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EWG's Tap Water Database — 2019 UPDATE

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Dichloromethane (methylene chloride)

City of Stuart - Water Plant

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.

 

64

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND50ND
2014ND60ND
2015ND40ND
2016ND50ND
2017ND400ND

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 Result
2012-03-05ND
2012-06-06ND
2012-07-11ND
2012-10-12ND
2013-04-04ND
2013-06-14ND
2013-06-14ND
2013-08-27ND
2013-10-24ND
2014-01-07ND
2014-04-04ND
2014-07-07ND
2014-08-15ND
2014-11-04ND
2014-12-16ND
2015-01-07ND
2015-04-01ND
2015-09-24ND
2015-12-24ND
2016-01-07ND
2016-04-11ND
2016-06-03ND
2016-07-26ND
2016-10-19ND
2017-01-17ND
2017-04-04ND
2017-07-27ND
2017-08-23ND
2017-08-23ND
2017-08-23ND
2017-08-23ND
2017-08-23ND
2017-08-23ND
2017-08-23ND
2017-08-23ND
2017-09-21ND
2017-09-27ND
2017-09-27ND
2017-09-27ND
2017-09-27ND
2017-09-27ND
2017-09-27ND
2017-09-27ND
2017-09-27ND
2017-10-20ND
2017-11-22ND
2017-11-22ND
2017-11-22ND
2017-11-22ND
2017-11-22ND
2017-11-22ND
2017-11-22ND
2017-11-22ND
2017-11-22ND
2017-11-22ND
2017-12-06ND
2017-12-06ND
2017-12-06ND
2017-12-06ND
2017-12-06ND
2017-12-06ND
2017-12-06ND
2017-12-06ND
2017-12-06ND