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EWG's Tap Water Database — 2021 UPDATE

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Trichloroethylene

California Water Service Company - Dominguez

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

 

183

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND330ND
2015ND290ND
2016ND280ND
2017ND340ND
2018ND300ND
2019ND290ND

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
2014-01-085701-805-1118ND
2014-01-295701-023-1000ND
2014-02-125701-805-1146ND
2014-02-195701-018-1043ND
2014-03-125701-805-1120ND
2014-03-195701-004-1400ND
2014-03-195701-019-1415ND
2014-04-095701-805-1126ND
2014-05-145701-805-1117ND
2014-05-229590-018-1002ND
2014-05-305701-058-1600ND
2014-06-115701-805-1149ND
2014-06-255701-019-0945ND
2014-06-255701-024-1100ND
2014-07-095701-004-0930ND
2014-07-165701-805-1050ND
2014-07-235701-050-1345ND
2014-08-135810-805-1142ND
2014-08-275701-018-1345ND
2014-08-275701-036-1038ND
2014-09-175701-019-1441ND
2014-09-175701-024-1329ND
2014-09-245701-004-1150ND
2014-09-245701-016-1440ND
2014-10-085701-004-1115ND
2014-10-095701-016-1404ND
2014-10-159590-805-1054ND
2014-11-065701-022-1340ND
2014-11-195701-805-1120ND
2014-11-245701-018-1032ND
2014-12-179590-004-1450ND
2014-12-175701-019-0940ND
2014-12-175701-024-1030ND
2015-01-075701-805-1152ND
2015-01-215701-023-1340ND
2015-02-045701-805-1149ND
2015-02-185701-018-1345ND
2015-03-185701-024-1050ND
2015-03-185701-805-1200ND
2015-03-255701-004-1456ND
2015-03-255701-019-1530ND
2015-04-085701-805-1140ND
2015-06-105701-805-1141ND
2015-06-175701-004-1024ND
2015-06-175701-024-0930ND
2015-07-155701-019-1110ND
2015-07-155701-805-1304ND
2015-07-225701-050-1323ND
2015-08-125701-805-1320ND
2015-08-195701-036-1409ND
2015-09-095701-805-1035ND
2015-09-235701-004-1438ND
2015-09-235701-019-1015ND
2015-09-235701-024-1330ND
2015-10-055701-024-1020ND
2015-10-145701-805-1110ND
2015-11-045701-805-1130ND
2015-12-095701-805-1122ND
2015-12-175701-004-1108ND
2015-12-175701-024-0947ND
2015-12-239590-022-1040ND
2015-12-299590-016-1150ND
2016-01-135701-805-1112ND
2016-01-205701-023-1200ND
2016-02-035701-805-1132ND
2016-03-095701-805-1102ND
2016-03-169590-004-1040ND
2016-03-165701-024-1340ND
2016-03-239590-018-1340ND
2016-04-065701-805-1117ND
2016-05-115701-805-1230ND
2016-06-155701-018-1200ND
2016-06-155701-805-1124ND
2016-06-225701-004-1330ND
2016-06-225701-024-1130ND
2016-07-135701-805-1153ND
2016-07-205701-050-1310ND
2016-07-239590-057-1000ND
2016-07-279590-057-1105ND
2016-08-035701-805-1130ND
2016-09-145701-805-1124ND
2016-09-215701-004-1015ND
2016-09-215701-018-1100ND
2016-10-125701-805-1127ND
2016-11-165701-018-1300ND
2016-11-165701-805-1135ND
2016-12-145701-004-1305ND
2016-12-145810-805-1104ND
2016-12-219590-016-1255ND
2016-12-289590-019-0930ND
2017-01-115701-805-1133ND
2017-01-255701-023-1145ND
2017-02-155701-805-1221ND
2017-02-225701-018-1310ND
2017-03-089590-019-1430ND
2017-03-155701-004-1330ND
2017-03-155701-019-1445ND
2017-03-155701-805-1137ND
2017-04-055701-805-1050ND
2017-05-105701-805-1244ND
2017-05-235701-058-1200ND
2017-05-245701-018-1345ND
2017-06-075701-805-1159ND
2017-06-215701-004-0935ND
2017-06-215701-019-1040ND
2017-06-295701-024-1440ND
2017-07-129590-805-1001ND
2017-07-265701-050-1300ND
2017-08-165701-805-1132ND
2017-08-235701-004-1245ND
2017-08-235701-018-1020ND
2017-08-235701-036-1115ND
2017-09-135701-805-1003ND
2017-09-265701-019-1338ND
2017-09-265701-024-1428ND
2017-10-115701-016-1210ND
2017-10-115701-805-1040ND
2017-10-169590-805-1030ND
2017-11-085810-805-1058ND
2017-11-215701-018-1340ND
2017-12-135701-004-1105ND
2017-12-135701-019-0940ND
2017-12-135701-024-1035ND
2017-12-135701-805-1126ND
2018-01-115701-805-1215ND
2018-02-165701-805-0940ND
2018-02-215701-018-1145ND
2018-02-215701-023-1049ND
2018-03-145701-805-1100ND
2018-03-215701-004-1400ND
2018-03-215701-019-1000ND
2018-03-215701-024-1105ND
2018-05-095701-805-1110ND
2018-05-305701-018-1305ND
2018-06-205701-004-1400ND
2018-06-205701-019-1330ND
2018-07-115810-805-1146ND
2018-08-109590-018-1040ND
2018-08-109590-036-1300ND
2018-08-155701-805-1340ND
2018-09-195701-004-1306ND
2018-09-195701-019-0945ND
2018-09-195701-024-1100ND
2018-09-195701-805-1155ND
2018-10-105701-050-1110ND
2018-10-105701-805-1121ND
2018-11-145701-805-1100ND
2018-11-295810-018-1420ND
2018-12-045810-016-1208ND
2018-12-045810-022-1117ND
2018-12-209590-004-1345ND
2018-12-209590-019-1140ND
2018-12-209590-024-1300ND
2018-12-269590-805-0920ND
2019-01-165810-805-1116ND
2019-01-295701-023-1022ND
2019-02-205701-018-1130ND
2019-02-219590-065-1345ND
2019-03-185701-024-1113ND
2019-03-265701-019-1000ND
2019-05-295701-018-1115ND
2019-06-105701-004-1530ND
2019-06-255701-019-0930ND
2019-06-255701-024-1400ND
2019-07-315701-050-1250ND
2019-08-215701-050-1410ND
2019-08-285810-018-1130ND
2019-08-285810-036-1435ND
2019-09-065810-050-1050ND
2019-09-065701-050-1105ND
2019-09-069590-050-1120ND
2019-09-255701-004-1405ND
2019-09-255701-016-1300ND
2019-09-255701-019-1030ND
2019-09-255701-024-1500ND
2019-10-159590-026-1452ND
2019-10-159590-050-1440ND
2019-10-159590-052-1455ND
2019-11-205701-018-1206ND
2019-12-175701-004-1215ND
2019-12-175701-019-1045ND
2019-12-179590-022-1440ND
2019-12-175701-024-1240ND