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EWG's Tap Water Database — 2021 UPDATE

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Carbon tetrachloride

Crescenta Valley CWD

Carbon tetrachloride, a volatile carcinogenic solvent, has been used in industrial chemical production and as a dry cleaning ingredient. Read More.

Carbon tetrachloride is no longer permitted in products intended for home use in the U.S. In the past, it was widely used as a dry cleaning ingredient, fire extinguishing chemical, pesticide and chemical intermediate for manufacturing refrigerants. Carbon tetrachloride does not break down easily and can remain in groundwater for years. In addition to increasing cancer risk, carbon tetrachloride harms the liver and causes central nervous system depression, irregular heart rate, and kidney damage. Maternal exposure to carbon tetrachloride in drinking water has been associated with a risk of birth defects.

Click here to read more about carcinogenic VOCs.

MORE ABOUT THIS CONTAMINANT

 

398

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
2014ND110ND
2015ND110ND
2016ND160ND
2017ND990ND
2018ND1340ND
2019ND1270ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for carbon tetrachloride 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 carbon tetrachloride, 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 due to carbon tetrachloride exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2014-08-055806-001-1130ND
2014-08-055806-002-1056ND
2014-08-055806-005-1135ND
2014-08-055806-006-1320ND
2014-08-055806-007-1030ND
2014-08-055806-009-1030ND
2014-08-055806-010-1340ND
2014-08-055806-011-0950ND
2014-08-055806-012-1245ND
2014-08-055806-013-1156ND
2014-09-165806-008-0908ND
2015-05-055806-001-1120ND
2015-05-055806-002-1157ND
2015-05-055806-005-1215ND
2015-05-055806-006-1302ND
2015-05-055806-007-1128ND
2015-05-055806-008-1243ND
2015-05-055806-009-1028ND
2015-05-055806-010-1319ND
2015-05-055806-011-1101ND
2015-05-055806-012-1318ND
2015-05-055806-013-1255ND
2016-02-115806-027-0940ND
2016-05-035806-001-1048ND
2016-05-035806-002-1225ND
2016-05-035806-005-1210ND
2016-05-035806-006-1323ND
2016-05-035806-007-1110ND
2016-05-035806-008-1300ND
2016-05-035806-009-1101ND
2016-05-035806-010-1301ND
2016-05-035806-011-1150ND
2016-05-035806-013-1240ND
2016-05-035806-027-1215ND
2016-05-045806-027-1302ND
2016-06-075806-012-1110ND
2016-08-025806-027-0858ND
2016-11-085806-027-1120ND
2017-02-215806-001-1125ND
2017-02-215806-002-1125ND
2017-02-215806-005-1100ND
2017-02-215806-007-1030ND
2017-02-215806-009-1013ND
2017-02-215806-010-1250ND
2017-02-215806-011-1145ND
2017-02-215806-012-1245ND
2017-02-215806-013-0941ND
2017-02-215806-027-0914ND
2017-04-245806-006-1333ND
2017-05-025806-002-1053ND
2017-05-025806-005-1103ND
2017-05-025806-006-1220ND
2017-05-025806-007-1043ND
2017-05-025806-009-1033ND
2017-05-025806-010-1235ND
2017-05-025806-011-1013ND
2017-05-025806-012-1245ND
2017-05-025806-013-1247ND
