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EWG's Tap Water Database — 2019 UPDATE

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Tetrachloroethylene (perchloroethylene)

Golden State Water Company (GSWC) - South Arcadia

Dry cleaning chemical tetrachloroethylene, or perc, can cause cancer. It pollutes soil and groundwater due to emissions from dry cleaning facilities, and automotive, metalworking and other industries. Read More.

The EPA considers tetrachloroethylene a likely human carcinogen. It has been linked with increased incidence of lung, breast and colon cancers. Tetrachloroethylene also damages the liver, kidneys and central nervous system. The California public health goal of 0.06 parts per billion, set to protect against cancer, is 80 times lower than the amount allowed by the federal government, which is a Maximum Contaminant Level of 5 parts per billion.

Click here to read more about carcinogenic VOCs.

 

367

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.0279 ppb753ND - 0.880 ppb
20130.0467 ppb604ND - 0.820 ppb
20140.0203 ppb591ND - 1.20 ppb
2015ND610ND
2016ND600ND
2017ND520ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for tetrachloroethylene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL) 5 ppb

The legal limit for tetrachloroethylene, established in 1991, was based on analytical detection limits at the time that the standard was set. This limit does not fully protect against the risk of cancer due to tetrachloroethylene exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2012-01-032706-016-1130ND
2012-01-102706-016-1015ND
2012-01-172706-016-1118ND
2012-01-252706-016-1115ND
2012-01-312706-016-1118ND
2012-02-099588-005-1105ND
2012-02-099588-015-09400.500 ppb
2012-02-142706-016-1210ND
2012-02-212706-016-1118ND
2012-02-282706-016-1400ND
2012-03-132706-016-1124ND
2012-03-202706-016-1118ND
2012-03-202706-031-1137ND
2012-03-272706-016-1133ND
2012-03-272706-031-1141ND
2012-04-032706-016-0909ND
2012-04-032706-031-0907ND
2012-04-102706-016-1055ND
2012-04-102706-031-1110ND
2012-04-172706-016-1159ND
2012-04-172706-031-1201ND
2012-04-242706-016-1017ND
2012-04-242706-031-1021ND
2012-05-012706-016-1127ND
2012-05-012706-031-1131ND
2012-05-082706-016-1142ND
2012-05-082706-031-1156ND
2012-05-159588-015-09550.710 ppb
2012-05-152706-016-1140ND
2012-05-152706-031-1145ND
2012-05-222706-016-0924ND
2012-05-222706-031-0929ND
2012-05-292706-016-1114ND
2012-05-292706-031-1118ND
2012-06-052706-016-1116ND
2012-06-052706-031-1118ND
2012-06-122706-016-1132ND
2012-06-122706-031-1140ND
2012-06-182706-016-0933ND
2012-06-182706-031-0930ND
2012-06-262706-016-1117ND
2012-06-262706-031-1125ND
2012-07-022706-016-1135ND
2012-07-022706-031-1140ND
2012-07-062706-016-1043ND
2012-07-102706-016-1103ND
2012-07-112706-016-1300ND
2012-07-112706-018-1251ND
2012-07-162706-016-1101ND
2012-07-162706-031-1121ND
2012-07-242706-016-0936ND
2012-08-072706-016-1215ND
2012-08-142706-016-1132ND
2012-08-169588-006-0915ND
2012-08-169588-014-0850ND
2012-08-169588-015-0935ND
2012-08-212706-016-1154ND
2012-08-282706-016-1120ND
2012-09-042706-016-1231ND
2012-09-112706-016-1129ND
2012-09-182706-016-1121ND
2012-09-252706-016-1057ND
2012-10-022706-016-1020ND
2012-10-092706-016-1135ND
2012-10-162706-016-1137ND
2012-10-232706-016-1020ND
2012-10-302706-016-0958ND
2012-11-062706-016-1036ND
2012-11-132706-016-1137ND
2012-11-169588-015-09500.880 ppb
2012-11-192706-016-1136ND
2012-11-272706-016-1044ND
2012-12-042706-016-1246ND
2012-12-102706-016-1115ND
2012-12-182706-016-1210ND
2013-01-022706-016-1018ND
2013-01-082706-016-1218ND
2013-01-152706-016-1036ND
2013-01-222706-016-1015ND
2013-01-292706-016-1045ND
2013-02-052706-016-1127ND
2013-02-122706-016-1437ND
