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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

Prescott Valley WD Upper

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014ND110ND
2015ND110ND
2016N/A00N/A
2017N/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
2014-12-08201412110346AMND
2014-12-08201412100580AMND
2014-12-08201412110324AMND
2014-12-08201412100471AMND
2014-12-08201412110257AMND
2014-12-08201412110322AMND
2014-12-08201412110334AMND
2014-12-08201412100582AMND
2014-12-08201412100594AMND
2014-12-09201412100849AMND
2014-12-10201412100788AMND
2015-06-09201506100559AMND
2015-06-09201506100400AMND
2015-06-09201506100537AMND
2015-06-09201506100464AMND
2015-06-09201506100411AMND
2015-06-09201506100554AMND
2015-06-09201506100544AMND
2015-06-09201506100370AMND
2015-06-09201506100542AMND
2015-06-09201506100383AMND
2015-07-08201507090353AMND