Bromodichloromethane
Metropolitan District Commission
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 4.73 ppb | 51 | 51 | 2.70 ppb - 7.35 ppb |
2015 | 4.19 ppb | 51 | 51 | 2.52 ppb - 6.12 ppb |
2016 | 4.05 ppb | 51 | 51 | 2.30 ppb - 7.46 ppb |
2017 | 4.67 ppb | 51 | 51 | 2.20 ppb - 7.79 ppb |
2018 | 4.49 ppb | 51 | 51 | 2.25 ppb - 6.96 ppb |
2019 | 4.46 ppb | 51 | 51 | 2.72 ppb - 6.66 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 |
---|---|---|
2014-03-03 | BG16768TTHM | 4.20 ppb |
2014-03-03 | BG16770TTHM | 4.10 ppb |
2014-03-04 | BG16773TTHM | 3.00 ppb |
2014-03-04 | BG16775TTHM | 3.80 ppb |
2014-03-05 | BG16778TTHM | 4.00 ppb |
2014-03-05 | BG16780TTHM | 4.30 ppb |
2014-03-05 | BG16782TTHM | 3.20 ppb |
2014-03-05 | BG16784TTHM | 4.80 ppb |
2014-03-06 | BG16787TTHM | 2.70 ppb |
2014-03-06 | BG16789TTHM | 4.30 ppb |
2014-03-07 | BG16792TTHM | 2.70 ppb |
2014-03-07 | BG16794TTHM | 5.00 ppb |
2014-06-09 | AC67729GE | 6.22 ppb |
2014-06-09 | AC67730GE | 6.10 ppb |
2014-06-09 | AC67731GE | 4.68 ppb |
2014-06-09 | AC67732GE | 3.57 ppb |
2014-06-09 | AC67733GE | 4.95 ppb |
2014-06-09 | AC67734GE | 3.60 ppb |
2014-06-09 | AC67735GE | 4.84 ppb |
2014-06-09 | AC67736GE | 3.25 ppb |
2014-06-09 | AC67737GE | 5.38 ppb |
2014-06-09 | AC67738GE | 4.04 ppb |
2014-06-09 | AC67739GE | 3.28 ppb |
2014-06-09 | AC67740GE | 5.23 ppb |
2014-07-18 | AC71437GE | 3.45 ppb |
2014-07-18 | AC71438GE | 3.13 ppb |
2014-07-21 | AC71441GE | 3.19 ppb |
2014-09-08 | AC77253GE | 6.45 ppb |
2014-09-08 | AC77257GE | 3.51 ppb |
2014-09-09 | AC77256GE | 5.05 ppb |
2014-09-09 | AC77258GE | 4.91 ppb |
2014-09-09 | AC77263GE | 6.90 ppb |
2014-09-10 | AC77249GE | 6.94 ppb |
2014-09-10 | AC77254GE | 4.84 ppb |
2014-09-10 | AC77255GE | 6.31 ppb |
2014-09-11 | AC77259GE | 3.69 ppb |
2014-09-11 | AC77260GE | 6.29 ppb |
2014-09-12 | AC77250GE | 6.93 ppb |
2014-09-12 | AC77251GE | 7.35 ppb |
2014-12-01 | AC84506GE | 5.29 ppb |
2014-12-01 | AC84510GE | 5.86 ppb |
2014-12-02 | AC84505GE | 7.32 ppb |
2014-12-02 | AC84509GE | 4.87 ppb |
2014-12-02 | AC84511GE | 4.60 ppb |
2014-12-02 | AC84512GE | 3.38 ppb |
2014-12-03 | AC84502GE | 5.68 ppb |
2014-12-03 | AC84503GE | 4.88 ppb |
2014-12-03 | AC84507GE | 4.22 ppb |
2014-12-03 | AC84508GE | 5.01 ppb |
2014-12-04 | AC84513GE | 5.68 ppb |
