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EWG's Tap Water Database — 2021 UPDATE

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Dichloromethane (methylene chloride)

City of Merced

Methylene chloride is a common industrial solvent used for paint stripping, vapor degreasing, printing, electronics manufacturing and cleaning. It causes cancer and liver damage in animal studies. Read More.

Surface and groundwater can be contaminated with methylene chloride from industrial releases and landfill leaching. The EPA considers methylene chloride likely carcinogenic to people. Long-term ingestion of drinking water with methylene chloride contamination can cause liver damage and cancer. Occupational exposure to methylene chloride and other solvents has been linked with increased risk of miscarriage. Birth defects have also been observed in studies of laboratory animals exposed to methylene chloride during pregnancy.

Click here to read more about carcinogenic VOCs.

MORE ABOUT THIS CONTAMINANT

 

542

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND1200ND
2015ND1270ND
2016ND920ND
2017ND1060ND
2018ND680ND
2019ND290ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 4 ppb

The EWG Health Guideline of 4 ppb for dichloromethane (methylene chloride) 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 dichloromethane, established in 1992, was based on analytical detection limits at the time that the standard was set.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-165810-001-0955ND
2014-01-165810-002-1000ND
2014-01-165810-003-0950ND
2014-01-165810-004-0853ND
2014-01-165810-005-0856ND
2014-01-165810-008-0914ND
2014-01-165810-011-0932ND
2014-01-165810-020-0835ND
2014-01-165810-022-1012ND
2014-01-165810-023-0905ND
2014-02-135810-001-1003ND
2014-02-135810-002-1007ND
2014-02-135810-003-1000ND
2014-02-135810-004-0835ND
2014-02-135810-005-0838ND
2014-02-135810-008-0910ND
2014-02-135810-011-0934ND
2014-02-135810-020-0855ND
2014-02-135810-022-1040ND
2014-02-135810-023-0830ND
2014-03-205810-001-1040ND
2014-03-205810-002-1030ND
2014-03-205810-003-1035ND
2014-03-205810-004-0915ND
2014-03-205810-005-0918ND
2014-03-205810-008-1002ND
2014-03-205810-011-1002ND
2014-03-205810-020-0900ND
2014-03-205810-022-1038ND
2014-03-205810-023-0910ND
2014-04-175810-001-0910ND
2014-04-175810-002-0915ND
2014-04-175810-003-0905ND
2014-04-175810-004-1025ND
2014-04-175810-005-1029ND
2014-04-175810-008-1100ND
2014-04-175810-011-0841ND
2014-04-175810-020-1000ND
2014-04-175810-022-0935ND
2014-04-175810-023-1036ND
2014-05-225810-001-0944ND
2014-05-225810-002-0948ND
2014-05-225810-003-0955ND
2014-05-225810-004-0850ND
2014-05-225810-005-0852ND
2014-05-225810-008-0917ND
2014-05-225810-011-0933ND
2014-05-225810-020-0837ND
2014-05-225810-022-1021ND
2014-05-225810-023-0856ND
2014-05-295810-001-1000ND
2014-05-295810-002-1003ND
2014-05-295810-003-1006ND
2014-05-295810-004-0902ND
2014-05-295810-005-0900ND
2014-05-295810-008-0928ND
2014-05-295810-011-0947ND
2014-05-295810-020-1120ND
2014-05-295810-022-1055ND
2014-05-295810-023-0855ND
2014-06-195810-001-0936ND
2014-06-195810-002-0944ND
