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EWG's Tap Water Database — 2021 UPDATE

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1,1-Dichloroethylene

Golden State Water Company (GSWC) - Claremont

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

MORE ABOUT THIS CONTAMINANT

 

262

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.153 ppb474ND - 2.20 ppb
20150.233 ppb395ND - 2.90 ppb
20160.166 ppb435ND - 2.10 ppb
20170.0886 ppb497ND - 0.880 ppb
20180.0536 ppb424ND - 0.660 ppb
2019ND420ND

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
2014-01-142706-047-0952ND
2014-01-282706-047-1154ND
2014-02-112706-047-1308ND
2014-02-182706-006-1055ND
2014-02-182706-008-1335ND
2014-02-182706-011-10252.00 ppb
2014-02-182706-040-1250ND
2014-02-192706-065-1040ND
2014-02-252706-047-1237ND
2014-03-112706-047-0950ND
2014-05-132706-047-1252ND
2014-05-202706-008-1249ND
2014-05-202706-011-12031.50 ppb
2014-05-202706-040-1215ND
2014-05-202706-065-0933ND
2014-05-282706-047-0920ND
2014-06-102706-047-0931ND
2014-06-242706-047-1337ND
2014-07-082706-047-1413ND
2014-07-222706-047-1226ND
2014-08-132706-047-0913ND
2014-08-192706-002-0829ND
2014-08-192706-008-0854ND
2014-08-192706-017-1302ND
2014-08-192706-039-0815ND
2014-08-192706-040-0953ND
2014-08-192706-065-1240ND
2014-08-202706-011-09371.50 ppb
2014-08-202706-019-1007ND
2014-08-202706-020-0950ND
2014-08-202706-021-1037ND
2014-08-202706-022-1025ND
2014-08-202706-024-1055ND
2014-08-262706-047-0843ND
2014-09-092706-047-0917ND
2014-09-232706-047-0847ND
2014-09-292706-010-1215ND
2014-10-142706-047-1225ND
2014-10-282706-047-0945ND
2014-11-042706-030-1218ND
2014-11-102706-047-1345ND
2014-11-182706-008-1056ND
2014-11-182706-011-10062.20 ppb
2014-11-182706-040-1022ND
2014-11-182706-065-0920ND
2014-12-092706-047-1334ND
2014-12-222706-047-0932ND
2015-01-132706-047-1149ND
2015-01-272706-047-1030ND
2015-02-102706-047-1039ND
2015-02-172706-008-1050ND
2015-02-172706-011-09502.00 ppb
2015-02-172706-040-1010ND
2015-02-242706-047-0946ND
2015-03-102706-047-0920ND
2015-03-242706-047-1015ND
2015-04-142706-047-0929ND
2015-04-272706-047-1210ND
2015-05-122706-047-1132ND
2015-05-192706-008-1110ND
2015-05-192706-040-1006ND
2015-05-262706-047-1035ND
2015-06-092706-011-09161.70 ppb
2015-06-092706-047-0955ND
2015-06-122706-047-0940ND
2015-06-232706-047-0930ND
2015-07-282706-047-0847ND
2015-08-112706-047-0933ND
2015-08-172706-006-1049ND
2015-08-172706-011-09321.30 ppb
2015-08-172706-021-1114ND
2015-08-172706-030-1014ND
2015-08-262706-047-1056ND
2015-09-082706-047-0955ND
2015-09-222706-047-0936ND
2015-10-132706-047-1309ND
2015-10-272706-047-1055ND
2015-11-042706-019-1353ND
2015-11-102706-047-1357ND
2015-11-172706-008-1018ND
2015-11-172706-011-14032.90 ppb
2015-11-172706-040-0945ND
2015-11-252706-011-10151.20 ppb
2015-11-252706-047-0928ND
2015-12-082706-047-1447ND
2015-12-212706-047-1049ND
2016-01-122706-047-0948ND
2016-01-262706-047-0906ND
2016-02-084790-047-0928ND
2016-02-172706-008-0947ND
2016-02-172706-011-13152.10 ppb
2016-02-232706-040-1108ND
2016-02-232706-047-0912ND
2016-03-082706-047-1014ND
2016-03-232706-047-1041ND
2016-04-122706-047-0958ND
2016-04-262706-047-1215ND
2016-05-102706-047-1021ND
2016-05-172706-008-0907ND
2016-05-172706-011-10041.10 ppb
2016-05-172706-040-0921ND
2016-05-232706-047-1220ND
2016-06-072706-047-1252ND
2016-06-212706-047-0925ND
2016-07-062706-047-1144ND
2016-07-202706-047-1118ND
2016-08-022706-047-0920ND
2016-08-162706-047-0843ND
2016-08-232706-008-09400.640 ppb
2016-08-232706-010-0856ND
2016-08-232706-017-1043ND
2016-08-232706-019-1032ND
2016-08-232706-030-1020ND
2016-08-232706-039-0845ND
2016-08-232706-040-1000ND
2016-08-232706-065-1047ND
2016-09-012706-008-1500ND
2016-09-012706-008-1502ND
2016-09-062706-047-1027ND
2016-09-202706-047-1020ND
