Dibromochloromethane
Metropolitan District Commission
Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 0.0364 ppb | 51 | 3 | ND - 0.668 ppb |
2015 | 0.109 ppb | 51 | 10 | ND - 0.710 ppb |
2016 | 0.158 ppb | 51 | 13 | ND - 0.789 ppb |
2017 | 0.0879 ppb | 51 | 7 | ND - 0.921 ppb |
2018 | 0.0622 ppb | 51 | 5 | ND - 0.752 ppb |
2019 | 0.0506 ppb | 51 | 4 | ND - 0.702 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.1 ppb
The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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 |
---|---|---|
2014-03-03 | BG16768TTHM | ND |
2014-03-03 | BG16770TTHM | ND |
2014-03-04 | BG16773TTHM | ND |
2014-03-04 | BG16775TTHM | ND |
2014-03-05 | BG16778TTHM | ND |
2014-03-05 | BG16780TTHM | ND |
2014-03-05 | BG16782TTHM | ND |
2014-03-05 | BG16784TTHM | ND |
2014-03-06 | BG16787TTHM | ND |
2014-03-06 | BG16789TTHM | ND |
2014-03-07 | BG16792TTHM | ND |
2014-03-07 | BG16794TTHM | ND |
2014-06-09 | AC67729GE | ND |
2014-06-09 | AC67730GE | ND |
2014-06-09 | AC67731GE | ND |
2014-06-09 | AC67732GE | ND |
2014-06-09 | AC67733GE | ND |
2014-06-09 | AC67734GE | ND |
2014-06-09 | AC67735GE | ND |
2014-06-09 | AC67736GE | ND |
2014-06-09 | AC67737GE | 0.578 ppb |
2014-06-09 | AC67738GE | ND |
2014-06-09 | AC67739GE | ND |
2014-06-09 | AC67740GE | 0.612 ppb |
2014-07-18 | AC71437GE | ND |
2014-07-18 | AC71438GE | ND |
2014-07-21 | AC71441GE | ND |
2014-09-08 | AC77253GE | ND |
2014-09-08 | AC77257GE | ND |
2014-09-09 | AC77256GE | ND |
2014-09-09 | AC77258GE | ND |
2014-09-09 | AC77263GE | ND |
2014-09-10 | AC77249GE | ND |
2014-09-10 | AC77254GE | ND |
2014-09-10 | AC77255GE | ND |
2014-09-11 | AC77259GE | ND |
2014-09-11 | AC77260GE | 0.668 ppb |
2014-09-12 | AC77250GE | ND |
2014-09-12 | AC77251GE | ND |
2014-12-01 | AC84506GE | ND |
2014-12-01 | AC84510GE | ND |
2014-12-02 | AC84505GE | ND |
2014-12-02 | AC84509GE | ND |
2014-12-02 | AC84511GE | ND |
2014-12-02 | AC84512GE | ND |
2014-12-03 | AC84502GE | ND |
2014-12-03 | AC84503GE | ND |
2014-12-03 | AC84507GE | ND |
2014-12-03 | AC84508GE | ND |
2014-12-04 | AC84513GE | ND |
2014-12-05 | AC84504GE | ND |
2015-03-09 | BH83412TTHM | ND |
2015-03-09 | BH83411TTHM | ND |
2015-03-10 | BH83416TTHM | ND |
2015-03-10 | BH83414TTHM | ND |
2015-03-10 | BH83415TTHM | ND |
2015-03-11 | BH83418TTHM | ND |
2015-03-11 | BH83419TTHM | ND |
2015-03-11 | BH83421TTHM | ND |
2015-03-11 | BH83420TTHM | ND |
2015-03-12 | BH83423TTHM | ND |
2015-03-12 | BH83424TTHM | ND |
2015-03-13 | BH83426TTHM | ND |
