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Dichloromethane (methylene chloride)

Del-Co Water Company Inc.

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.

 

31

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010ND60ND
2011ND80ND
2012ND60ND
2013ND30ND
2014ND50ND
2015ND30ND

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 Lab ID Result
2010-02-0810183701ND
2010-02-0810183801ND
2010-05-04103818-03ND
2010-06-07104726-02AND
2010-08-23106930-01ND
2010-11-02108817-01ND
2011-02-0811-10846-02ND
2011-02-0811-10844-02ND
2011-04-2111-12661-01ND
2011-05-0311-12909-02ND
2011-06-1511-14240-01BND
2011-07-0611-14775-01ND
2011-08-0211-15630-01ND
2011-11-0811-19356-03ND
2012-01-0912-10323-01BND
2012-01-0912-10322-01BND
2012-04-0312-13549-02ND
2012-05-3012-16037-03BND
2012-07-0312-17808-01ND
2012-10-0212-22459-01ND
2013-01-0813-10283-01BND
2013-01-0813-10282-01BND
2013-06-1013-17185-01BND
2014-01-0714-10164-03BND
2014-01-0714-10161-03BND
2014-01-0714-10165-01BND
2014-05-0714-15406-01BND
2014-06-3014-18397-01BND
2015-01-0515-10021-01BND
2015-01-0515-10022-01BND
2015-06-0815-17517-01BND