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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Bella Vista City Water System

Chloromethane is an industrial solvent, aerosol propellant and a refrigerant. It also forms as a byproduct of water disinfection. The EPA classifies chloromethane as possibly carcinogenic to humans.

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015ND240ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 2.69 ppb

The EWG Health Guideline of 2.69 ppb for chloromethane was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2014-07-103061591ND
2014-07-103061529ND
2014-07-103061516ND
2014-07-103061578ND
2014-07-103061543ND
2014-07-103061565ND
2015-01-213174484ND
2015-01-213174452ND
2015-01-213174438ND
2015-01-213174115ND
2015-01-213174087ND
2015-01-213174105ND
2015-01-213174388ND
2015-01-213174069ND
2015-01-213174124ND
2015-01-213174464ND
2015-01-213174096ND
2015-01-213174517ND
2015-01-213174475ND
2015-01-213174426ND
2015-01-213174405ND
2015-07-143280242ND
2015-07-143280359ND
2015-07-143280388ND
2015-07-143280229ND
2015-07-143280651ND
2015-07-143280460ND
2015-07-143281562ND
2015-07-143280310ND
2015-07-143280260ND