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EWG's Tap Water Database — 2021 UPDATE

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Dichloromethane (methylene chloride)

Richardson County Rural Water District 2

NOTE: Richardson County Rural Water District 2 purchases water from Falls City, City of which is required to test for dichloromethane (methylene chloride). Sample information shown below was taken by Falls City, City of.

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND80ND
2016ND20ND
2017ND20ND
2018ND20ND
2019ND40ND

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

NOTE: Richardson County Rural Water District 2 purchases water from Falls City, City of which is required to test for dichloromethane (methylene chloride). Sample information shown below was taken by Falls City, City of.

Date Lab ID Result
2014-09-15320896ND
2014-09-22324624ND
2014-09-22324625ND
2015-08-10375618ND
2015-08-10375619ND
2016-08-08ND
2016-08-08ND
2017-04-24ND
2017-08-01ND
2017-08-01ND
2018-08-14567277ND
2018-08-14567278ND
2019-08-12628466ND
2019-08-12628467ND