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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Manville WSC

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

 

138

Samples

0

Samples exceeding legal limit (MCL)

112

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20148.58 ppb2018ND - 36.3 ppb
20155.00 ppb2620ND - 22.0 ppb
20162.54 ppb2316ND - 15.0 ppb
20173.54 ppb2316ND - 8.90 ppb
20184.84 ppb2322ND - 13.0 ppb
201910.9 ppb2320ND - 32.9 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
2014-03-11AC46497ND
2014-03-11AC464623.70 ppb
2014-03-11AC464632.60 ppb
2014-03-11AC464615.20 ppb
2014-03-11AC464646.10 ppb
2014-06-18AC5730216.0 ppb
2014-06-18AC5735827.4 ppb
2014-06-18AC5735736.3 ppb
2014-06-18AC5735919.3 ppb
2014-06-18AC57356ND
2014-06-18AC572989.20 ppb
2014-06-18AC573002.30 ppb
2014-09-12AC668021.20 ppb
2014-09-12AC668042.80 ppb
2014-09-12AC668052.60 ppb
2014-09-12AC668032.50 ppb
2014-11-24AC727418.20 ppb
2014-11-24AC727759.90 ppb
2014-11-24AC727717.80 ppb
2014-11-24AC727728.40 ppb
2015-03-19AC853576.50 ppb
2015-03-19AC8536722.0 ppb
2015-03-19AC85369ND
2015-03-19AC853514.40 ppb
2015-03-19AC853653.90 ppb
2015-03-19AC852653.20 ppb
2015-03-19AC852853.50 ppb
2015-03-19AC852633.70 ppb
2015-03-19AC852673.60 ppb
2015-05-26AC9331011.0 ppb
2015-05-26AC933081.60 ppb
2015-05-26AC933126.70 ppb
2015-05-26AC93256ND
2015-05-26AC932611.90 ppb
2015-05-26AC93254ND
2015-05-26AC93257ND
2015-08-17AD042617.30 ppb
2015-08-17AD04262ND
2015-08-17AD042653.10 ppb
2015-08-17AD04258ND
2015-09-29AD090099.70 ppb
2015-11-18AD139974.60 ppb
2015-11-18AD1399116.8 ppb
2015-11-18AD139941.60 ppb
2015-11-18AD139954.00 ppb
2015-11-18AD1402711.0 ppb
2016-02-08AD224194.90 ppb
2016-02-08AD22399ND
2016-02-08AD22420ND
2016-02-08AD224181.000 ppb
2016-04-25AD34017ND
2016-04-25AD340196.80 ppb
2016-04-25AD340155.70 ppb
2016-04-25AD3401315.0 ppb
2016-04-25AD340212.90 ppb
2016-04-25AD340236.00 ppb
2016-04-25AD339481.30 ppb
2016-04-25AD33949ND
2016-04-25AD339451.70 ppb
2016-04-25AD339441.20 ppb
2016-07-25AD45414ND
2016-07-25AD45411ND
2016-07-25AD454202.40 ppb
2016-07-25AD454161.50 ppb
2016-11-09AD57440ND
2016-11-09AD573682.50 ppb
2016-11-09AD573672.60 ppb
2016-11-09AD573551.80 ppb
2016-11-09AD573641.20 ppb
2017-01-23AD660928.90 ppb
2017-01-23AD660902.30 ppb
2017-01-23AD660947.40 ppb
2017-01-23AD660316.20 ppb
2017-01-23AD660334.00 ppb
2017-01-23AD660355.00 ppb
2017-01-23AD660325.50 ppb
2017-04-27AD81512ND
2017-04-27AD815147.50 ppb
2017-04-27AD81518ND
2017-04-27AD81516ND
2017-04-27AD815015.60 ppb
2017-04-27AD814981.50 ppb
2017-04-27AD815002.50 ppb
2017-04-27AD815025.60 ppb
2017-08-17AD93386ND
2017-08-17AD93390ND
2017-08-17AD93388ND
2017-08-17AD93389ND
2017-10-27AE023987.40 ppb
2017-10-27AE024056.40 ppb
2017-10-27AE024043.90 ppb
2017-10-27AE024061.80 ppb
2018-02-01AE118892.90 ppb
2018-02-01AE118934.10 ppb
2018-02-01AE118873.60 ppb
2018-02-01AE118813.90 ppb
2018-02-01AE1189513.0 ppb
2018-02-01AE118852.40 ppb
2018-02-01AE118836.50 ppb
2018-02-01AE118263.00 ppb
2018-02-01AE118243.60 ppb
2018-02-01AE118233.70 ppb
2018-02-01AE118253.50 ppb
2018-04-04AE211856.70 ppb
2018-04-04AE211888.90 ppb
2018-04-04AE2118710.1 ppb
2018-04-04AE2119512.7 ppb
2018-08-27AE38746ND
2018-09-24AE412692.90 ppb
2018-09-24AE412712.70 ppb
2018-09-24AE412663.20 ppb
2018-11-09AE457345.10 ppb
2018-11-09AE457353.10 ppb
2018-11-27AE469903.90 ppb
2018-11-27AE469841.90 ppb
2019-02-06AE531866.20 ppb
2019-02-06AE531802.70 ppb
2019-02-06AE531823.10 ppb
2019-02-06AE531843.40 ppb
2019-02-06AE531883.20 ppb
2019-02-06AE531181.000 ppb
2019-02-06AE53117ND
2019-02-06AE53119ND
2019-02-06AE53116ND
2019-06-06AE694204.10 ppb
2019-06-06AE694226.30 ppb
2019-06-06AE694184.90 ppb
2019-06-06AE694195.60 ppb
2019-09-12AE832444.40 ppb
2019-09-12AE8319028.5 ppb
2019-09-12AE8318832.9 ppb
2019-09-12AE8318930.1 ppb
2019-09-12AE8318731.1 ppb
2019-09-30AE851252.90 ppb
2019-12-03AE9098515.7 ppb
2019-12-03AE9098620.9 ppb
2019-12-03AE9098222.0 ppb
2019-12-03AE9098322.8 ppb