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EWG's Tap Water Database — 2019 UPDATE

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Dichloromethane (methylene chloride)

Montebello Land & Water Company

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.

 

37

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND70ND
2013ND70ND
2014ND70ND
2015ND30ND
2016ND60ND
2017ND70ND

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
2012-02-212706-001-1340ND
2012-02-212706-007-1350ND
2012-08-202706-009-1200ND
2012-08-202706-003-1130ND
2012-08-202706-008-1225ND
2012-08-202706-004-1215ND
2012-08-202706-005-1140ND
2013-02-252706-001-1000ND
2013-02-252706-007-1010ND
2013-08-122706-005-1230ND
2013-08-122706-003-1240ND
2013-08-122706-004-1220ND
2013-08-122706-008-1210ND
2013-08-122706-009-1255ND
2014-02-202706-007-1020ND
2014-02-202706-001-0955ND
2014-08-222706-004-1000ND
2014-08-222706-009-1145ND
2014-08-222706-005-1035ND
2014-08-222706-003-1015ND
2014-08-222706-008-1100ND
2015-02-192706-007-1205ND
2015-02-192706-001-1145ND
2015-11-242706-004-0950ND
2016-02-249588-007-1020ND
2016-03-119588-001-1015ND
2016-08-259588-008-0835ND
2016-08-259588-005-0820ND
2016-08-259588-003-0845ND
2016-11-229588-004-0850ND
2017-02-219588-007-0925ND
2017-02-219588-001-0900ND
2017-06-149588-009-1025ND
2017-08-309588-008-0850ND
2017-08-309588-005-0915ND
2017-08-309588-003-0905ND
2017-10-139588-004-0855ND