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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

California Water Service (CWS) - Bakersfield

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

 

152

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND530ND
2015ND510ND
2016ND50ND
2017ND100ND
2018ND220ND
2019ND110ND

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
2014-01-025810-001-1520ND
2014-06-09A4E0742-01AND
2014-06-09A4E0742-09AND
2014-06-16A4E2256-01AND
2014-06-16A4E2253-01AND
2014-06-16A4E2250-01AND
2014-07-14A4F2472-01AND
2014-07-15A4F2476-01AND
2014-07-15A4F2477-01AND
2014-07-15A4F1967-01AND
2014-07-15A4F2473-01AND
2014-07-15A4F1974-01AND
2014-07-17A4F2474-01AND
2014-07-18A4G0683-01AND
2014-07-18A4G0684-01AND
2014-08-11A4G2144-01AND
2014-08-125810-001-1410ND
2014-08-135810-056-1445ND
2014-08-18A4H0210-01AND
2014-08-29A4G2146-01AND
2014-09-08A4H0209-01AND
2014-09-08A4G2780-01AND
2014-09-08A4H2667-01AND
2014-09-08A4G2782-01AND
2014-09-08A4G2784-01AND
2014-09-08A4G2149-01AND
2014-09-10A4H2706-01AND
2014-09-10A4G2779-01AND
2014-09-18A4I0206-01AND
2014-09-23A4H2659-01AND
2014-09-23A4I1702-01AND
2014-09-23A4I0209-01AND
2014-10-07A4H2671-01AND
2014-10-10A4I2124-01AND
2014-10-13A4J0081-01AND
2014-10-149590-001-1450ND
2014-10-17A4J1137-01AND
2014-10-17A4I2273-01AND
2014-10-209590-002-1115ND
2014-10-209590-005-1130ND
2014-10-209590-006-1138ND
2014-10-209590-026-1400ND
2014-10-209590-050-1215ND
2014-10-209590-091-1237ND
2014-10-219590-004-1245ND
2014-10-24A4H2664-01AND
2014-12-02A4K0896-01AND
2014-12-08A4K2091-01AND
2014-12-08A4K2089-01AND
2014-12-08A4K0902-01AND
2014-12-10A4J2315-01AND
2014-12-269590-001-1115ND
2014-12-309590-001-1548ND
2015-01-05A4L2527-01AND
2015-01-09A4L2605-01AND
2015-01-09A4L2606-01AND
2015-01-09A4L2604-01AND
2015-01-16A5A0581-01AND
2015-01-16A5A0580-01AND
2015-01-23A4K2092-01AND
2015-01-30A5A1899-01AND
2015-02-10A5A1960-01AND
2015-03-16201503180511AMND
2015-03-25201503270215AMND
2015-03-25201503270229AMND
2015-04-07201504090620AMND
2015-04-30201505050051AMND
2015-04-30201505050060AMND
2015-05-059590-001-1035ND
2015-05-11201505130594AMND
2015-05-11201505130582AMND
2015-05-11201505130469AMND
2015-05-129590-001-0855ND
2015-05-129590-251-1415ND
2015-06-09201506120273AMND
2015-06-09201506120192AMND
2015-06-23201506250428AMND
2015-08-25201509010620AMND
2015-08-25201508280056AMND
2015-08-25201508280067AMND
2015-08-25201508280212AMND
2015-08-25201508280105AMND
2015-09-02201509090170AMND
2015-09-03201509090381AMND
2015-09-23201509290327AMND
2015-09-29201510020550AMND
2015-09-30201510020495AMND
2015-09-30201510020602AMND
2015-10-05201510090400AMND
2015-10-05201510090191AMND
2015-10-06201510090455AMND
2015-10-15201510220444AMND
2015-10-20201510220426AMND
2015-10-219590-002-1050ND
2015-10-219590-053-1145ND
2015-10-229590-038-1035ND
2015-10-229590-079-1450ND
2015-10-29201511050556AMND
2015-11-02201511060300AMND
2015-11-09201511130075AMND
2015-11-175810-001-1045ND
2015-11-185810-126-1445ND
2015-11-249590-001-1045ND
2015-12-019590-001-1230ND
2016-01-15201601200776AMND
2016-02-12201602170820AMND
2016-02-12201602170680AMND
2016-08-095810-001-1135ND
2016-08-239590-001-0915ND
2017-03-235810-021-0855ND
2017-07-189590-001-1210ND
2017-07-189590-265-0935ND
2017-07-209590-002-1235ND
2017-07-219590-026-1031ND
2017-07-219590-031-1337ND
2017-08-305810-099-0910ND
2017-08-305810-126-0847ND
2017-12-067625-267-1055ND
2017-12-289590-020-0955ND
2018-01-085810-265-0149ND
2018-01-255810-265-1230ND
2018-04-055810-001-1103ND
2018-04-055810-265-1125ND
2018-04-095810-002-1315ND
2018-04-235810-094-1044ND
2018-06-065810-265-1111ND
2018-06-145810-096-1240ND
2018-06-145810-126-1320ND
2018-06-159590-026-0945ND
2018-07-055810-265-1141ND
2018-07-115810-168-1213ND
2018-07-115810-251-1248ND
2018-08-235810-099-1100ND
2018-08-235810-117-1000ND
2018-08-275810-126-1500ND
2018-08-275810-160-1200ND
2018-10-225810-069-1130ND
2018-10-235810-069-1050ND
2018-11-275810-126-1520ND
2018-12-115810-168-1441ND
2018-12-115810-251-1253ND
2019-01-115810-168-0911ND
2019-01-165810-251-0925ND
2019-01-245810-107-1500ND
2019-01-305810-069-1305ND
2019-03-025810-168-0906ND
2019-03-075810-251-1041ND
2019-05-035810-168-1016ND
2019-05-235810-069-0830ND
2019-05-245810-069-0840ND
2019-08-265810-099-1145ND
2019-08-265810-126-1115ND