2014-12-05 | AC84504GE | 4.15 ppb |
2015-03-09 | BH83411TTHM | 3.90 ppb |
2015-03-09 | BH83412TTHM | 4.20 ppb |
2015-03-10 | BH83416TTHM | 5.00 ppb |
2015-03-10 | BH83414TTHM | 2.80 ppb |
2015-03-10 | BH83415TTHM | 3.60 ppb |
2015-03-11 | BH83421TTHM | 5.00 ppb |
2015-03-11 | BH83418TTHM | 4.40 ppb |
2015-03-11 | BH83419TTHM | 4.30 ppb |
2015-03-11 | BH83420TTHM | 3.40 ppb |
2015-03-12 | BH83424TTHM | 4.30 ppb |
2015-03-12 | BH83423TTHM | 3.10 ppb |
2015-03-13 | BH83426TTHM | 2.90 ppb |
2015-06-01 | AC99952GE | 4.31 ppb |
2015-06-01 | AC99948GE | 4.62 ppb |
2015-06-02 | AC99951GE | 3.15 ppb |
2015-06-02 | AC99947GE | 5.32 ppb |
2015-06-02 | AC99953GE | 3.56 ppb |
2015-06-03 | AC99950GE | 4.65 ppb |
2015-06-03 | AC99944GE | 5.80 ppb |
2015-06-03 | AC99949GE | 3.65 ppb |
2015-06-04 | AC99955GE | 5.27 ppb |
2015-06-04 | AC99945GE | 4.52 ppb |
2015-06-04 | AC99954GE | 3.57 ppb |
2015-06-05 | AC99946GE | 3.07 ppb |
2015-06-08 | AC99641GE | 2.89 ppb |
2015-06-08 | AC99645GE | 2.80 ppb |
2015-06-08 | AC99642GE | 2.52 ppb |
2015-09-08 | AD08699GE | 4.65 ppb |
2015-09-08 | AD08698GE | 5.27 ppb |
2015-09-08 | AD08702GE | 4.49 ppb |
2015-09-08 | AD08704GE | 4.30 ppb |
2015-09-09 | AD08695GE | 6.12 ppb |
2015-09-09 | AD08701GE | 5.60 ppb |
2015-09-09 | AD08696GE | 5.79 ppb |
2015-09-09 | AD08700GE | 4.28 ppb |
2015-09-10 | AD08706GE | 4.73 ppb |
2015-09-10 | AD08705GE | 2.94 ppb |
2015-09-11 | AD08703GE | 3.91 ppb |
2015-09-11 | AD08697GE | 4.06 ppb |
2015-11-30 | AD16140GE | 4.17 ppb |
2015-11-30 | AD16144GE | 5.10 ppb |
2015-12-01 | AD16143GE | 3.07 ppb |
2015-12-01 | AD16139GE | 5.60 ppb |
2015-12-01 | AD16145GE | 3.70 ppb |
2015-12-02 | AD16141GE | 3.70 ppb |
2015-12-02 | AD16137GE | 4.37 ppb |
2015-12-02 | AD16142GE | 4.52 ppb |
2015-12-02 | AD16136GE | 5.01 ppb |
2015-12-04 | AD16147GE | 5.38 ppb |
2015-12-04 | AD16146GE | 3.36 ppb |
2015-12-05 | AD16138GE | 2.83 ppb |
2016-02-29 | AD24009GE | 4.91 ppb |
2016-02-29 | AD24010GE | 4.09 ppb |
2016-02-29 | AD24014GE | 4.66 ppb |
2016-02-29 | AD24015GE | 3.70 ppb |
2016-03-01 | AD24013GE | 3.23 ppb |
2016-03-01 | AD24016GE | 2.30 ppb |
2016-03-02 | AD24011GE | 3.63 ppb |
2016-03-02 | AD24012GE | 4.32 ppb |
2016-03-02 | AD24006GE | 4.69 ppb |
2016-03-02 | AD24007GE | 4.11 ppb |
2016-03-03 | AD24017GE | 4.38 ppb |
2016-03-04 | AD24008GE | 2.92 ppb |
