01-179588-071-0841ND
2018-01-179588-075-0912ND
2018-02-069588-065-1030ND
2018-02-069588-071-1018ND
2018-02-069588-075-1042ND
2018-03-079588-065-0858ND
2018-03-079588-075-0910ND
2018-03-129588-071-0915ND
2018-04-119588-065-0933ND
2018-04-119588-075-0955ND
2018-05-039588-065-1110ND
2018-05-039588-071-1035ND
2018-05-039588-075-1121ND
2018-06-019588-071-1020ND
2018-06-049588-065-0848ND
2018-06-049588-075-0900ND
2018-07-069588-065-0912ND
2018-07-069588-071-0906ND
2018-07-069588-075-0938ND
2018-08-069588-065-0856ND
2018-08-069588-075-0914ND
2018-08-079588-071-0913ND
2018-09-219588-065-0842ND
2018-09-219588-075-0903ND
2018-09-269588-071-1018ND
2018-10-029588-065-0908ND
2018-10-029588-075-0958ND
2018-10-039588-071-0855ND
2018-11-069588-065-0935ND
2018-11-069588-071-0858ND
2018-11-069588-075-1238ND
2018-12-049588-071-0843ND
2018-12-049588-075-0908ND
2018-12-129588-065-1345ND
2019-01-219588-065-0911ND
2019-01-219588-075-0921ND
2019-02-089588-065-0805ND
2019-02-089588-075-0920ND
2019-03-049588-065-1330ND
2019-03-119588-075-1215ND
2019-03-259588-075-1434ND
2019-04-089588-065-1028ND
2019-04-089588-075-1045ND
2019-05-079588-065-0853ND
2019-05-079588-075-0905ND
2019-06-109588-065-1013ND
2019-06-109588-075-1035ND
2019-07-109588-065-1011ND
2019-07-109588-075-1025ND
2019-08-089588-065-1249ND
2019-09-129588-065-0941ND
2019-10-099588-065-1215ND
2019-10-099588-071-1200ND
2019-11-209588-065-1045ND
2019-12-129588-065-1010ND
2019-12-129588-071-1031ND