2017-05-025806-014-1023ND
2017-05-025806-027-1241ND
2017-06-065806-002-1026ND
2017-06-065806-005-1033ND
2017-06-065806-007-1015ND
2017-06-065806-008-1133ND
2017-06-065806-009-1005ND
2017-06-065806-010-1102ND
2017-06-065806-011-0946ND
2017-06-065806-012-1054ND
2017-06-065806-013-1122ND
2017-06-065806-014-1316ND
2017-06-065806-027-1145ND
2017-07-055806-002-0938ND
2017-07-055806-005-0950ND
2017-07-055806-007-0928ND
2017-07-055806-008-1057ND
2017-07-055806-009-0911ND
2017-07-055806-010-1021ND
2017-07-055806-011-0901ND
2017-07-055806-012-1016ND
2017-07-055806-013-1036ND
2017-07-055806-014-1147ND
2017-07-055806-027-1108ND
2017-07-265806-008-0800ND
2017-08-015806-002-1009ND
2017-08-015806-005-0959ND
2017-08-015806-007-1017ND
2017-08-015806-008-1106ND
2017-08-015806-009-0929ND
2017-08-015806-010-1218ND
2017-08-015806-011-0906ND
2017-08-015806-012-1213ND
2017-08-015806-013-1049ND
2017-08-015806-014-1150ND
2017-08-015806-027-1117ND
2017-09-055806-002-1227ND
2017-09-055806-007-1247ND
2017-09-055806-008-1300ND
2017-09-055806-009-1112ND
2017-09-055806-010-1314ND
2017-09-055806-011-1219ND
2017-09-055806-012-1320ND
2017-09-055806-013-1144ND
2017-09-055806-014-1125ND
2017-09-055806-027-1136ND
2017-10-035806-002-1202ND
2017-10-035806-005-1157ND
2017-10-035806-007-1230ND
2017-10-035806-008-1330ND
2017-10-035806-009-1017ND
2017-10-035806-010-1340ND
2017-10-035806-011-1140ND
2017-10-035806-012-1341ND
2017-10-035806-013-1041ND
2017-10-035806-013-1312ND
2017-10-035806-027-1301ND
2017-11-075806-002-1002ND
2017-11-075806-005-1010ND
2017-11-075806-007-0949ND
2017-11-075806-008-1051ND
2017-11-075806-009-0928ND
2017-11-075806-010-1125ND
2017-11-075806-011-0916ND
2017-11-075806-012-1115ND
2017-11-075806-013-1041ND
2017-11-075806-014-1131ND
2017-11-075806-027-1102ND
2017-12-065806-002-0955ND
2017-12-065806-005-0947ND
2017-12-065806-007-1006ND
2017-12-065806-008-1052ND
2017-12-065806-009-0930ND
2017-12-065806-010-1231ND
2017-12-065806-011-0909ND
2017-12-065806-012-1225ND
2017-12-065806-013-1040ND
2017-12-065806-027-1122ND
2017-12-125806-014-0918ND
2018-01-035806-002-0948ND
2018-01-035806-005-0942ND
2018-01-035806-007-0956ND
2018-01-035806-008-1045ND
2018-01-035806-009-0932ND
2018-01-035806-010-1021ND
2018-01-035806-011-0910ND
2018-01-035806-012-1015ND
2018-01-035806-013-1032ND
2018-01-035806-014-0803ND
2018-01-035806-027-1056ND
2018-02-065806-002-1217ND
2018-02-065806-005-1231ND
2018-02-065806-007-1156ND
2018-02-065806-008-1054ND
2018-02-065806-009-1134ND
2018-02-065806-010-1245ND
2018-02-065806-010-1248ND
2018-02-065806-011-1120ND
2018-02-065806-012-1242ND
2018-02-065806-013-1108ND
2018-02-065806-014-0950ND
2018-02-065806-027-1045ND
2018-03-065806-002-1010ND
2018-03-065806-005-1020ND
2018-03-065806-007-0950ND
2018-03-065806-008-1145ND
2018-03-065806-009-0937ND
2018-03-065806-011-0920ND
2018-03-065806-012-1250ND
2018-03-065806-013-1240ND
2018-03-065806-014-0845ND
2018-03-065806-027-1125ND
2018-04-035806-002-1110ND