2016-09-212706-011-09152.00 ppb
2016-10-042706-047-1305ND
2016-10-202706-047-1024ND
2016-11-012706-047-1010ND
2016-11-152706-008-1037ND
2016-11-152706-011-10001.30 ppb
2016-11-152706-040-1017ND
2016-11-172706-006-1100ND
2016-11-212706-047-1003ND
2017-02-219590-011-10060.880 ppb
2017-02-219590-040-0842ND
2017-04-279590-011-13390.520 ppb
2017-05-039590-021-1420ND
2017-05-109590-002-1136ND
2017-05-109590-024-1412ND
2017-05-169590-040-08580.500 ppb
2017-05-189590-008-1145ND
2017-05-199590-011-10200.620 ppb
2017-07-229590-008-1128ND
2017-07-289590-008-0947ND
2017-07-289590-047-0959ND
2017-08-029590-008-1406ND
2017-08-029590-047-1413ND
2017-08-089590-008-1241ND
2017-08-089590-047-1228ND
2017-08-169590-008-1205ND
2017-08-169590-010-1244ND
2017-08-169590-017-0851ND
2017-08-169590-021-0913ND
2017-08-169590-040-1025ND
2017-08-169590-047-1213ND
2017-08-169590-065-0837ND
2017-08-239590-008-0929ND
2017-08-239590-047-0921ND
2017-08-299590-008-1052ND
2017-08-299590-047-1049ND
2017-08-309590-011-10350.650 ppb
2017-09-079590-047-1220ND
2017-09-139590-008-1051ND
2017-09-199590-006-1315ND
2017-09-199590-047-1010ND
2017-09-229590-039-1225ND
2017-09-299590-011-11460.570 ppb
2017-10-059590-047-1017ND
2017-10-259590-011-0900ND
2017-10-269590-008-1044ND
2017-11-019590-047-1407ND
2017-11-099590-047-1006ND
2017-11-149590-008-0846ND
2017-11-219590-040-1318ND
2017-11-219590-047-1334ND
2017-12-019590-022-1310ND
2017-12-019590-040-0840ND
2017-12-019590-040-0844ND
2017-12-059590-047-1157ND
2017-12-129590-008-1226ND
2017-12-199590-047-1053ND
2017-12-229590-011-10450.600 ppb
2018-01-109590-008-1243ND
2018-01-109590-047-1227ND
2018-02-069590-019-1137ND
2018-02-139590-008-0918ND
2018-02-139590-047-0820ND
2018-02-219590-040-11130.590 ppb
2018-03-139590-008-0843ND
2018-03-139590-047-0859ND
2018-03-219590-011-09450.660 ppb
2018-04-109590-008-1203ND
2018-04-109590-047-1229ND
2018-05-089590-008-0947ND
2018-05-089590-047-1010ND
2018-05-159590-002-1034ND
2018-05-159590-024-1130ND
2018-05-159590-040-1010ND
2018-06-129590-008-1111ND
2018-06-129590-047-1124ND
2018-07-109590-008-1315ND
2018-07-109590-047-1325ND
2018-08-149590-006-1050ND
2018-08-149590-008-1313ND
2018-08-149590-010-1117ND
2018-08-149590-017-1045ND
2018-08-149590-019-1010ND
2018-08-149590-022-1140ND
2018-08-149590-039-1141ND
2018-08-149590-040-1227ND
2018-08-149590-047-1323ND
2018-08-149590-065-1025ND
2018-08-169590-021-1115ND
2018-09-079590-040-10580.500 ppb
2018-09-079590-040-1105ND
2018-09-129590-008-1132ND
2018-09-259590-047-1143ND
2018-10-099590-008-1158ND
2018-10-099590-047-1140ND
2018-11-149590-008-1141ND
2018-11-149590-047-1157ND
2018-11-289590-040-11530.500 ppb
2018-12-119590-008-1154ND
2018-12-119590-047-1207ND
2019-01-089590-008-1053ND
2019-01-089590-047-1105ND
2019-02-129590-008-1212ND
2019-02-129590-040-1107ND
2019-02-129590-047-1223ND
2019-03-129590-047-0958ND
2019-03-269590-008-0855ND
2019-04-099590-008-1123ND
2019-04-099590-047-1139ND
2019-05-149590-008-1145ND
2019-05-149590-040-1105ND
2019-05-149590-047-1153ND
2019-05-219590-002-1140ND
2019-05-249590-047-1222ND
2019-06-119590-008-0906ND
2019-06-119590-047-0910ND
2019-07-089590-008-1240ND
2019-07-089590-047-1244ND
2019-08-129590-008-0956ND
2019-08-129590-040-1049ND
2019-08-129590-047-1015ND
2019-08-169590-006-0930ND
2019-08-289590-010-1132ND
2019-09-099590-008-1234ND
2019-09-099590-010-1041ND
2019-09-099590-017-0900ND
2019-09-099590-019-1146ND
2019-09-099590-021-0923ND
2019-09-099590-039-1104ND
2019-09-099590-047-1240ND
2019-09-179590-065-0850ND
2019-10-239590-024-1042ND
2019-10-299590-008-1118ND
2019-10-299590-047-1122ND
2019-11-139590-008-1302ND
2019-11-139590-040-1140ND
2019-11-139590-047-1307ND
2019-12-109590-008-1307ND
2019-12-109590-047-1311ND
2019-12-179590-047-1132ND
2019-12-269590-047-0917ND
2019-12-309590-022-1150ND