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EWG's Tap Water Database — 2021 UPDATE

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Trichloroethylene

California Water Service - Stockton

Trichloroethylene, an industrial solvent and common groundwater pollutant, damages the immune system, harms the developing fetus and causes cancer. Read More.

Trichloroethylene was once commonly used to remove grease from metal parts, such as steel pipes and engines, and as a solvent in dry cleaning and carpet cleaning products. Drinking trichloroethylene-contaminated drinking water has been linked with birth defects, leukemia, and liver and kidney damage. Trichloroethylene is highly volatile and can enter indoor air through water in pipes. If trichloroethylene is present, people can inhale it while bathing, washing dishes and doing other household activities that involve water.

Click here to read more about carcinogenic VOCs.

MORE ABOUT THIS CONTAMINANT

 

242

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND710ND
2015ND380ND
20160.0504 ppb281ND - 1.41 ppb
20170.188 ppb398ND - 1.30 ppb
2018ND350ND
2019ND310ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.4 ppb

The EWG Health Guideline of 0.4 ppb for trichloroethylene was defined by the state of Minnesota as health risk limit, the concentration of a contaminant that can be consumed with little or no risk to health. This health guideline protects against harm to the developing fetus and damage to the immune system.

EPA Maximum Contaminant
Level (MCL) 5 ppb

The legal limit for trichloroethylene, established in 1987, 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 and harm to the developing fetus.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-065701-069-0917ND
2014-01-065701-131-0905ND
2014-01-235701-007-1227ND
2014-01-235701-013-1145ND
2014-01-235701-028-1205ND
2014-01-235701-064-1045ND
2014-01-235701-065-1105ND
2014-01-235701-067-1125ND
2014-02-035701-069-0957ND
2014-02-035701-131-0945ND
2014-02-045701-125-1040ND
2014-02-125701-125-0937ND
2014-02-205701-062-1115ND
2014-03-045701-069-0715ND
2014-03-045701-131-0726ND
2014-03-115701-125-1210ND
2014-03-185701-130-1146ND
2014-03-185701-132-1310ND
2014-04-025701-069-0920ND
2014-04-025701-131-0940ND
2014-04-095701-125-1307ND
2014-04-155701-007-1013ND
2014-04-155701-013-1210ND
2014-04-155701-018-1232ND
2014-04-155701-028-1150ND
2014-04-155701-065-1624ND
2014-04-155701-067-1130ND
2014-04-299590-018-1015ND
2014-04-299590-018-1150ND
2014-04-305701-050-1319ND
2014-04-305701-052-1020ND
2014-05-065701-069-0930ND
2014-05-065701-131-0947ND
2014-05-135701-125-0925ND
2014-05-215701-053-1015ND
2014-05-215701-062-1125ND
2014-06-035701-069-1117ND
2014-06-035701-131-2112ND
2014-06-045701-125-1059ND
2014-06-235701-130-0954ND
2014-06-235701-132-1020ND
2014-07-035701-069-1035ND
2014-07-035701-131-1052ND
2014-07-075701-125-0921ND
2014-07-225701-007-1532ND
2014-07-225701-013-1512ND
2014-07-225701-028-1026ND
2014-07-225701-065-0914ND
2014-07-225701-067-1001ND
2014-07-305701-029-1140ND
2014-08-125810-069-1325ND
2014-08-125810-131-1340ND
2014-08-135810-125-0955ND
2014-08-275701-062-1228ND
2014-09-165701-069-0950ND
2014-09-165701-131-0937ND
2014-09-175701-125-1200ND
2014-09-305701-132-1144ND
2014-10-139590-125-1318ND
2014-10-275701-028-1330ND
2014-10-275701-065-1150ND
2014-10-275701-067-1208ND
2014-10-295701-007-1240ND
2014-10-295701-013-1145ND
2014-11-045701-069-0932ND
2014-11-045701-131-0944ND
2014-11-055701-125-1033ND
2014-11-185701-062-1332ND
2014-12-095701-125-1026ND
2014-12-175701-130-1120ND
2014-12-175701-132-1159ND
2015-01-155701-125-0959ND
2015-01-225701-054-1244ND
2015-01-285701-013-1154ND
2015-01-285701-065-1205ND
2015-01-285701-067-1140ND
2015-02-125701-125-0942ND
2015-02-245701-013-1126ND
2015-02-245701-045-1100ND
2015-02-245701-062-1142ND
2015-03-105701-125-1325ND
2015-04-085701-051-1223ND
2015-04-145701-125-1130ND
2015-04-155701-065-1035ND
2015-05-129590-125-1020ND
2015-05-215701-007-1650ND
2015-05-215701-028-1240ND
2015-05-215701-062-1325ND
2015-06-095701-125-1025ND
