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Dichloromethane (methylene chloride)

East Cherry Creek Valley Water and Sanitation District

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.

 

44

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010ND120ND
2011N/A00N/A
2012ND140ND
2013ND40ND
2014ND40ND
2015ND100ND

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 4 ppb

The 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.

ppb = parts per billion.

EPA Maximum Contaminant
Level (MCL) 5 ppb

The enforceable federal standard that defines the highest level of a contaminant allowed in drinking water.

ppb = parts per billion.

EPA Maximum Contaminant
Level Goal (MCLG)0 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Result
2010-07-21ND
2010-07-21ND
2010-07-21ND
2010-07-22ND
2010-07-22ND
2010-07-22ND
2010-07-22ND
2010-07-22ND
2010-07-27ND
2010-07-27ND
2010-07-27ND
2010-07-27ND
2012-04-12ND
2012-04-12ND
2012-04-13ND
2012-04-19ND
2012-04-23ND
2012-04-26ND
2012-04-26ND
2012-05-04ND
2012-05-10ND
2012-05-17ND
2012-05-17ND
2012-05-25ND
2012-07-13ND
2012-10-25ND
2013-06-05ND
2013-07-17ND
2013-11-14ND
2013-12-05ND
2014-02-21ND
2014-05-19ND
2014-08-18ND
2014-11-19ND
2015-02-03ND
2015-02-03ND
2015-06-08ND
2015-06-08ND
2015-06-08ND
2015-06-08ND
2015-06-23ND
2015-06-23ND
2015-06-23ND
2015-06-23ND