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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Rio Linda/Alverta Community Water District

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.

MORE ABOUT THIS CONTAMINANT

 

57

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND170ND
2015ND230ND
2016ND30ND
2017ND10ND
2018ND100ND
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
2014-07-235810-016-1145ND
2014-07-235810-017-0850ND
2014-07-235810-018-0904ND
2014-07-235810-019-1306ND
2014-07-235810-022-1215ND
2014-07-235810-025-1235ND
2014-07-235810-031-0932ND
2014-08-14A4H0279-16AND
2014-08-14A4H0279-19AND
2014-08-14A4H0279-31AND
2014-08-14A4H0279-28AND
2014-08-14A4H0279-22AND
2014-08-14A4H0279-25AND
2014-08-14A4H0279-07AND
2014-08-14A4H0279-01AND
2014-08-14A4H0279-13AND
2014-08-14A4H0279-10AND
2015-01-145810-023-0830ND
2015-02-11A5A1419-28AND
2015-02-11A5A1419-04AND
2015-02-11A5A1419-10AND
2015-02-11A5A1419-07AND
2015-02-11A5A1419-01AND
2015-02-11A5A1438-01AND
2015-02-11A5A1419-19AND
2015-02-11A5A1419-25AND
2015-02-11A5A1419-13AND
2015-02-11A5A1419-16AND
2015-02-26A5B1572-01AND
2015-07-305810-019-1300ND
2015-07-305810-016-1205ND
2015-07-305810-017-0920ND
2015-07-305810-021-1126ND
2015-07-305810-022-1232ND
2015-07-305810-023-1321ND
2015-07-305810-020-1053ND
2015-07-305810-031-0950ND
2015-08-26A5H1542-01AND
2015-09-175810-025-0918ND
2015-12-025810-018-1230ND
2016-07-145810-016-1246ND
2016-07-145810-019-1411ND
2016-07-145810-022-1313ND
2017-07-275810-022-1105ND
2018-07-255810-017-0922ND
2018-07-255810-022-1333ND
2018-07-255810-016-1257ND
2018-07-255810-023-0805ND
2018-07-255810-025-0828ND
2018-07-255810-031-1007ND
2018-07-255810-018-0945ND
2018-07-255810-021-1212ND
2018-07-255810-020-1130ND
2018-07-255810-019-1355ND
2019-07-185810-016-1140ND
2019-07-185810-022-1117ND
2019-07-185810-019-1057ND