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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Lihue-Kapaa

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.

 

45

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND220ND
2015ND230ND
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
2014-07-09201407110393AMND
2014-07-09201407110329AMND
2014-07-09201407110331AMND
2014-07-09201407110388AMND
2014-07-11201407160559AMND
2014-07-11201407150413AMND
2014-07-11201407160644AMND
2014-07-11201407150417AMND
2014-07-11201407160693AMND
2014-07-15201407170587AMND
2014-07-15201407170554AMND
2014-07-15201407170558AMND
2014-07-15201407170502AMND
2014-07-17201407180240AMND
2014-07-17201407180232AMND
2014-07-17201407180252AMND
2014-07-21201407230562AMND
2014-07-21201407230494AMND
2014-07-21201407230566AMND
2014-07-21201407230803AMND
2014-07-29201407310306AMND
2014-10-27201410290419AMND
2015-01-05201501070169AMND
2015-01-05201501070211AMND
2015-01-05201501070217AMND
2015-01-05201501070174AMND
2015-01-06201501080702AMND
2015-01-06201501080712AMND
2015-01-07201501090559AMND
2015-01-07201501090548AMND
2015-01-09201501130599AMND
2015-01-09201501130506AMND
2015-01-09201501140369AMND
2015-01-09201501130614AMND
2015-01-12201501140607AMND
2015-01-12201501140519AMND
2015-01-12201501140527AMND
2015-01-12201501140662AMND
2015-01-14201501160246AMND
2015-01-14201501160193AMND
2015-01-14201501160119AMND
2015-01-14201501160248AMND
2015-01-14201501160239AMND
2015-04-20201504220563AMND
2015-07-31201508050054AMND