Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromochloromethane

Walnut Creek SUD

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND10ND
2014ND40ND
2015ND10ND
2016ND10ND
2017ND10ND
2018ND10ND
2019ND10ND

ppb = parts per billion

All test results

Date Lab ID Result
2013-11-25Q1314628001ND
2014-02-26Q1406239001ND
2014-05-29Q1418243001ND
2014-08-28Q1440032001ND
2014-09-03Q1441134001ND
2015-09-15Q1535843002ND
2016-09-26Q1640029001ND
2017-08-28Q1738759003ND
2018-07-23Q1829023002ND
2019-08-22Q1958473001ND