2015-06-01 | AC99952GE | ND |
2015-06-01 | AC99948GE | ND |
2015-06-02 | AC99951GE | ND |
2015-06-02 | AC99953GE | ND |
2015-06-02 | AC99947GE | ND |
2015-06-03 | AC99950GE | ND |
2015-06-03 | AC99949GE | ND |
2015-06-03 | AC99944GE | ND |
2015-06-04 | AC99955GE | 0.588 ppb |
2015-06-04 | AC99954GE | ND |
2015-06-04 | AC99945GE | ND |
2015-06-05 | AC99946GE | ND |
2015-06-08 | AC99641GE | ND |
2015-06-08 | AC99645GE | ND |
2015-06-08 | AC99642GE | ND |
2015-09-08 | AD08698GE | 0.570 ppb |
2015-09-08 | AD08704GE | ND |
2015-09-08 | AD08702GE | ND |
2015-09-08 | AD08699GE | 0.500 ppb |
2015-09-09 | AD08696GE | 0.500 ppb |
2015-09-09 | AD08701GE | 0.500 ppb |
2015-09-09 | AD08695GE | 0.560 ppb |
2015-09-09 | AD08700GE | ND |
2015-09-10 | AD08705GE | ND |
2015-09-10 | AD08706GE | 0.600 ppb |
2015-09-11 | AD08697GE | ND |
2015-09-11 | AD08703GE | 0.530 ppb |
2015-11-30 | AD16144GE | ND |
2015-11-30 | AD16140GE | ND |
2015-12-01 | AD16139GE | 0.510 ppb |
2015-12-01 | AD16145GE | ND |
2015-12-01 | AD16143GE | ND |
2015-12-02 | AD16136GE | ND |
2015-12-02 | AD16141GE | ND |
2015-12-02 | AD16142GE | ND |
2015-12-02 | AD16137GE | ND |
2015-12-04 | AD16147GE | 0.710 ppb |
2015-12-04 | AD16146GE | ND |
2015-12-05 | AD16138GE | ND |
2016-02-29 | AD24009GE | ND |
2016-02-29 | AD24010GE | ND |
2016-02-29 | AD24014GE | ND |
2016-02-29 | AD24015GE | ND |
2016-03-01 | AD24016GE | ND |
2016-03-01 | AD24013GE | ND |
2016-03-02 | AD24006GE | ND |
2016-03-02 | AD24007GE | ND |
2016-03-02 | AD24011GE | ND |
2016-03-02 | AD24012GE | ND |
2016-03-03 | AD24017GE | ND |
2016-03-04 | AD24008GE | ND |
2016-05-30 | AD32107GE | ND |
2016-05-30 | AD32112GE | ND |
2016-05-31 | AD32106GE | ND |
2016-05-31 | AD32110GE | ND |
2016-05-31 | AD32111GE | ND |
2016-06-01 | AD32108GE | ND |
2016-06-01 | AD32109GE | ND |
2016-06-01 | AD32103GE | ND |
2016-06-01 | AD32104GE | ND |
2016-06-02 | AD32113GE | ND |
2016-06-02 | AD32114GE | ND |
2016-06-03 | AD32105GE | ND |
2016-06-15 | AD32724GE | ND |
2016-06-15 | AD32723GE | ND |
2016-06-16 | AD32722GE | ND |
2016-09-12 | AD41846GE | 0.647 ppb |
2016-09-12 | AD41850GE | 0.517 ppb |
2016-09-13 | AD41851GE | 0.511 ppb |
2016-09-13 | AD41849GE | ND |
2016-09-13 | AD41845GE | 0.789 ppb |
2016-09-14 | AD41847GE | ND |
2016-09-14 | AD41848GE | 0.597 ppb |
2016-09-14 | AD41842GE | 0.700 ppb |
2016-09-14 | AD41843GE | 0.620 ppb |
2016-09-15 | AD41852GE | 0.513 ppb |
2016-09-15 | AD41853GE | 0.735 ppb |
2016-09-16 | AD41844GE | ND |
2016-12-05 | AD49844GE | ND |
2016-12-05 | AD49848GE | 0.576 ppb |
