Know Your Environment. Protect Your Health.

Chloromethane

East Montana Water System

NOTE: East Montana Water System purchases water from El Paso Water Utilities which is required to test for chloromethane. Sample information shown below was taken by El Paso Water Utilities.

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.

 

180

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND40ND
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND270ND
2019ND200ND
2020ND300ND
2021ND270ND
2022ND200ND
2023ND180ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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

NOTE: East Montana Water System purchases water from El Paso Water Utilities which is required to test for chloromethane. Sample information shown below was taken by El Paso Water Utilities.

Date Lab ID Result
2013-05-201305665-001AND
2013-07-301308004-001AND
2013-07-301308007-001AND
2013-07-301308008-001AND
2013-07-301308006-001AND
2013-07-301308005-001AND
2013-07-311308013-001AND
2013-07-311308014-001AND
2013-07-311308010-001AND
2013-07-311308017-001AND
2013-07-311308019-001AND
2013-07-311308018-001AND
2013-07-311308009-001AND
2013-07-311308012-001AND
2013-07-311308020-001AND
2013-07-311308016-001AND
2013-07-311308022-001AND
2013-07-311308021-001AND
2013-07-311308023-001AND
2013-11-121311391-001AND
2013-11-121311393-001AND
2013-11-121311396-001AND
2013-11-121311392-001AND
2013-11-121311397-001AND
2013-11-121311394-001AND
2013-11-121311395-001AND
2013-11-131311492-001AND
2013-11-131311491-001AND
2013-11-131311490-001AND
2013-11-191311634-001AND
2013-11-191311633-001AND
2013-11-201311721-001AND
2013-11-201311722-001AND
2013-11-201311725-001AND
2013-11-201311723-001AND
2013-11-201311724-001AND
2013-11-201311727-001AND
2013-11-201311726-001AND
2018-01-30Q1803358006ND
2018-01-30Q1803358008ND
2018-01-30Q1803358009ND
2018-01-31Q1803670001ND
2018-01-31Q1803670004ND
2018-01-31Q1803670009ND
2018-01-31Q1803670012ND
2018-02-06Q1805077001ND
2018-06-07Q1822783020ND
2018-07-10Q1826925007ND
2018-07-10Q1826925009ND
2018-07-10Q1826925011ND
2018-07-10Q1826925012ND
2018-11-13Q1845910001ND
2018-11-13Q1845910005ND
2018-11-13Q1845910010ND
2018-11-13Q1845910015ND
2018-11-14Q1845910020ND
2018-11-14Q1845910025ND
2018-11-14Q1845910030ND
2018-11-14Q1845910035ND
2018-11-14Q1845910040ND
2018-11-14Q1845910043ND
2018-11-15Q1846719001ND
2018-11-15Q1846719004ND
2018-11-15Q1846719007ND
2018-11-27Q1847909002ND
2019-02-27Q1908637003ND
2019-02-27Q1908637005ND
2019-02-27Q1908637007ND
2019-02-27Q1908637008ND
2019-02-27Q1908637021ND
2019-02-28Q1908637028ND
2019-02-28Q1908637030ND
2019-04-23Q1916065002ND
2019-04-25Q1916828005ND
2019-05-22Q1927621002ND
2019-05-22Q1927621003ND
2019-05-22Q1927621007ND
2019-05-23Q1928420001ND
2019-05-23Q1928420004ND
2019-05-29Q1929690002ND
2019-05-29Q1929690005ND
2019-06-26Q1940399001ND
2019-07-01Q1941270001ND
2019-08-05Q1950660002ND
2019-11-14Q1976997006ND
2020-01-27Q2003022014ND
2020-01-27Q2003022016ND
2020-01-27Q2003022018ND
2020-01-27Q2003022030ND
2020-01-27Q2003022032ND
2020-01-28Q2003297005ND
2020-01-28Q2003297007ND
2020-02-20Q2006544014ND
2020-02-24Q2006752007ND
2020-02-24Q2006752009ND
2020-02-24Q2006752025ND
2020-03-02Q2007784015ND
2020-03-02Q2007784017ND
2020-03-02Q2007784019ND
2020-04-16Q2015066009ND
2020-04-16Q2015066011ND
2020-04-16Q2015066013ND
2020-05-21Q2020341005ND
2020-05-21Q2020341007ND
2020-06-17Q2024620003ND
2020-07-15Q2028009001ND
2020-07-21Q2028429004ND
2020-07-21Q2028429006ND
2020-09-30Q2038441013ND
2020-09-30Q2038441015ND
2020-09-30Q2038441017ND
2020-10-05Q2038974015ND
2020-10-05Q2038974020ND
2020-11-16Q2045085013ND
2020-11-16Q2045085018ND
2021-02-10Q2104168005ND
2021-02-10Q2104168008ND
2021-02-10Q2104168010ND
2021-02-10Q2104168012ND
2021-02-10Q2104168019ND
2021-02-10Q2104168021ND
2021-02-10Q2104168024ND
2021-04-29Q2110913017ND
2021-04-29Q2110913019ND
2021-06-02Q2114449002ND
2021-07-01Q2117343005ND
2021-07-01Q2117343007ND
2021-07-01Q2117343009ND
2021-10-19Q2129283007ND
2021-10-19Q2129283009ND
2021-10-19Q2129283011ND
2021-10-19Q2129283013ND
2021-10-19Q2129283015ND
2021-10-19Q2129283017ND
2021-10-20Q2129631005ND
2021-10-20Q2129631007ND
2021-10-20Q2129631009ND
2021-10-20Q2129631011ND
2021-10-20Q2129631013ND
2021-10-20Q2129631015ND
2021-10-21Q2129764001ND
2021-10-21Q2129764003ND
2022-01-18Q2202143011ND
2022-01-18Q2202143013ND
2022-01-18Q2202143015ND
2022-01-18Q2202143017ND
2022-01-19Q2202143023ND
2022-01-19Q2202143025ND
2022-05-02Q2213161004ND
2022-05-03Q2213161001ND
2022-05-16Q2214665004ND
2022-05-17Q2214665001ND
2022-07-05Q2218639001ND
2022-07-05Q2218639008ND
2022-07-14Q2220321001ND
2022-09-27Q2229040013ND
2022-11-10Q2233956002ND
2022-11-10Q2233956004ND
2022-11-10Q2233956006ND
2022-11-10Q2233956008ND
2022-11-10Q2233956010ND
2022-11-10Q2233956012ND
2023-05-16Q2318425002ND
2023-05-17Q2318622001ND
2023-06-22Q2323993003ND
2023-06-22Q2323993005ND
2023-06-27Q2325045005ND
2023-06-27Q2325045008ND
2023-06-29Q2325153001ND
2023-07-06Q2326223001ND
2023-07-11Q2326859001ND
2023-07-13Q2327558003ND
2023-10-19Q2344941007ND
2023-10-31Q2346599004ND
2023-11-15Q2349067009ND
2023-11-15Q2349067011ND
2023-11-15Q2349067013ND
2023-11-16Q2349433005ND
2023-11-16Q2349433007ND
2023-11-30Q2351040003ND