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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Magnolia Waterworks

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.

MORE ABOUT THIS CONTAMINANT

 

186

Samples

0

Samples exceeding legal limit (MCL)

119

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20147.12 ppb35350.310 ppb - 14.6 ppb
20152.59 ppb3126ND - 6.80 ppb
20162.10 ppb3125ND - 10.7 ppb
20171.99 ppb2919ND - 8.43 ppb
20180.837 ppb2915ND - 6.19 ppb
20190.681 ppb3113ND - 4.90 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
2014-01-061400800040211.0 ppb
2014-01-06140080009016.07 ppb
2014-01-06140080002025.30 ppb
2014-01-061400800080111.9 ppb
2014-01-06140080003025.80 ppb
2014-01-06140080008029.28 ppb
2014-01-06140080010010.620 ppb
2014-01-06140080001025.90 ppb
2014-04-01140930012025.00 ppb
2014-04-01140930014014.75 ppb
2014-04-01140930009025.00 ppb
2014-04-01140930011024.70 ppb
2014-04-01140930008015.34 ppb
2014-04-01140930013015.95 ppb
2014-04-01140930010024.80 ppb
2014-04-01140930008024.03 ppb
2014-07-01141840067026.50 ppb
2014-07-01141840071025.20 ppb
2014-07-01141840068025.30 ppb
2014-07-01141840066027.26 ppb
2014-07-01141840070010.310 ppb
2014-07-01141840069016.21 ppb
2014-07-01141840072025.20 ppb
2014-07-01141840066018.50 ppb
2014-10-081428200720211.6 ppb
2014-10-08142820074015.02 ppb
2014-10-08142820075017.92 ppb
2014-10-081428200730211.6 ppb
2014-10-081428200710114.6 ppb
2014-10-081428200760212.3 ppb
2014-10-081428200770212.5 ppb
2014-10-27143030020027.40 ppb
2014-10-27143030019028.50 ppb
2014-10-27143030016028.90 ppb
2014-10-27143030018029.00 ppb
2015-01-05150080074036.57 ppb
2015-01-05150080076030.141 ppb
2015-01-05150080104025.80 ppb
2015-01-05150080105026.10 ppb
2015-01-05150080106025.70 ppb
2015-01-05150080075036.22 ppb
2015-01-05150080103026.80 ppb
2015-04-06150990043022.30 ppb
2015-04-06150990041032.84 ppb
2015-04-06150990048032.20 ppb
2015-04-06150990051021.30 ppb
2015-04-06150990042022.70 ppb
2015-04-06150990049030.0266 ppb
2015-04-06150990050021.30 ppb
2015-05-1915141010502ND
2015-05-1915141010602ND
2015-07-08151900085022.10 ppb
2015-07-08151900084010.144 ppb
2015-07-08151900083011.83 ppb
2015-07-08151900080015.78 ppb
2015-07-08151900081024.90 ppb
2015-07-08151900086022.20 ppb
2015-07-08151900082021.90 ppb
2015-08-11152250048012.56 ppb
2015-10-06152810003023.70 ppb
2015-10-0615281000202ND
2015-10-06152810037014.55 ppb
2015-10-06152810035010.1000 ppb
2015-10-0615281000402ND
2015-10-06152810034010.460 ppb
2015-10-0615281000102ND
2016-01-05160070021012.30 ppb
2016-01-05160070022011.51 ppb
2016-01-05160070025021.90 ppb
2016-01-05160070024021.60 ppb
2016-01-05160070023021.80 ppb
2016-01-05160070026022.10 ppb
2016-02-10160420014012.29 ppb
2016-04-05160980067021.10 ppb
2016-04-05160980066019.21 ppb
2016-04-0516098006402ND
2016-04-05160980063011.32 ppb
2016-04-05160980060021.000 ppb
2016-04-05160980065021.20 ppb
2016-05-2416147006501ND