2016-05-30 | AD32107GE | 3.17 ppb |
2016-05-30 | AD32112GE | 3.29 ppb |
2016-05-31 | AD32110GE | 2.68 ppb |
2016-05-31 | AD32111GE | 4.07 ppb |
2016-05-31 | AD32106GE | 3.85 ppb |
2016-06-01 | AD32103GE | 4.80 ppb |
2016-06-01 | AD32104GE | 3.29 ppb |
2016-06-01 | AD32108GE | 2.69 ppb |
2016-06-01 | AD32109GE | 3.97 ppb |
2016-06-02 | AD32113GE | 2.52 ppb |
2016-06-02 | AD32114GE | 3.91 ppb |
2016-06-03 | AD32105GE | 2.81 ppb |
2016-06-15 | AD32724GE | 3.50 ppb |
2016-06-15 | AD32723GE | 2.51 ppb |
2016-06-16 | AD32722GE | 3.03 ppb |
2016-09-12 | AD41850GE | 4.41 ppb |
2016-09-12 | AD41846GE | 5.69 ppb |
2016-09-13 | AD41849GE | 4.64 ppb |
2016-09-13 | AD41851GE | 4.85 ppb |
2016-09-13 | AD41845GE | 7.46 ppb |
2016-09-14 | AD41842GE | 6.40 ppb |
2016-09-14 | AD41843GE | 6.48 ppb |
2016-09-14 | AD41847GE | 3.92 ppb |
2016-09-14 | AD41848GE | 5.46 ppb |
2016-09-15 | AD41852GE | 3.96 ppb |
2016-09-15 | AD41853GE | 5.27 ppb |
2016-09-16 | AD41844GE | 3.78 ppb |
2016-12-05 | AD49844GE | 3.71 ppb |
2016-12-05 | AD49848GE | 4.44 ppb |
2016-12-06 | AD49843GE | 5.34 ppb |
2016-12-06 | AD49847GE | 2.92 ppb |
2016-12-06 | AD49849GE | 3.45 ppb |
2016-12-07 | AD49845GE | 3.76 ppb |
2016-12-07 | AD49846GE | 4.10 ppb |
2016-12-07 | AD49840GE | 4.56 ppb |
2016-12-07 | AD49841GE | 3.84 ppb |
2016-12-08 | AD49850GE | 3.35 ppb |
2016-12-09 | AD49851GE | 5.03 ppb |
2016-12-09 | AD49842GE | 2.66 ppb |
2017-03-06 | AD57222GE | 4.29 ppb |
2017-03-06 | AD57226GE | 4.01 ppb |
2017-03-07 | AD57227GE | 4.04 ppb |
2017-03-07 | AD57221GE | 5.48 ppb |
2017-03-07 | AD57225GE | 3.12 ppb |
2017-03-08 | AD57218GE | 4.67 ppb |
2017-03-08 | AD57219GE | 4.21 ppb |
2017-03-08 | AD57223GE | 4.40 ppb |
2017-03-08 | AD57224GE | 4.56 ppb |
2017-03-09 | AD57228GE | 3.14 ppb |
2017-03-09 | AD57229GE | 4.43 ppb |
2017-03-10 | AD57220GE | 2.94 ppb |
2017-06-12 | AD65857GE | 5.00 ppb |
2017-06-12 | AD65861GE | 4.59 ppb |
2017-06-13 | AD65856GE | 5.12 ppb |
2017-06-13 | AD65862GE | 3.97 ppb |
2017-06-14 | AD65853GE | 5.23 ppb |
2017-06-14 | AD65854GE | 4.59 ppb |
2017-06-14 | AD65858GE | 3.45 ppb |
2017-06-14 | AD65859GE | 4.27 ppb |
2017-06-15 | AD65860GE | 3.67 ppb |
2017-06-15 | AD65863GE | 3.62 ppb |
2017-06-15 | AD65864GE | 5.25 ppb |
2017-06-16 | AD65855GE | 3.52 ppb |
2017-06-26 | AD66733GE | 2.84 ppb |
