Know Your Environment. Protect Your Health.

Bromochloromethane

North Castle Water District #1

NOTE: North Castle Water District #1 purchases water from White Plains City which is required to test for bromochloromethane. Sample information shown below was taken by White Plains City.

Bromochloromethane is a tap water disinfection byproduct; it is also used as an intermediate in chemical manufacturing and as a fire extinguishing agent. Disinfection byproducts in drinking water increase the risk of cancer.

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND30ND
2021ND30ND
2022ND50ND
2023ND30ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromochloromethane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer, harm to reproduction and child development, and change to fetal growth and development.

ppb = parts per billion

All test results

NOTE: North Castle Water District #1 purchases water from White Plains City which is required to test for bromochloromethane. Sample information shown below was taken by White Plains City.

Date Lab ID Result
2014-05-13201405140523AMND
2014-05-13201405140702AMND
2014-05-13201405140516AMND
2014-08-06201408070515AMND
2014-08-06201408070509AMND
2014-08-06201408070519AMND
2014-11-05201411060404AMND
2014-11-05201411060232AMND
2014-11-05201411060325AMND
2015-02-04201502060241AMND
2015-02-04201502060224AMND
2015-02-04201502050498AMND
2018-09-24AU20758 POCSND
2019-11-12AV23849 POCSND
2020-03-17AW05444-POCSND
2020-03-17AW05446-POCSND
2020-03-17AW05448-POCSND
2020-08-06AW15047-POCSND
2020-11-09AW21630-POCSND
2021-02-23AX03553-POCSND
2021-02-23AX03555-POCSND
2021-02-23AX03551-POCSND
2021-07-08AX13365-POCSND
2021-09-20AX19183-WP-POCSND
2022-02-15AY02771-POCSND
2022-02-15AY02773-POCSND
2022-02-15AY02769-POCSND
2022-09-12AY16285-POCSND
2022-10-24AY19121-WP-POCSND
2023-02-14AZ02824-POCSND
2023-02-14AZ02821-POCSND
2023-02-14AZ02826-POCSND
2023-07-10AZ12311-POCSND
2023-10-19AZ19383-POCS-WPND