2014-06-195810-003-0950ND
2014-06-195810-004-0847ND
2014-06-195810-005-0831ND
2014-06-195810-008-0903ND
2014-06-195810-011-0916ND
2014-06-195810-020-0847ND
2014-06-195810-022-1008ND
2014-06-195810-023-0834ND
2014-07-175810-001-0942ND
2014-07-175810-002-0944ND
2014-07-175810-003-0938ND
2014-07-175810-004-0853ND
2014-07-175810-005-0855ND
2014-07-175810-008-0924ND
2014-07-175810-020-0907ND
2014-07-175810-022-1014ND
2014-07-175810-023-0848ND
2014-07-255810-004-0910ND
2014-08-145810-001-0949ND
2014-08-145810-002-0953ND
2014-08-145810-003-0940ND
2014-08-145810-004-0820ND
2014-08-145810-005-0822ND
2014-08-145810-008-1005ND
2014-08-145810-020-0945ND
2014-08-145810-022-0909ND
2014-08-145810-023-0835ND
2014-09-185810-001-1335ND
2014-09-185810-002-1345ND
2014-09-185810-003-1340ND
2014-09-185810-004-1310ND
2014-09-185810-005-1315ND
2014-09-185810-022-1410ND
2014-09-185810-023-1320ND
2014-10-165810-001-0958ND
2014-10-165810-002-1004ND
2014-10-165810-003-1010ND
2014-10-165810-004-0847ND
2014-10-165810-005-0850ND
2014-10-165810-020-0909ND
2014-10-165810-022-0934ND
2014-10-165810-023-0858ND
2014-11-205810-001-1350ND
2014-11-205810-002-1353ND
2014-11-205810-003-1358ND
2014-11-205810-004-1310ND
2014-11-205810-005-1315ND
2014-11-205810-020-1254ND
2014-11-205810-022-0833ND
2014-11-205810-023-1318ND
2014-12-185810-001-0940ND
2014-12-185810-002-0952ND
2014-12-185810-003-1002ND
2014-12-185810-004-0840ND
2014-12-185810-005-0837ND
2014-12-185810-020-0859ND
2014-12-185810-022-0920ND
2014-12-185810-023-0847ND
2015-01-155810-001-0944ND
2015-01-155810-002-0947ND
2015-01-155810-003-0950ND
2015-01-155810-004-0926ND
2015-01-155810-005-0929ND
2015-01-155810-020-0910ND
2015-01-155810-022-1014ND
2015-01-295810-015-0828ND
2015-01-295810-016-0855ND
2015-01-295810-019-0918ND
2015-01-295810-041-1327ND
2015-01-295810-042-0823ND
2015-01-295810-043-0843ND
2015-01-295810-048-1325ND
2015-01-295810-049-0936ND
2015-01-295810-054-1008ND
2015-02-185810-008-1220ND
2015-02-195810-001-1135ND
2015-02-195810-002-1138ND
2015-02-195810-003-1141ND
2015-02-195810-004-1040ND
2015-02-195810-005-1042ND
2015-02-195810-020-1112ND
2015-02-195810-022-1015ND
2015-02-195810-023-1052ND
2015-03-125810-001-1110ND
2015-03-125810-002-1125ND
2015-03-125810-003-1115ND
2015-03-125810-004-1000ND
2015-03-125810-005-0955ND
2015-03-125810-020-0934ND
2015-03-125810-022-1033ND
2015-03-125810-023-1010ND
2015-04-165810-001-1026ND
2015-04-165810-002-1032ND
2015-04-165810-003-1035ND
2015-04-165810-004-0931ND
2015-04-165810-005-0935ND
2015-04-165810-008-1000ND
2015-04-165810-011-1012ND
2015-04-165810-020-0909ND
2015-04-165810-022-1050ND
2015-04-165810-023-0925ND
2015-05-265810-001-1350ND
2015-05-265810-002-1400ND
2015-05-265810-003-1405ND
2015-05-265810-004-1311ND
2015-05-265810-005-1305ND
2015-05-265810-008-1325ND
2015-05-265810-011-1335ND
2015-05-265810-020-1240ND
2015-05-265810-022-1425ND
2015-05-265810-023-1302ND
2015-06-185810-001-1007ND
2015-06-185810-002-1013ND
2015-06-185810-003-1011ND
2015-06-185810-004-0901ND
2015-06-185810-005-0903ND
2015-06-185810-008-0943ND
2015-06-185810-020-0922ND
2015-06-185810-022-1030ND
2015-06-185810-023-0854ND
2015-07-165810-001-1032ND
