Know Your Environment. Protect Your Health.

Chloromethane

Bradley Waterworks

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.

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.555 ppb64ND - 1.000 ppb
20190.458 ppb54ND - 0.640 ppb
20200.615 ppb43ND - 0.990 ppb
20210.109 ppb91ND - 0.980 ppb
20220.529 ppb52ND - 1.68 ppb
2023ND10ND

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

Date Lab ID Result
2018-02-1218046000301ND
2018-05-2918151004201ND
2018-05-29181510043011.000 ppb
2018-08-13182280029011.000 ppb
2018-08-13182280027020.660 ppb
2018-10-16182910053010.670 ppb
2019-02-25190590007010.520 ppb
2019-05-13191360081010.560 ppb
2019-07-31192130016010.570 ppb
2019-07-3119213001508ND
2019-11-05193110023010.640 ppb
2020-01-2120023000501ND
2020-06-02201560071010.620 ppb
2020-08-18202330059010.850 ppb
2020-11-17203240041010.990 ppb
2021-02-0121035003801ND
2021-02-2321056002701ND
2021-04-1921111001201ND
2021-04-1921111001102ND
2021-04-1921111001301ND
2021-07-26212100089010.980 ppb
2021-07-2621210009002ND
2021-11-1621322000601ND
2021-11-1621322000701ND
2022-02-14O195617-VOC-1ND
2022-04-19O197087-VOC-1ND
2022-09-20O202009-VOC-10.967 ppb
2022-09-20O202008-VOC-1ND
2022-10-11O202728-VOC-11.68 ppb
2023-01-10O205157-VOC-1ND