2016-12-06 | AD49849GE | ND |
2016-12-06 | AD49843GE | 0.610 ppb |
2016-12-06 | AD49847GE | ND |
2016-12-07 | AD49845GE | ND |
2016-12-07 | AD49846GE | ND |
2016-12-07 | AD49840GE | 0.520 ppb |
2016-12-07 | AD49841GE | ND |
2016-12-08 | AD49850GE | ND |
2016-12-09 | AD49851GE | 0.710 ppb |
2016-12-09 | AD49842GE | ND |
2017-03-06 | AD57222GE | ND |
2017-03-06 | AD57226GE | ND |
2017-03-07 | AD57221GE | ND |
2017-03-07 | AD57225GE | ND |
2017-03-07 | AD57227GE | ND |
2017-03-08 | AD57223GE | ND |
2017-03-08 | AD57224GE | ND |
2017-03-08 | AD57218GE | ND |
2017-03-08 | AD57219GE | ND |
2017-03-09 | AD57228GE | ND |
2017-03-09 | AD57229GE | 0.510 ppb |
2017-03-10 | AD57220GE | ND |
2017-06-12 | AD65857GE | ND |
2017-06-12 | AD65861GE | ND |
2017-06-13 | AD65856GE | ND |
2017-06-13 | AD65862GE | ND |
2017-06-14 | AD65853GE | ND |
2017-06-14 | AD65854GE | ND |
2017-06-14 | AD65858GE | ND |
2017-06-14 | AD65859GE | ND |
2017-06-15 | AD65860GE | ND |
2017-06-15 | AD65863GE | ND |
2017-06-15 | AD65864GE | 0.710 ppb |
2017-06-16 | AD65855GE | ND |
2017-06-26 | AD66733GE | ND |
2017-06-26 | AD66734GE | ND |
2017-06-27 | AD66735GE | ND |
2017-09-12 | AD74745GE | 0.628 ppb |
2017-09-12 | AD74746GE | 0.534 ppb |
2017-09-12 | AD74749GE | ND |
2017-09-12 | AD74750GE | 0.641 ppb |
2017-09-12 | AD74751GE | ND |
2017-09-13 | AD74747GE | ND |
2017-09-13 | AD74748GE | ND |
2017-09-13 | AD74742GE | ND |
2017-09-13 | AD74743GE | ND |
2017-09-14 | AD74752GE | 0.539 ppb |
2017-09-14 | AD74753GE | 0.921 ppb |
2017-09-15 | AD74744GE | ND |
2017-12-04 | AD82362GE | ND |
2017-12-04 | AD82366GE | ND |
2017-12-05 | AD82361GE | ND |
2017-12-05 | AD82365GE | ND |
2017-12-05 | AD82367GE | ND |
2017-12-06 | AD82363GE | ND |
2017-12-06 | AD82364GE | ND |
2017-12-06 | AD82358GE | ND |
2017-12-06 | AD82359GE | ND |
2017-12-07 | AD82368GE | ND |
2017-12-07 | AD82369GE | ND |
2017-12-08 | AD82360GE | ND |
2018-03-05 | AD89780GE | ND |
2018-03-05 | AD89784GE | ND |
2018-03-06 | AD89785GE | ND |
2018-03-06 | AD89779GE | ND |
2018-03-06 | AD89781GE | ND |
2018-03-06 | AD89782GE | ND |
2018-03-06 | AD89783GE | ND |
2018-03-06 | AD89776GE | ND |
2018-03-06 | AD89777GE | ND |
2018-03-08 | AD89786GE | ND |
2018-03-08 | AD89787GE | 0.600 ppb |
2018-03-09 | AD89778GE | ND |
2018-06-11 | AD98391GE | ND |
2018-06-11 | AD98395GE | ND |
2018-06-12 | AD98396GE | ND |
2018-06-12 | AD98390GE | ND |
2018-06-12 | AD98394GE | ND |
2018-06-13 | AD98392GE | ND |
2018-06-13 | AD98393GE | ND |
2018-06-13 | AD98387GE | ND |