2015-07-165810-002-1029ND
2015-07-165810-003-1037ND
2015-07-165810-004-0929ND
2015-07-165810-005-0934ND
2015-07-165810-008-0951ND
2015-07-165810-011-1003ND
2015-07-165810-020-0913ND
2015-07-165810-022-1050ND
2015-07-165810-023-0937ND
2015-08-065810-021-1115ND
2015-08-135810-001-0935ND
2015-08-135810-002-0940ND
2015-08-135810-003-0945ND
2015-08-135810-004-0840ND
2015-08-135810-005-0847ND
2015-08-135810-008-1019ND
2015-08-135810-020-0821ND
2015-08-135810-022-0913ND
2015-08-135810-023-0852ND
2015-09-245810-001-1111ND
2015-09-245810-002-1115ND
2015-09-245810-003-1108ND
2015-09-245810-004-0957ND
2015-09-245810-005-1000ND
2015-09-245810-008-0930ND
2015-09-245810-011-0912ND
2015-09-245810-020-1027ND
2015-09-245810-022-1054ND
2015-09-245810-023-0952ND
2015-10-155810-001-1136ND
2015-10-155810-002-1140ND
2015-10-155810-003-1142ND
2015-10-155810-004-1054ND
2015-10-155810-005-1057ND
2015-10-155810-008-1110ND
2015-10-155810-011-1122ND
2015-10-155810-020-1035ND
2015-10-155810-022-1157ND
2015-10-155810-023-1049ND
2015-11-195810-001-1131ND
2015-11-195810-001-1132ND
2015-11-195810-002-1128ND
2015-11-195810-002-1129ND
2015-11-195810-003-1125ND
2015-11-195810-004-1031ND
2015-11-195810-005-1025ND
2015-11-195810-005-1028ND
2015-11-195810-008-1113ND
2015-11-195810-008-1312ND
2015-11-195810-011-1144ND
2015-11-195810-011-1150ND
2015-11-195810-020-1049ND
2015-11-195810-022-1105ND
2015-11-195810-023-1025ND
2015-12-175810-001-1030ND
2015-12-175810-002-1035ND
2015-12-175810-003-1040ND
2015-12-175810-004-0853ND
2015-12-175810-005-0857ND
2015-12-175810-008-0940ND
2015-12-175810-011-1010ND
2015-12-175810-020-0925ND
2015-12-175810-022-1055ND
2015-12-175810-023-0905ND
2016-01-075810-001-1055ND
2016-01-075810-002-1050ND
2016-01-075810-003-1105ND
2016-01-075810-004-0952ND
2016-01-075810-005-0956ND
2016-01-075810-011-1118ND
2016-01-075810-020-0931ND
2016-01-075810-022-1015ND
2016-01-075810-023-0948ND
2016-02-185810-001-1014ND
2016-02-185810-002-1010ND
2016-02-185810-003-1007ND
2016-02-185810-004-0922ND
2016-02-185810-005-0919ND
2016-02-185810-011-0955ND
2016-02-185810-020-0903ND
2016-02-185810-022-1030ND
2016-02-185810-023-0916ND
2016-03-175810-001-1015ND
2016-03-175810-002-1018ND
2016-03-175810-003-1025ND
2016-03-175810-004-1305ND
2016-03-175810-005-1310ND
2016-03-175810-011-1045ND
2016-03-175810-020-0927ND
2016-03-175810-022-0951ND
2016-03-175810-023-1315ND
2016-04-145810-001-1144ND
2016-04-145810-002-1150ND
2016-04-145810-003-1141ND
2016-04-145810-004-1040ND
2016-04-145810-005-1043ND
2016-04-145810-011-1205ND
2016-04-145810-020-1028ND
2016-04-145810-022-1123ND
2016-04-145810-023-1050ND
2016-05-101233-057-1600ND
2016-05-125810-001-0950ND
2016-05-125810-002-0955ND
2016-05-125810-003-0958ND
2016-05-125810-004-0837ND
2016-05-125810-005-0844ND
2016-05-125810-011-0912ND
2016-05-125810-020-0820ND
2016-05-125810-022-0934ND
2016-05-125810-023-0847ND
2016-06-165810-001-0913ND
2016-06-165810-002-0916ND
2016-06-165810-003-0920ND
2016-06-165810-004-0804ND
2016-06-165810-005-0808ND
2016-06-165810-011-0940ND
2016-06-165810-020-0750ND
2016-06-165810-022-0840ND
2016-06-165810-023-0812ND
2016-08-119590-001-0945ND