2017-06-26 | AD66734GE | 2.20 ppb |
2017-06-27 | AD66735GE | 3.28 ppb |
2017-09-12 | AD74745GE | 7.79 ppb |
2017-09-12 | AD74746GE | 6.59 ppb |
2017-09-12 | AD74749GE | 4.43 ppb |
2017-09-12 | AD74750GE | 6.15 ppb |
2017-09-12 | AD74751GE | 5.20 ppb |
2017-09-13 | AD74742GE | 5.87 ppb |
2017-09-13 | AD74743GE | 6.67 ppb |
2017-09-13 | AD74747GE | 4.93 ppb |
2017-09-13 | AD74748GE | 6.54 ppb |
2017-09-14 | AD74752GE | 4.01 ppb |
2017-09-14 | AD74753GE | 7.01 ppb |
2017-09-15 | AD74744GE | 4.45 ppb |
2017-12-04 | AD82362GE | 5.21 ppb |
2017-12-04 | AD82366GE | 4.59 ppb |
2017-12-05 | AD82367GE | 4.28 ppb |
2017-12-05 | AD82361GE | 6.45 ppb |
2017-12-05 | AD82365GE | 3.85 ppb |
2017-12-06 | AD82358GE | 5.84 ppb |
2017-12-06 | AD82359GE | 5.47 ppb |
2017-12-06 | AD82363GE | 4.70 ppb |
2017-12-06 | AD82364GE | 5.45 ppb |
2017-12-07 | AD82368GE | 2.97 ppb |
2017-12-07 | AD82369GE | 5.90 ppb |
2017-12-08 | AD82360GE | 3.82 ppb |
2018-03-05 | AD89780GE | 4.20 ppb |
2018-03-05 | AD89784GE | 4.40 ppb |
2018-03-06 | AD89779GE | 5.40 ppb |
2018-03-06 | AD89785GE | 3.50 ppb |
2018-03-06 | AD89781GE | 3.80 ppb |
2018-03-06 | AD89782GE | 4.40 ppb |
2018-03-06 | AD89783GE | 3.00 ppb |
2018-03-06 | AD89776GE | 4.50 ppb |
2018-03-06 | AD89777GE | 4.30 ppb |
2018-03-08 | AD89786GE | 3.00 ppb |
2018-03-08 | AD89787GE | 4.30 ppb |
2018-03-09 | AD89778GE | 2.80 ppb |
2018-06-11 | AD98391GE | 4.71 ppb |
2018-06-11 | AD98395GE | 4.66 ppb |
2018-06-12 | AD98396GE | 3.82 ppb |
2018-06-12 | AD98390GE | 6.15 ppb |
2018-06-12 | AD98394GE | 3.34 ppb |
2018-06-13 | AD98387GE | 5.53 ppb |
2018-06-13 | AD98388GE | 4.42 ppb |
2018-06-13 | AD98392GE | 3.50 ppb |
2018-06-13 | AD98393GE | 4.21 ppb |
2018-06-14 | AD98397GE | 3.54 ppb |
2018-06-14 | AD98398GE | 5.35 ppb |
2018-06-15 | AD98389GE | 3.19 ppb |
2018-07-16 | AE00911GE | 2.94 ppb |
2018-07-16 | AE00927GE | 3.08 ppb |
2018-07-16 | AE00912GE | 2.25 ppb |
2018-09-05 | AE06391GE | 6.07 ppb |
2018-09-05 | AE06392GE | 5.65 ppb |
2018-09-05 | AE06396GE | 4.20 ppb |
2018-09-05 | AE06397GE | 4.98 ppb |
2018-09-06 | AE06394GE | 5.77 ppb |
2018-09-06 | AE06399GE | 5.33 ppb |
2018-09-06 | AE06400GE | 4.32 ppb |
2018-09-06 | AE06401GE | 3.78 ppb |
2018-09-06 | AE06402GE | 5.95 ppb |
2018-09-07 | AE06393GE | 3.67 ppb |
2018-09-07 | AE06395GE | 5.46 ppb |