2015-06-165701-055-1406ND
2015-06-165701-058-1535ND
2015-06-165701-069-1030ND
2015-06-165701-131-1040ND
2015-06-165701-132-1348ND
2015-07-145701-125-1015ND
2015-07-225701-056-1112ND
2015-07-225701-065-1145ND
2015-08-161610-133-1900ND
2015-08-265701-125-1303ND
2015-08-305701-062-1138ND
2015-09-095701-125-1021ND
2015-10-155701-060-1235ND
2015-10-155701-125-1150ND
2015-10-275701-050-1026ND
2015-10-275701-065-0930ND
2015-11-045701-125-1103ND
2015-11-195810-059-1048ND
2015-12-075701-062-1103ND
2015-12-085701-125-1215ND
2016-01-135701-125-0949ND
2016-01-205701-065-1305ND
2016-02-035701-125-1200ND
2016-02-235701-013-1306ND
2016-02-235701-061-1135ND
2016-02-235701-062-1347ND
2016-03-095701-125-1004ND
2016-04-125701-125-1304ND
2016-04-135701-051-1140ND
2016-04-135701-065-1115ND
2016-05-105701-125-1042ND
2016-05-175701-007-1123ND
2016-05-175701-028-1107ND
2016-05-175701-062-1144ND
2016-06-145701-125-1235ND
2016-06-215701-069-1030ND
2016-06-215701-131-1050ND
2016-06-215701-132-1300ND
2016-07-055701-125-1434ND
2016-07-265701-018-12251.41 ppb
2016-08-095810-125-1030ND
2016-08-305701-062-1410ND
2016-09-135701-125-1226ND
2016-10-135701-125-1330ND
2016-11-085701-125-1122ND
2016-11-165701-062-1150ND
2016-12-065810-015-1014ND
2016-12-145701-125-1406ND
2017-01-125701-125-1055ND
2017-01-185701-064-1008ND
2017-02-145701-125-1030ND
2017-02-215701-062-1320ND
2017-03-085810-125-1050ND
2017-04-065701-125-1305ND
2017-04-175701-051-1110ND
2017-04-175701-052-11550.710 ppb
2017-04-185701-133-1122ND
2017-05-025701-052-13020.550 ppb
2017-05-035701-125-1045ND
2017-05-155701-007-1100ND
2017-05-155701-062-1255ND
2017-05-165701-028-1410ND
2017-05-165701-053-1540ND
2017-05-245701-018-1035ND
2017-06-145701-052-10000.920 ppb
2017-06-145701-130-1222ND
2017-06-145701-132-1116ND
2017-06-155701-069-1240ND
2017-06-155701-131-1250ND
2017-06-205701-125-1012ND
2017-07-115701-052-12300.670 ppb
2017-07-115701-125-1511ND
2017-07-255701-029-1014ND
2017-07-255701-133-1420ND
2017-08-025701-052-13101.20 ppb
2017-08-085701-125-1143ND
2017-08-175701-062-1135ND
2017-09-065701-052-14290.950 ppb
2017-09-075701-125-1344ND
2017-10-115701-052-10201.02 ppb
2017-10-125701-125-1200ND
2017-10-165701-133-1115ND
2017-11-065701-125-1521ND
2017-11-085810-052-09301.30 ppb
2017-11-285701-062-0955ND
2017-11-285701-067-1033ND
2017-12-055701-125-1100ND
2018-01-035701-125-1132ND
2018-01-245701-133-1520ND
2018-02-065701-125-1001ND
2018-02-205701-045-1000ND
2018-02-205701-062-1320ND
2018-04-119590-051-1340ND
2018-04-119590-133-1035ND
2018-05-085701-007-1040ND
2018-05-085701-054-1140ND
2018-05-085701-062-1115ND
2018-05-095701-125-1054ND
2018-06-145810-059-1510ND
2018-06-145810-060-1515ND
2018-06-145810-069-1340ND
2018-06-145810-131-1355ND
2018-06-265701-055-1205ND
2018-06-265701-058-1040ND
2018-06-265701-125-1121ND
2018-06-265701-132-1505ND
2018-07-105810-125-1230ND
2018-07-175701-056-1210ND
2018-07-175701-133-1350ND
2018-08-065701-125-1354ND
2018-08-065701-125-1357ND
2018-08-165701-062-1015ND
2018-09-065701-125-1321ND
2018-09-065701-125-1338ND
2018-10-025701-125-1406ND
2018-10-025701-125-1424ND
2018-10-165810-133-1155ND
2018-10-245810-050-1425ND
2018-11-075701-125-1039ND
2018-11-075701-125-1055ND
2018-11-265810-062-1305ND
2018-12-045810-125-1315ND
2019-01-085810-125-1030ND
2019-01-225810-061-1012ND
2019-01-225810-133-1200ND
2019-02-125701-051-1335ND
2019-02-125701-125-1020ND
2019-02-125701-125-1033ND
2019-02-265810-062-1150ND
2019-03-185701-125-1439ND
2019-03-185701-125-1450ND
2019-04-015701-125-1356ND
2019-04-155810-050-1335ND
2019-04-155810-133-1155ND
2019-04-175701-051-1305ND
2019-05-135701-125-1007ND
2019-05-215701-007-1120ND
2019-05-215701-028-1000ND
2019-05-215701-062-1100ND
2019-06-055701-125-1310ND
2019-06-175701-069-0945ND
2019-06-175701-131-1030ND
2019-06-195701-132-1020ND
2019-07-085701-125-1040ND
2019-07-165701-133-1335ND
2019-08-135701-125-1350ND
2019-08-145701-062-1238ND
2019-09-105701-125-1308ND
2019-10-085701-125-1418ND
2019-10-155701-133-1220ND
2019-11-065701-125-1330ND
2019-11-205701-062-1332ND
2019-12-115701-125-1355ND