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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

City of Gilroy

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

 

163

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND500ND
20150.0202 ppb481ND - 0.970 ppb
2016ND310ND
2017ND300ND
2018ND40ND
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
2014-01-14A3L2052-11AND
2014-01-14A3L2052-09AND
2014-01-14A3L2052-17AND
2014-01-14A3L2052-15AND
2014-01-14A3L2052-03AND
2014-01-14A3L2052-07AND
2014-01-14A3L2052-05AND
2014-01-155810-001-0925ND
2014-01-155810-002-0947ND
2014-01-155810-007-0835ND
2014-02-125810-001-0822ND
2014-02-125810-002-0853ND
2014-03-205810-001-0813ND
2014-03-205810-002-0800ND
2014-03-24A4C1501-01AND
2014-04-235810-001-0900ND
2014-04-235810-002-0749ND
2014-04-235810-004-0945ND
2014-04-235810-006-1058ND
2014-04-235810-007-1039ND
2014-04-235810-008-0819ND
2014-04-235810-010-0913ND
2014-04-235810-011-0847ND
2014-05-215810-001-0750ND
2014-05-215810-002-0800ND
2014-05-29A4E2213-01AND
2014-06-125810-001-0747ND
2014-06-125810-002-0756ND
2014-07-08A4F1134-16AND
2014-07-08A4F1134-01AND
2014-07-08A4F1134-22AND
2014-07-08A4F1134-07AND
2014-07-08A4F1134-13AND
2014-07-08A4F1134-10AND
2014-07-175810-001-0946ND
2014-07-175810-002-0802ND
2014-07-175810-007-1011ND
2014-08-04A4G2633-01AND
2014-08-285810-001-1121ND
2014-08-285810-002-1130ND
2014-09-16A4I0774-01AND
2014-09-175810-001-0801ND
2014-09-175810-002-0822ND
2014-10-155810-001-0759ND
2014-10-155810-002-1050ND
2014-10-155810-007-0836ND
2014-11-195810-002-0748ND
2014-11-245810-001-1040ND
2014-12-225810-001-0930ND
2014-12-225810-002-1000ND
2015-01-215810-001-0822ND
2015-01-215810-002-0845ND
2015-01-215810-007-0925ND
2015-02-115810-001-0815ND
2015-02-115810-002-0755ND
2015-03-105810-001-0740ND
2015-03-105810-002-0751ND
2015-04-225810-001-0915ND
2015-04-225810-002-0944ND
2015-04-225810-004-1305ND
2015-04-225810-006-0845ND
2015-04-225810-007-1142ND
2015-04-225810-008-1215ND
2015-04-225810-009-1239ND
2015-04-225810-010-1110ND
2015-04-225810-011-1040ND
2015-05-205810-006-0945ND
2015-05-205810-007-1300ND
2015-05-205810-008-1025ND
2015-05-205810-009-1100ND
2015-05-205810-010-0810ND
2015-05-215810-001-0800ND
2015-05-215810-002-1010ND
2015-05-215810-004-1250ND
2015-05-215810-011-0955ND
2015-06-225810-001-0800ND
2015-06-225810-002-0820ND
2015-07-205810-001-0812ND
2015-07-205810-002-0830ND
2015-07-205810-007-1022ND
2015-08-195810-001-0802ND
2015-08-195810-001-1225ND
2015-08-195810-002-0817ND
2015-08-195810-002-1250ND
2015-08-195810-004-1320ND
2015-08-195810-006-09480.970 ppb
2015-08-195810-007-1120ND
2015-08-195810-008-1019ND
2015-08-195810-009-1044ND
2015-08-195810-010-1203ND
2015-08-205810-011-0845ND
2015-09-295810-001-0852ND
2015-09-295810-002-0840ND
2015-10-145810-001-1040ND
2015-11-185810-001-0840ND
2015-11-185810-002-0925ND
2015-12-145810-001-0840ND
2015-12-145810-002-0821ND
2016-01-205810-001-0940ND
2016-01-205810-002-0832ND
2016-02-105810-001-0830ND
2016-02-105810-002-0820ND
2016-03-165810-001-1030ND
2016-03-165810-002-1050ND
2016-04-255810-001-0832ND
2016-04-255810-002-1055ND
2016-04-255810-004-0855ND
2016-04-255810-006-0905ND
2016-04-255810-008-0950ND
2016-04-255810-009-0940ND
2016-04-255810-010-1041ND
2016-04-255810-011-1005ND
2016-05-185810-001-0905ND
2016-05-185810-002-0858ND
2016-06-165810-001-0820ND
2016-06-165810-002-0840ND
2016-07-205810-001-0915ND
2016-07-205810-002-0945ND
2016-07-205810-006-1019ND
2016-08-045810-001-1125ND
2016-08-045810-002-1140ND
2016-09-225810-001-0756ND
2016-09-225810-002-0816ND
2016-10-135810-001-0750ND
2016-10-135810-002-0820ND
2016-11-095810-001-0830ND
2016-11-095810-002-0850ND
2016-12-155810-001-0835ND
2016-12-155810-002-0850ND
2017-01-185810-001-0855ND
2017-01-185810-002-0835ND
2017-02-155810-001-0755ND
2017-02-155810-002-0815ND
2017-03-155810-001-0810ND
2017-03-155810-002-0830ND
2017-04-135810-001-0935ND
2017-04-135810-002-0830ND
2017-04-135810-006-0915ND
2017-04-135810-008-1025ND
2017-04-135810-009-1035ND
2017-04-135810-010-1015ND
2017-04-135810-011-0800ND
2017-05-155810-001-1140ND
2017-05-155810-002-1120ND
2017-06-135810-001-0740ND
2017-06-135810-002-0800ND
2017-06-135810-004-0817ND
2017-06-135810-007-0945ND
2017-07-175810-001-1130ND
2017-07-175810-002-1250ND
2017-07-175810-007-1050ND
2017-08-245810-001-0740ND
2017-08-245810-002-0758ND
2017-09-185810-001-0822ND
2017-09-185810-002-0810ND
2017-10-055810-001-0805ND
2017-10-055810-007-0845ND
2017-11-205810-001-1300ND
2017-12-145810-001-0845ND
2018-01-175810-001-0835ND
2018-01-175810-007-1005ND
2018-02-145810-001-0828ND
2018-02-275810-002-1300ND