2016-08-119590-002-0950ND
2016-08-119590-003-0940ND
2016-08-119590-004-0900ND
2016-08-119590-005-0905ND
2016-08-119590-020-0830ND
2016-08-119590-022-0920ND
2016-08-119590-023-0855ND
2016-09-019590-001-1205ND
2016-09-019590-002-1400ND
2016-09-019590-003-1255ND
2016-09-019590-004-1240ND
2016-09-019590-005-1340ND
2016-09-019590-011-0901ND
2016-09-019590-015-0810ND
2016-09-019590-016-1030ND
2016-09-019590-019-1055ND
2016-09-019590-020-1120ND
2016-09-019590-021-1450ND
2016-09-019590-022-1335ND
2016-09-019590-023-1430ND
2016-09-019590-041-1020ND
2016-09-019590-043-1235ND
2016-09-019590-048-0910ND
2016-09-019590-049-0945ND
2016-09-019590-054-0846ND
2016-10-139590-001-1010ND
2016-10-139590-002-1014ND
2016-10-139590-003-1007ND
2016-10-139590-004-0923ND
2016-10-139590-005-0929ND
2016-10-139590-011-0955ND
2016-10-139590-020-0912ND
2016-10-139590-022-1028ND
2016-10-139590-023-0934ND
2016-12-019590-042-0854ND
2016-12-209590-002-0926ND
2017-01-199590-001-1124ND
2017-01-199590-002-1131ND
2017-01-199590-003-1128ND
2017-01-199590-004-1042ND
2017-01-199590-005-1047ND
2017-01-199590-011-1155ND
2017-01-199590-020-1028ND
2017-01-199590-022-1107ND
2017-01-199590-023-1050ND
2017-02-169590-001-1006ND
2017-02-169590-002-1009ND
2017-02-169590-003-1004ND
2017-02-169590-004-0907ND
2017-02-169590-005-0910ND
2017-02-169590-011-1040ND
2017-02-169590-020-0903ND
2017-02-169590-022-0942ND
2017-02-169590-023-0915ND
2017-03-099590-008-0840ND
2017-03-169590-001-1033ND
2017-03-169590-002-1036ND
2017-03-169590-003-1029ND
2017-03-169590-004-0913ND
2017-03-169590-005-0910ND
2017-03-169590-008-1147ND
2017-03-169590-011-1005ND
2017-03-169590-020-0830ND
2017-03-169590-022-1105ND
2017-03-169590-023-0916ND
2017-04-139590-001-0920ND
2017-04-139590-002-0938ND
2017-04-139590-003-0925ND
2017-04-139590-004-1025ND
2017-04-139590-005-1022ND
2017-04-139590-008-0855ND
2017-04-139590-011-0907ND
2017-04-139590-020-0837ND
2017-04-139590-022-0958ND
2017-04-139590-023-1030ND
2017-05-189590-001-0945ND
2017-05-189590-002-0941ND
2017-05-189590-003-0936ND
2017-05-189590-004-0833ND
2017-05-189590-005-0840ND
2017-05-189590-008-0912ND
2017-05-189590-011-0900ND
2017-05-189590-020-0813ND
2017-05-189590-022-1000ND
2017-05-189590-023-0844ND
2017-07-149590-001-0957ND
2017-07-149590-002-1002ND
2017-07-149590-003-0954ND
2017-07-149590-004-0850ND
2017-07-149590-005-0854ND
2017-07-149590-008-0920ND
2017-07-149590-011-0933ND
2017-07-149590-020-0834ND
2017-07-149590-022-1020ND
2017-07-149590-023-0858ND
2017-08-179590-001-0947ND
2017-08-179590-002-0950ND
2017-08-179590-003-0943ND
2017-08-179590-004-0834ND
2017-08-179590-005-0836ND
2017-08-179590-008-0910ND
2017-08-179590-011-0928ND
2017-08-179590-020-0810ND
2017-08-179590-022-1010ND
2017-08-179590-023-0839ND
2017-09-149590-001-1034ND
2017-09-149590-002-1044ND
2017-09-149590-003-1039ND
2017-09-149590-004-0914ND
2017-09-149590-005-0917ND
2017-09-149590-011-1105ND
2017-09-149590-020-0855ND
2017-09-149590-022-0934ND
2017-09-149590-023-0920ND
2017-10-179590-001-0949ND
2017-10-179590-002-0955ND
2017-10-179590-003-0952ND
2017-10-179590-004-0846ND
2017-10-179590-005-0849ND
2017-10-179590-011-0932ND
