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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Clear Brook City MUD

Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform 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)

29

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20143.31 ppb189ND - 28.1 ppb
20153.25 ppb199ND - 17.6 ppb
20161.64 ppb193ND - 26.0 ppb
20172.46 ppb196ND - 19.0 ppb
2018ND180ND
20191.23 ppb192ND - 17.0 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform 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
2014-01-31AC41030ND
2014-02-27AC45024ND
2014-02-27AC45022ND
2014-02-27AC450371.10 ppb
2014-02-27AC450212.30 ppb
2014-05-21AC54956ND
2014-05-21AC54940ND
2014-05-21AC54941ND
2014-05-21AC54975ND
2014-05-21AC548800.700 ppb
2014-09-29AC6848410.8 ppb
2014-09-29AC6846328.1 ppb
2014-09-29AC6846210.8 ppb
2014-09-29AC684812.90 ppb
2014-11-20AC726451.30 ppb
2014-11-20AC72646ND
2014-11-20AC726481.50 ppb
2014-11-20AC72677ND
2015-02-18AC809962.70 ppb
2015-02-18AC8099411.0 ppb
2015-02-18AC80976ND
2015-02-18AC809338.70 ppb
2015-02-18AC80911ND
2015-02-18AC809351.000 ppb
2015-02-18AC809122.60 ppb
2015-05-20AC9276517.6 ppb
2015-05-20AC92766ND
2015-05-20AC92764ND
2015-05-20AC927678.60 ppb
2015-07-17AD00128ND
2015-07-17AD00126ND
2015-07-17AD00137ND
2015-07-17AD000875.40 ppb
2015-11-20AD14402ND
2015-11-20AD14401ND
2015-11-20AD14418ND
2015-11-20AD144104.20 ppb
2016-01-22AD19723ND
2016-01-22AD19651ND
2016-01-22AD19655ND
2016-01-22AD19620ND
2016-01-22AD19624ND
2016-04-06AD320973.10 ppb
2016-04-06AD3210926.0 ppb
2016-04-06AD32035ND
2016-04-06AD32018ND
2016-04-06AD32032ND
2016-04-06AD320422.10 ppb
2016-07-11AD43518ND
2016-07-11AD43557ND
2016-07-11AD43520ND
2016-07-11AD43554ND
2016-10-28AD55274ND
2016-10-28AD55275ND
2016-10-28AD55276ND
2016-10-28AD55277ND
2017-01-06AD635911.30 ppb
2017-01-06AD63529ND
2017-01-06AD63528ND
2017-01-06AD63531ND
2017-01-06AD635333.10 ppb
2017-04-10AD789806.50 ppb
2017-04-10AD7897219.0 ppb
2017-04-10AD78935ND
2017-04-10AD78937ND
2017-04-10AD78938ND
2017-04-10AD789361.40 ppb
2017-07-14AD89435ND
2017-07-14AD89438ND
2017-07-14AD89437ND
2017-07-14AD89439ND
2017-10-17AE01061ND
2017-10-17AE01062ND
2017-10-17AE01063ND
2017-10-17AE0107215.4 ppb
2018-02-23AE15485ND
2018-02-23AE15352ND
2018-02-23AE15351ND
2018-02-23AE15350ND
2018-02-23AE15349ND
2018-05-24AE27720ND
2018-05-24AE27659ND
2018-05-24AE27658ND
2018-05-24AE27657ND
2018-05-24AE27690ND
2018-08-09AE36277ND
2018-08-09AE36286ND
2018-08-09AE36265ND
2018-08-09AE36299ND
2018-11-13AE45906ND
2018-11-13AE45911ND
2018-11-13AE45910ND
2018-11-13AE45908ND
2019-01-29AE51971ND
2019-01-29AE51975ND
2019-01-29AE51877ND
2019-01-29AE51885ND
2019-01-29AE51878ND
2019-01-29AE51879ND
2019-04-04AE61199ND
2019-04-04AE61197ND
2019-04-04AE61193ND
2019-04-04AE61200ND
2019-07-18AE74999ND
2019-07-18AE74978ND
2019-07-18AE75014ND
2019-07-18AE75013ND
2019-10-17AE8688817.0 ppb
2019-10-17AE86890ND
2019-10-17AE86889ND
2019-10-17AE86891ND
2019-11-19AE897876.30 ppb