2018-06-13 | AD98388GE | ND |
2018-06-14 | AD98397GE | ND |
2018-06-14 | AD98398GE | 0.695 ppb |
2018-06-15 | AD98389GE | ND |
2018-07-16 | AE00911GE | ND |
2018-07-16 | AE00927GE | ND |
2018-07-16 | AE00912GE | ND |
2018-09-05 | AE06391GE | ND |
2018-09-05 | AE06392GE | ND |
2018-09-05 | AE06396GE | ND |
2018-09-05 | AE06397GE | ND |
2018-09-06 | AE06399GE | 0.506 ppb |
2018-09-06 | AE06400GE | ND |
2018-09-06 | AE06401GE | ND |
2018-09-06 | AE06402GE | 0.752 ppb |
2018-09-06 | AE06394GE | ND |
2018-09-07 | AE06395GE | ND |
2018-09-07 | AE06393GE | ND |
2018-09-07 | AE06398GE | ND |
2018-12-03 | AE14329GE | ND |
2018-12-03 | AE14330GE | ND |
2018-12-03 | AE14334GE | ND |
2018-12-04 | AE14335GE | ND |
2018-12-04 | AE14333GE | ND |
2018-12-05 | AE14326GE | ND |
2018-12-05 | AE14327GE | ND |
2018-12-05 | AE14331GE | ND |
2018-12-05 | AE14332GE | ND |
2018-12-06 | AE14336GE | ND |
2018-12-06 | AE14337GE | 0.617 ppb |
2018-12-07 | AE14328GE | ND |
2019-03-11 | AE22324GE | ND |
2019-03-11 | AE22328GE | ND |
2019-03-12 | AE22329GE | ND |
2019-03-12 | AE22327GE | ND |
2019-03-12 | AE22323GE | ND |
2019-03-13 | AE22325GE | ND |
2019-03-13 | AE22326GE | ND |
2019-03-13 | AE22320GE | ND |
2019-03-13 | AE22321GE | ND |
2019-03-14 | AE22330GE | ND |
2019-03-14 | AE22331GE | ND |
2019-03-15 | AE22322GE | ND |
2019-06-03 | AE30192GE | ND |
2019-06-03 | AE30196GE | ND |
2019-06-04 | AE30197GE | ND |
2019-06-04 | AE30191GE | ND |
2019-06-04 | AE30195GE | ND |
2019-06-05 | AE30193GE | ND |
2019-06-05 | AE30194GE | ND |
2019-06-05 | AE30188GE | ND |
2019-06-05 | AE30189GE | ND |
2019-06-05 | AE29314GE | ND |
2019-06-05 | AE29313GE | ND |
2019-06-05 | AE29315GE | ND |
2019-06-06 | AE30198GE | ND |
2019-06-06 | AE30199GE | 0.621 ppb |
2019-06-07 | AE30190GE | ND |
2019-09-09 | AE38259GE | 0.563 ppb |
2019-09-09 | AE38255GE | ND |
2019-09-10 | AE38258GE | ND |
2019-09-10 | AE38260GE | ND |
2019-09-10 | AE38254GE | ND |
2019-09-11 | AE38251GE | ND |
2019-09-11 | AE38252GE | ND |
2019-09-11 | AE38256GE | ND |
2019-09-11 | AE38257GE | ND |
2019-09-12 | AE38261GE | ND |
2019-09-12 | AE38262GE | 0.697 ppb |
2019-09-13 | AE38253GE | ND |
2019-12-02 | AE45714GE | ND |
2019-12-02 | AE45710GE | ND |
2019-12-03 | AE45713GE | ND |
2019-12-03 | AE45715GE | ND |
2019-12-03 | AE45709GE | ND |
2019-12-04 | AE45706GE | ND |
2019-12-04 | AE45707GE | ND |
2019-12-04 | AE45711GE | ND |
2019-12-04 | AE45712GE | ND |
2019-12-05 | AE45716GE | ND |
2019-12-05 | AE45717GE | 0.702 ppb |
2019-12-06 | AE45708GE | ND |