2017-10-179590-020-0832ND
2017-10-179590-022-1012ND
2017-10-179590-023-0851ND
2017-11-169590-001-0825ND
2017-11-169590-002-0822ND
2017-11-169590-003-0835ND
2017-11-169590-004-0925ND
2017-11-169590-005-0928ND
2017-11-169590-008-0905ND
2017-11-169590-011-0850ND
2017-11-169590-022-0755ND
2017-11-169590-023-0935ND
2017-11-179590-020-0658ND
2017-12-149590-001-0805ND
2017-12-149590-002-0810ND
2017-12-149590-003-0813ND
2017-12-149590-004-0909ND
2017-12-149590-005-0912ND
2017-12-149590-011-1000ND
2017-12-149590-020-0935ND
2017-12-149590-022-0842ND
2017-12-149590-023-0915ND
2018-01-189590-001-1104ND
2018-01-189590-002-1107ND
2018-01-189590-003-1100ND
2018-01-189590-004-1020ND
2018-01-189590-005-1023ND
2018-01-189590-011-1045ND
2018-01-189590-020-1007ND
2018-01-189590-022-1121ND
2018-01-189590-023-1028ND
2018-01-229590-011-1116ND
2018-02-159590-001-0756ND
2018-02-159590-002-0800ND
2018-02-159590-003-0752ND
2018-02-159590-004-0712ND
2018-02-159590-005-0709ND
2018-02-159590-011-0733ND
2018-02-159590-020-0658ND
2018-02-159590-022-0815ND
2018-02-159590-023-0717ND
2018-03-299590-020-1103ND
2018-04-195810-001-0825ND
2018-04-195810-002-0832ND
2018-04-195810-003-0837ND
2018-04-195810-004-0730ND
2018-04-195810-005-0737ND
2018-04-195810-011-0803ND
2018-04-195810-020-0709ND
2018-04-195810-022-0904ND
2018-04-195810-023-0744ND
2018-05-015810-001-1320ND
2018-05-015810-002-1305ND
2018-05-015810-005-1043ND
2018-05-025810-008-1003ND
2018-05-035810-011-1325ND
2018-05-105810-001-0900ND
2018-05-105810-002-0912ND
2018-05-105810-003-0918ND
2018-05-105810-004-0810ND
2018-05-105810-005-0815ND
2018-05-105810-008-0946ND
2018-05-105810-011-0928ND
2018-05-105810-020-0747ND
2018-05-105810-022-0840ND
2018-05-105810-023-0820ND
2018-05-245810-008-1325ND
2018-06-145810-001-0748ND
2018-06-145810-002-0736ND
2018-06-145810-003-0740ND
2018-06-145810-004-0855ND
2018-06-145810-005-0847ND
2018-06-145810-008-0827ND
2018-06-145810-011-0805ND
2018-06-145810-022-0718ND
2018-06-145810-023-0858ND
2018-06-285810-020-0835ND
2018-07-265810-001-0820ND
2018-07-265810-002-0825ND
2018-07-265810-003-0830ND
2018-07-265810-004-0740ND
2018-07-265810-005-0735ND
2018-07-265810-008-0700ND
2018-07-265810-011-0850ND
2018-07-265810-020-0715ND
2018-07-265810-022-0800ND
2018-07-265810-023-0745ND
2018-11-135810-005-1353ND
2018-11-145810-008-1015ND
2018-11-155810-011-1121ND
2019-08-065810-016-0820ND
2019-08-065810-042-0845ND
2019-08-065810-043-1000ND
2019-08-065810-048-0755ND
2019-08-065810-049-1030ND
2019-08-065810-054-1100ND
2019-08-085810-019-0820ND
2019-08-085810-020-0915ND
2019-08-085810-021-0725ND
2019-08-085810-041-0855ND
2019-08-135810-003-0747ND
2019-08-135810-004-0830ND
2019-08-135810-005-0850ND
2019-08-135810-015-0955ND
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2019-08-135810-023-0855ND
2019-09-195810-001-1230ND
2019-10-035810-011-1220ND
2019-11-205810-011-0848ND
2019-11-265810-011-0811ND
2019-12-055810-011-0900ND
2019-12-125810-011-0910ND
2019-12-195810-001-0928ND
2019-12-195810-003-0920ND
2019-12-195810-008-1110ND
2019-12-195810-011-1030ND
2019-12-195810-020-1005ND
2019-12-195810-022-0945ND
2019-12-265810-011-0930ND