2013-02-192706-016-1017ND
2013-02-219588-005-1005ND
2013-02-219588-015-10500.620 ppb
2013-02-262706-016-1015ND
2013-03-052706-016-1220ND
2013-03-122706-016-1125ND
2013-03-192706-016-1034ND
2013-03-262706-016-1020ND
2013-04-022706-016-1037ND
2013-04-092706-016-1145ND
2013-04-162706-016-1037ND
2013-04-232706-016-1105ND
2013-04-302706-016-1008ND
2013-05-072706-016-1150ND
2013-05-132706-016-1213ND
2013-05-159588-015-10000.700 ppb
2013-05-212706-016-1030ND
2013-05-282706-016-1055ND
2013-06-042706-016-1011ND
2013-06-112706-016-1051ND
2013-06-182706-016-1124ND
2013-06-262706-016-0950ND
2013-07-022706-016-1402ND
2013-07-092706-016-1244ND
2013-07-172706-016-1005ND
2013-07-222706-016-1055ND
2013-07-292706-016-1048ND
2013-08-052706-016-1050ND
2013-08-122706-016-1040ND
2013-08-149588-006-1200ND
2013-08-149588-014-1225ND
2013-08-192706-016-0944ND
2013-08-262706-016-1112ND
2013-08-289588-015-11350.820 ppb
2013-09-032706-016-1153ND
2013-09-102706-016-1020ND
2013-09-162706-016-1025ND
2013-09-232706-016-1046ND
2013-10-012706-016-0943ND
2013-10-082706-016-1135ND
2013-10-142706-016-0915ND
2013-10-212706-016-1120ND
2013-10-282706-016-1033ND
2013-11-042706-016-1115ND
2013-11-122706-016-1218ND
2013-11-149588-015-10400.660 ppb
2013-11-182706-016-1243ND
2013-11-252706-016-1109ND
2013-12-022706-016-1028ND
2013-12-092706-016-1113ND
2013-12-162706-016-1046ND
2013-12-232706-016-0906ND
2013-12-302706-016-1031ND
2014-01-062706-016-0917ND
2014-01-132706-016-1113ND
2014-01-212706-016-0945ND
2014-01-272706-016-1023ND
2014-02-032706-016-1329ND
2014-02-102706-016-1053ND
2014-02-182706-016-1030ND
2014-02-242706-016-1154ND
2014-02-269588-005-1110ND
2014-02-269588-015-10351.20 ppb
2014-03-032706-016-1246ND
2014-03-102706-016-1041ND
2014-03-172706-016-0933ND
2014-03-242706-016-1052ND
2014-03-312706-016-1213ND
2014-04-072706-016-1245ND
2014-04-142706-016-1150ND
2014-04-212706-016-1216ND
2014-04-282706-016-1215ND
2014-05-052706-016-1043ND
2014-05-122706-016-1253ND
2014-05-159588-006-1015ND
2014-05-159588-015-1050ND
2014-05-192706-016-1120ND
2014-05-282706-016-1320ND
2014-06-022706-016-1035ND
2014-06-092706-016-1114ND
2014-06-162706-016-1040ND
2014-06-232706-016-1152ND
2014-07-012706-016-1142ND
2014-07-072706-016-1134ND
2014-07-142706-016-1049ND
2014-07-212706-016-1224ND
2014-07-282706-016-1133ND
2014-08-042706-016-1135ND
2014-08-112706-016-1144ND
2014-08-182706-016-1133ND
2014-08-252706-016-1050ND
2014-08-289588-006-1100ND
2014-08-289588-014-1025ND
2014-09-022706-016-1049ND
2014-09-082706-016-1059ND
2014-09-152706-016-0955ND
2014-09-222706-016-1045ND
2014-09-292706-016-1209ND
2014-10-072706-016-1155ND
2014-10-132706-016-1100ND
2014-10-202706-016-1040ND
2014-10-272706-016-1040ND
2014-11-032706-016-1055ND
2014-11-059588-015-0955ND
2014-11-102706-016-1151ND
2014-11-172706-016-1003ND
2014-11-242706-016-1111ND
2014-12-012706-016-1144ND
2014-12-082706-016-1029ND
2014-12-152706-016-1025ND
2014-12-222706-016-1056ND
2014-12-292706-016-1033ND
2015-01-052706-016-1110ND
2015-01-122706-016-1020ND
2015-01-202706-016-1105ND
2015-01-262706-016-0952ND
2015-02-022706-016-1051ND
2015-02-092706-016-1129ND
2015-02-172706-016-1024ND
2015-02-199588-005-1005ND
2015-02-199588-015-0955ND
2015-02-242706-016-0948ND
2015-03-022706-016-1000ND
2015-03-092706-016-1053ND
2015-03-162706-016-1015ND
2015-03-232706-016-1029ND
2015-04-012706-016-0905ND
2015-04-072706-016-1114ND
2015-04-132706-016-1031ND
2015-04-212706-016-1011ND
2015-04-272706-016-1206ND
2015-05-042706-016-1013ND
2015-05-112706-016-1059ND
2015-05-122706-018-1033ND
2015-05-182706-016-1215ND
2015-05-199588-015-1020ND
2015-05-272706-016-1049ND
2015-06-012706-016-1057ND
2015-06-082706-016-1033ND
2015-06-152706-016-1037ND
2015-06-182706-016-1008ND
2015-06-182706-018-0957ND