2018-09-07 | AE06398GE | 4.68 ppb |
2018-12-03 | AE14329GE | 6.96 ppb |
2018-12-03 | AE14330GE | 5.49 ppb |
2018-12-03 | AE14334GE | 4.77 ppb |
2018-12-04 | AE14335GE | 4.64 ppb |
2018-12-04 | AE14333GE | 3.86 ppb |
2018-12-05 | AE14331GE | 5.75 ppb |
2018-12-05 | AE14332GE | 5.48 ppb |
2018-12-05 | AE14326GE | 5.62 ppb |
2018-12-05 | AE14327GE | 5.44 ppb |
2018-12-06 | AE14336GE | 3.05 ppb |
2018-12-06 | AE14337GE | 6.03 ppb |
2018-12-07 | AE14328GE | 3.63 ppb |
2019-03-11 | AE22328GE | 3.80 ppb |
2019-03-11 | AE22324GE | 3.87 ppb |
2019-03-12 | AE22327GE | 2.84 ppb |
2019-03-12 | AE22329GE | 3.61 ppb |
2019-03-12 | AE22323GE | 4.77 ppb |
2019-03-13 | AE22320GE | 4.17 ppb |
2019-03-13 | AE22321GE | 3.70 ppb |
2019-03-13 | AE22325GE | 4.09 ppb |
2019-03-13 | AE22326GE | 3.96 ppb |
2019-03-14 | AE22330GE | 3.03 ppb |
2019-03-14 | AE22331GE | 4.43 ppb |
2019-03-15 | AE22322GE | 2.74 ppb |
2019-06-03 | AE30192GE | 4.98 ppb |
2019-06-03 | AE30196GE | 5.22 ppb |
2019-06-04 | AE30197GE | 4.23 ppb |
2019-06-04 | AE30191GE | 6.66 ppb |
2019-06-04 | AE30195GE | 3.96 ppb |
2019-06-05 | AE30193GE | 4.09 ppb |
2019-06-05 | AE30194GE | 4.79 ppb |
2019-06-05 | AE30188GE | 5.42 ppb |
2019-06-05 | AE30189GE | 5.07 ppb |
2019-06-05 | AE29314GE | 2.96 ppb |
2019-06-05 | AE29313GE | 3.18 ppb |
2019-06-05 | AE29315GE | 2.72 ppb |
2019-06-06 | AE30198GE | 4.06 ppb |
2019-06-06 | AE30199GE | 6.05 ppb |
2019-06-07 | AE30190GE | 3.58 ppb |
2019-09-09 | AE38255GE | 5.78 ppb |
2019-09-09 | AE38259GE | 5.18 ppb |
2019-09-10 | AE38260GE | 4.78 ppb |
2019-09-10 | AE38258GE | 4.66 ppb |
2019-09-10 | AE38254GE | 5.96 ppb |
2019-09-11 | AE38256GE | 4.68 ppb |
2019-09-11 | AE38257GE | 5.75 ppb |
2019-09-11 | AE38251GE | 5.86 ppb |
2019-09-11 | AE38252GE | 4.14 ppb |
2019-09-12 | AE38261GE | 3.91 ppb |
2019-09-12 | AE38262GE | 6.36 ppb |
2019-09-13 | AE38253GE | 4.17 ppb |
2019-12-02 | AE45710GE | 4.55 ppb |
2019-12-02 | AE45714GE | 4.75 ppb |
2019-12-03 | AE45715GE | 4.14 ppb |
2019-12-03 | AE45709GE | 5.62 ppb |
2019-12-03 | AE45713GE | 3.43 ppb |
2019-12-04 | AE45706GE | 5.25 ppb |
2019-12-04 | AE45707GE | 4.66 ppb |
2019-12-04 | AE45711GE | 4.77 ppb |
2019-12-04 | AE45712GE | 5.43 ppb |
2019-12-05 | AE45716GE | 2.84 ppb |
2019-12-05 | AE45717GE | 5.99 ppb |
2019-12-06 | AE45708GE | 3.03 ppb |