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EWG's Tap Water Database — 2019 UPDATE

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Dichloromethane (methylene chloride)

United Wappinger Water Improvement 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.

 

39

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND90ND
2013ND90ND
2014ND80ND
2015N/A00N/A
2016ND80ND
2017ND50ND

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
2012-02-14SU12307ND
2012-02-29CM12388ND
2012-03-28UW12553-4ND
2012-12-05HT122232ND
2012-12-05HT122231ND
2012-12-05AT122238ND
2012-12-05AT122237ND
2012-12-05AT122235ND
2012-12-05HT122233ND
2013-06-05MB13982DND
2013-06-05MB13985DND
2013-12-04AT132305ND
2013-12-04HT132309ND
2013-12-04AT132303ND
2013-12-04HT132310ND
2013-12-04AT132306ND
2013-12-04AT132304ND
2013-12-04HT132308ND
2014-12-0912101426HND
2014-12-0912101426VND
2014-12-0912101427FND
2014-12-0912101427KND
2014-12-0912101426KND
2014-12-0912101426GND
2014-12-0912101426PND
2014-12-0912101427RND
2016-11-29UW164143ND
2016-11-29UW164145ND
2016-11-29UW164139ND
2016-11-29UW164137ND
2016-11-30UW164251FND
2016-11-30UW164252FND
2016-11-30UW164253FND
2016-11-30UW164254FND
2017-11-28UW172959FND
2017-11-28UW172963FND
2017-11-28UW172962FND
2017-11-28UW172961FND
2017-11-28UW172958FND