Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromodichloromethane

Fort Sam Houston

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

112

Samples

0

Samples exceeding legal limit (MCL)

11

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.369 ppb161ND - 5.90 ppb
20150.0882 ppb171ND - 1.50 ppb
20160.205 ppb192ND - 2.00 ppb
20170.264 ppb223ND - 2.50 ppb
20180.205 ppb192ND - 2.10 ppb
20190.147 ppb192ND - 1.50 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-21AC44181ND
2014-02-21AC44234ND
2014-02-21AC44238ND
2014-02-21AC44180ND
2014-04-17AC51061ND
2014-04-17AC51058ND
2014-04-17AC51059ND
2014-04-17AC51045ND
2014-07-25AC61228ND
2014-07-25AC612175.90 ppb
2014-07-25AC61224ND
2014-07-25AC61226ND
2014-12-09AC74052ND
2014-12-09AC74049ND
2014-12-09AC74056ND
2014-12-09AC74034ND
2015-03-23AC85623ND
2015-03-23AC85498ND
2015-03-23AC85455ND
2015-03-23AC85499ND
2015-03-23AC85457ND
2015-06-16AC96176ND
2015-06-16AC96179ND
2015-06-16AC96175ND
2015-06-16AC96182ND
2015-08-14AD04276ND
2015-08-14AD04253ND
2015-08-14AD04275ND
2015-08-14AD04250ND
2015-10-16AD10993ND
2015-10-16AD109941.50 ppb
2015-10-16AD10991ND
2015-10-16AD10992ND
2016-02-25AD25793ND
2016-02-25AD25698ND
2016-02-25AD25722ND
2016-02-25AD25723ND
2016-02-25AD25729ND
2016-06-16AD40919ND
2016-06-16AD409142.00 ppb
2016-06-16AD40915ND
2016-06-16AD40918ND
2016-09-28AD51620ND
2016-09-28AD516191.90 ppb
2016-09-28AD51622ND
2016-09-28AD51621ND
2016-09-28AD51718ND
2016-12-12AD61647ND
2016-12-12AD61644ND
2016-12-12AD61646ND
2016-12-12AD61643ND
2016-12-15AD62394ND
2017-01-30AD67573ND
2017-01-30AD675751.50 ppb
2017-01-30AD67504ND
2017-01-30AD67505ND
2017-01-30AD67502ND
2017-01-30AD67503ND
2017-04-24AD80717ND
2017-04-24AD80654ND
2017-04-24AD80668ND
2017-04-24AD806632.50 ppb
2017-04-24AD80653ND
2017-04-24AD80715ND
2017-07-07AD88657ND
2017-07-07AD88655ND
2017-07-07AD886561.80 ppb
2017-07-07AD88654ND
2017-07-07AD88708ND
2017-10-10AE00084ND
2017-10-10AE00094ND
2017-10-10AE00095ND
2017-10-10AE00087ND
2017-10-10AE00129ND
2018-01-18AE09245ND
2018-01-18AE09219ND
2018-01-18AE09224ND
2018-01-18AE09227ND
2018-01-18AE09217ND
2018-04-20AE23481ND
2018-04-20AE23471ND
2018-04-20AE23437ND
2018-04-20AE23436ND
2018-04-20AE23438ND
2018-04-20AE23439ND
2018-07-11AE32948ND
2018-07-11AE329471.80 ppb
2018-07-11AE32955ND
2018-07-11AE32954ND
2018-10-17AE43913ND
2018-10-17AE439162.10 ppb
2018-10-17AE43911ND
2018-10-17AE43917ND
2019-01-24AE51287ND
2019-01-24AE51285ND
2019-01-24AE51269ND
2019-01-24AE51211ND
2019-01-24AE51192ND
2019-01-24AE51236ND
2019-01-24AE51195ND
2019-04-08AE61364ND
2019-04-08AE61326ND
2019-04-08AE61365ND
2019-04-08AE61367ND
2019-08-06AE77208ND
2019-08-06AE77217ND
2019-08-06AE77205ND
2019-08-06AE77204ND
2019-10-23AE87398ND
2019-10-23AE873941.50 ppb
2019-10-23AE87393ND
2019-10-23AE874141.30 ppb