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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

City of 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

 

129

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.00615 ppb391ND - 0.240 ppb
20150.00522 ppb461ND - 0.240 ppb
2016ND30ND
2017ND130ND
2018ND200ND
2019ND80ND

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
2014-01-06A3L1553-05AND
2014-01-06A3L1553-01AND
2014-01-079590-034-0900ND
2014-02-10A4A1447-09AND
2014-02-20A4A1452-09AND
2014-03-04A4B1894-01AND
2014-03-06A4B1881-01AND
2014-04-25A4C1062-01AND
2014-06-09A4E0751-01AND
2014-06-10A4E0751-05AND
2014-07-07A4F1983-01AND
2014-07-07A4F1981-01AND
2014-07-08A4G0009-01AND
2014-07-09A4F1980-01AND
2014-07-18A4F2508-01AND
2014-07-18A4F2498-01AND
2014-07-18A4F2507-01AND
2014-07-21A4G0687-01AND
2014-07-21A4G0686-01AND
2014-08-13A4G2293-01AND
2014-08-15A4H0217-01AND
2014-08-18A4H0216-01AND
2014-08-18A4H0214-01AND
2014-08-22A4H0215-01AND
2014-08-25A4H0212-01AND
2014-08-26A4G2154-01AND
2014-09-05A4H1747-01AND
2014-09-11A4H2687-01AND
2014-09-12A4I0218-01AND
2014-09-17A4I0214-01A0.240 ppb
2014-10-07A4I0215-01AND
2014-10-13A4H2405-01AND
2014-10-13A4I2289-01AND
2014-10-24A4I0216-01AND
2014-10-285810-104-1408ND
2014-11-13A4J2934-01AND
2014-11-18A4J2932-01AND
2014-12-04A4K2145-01AND
2014-12-04A4K2144-01AND
2015-01-05A4L2538-01AND
2015-01-05A4L2537-01AND
2015-01-07A4L2533-01AND
2015-01-20A5A0607-01AND
2015-01-23A4K2142-01AND
2015-01-30A5A1891-01AND
2015-01-30A5A1957-01AND
2015-01-30A5A1956-01AND
2015-01-30A5A1062-01AND
2015-02-09A5A1893-01AND
2015-03-16201503180680AMND
2015-03-25201503270372AMND
2015-04-07201504090270AMND
2015-04-07201504090607AMND
2015-05-05201505070559AMND
2015-05-05201505070406AMND
2015-05-05201505070586AMND
2015-05-11201505130738AM0.240 ppb
2015-05-129590-105-0918ND
2015-05-129590-110-0928ND
2015-05-129590-111-0923ND
2015-06-02201506040626AMND
2015-06-02201506040457AMND
2015-06-02201506040468AMND
2015-07-15201507170434AMND
2015-07-15201507170443AMND
2015-07-16201507210510AMND
2015-07-17201507210436AMND
2015-07-27201507290619AMND
2015-07-27201507290543AMND
2015-08-059590-050-0830ND
2015-09-11201509150404AMND
2015-09-11201509150495AMND
2015-09-11201509150395AMND
2015-09-29201510020484AMND
2015-10-05201510090434AMND
2015-10-06201510090500AMND
2015-10-19201510220150AMND
2015-10-209590-034-0848ND
2015-11-02201511060311AMND
2015-11-06201511100693AMND
2015-11-175810-039-0940ND
2015-12-019590-049-0945ND
2015-12-219590-105-1040ND
2015-12-219590-110-1050ND
2015-12-219590-111-1045ND
2016-01-14201601200630AMND
2016-03-179590-027-0848ND
2016-08-159590-008-1053ND
2017-01-235810-034-1230ND
2017-02-079590-105-1332ND
2017-02-079590-110-1338ND
2017-02-079590-111-1335ND
2017-03-065810-105-1400ND
2017-03-065810-110-1410ND
2017-03-065810-111-1405ND
2017-07-249590-034-1320ND
2017-07-249590-108-0935ND
2017-07-249590-109-1301ND
2017-08-305810-003-1040ND
2017-11-215810-027-1425ND
2017-11-279590-033-0905ND
2018-04-025810-105-1253ND
2018-04-025810-110-1158ND
2018-04-025810-111-1206ND
2018-04-095810-044-0944ND
2018-04-095810-102-1000ND
2018-04-109590-034-1325ND
2018-06-075810-027-1511ND
2018-07-105810-105-0920ND
2018-07-105810-110-0917ND
2018-07-105810-111-0914ND
2018-10-175810-034-0946ND
2018-10-295810-145-1205ND
2018-11-265810-013-1145ND
2018-11-275810-039-1345ND
2018-11-285810-014-0920ND
2018-11-285810-027-1435ND
2018-12-125810-049-0945ND
2018-12-135810-038-0725ND
2018-12-205810-019-1430ND
2018-12-205810-050-1145ND
2019-01-225810-034-0937ND
2019-01-235810-145-1455ND
2019-03-255810-025-0935ND
2019-05-085810-145-1155ND
2019-08-275810-022-0805ND
2019-08-275810-027-1205ND
2019-08-275810-039-1035ND
2019-12-195810-047-1510ND