2018-04-035806-005-1130ND
2018-04-035806-007-1059ND
2018-04-035806-008-1200ND
2018-04-035806-009-1050ND
2018-04-035806-011-1303ND
2018-04-035806-012-1320ND
2018-04-035806-013-1220ND
2018-04-035806-014-0901ND
2018-04-035806-027-1231ND
2018-04-175806-010-1200ND
2018-05-015806-008-1130ND
2018-05-025806-002-0917ND
2018-05-025806-005-0930ND
2018-05-025806-007-0903ND
2018-05-025806-008-1130ND
2018-05-025806-009-0911ND
2018-05-025806-010-1145ND
2018-05-025806-011-0950ND
2018-05-025806-013-1111ND
2018-05-025806-014-1110ND
2018-05-025806-027-1012ND
2018-05-085806-012-1136ND
2018-06-055806-002-0949ND
2018-06-055806-005-0943ND
2018-06-055806-007-1000ND
2018-06-055806-008-1055ND
2018-06-055806-009-0931ND
2018-06-055806-010-1211ND
2018-06-055806-011-0905ND
2018-06-055806-012-1207ND
2018-06-055806-013-1043ND
2018-06-055806-014-0855ND
2018-06-055806-027-1034ND
2018-07-035806-002-0927ND
2018-07-035806-005-0938ND
2018-07-035806-007-0922ND
2018-07-035806-008-1038ND
2018-07-035806-009-0914ND
2018-07-035806-010-1104ND
2018-07-035806-010-1106ND
2018-07-035806-011-0907ND
2018-07-035806-012-1058ND
2018-07-035806-013-1032ND
2018-07-035806-014-0947ND
2018-07-035806-027-1045ND
2018-08-095806-002-1035ND
2018-08-095806-005-1132ND
2018-08-095806-007-1013ND
2018-08-095806-008-0928ND
2018-08-095806-009-1108ND
2018-08-095806-010-1224ND
2018-08-095806-011-1330ND
2018-08-095806-012-1240ND
2018-08-095806-013-0947ND
2018-08-095806-014-0859ND
2018-08-095806-027-1000ND
2018-09-045806-014-1300ND
2018-09-055806-002-0950ND
2018-09-055806-005-0938ND
2018-09-055806-007-1017ND
2018-09-055806-009-1032ND
2018-09-055806-010-1003ND
2018-09-055806-011-0916ND
2018-09-055806-012-0954ND
2018-09-055806-013-0905ND
2018-09-055806-027-0917ND
2018-09-255806-008-0854ND
2018-10-025806-002-1300ND
2018-10-025806-005-1320ND
2018-10-025806-007-1240ND
2018-10-025806-008-1013ND
2018-10-025806-009-1217ND
2018-10-025806-010-1329ND
2018-10-025806-011-1200ND
2018-10-025806-012-1325ND
2018-10-025806-013-1040ND
2018-10-025806-014-0900ND
2018-10-025806-027-1000ND
2018-11-065806-002-1007ND
2018-11-065806-005-0954ND
2018-11-065806-007-1016ND
2018-11-065806-008-1112ND
2018-11-065806-009-0924ND
2018-11-065806-010-0739ND
2018-11-065806-011-0939ND
2018-11-065806-012-0732ND
2018-11-065806-013-1057ND
2018-11-065806-014-1245ND
2018-11-065806-027-1125ND
2018-12-045806-002-0909ND
2018-12-045806-005-0901ND
2018-12-045806-007-0915ND
2018-12-045806-008-1032ND
2018-12-045806-009-0924ND
2018-12-045806-010-0802ND
2018-12-045806-011-0854ND
2018-12-045806-012-0756ND
2018-12-045806-013-1022ND
2018-12-045806-014-1156ND
2018-12-045806-027-1044ND
2019-01-025806-002-0913ND
2019-01-025806-007-1001ND
2019-01-025806-008-1041ND
2019-01-025806-009-0936ND
2019-01-025806-010-0832ND
2019-01-025806-011-0907ND
2019-01-025806-012-0838ND
2019-01-025806-013-1031ND
2019-01-025806-014-1228ND
2019-01-025806-027-1056ND
2019-01-085806-005-0946ND
2019-02-065806-002-1230ND
2019-02-065806-005-1321ND