2015-06-222706-016-1050ND
2015-07-012706-016-0827ND
2015-07-062706-016-0837ND
2015-07-142706-016-1030ND
2015-07-202706-016-1106ND
2015-07-272706-016-1155ND
2015-08-032706-016-1104ND
2015-08-102706-016-1008ND
2015-08-149588-006-1045ND
2015-08-149588-014-1115ND
2015-08-149588-015-1035ND
2015-08-172706-016-1055ND
2015-09-012706-016-1003ND
2015-09-082706-016-1016ND
2015-09-142706-016-0918ND
2015-09-212706-016-1102ND
2015-09-282706-016-1125ND
2015-10-052706-016-1029ND
2015-10-122706-016-1017ND
2015-10-192706-016-1011ND
2015-10-262706-016-0921ND
2015-11-022706-016-1022ND
2015-11-092706-016-0931ND
2015-11-162706-016-1040ND
2015-11-179588-015-1015ND
2015-11-232706-016-1018ND
2015-12-012706-016-1044ND
2015-12-072706-016-1021ND
2015-12-142706-016-1023ND
2015-12-212706-016-1030ND
2015-12-282706-016-0946ND
2016-01-042706-016-1123ND
2016-01-112706-016-1150ND
2016-01-192706-016-1055ND
2016-01-252706-016-1108ND
2016-02-012706-016-1055ND
2016-02-082706-016-1115ND
2016-02-162706-016-1001ND
2016-02-179588-015-1125ND
2016-02-222706-016-0941ND
2016-03-012706-016-0945ND
2016-03-082706-016-1106ND
2016-03-152706-016-1354ND
2016-03-212706-016-1247ND
2016-03-229588-005-1110ND
2016-03-282706-016-1026ND
2016-04-042706-016-1120ND
2016-04-142706-016-1040ND
2016-04-182706-016-1004ND
2016-04-252706-005-0923ND
2016-04-252706-016-1018ND
2016-05-022706-016-1200ND
2016-05-102706-016-1007ND
2016-05-119588-015-1055ND
2016-05-172706-016-1135ND
2016-05-242706-016-1045ND
2016-05-312706-016-1053ND
2016-06-072706-016-1040ND
2016-06-142706-016-1042ND
2016-06-202706-016-1125ND
2016-06-272706-016-1321ND
2016-07-052706-016-1139ND
2016-07-112706-016-1410ND
2016-07-182706-016-1355ND
2016-07-262706-016-0915ND
2016-08-012706-016-1131ND
2016-08-080007-016-1140ND
2016-08-162706-016-1205ND
2016-08-199588-006-0920ND
2016-08-199588-014-0850ND
2016-08-199588-015-1010ND
2016-08-222706-016-1112ND
2016-08-292706-016-1126ND
2016-09-062706-016-1119ND
2016-09-122706-016-1137ND
2016-09-192706-016-1307ND
2016-09-262706-016-1259ND
2016-10-032706-016-0931ND
2016-10-102706-016-1124ND
2016-10-172706-016-1234ND
2016-10-252706-016-1046ND
2016-11-012706-016-0924ND
2016-11-072706-016-0935ND
2016-11-142706-016-1117ND
2016-11-179588-015-1100ND
2016-11-212706-016-0933ND
2016-11-282706-016-0900ND
2016-12-052706-016-1137ND
2016-12-122706-016-1308ND
2016-12-222706-016-0849ND
2016-12-272706-016-1143ND
2017-01-099590-016-1115ND
2017-01-179590-016-1314ND
2017-01-249590-016-1038ND
2017-01-309590-016-1031ND
2017-02-079590-016-1015ND
2017-02-149590-016-1026ND
2017-02-169588-005-1120ND
2017-02-169588-015-1055ND
2017-03-069590-016-1008ND
2017-03-139590-016-1036ND
2017-03-209590-016-0913ND
2017-03-279590-016-0940ND
2017-04-039590-016-1015ND
2017-04-109590-016-1255ND
2017-04-179590-016-0945ND
2017-04-249590-016-0928ND
2017-05-019590-016-0950ND
2017-05-089590-016-0945ND
2017-05-159590-016-0929ND
2017-05-169588-015-1105ND
2017-05-229590-016-1010ND
2017-05-309590-016-0927ND
2017-07-039590-016-0845ND
2017-07-109590-016-1240ND
2017-07-179590-016-0922ND
2017-07-249590-016-0846ND
2017-08-019590-016-0923ND
2017-08-079590-016-1426ND
2017-08-109588-006-1035ND
2017-08-109588-014-1055ND
2017-08-109588-015-1020ND
2017-08-149590-016-1143ND
2017-08-219590-016-1110ND
2017-08-289590-016-1052ND
2017-09-059590-016-1300ND
2017-09-119590-016-1319ND
2017-09-189590-016-0925ND
2017-09-259590-016-1102ND
2017-10-029590-016-0922ND
2017-10-099590-016-1308ND
2017-10-169590-016-1055ND
2017-10-239590-016-0918ND
2017-10-309590-016-0913ND
2017-11-069590-016-1110ND
2017-11-139590-016-1152ND
2017-11-209590-016-0936ND
2017-11-279590-016-0915ND
2017-11-299588-015-1015ND
2017-12-049590-016-0954ND
2017-12-129590-016-1135ND
2017-12-189590-016-0923ND
2017-12-289590-016-1115ND