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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

City of Pampa

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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015ND70ND
2016ND30ND
2017ND30ND
2018ND30ND
2019ND30ND

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
2014-06-25Q1423571003ND
2014-06-25Q1423571002ND
2014-10-08201410090239AMND
2014-10-08201410090274AMND
2014-10-08201410090304AMND
2014-12-09201412100769AMND
2015-03-16201503170482AMND
2015-03-16201503170682AMND
2015-03-16201503170721AMND
2015-05-26Q1519314008ND
2015-05-26Q1519314011ND
2015-06-08201506090479AMND
2015-12-01Q1547330001ND
2016-03-15Q1610754008ND
2016-03-15Q1610754006ND
2016-03-15Q1610754001ND
2017-01-31Q1704451002ND
2017-04-26Q1716946013ND
2017-04-26Q1716946011ND
2018-02-05Q1804320013ND
2018-02-05Q1804320008ND
2018-04-18Q1816136004ND
2019-02-13Q1906860003ND
2019-02-13Q1906860005ND
2019-05-15Q1925442002ND