Know Your Environment. Protect Your Health.

Dichloromethane (methylene chloride)

Sunchase Meadows

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND50ND
2020ND50ND
2021ND40ND
2022ND20ND
2023ND20ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-10-02Q1839402005ND
2018-10-02Q1839402001ND
2019-04-02Q1913217003ND
2019-04-02Q1913217013ND
2019-04-02Q1913217019ND
2019-08-06Q1951306003ND
2019-10-29Q1974367004ND
2020-01-28Q2003194003ND
2020-03-30Q2012921007ND
2020-03-30Q2012921009ND
2020-09-17Q2037205001ND
2020-10-07Q2039334001ND
2021-08-19Q2122573002ND
2021-08-19Q2122573004ND
2021-08-19Q2122573006ND
2021-10-21Q2129784001ND
2022-02-17Q2205934013ND
2022-02-17Q2205934015ND
2023-10-24Q2345789002ND
2023-10-24Q2345789004ND