2016-07-0516189006102ND
2016-07-0516189006002ND
2016-07-0516189005802ND
2016-07-05161890068023.40 ppb
2016-07-05161890062021.52 ppb
2016-07-05161890055020.800 ppb
2016-07-0516189006302ND
2016-07-05161890063010.148 ppb
2016-07-05161890055011.34 ppb
2016-07-05161890062012.98 ppb
2016-10-04162800024022.00 ppb
2016-10-04162800020022.30 ppb
2016-10-04162800025021.70 ppb
2016-10-04162800032026.10 ppb
2016-10-041628000310110.7 ppb
2016-10-04162800017013.12 ppb
2016-10-04162800030011.69 ppb
2017-01-0317005000902ND
2017-01-0317005000802ND
2017-01-0317005000502ND
2017-01-03170050002011.64 ppb
2017-01-03170050013010.0313 ppb
2017-01-03170050014010.0246 ppb
2017-01-0317005001502ND
2017-04-04170950063013.54 ppb
2017-04-04170950062011.61 ppb
2017-04-04170950044016.25 ppb
2017-04-04170950048022.40 ppb
2017-04-04170950064024.50 ppb
2017-04-04170950061021.90 ppb
2017-04-04170950047023.70 ppb
2017-07-03171870001015.19 ppb
2017-07-03171870001023.55 ppb
2017-07-0317187000802ND
2017-07-0317187000901ND
2017-07-03171870010011.43 ppb
2017-07-03171870016024.50 ppb
2017-07-03171870004023.70 ppb
2017-07-0317187000702ND
2017-10-02172780005025.00 ppb
2017-10-0217278000702ND
2017-10-0217278001102ND
2017-10-0217278000802ND
2017-10-02172780001018.43 ppb
2017-10-02172780009010.00243 ppb
2017-10-02172780010010.345 ppb
2018-01-0218004004302ND
2018-01-0218004005502ND
2018-01-02180040053030.00482 ppb
2018-01-0218004004702ND
2018-01-0218004004402ND
2018-01-02180040042031.24 ppb
2018-01-02180040054030.00704 ppb
2018-04-03180950019021.13 ppb
2018-04-03180950028020.0439 ppb
2018-04-0318095002902ND
2018-04-0318095002702ND
2018-04-0318095002002ND
2018-04-0318095002202ND
2018-04-0318095002102ND
2018-07-0318186007402ND
2018-07-03181860090021.60 ppb
2018-07-03181860081031.58 ppb
2018-07-03181860075021.40 ppb
2018-07-03181860072092.32 ppb
2018-07-03181860080030.321 ppb
2018-07-03181860072032.66 ppb
2018-07-03181860073022.50 ppb
2018-10-0118277002902ND
2018-10-01182770025016.19 ppb
2018-10-01182770035010.0896 ppb
2018-10-0118277003601ND
2018-10-01182770028023.20 ppb
2018-10-0118277003002ND
2018-10-0118277003702ND
2019-01-0719010007002ND
2019-01-0719010006302ND
2019-01-07190100069010.279 ppb
2019-01-07190100068010.0595 ppb
2019-01-07190100058014.71 ppb
2019-01-07190100062024.90 ppb
2019-01-07190100061024.70 ppb
2019-02-05190380028010.0596 ppb
2019-02-0519038003001ND
2019-02-05190380029012.80 ppb
2019-04-0119094001302ND
2019-04-0119094001002ND
2019-04-0119094001202ND
2019-04-0119094001602ND
2019-07-0819191000402ND
2019-07-0819191001002ND
2019-07-0819191000802ND
2019-07-08191910004010.0781 ppb
2019-07-0819191000602ND
2019-07-08191910010010.0131 ppb
2019-07-0819191000502ND
2019-07-0819191000902ND
2019-07-08191910009010.0428 ppb
2019-07-0819191000702ND
2019-10-01192760010010.107 ppb
2019-10-0119276000502ND
2019-10-0119276000602ND
2019-10-0119276000802ND
2019-10-01192760002013.17 ppb
2019-10-0119276000702ND
2019-10-01192760009010.182 ppb