2019-02-065806-007-1220ND
2019-02-065806-008-1012ND
2019-02-065806-009-1204ND
2019-02-065806-010-1310ND
2019-02-065806-011-1308ND
2019-02-065806-012-1311ND
2019-02-065806-013-1030ND
2019-02-065806-014-1146ND
2019-02-065806-027-1044ND
2019-02-125806-001-1021ND
2019-02-125806-002-0950ND
2019-02-125806-005-1015ND
2019-02-125806-007-1005ND
2019-02-125806-008-1150ND
2019-02-125806-009-0854ND
2019-02-125806-010-1215ND
2019-02-125806-011-0841ND
2019-02-125806-012-1225ND
2019-02-125806-013-1130ND
2019-02-125806-027-1205ND
2019-03-055806-002-1251ND
2019-03-055806-005-1305ND
2019-03-055806-007-1237ND
2019-03-055806-008-1050ND
2019-03-055806-009-1220ND
2019-03-055806-010-1312ND
2019-03-055806-011-1331ND
2019-03-055806-012-1301ND
2019-03-055806-013-1101ND
2019-03-055806-014-1154ND
2019-03-055806-027-1116ND
2019-04-025806-005-1053ND
2019-04-025806-007-1150ND
2019-04-025806-008-1250ND
2019-04-025806-009-1130ND
2019-04-025806-010-1250ND
2019-04-025806-011-1115ND
2019-04-025806-012-1245ND
2019-04-025806-013-1300ND
2019-04-025806-014-1040ND
2019-04-025806-027-1230ND
2019-05-075806-002-0922ND
2019-05-075806-005-0913ND
2019-05-075806-007-0927ND
2019-05-075806-008-1235ND
2019-05-075806-009-0938ND
2019-05-075806-010-0822ND
2019-05-075806-011-0906ND
2019-05-075806-012-0813ND
2019-05-075806-013-1214ND
2019-05-075806-014-1131ND
2019-05-075806-027-1204ND
2019-06-045806-002-0911ND
2019-06-045806-005-0903ND
2019-06-045806-008-1052ND
2019-06-045806-009-0921ND
2019-06-045806-010-0814ND
2019-06-045806-011-0856ND
2019-06-045806-012-0805ND
2019-06-045806-013-1043ND
2019-06-045806-014-1147ND
2019-06-045806-027-1033ND
2019-07-025806-002-0824ND
2019-07-025806-005-0816ND
2019-07-025806-008-1002ND
2019-07-025806-009-0833ND
2019-07-025806-010-0751ND
2019-07-025806-011-0809ND
2019-07-025806-012-0747ND
2019-07-025806-013-0952ND
2019-07-025806-014-0848ND
2019-07-025806-027-0943ND
2019-08-055806-002-0926ND
2019-08-055806-005-0916ND
2019-08-055806-008-1431ND
2019-08-055806-009-0945ND
2019-08-055806-010-1505ND
2019-08-055806-011-0907ND
2019-08-055806-012-1500ND
2019-08-055806-013-1438ND
2019-08-055806-014-0858ND
2019-08-055806-027-1420ND
2019-08-205806-007-1236ND
2019-09-035806-002-1335ND
2019-09-035806-005-1340ND
2019-09-035806-007-1307ND
2019-09-035806-008-1030ND
2019-09-035806-009-1141ND
2019-09-035806-010-1237ND
2019-09-035806-011-1129ND
2019-09-035806-012-1232ND
2019-09-035806-013-1041ND
2019-09-035806-014-0911ND
2019-09-035806-027-1000ND
2019-10-015806-002-1307ND
2019-10-015806-005-1121ND
2019-10-015806-007-1313ND
2019-10-015806-008-1333ND
2019-10-015806-009-1054ND
2019-10-015806-010-0842ND
2019-10-015806-011-1039ND
2019-10-015806-012-0846ND
2019-10-015806-013-1331ND
2019-10-015806-014-1021ND
2019-11-045806-002-0822ND
2019-11-045806-005-0833ND
2019-11-045806-007-0855ND
2019-11-045806-008-1044ND
2019-11-045806-009-0908ND
2019-11-045806-010-0752ND
2019-11-045806-011-0844ND
2019-11-045806-012-0745ND
2019-11-045806-013-1033ND
2019-11-045806-014-1021ND