Know Your Environment. Protect Your Health.

Chloromethane

City of Richwood

NOTE: City of Richwood purchases water from Brazosport Water Authority which is required to test for chloromethane. Sample information shown below was taken by Brazosport Water Authority.

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.

 

7

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND30ND
2019ND30ND
2020ND30ND
2021ND30ND
2022ND30ND
2023ND30ND

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

NOTE: City of Richwood purchases water from Brazosport Water Authority which is required to test for chloromethane. Sample information shown below was taken by Brazosport Water Authority.

Date Lab ID Result
2018-07-12AE33163ND
2019-07-08AE73438ND
2020-08-26AF25689ND
2021-08-16AF66462ND
2022-09-07AG11875ND
2023-08-24AG54042ND
2023-11-13AG63369ND