Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromoform

Magnolia Waterworks

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

 

114

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.177 ppb233ND - 1.60 ppb
2015ND190ND
2016ND190ND
2017ND170ND
2018ND170ND
2019ND190ND

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
2014-01-0614008000302ND
2014-01-0614008000102ND
2014-01-0614008000202ND
2014-01-06140080008021.26 ppb
2014-01-06140080004021.60 ppb
2014-04-0114093000802ND
2014-04-0114093001102ND
2014-04-0114093000902ND
2014-04-0114093001002ND
2014-04-0114093001202ND
2014-07-0114184006702ND
2014-07-0114184007202ND
2014-07-0114184006602ND
2014-07-0114184007102ND
2014-07-0114184006802ND
2014-10-0814282007602ND
2014-10-0814282007202ND
2014-10-0814282007702ND
2014-10-08142820073021.20 ppb
2014-10-2714303001802ND
2014-10-2714303002002ND
2014-10-2714303001902ND
2014-10-2714303001602ND
2015-01-0515008010402ND
2015-01-0515008010602ND
2015-01-0515008010302ND
2015-01-0515008010502ND
2015-04-0615099005002ND
2015-04-0615099005102ND
2015-04-0615099004202ND
2015-04-0615099004302ND
2015-05-1915141010602ND
2015-05-1915141010502ND
2015-07-0815190008602ND
2015-07-0815190008102ND
2015-07-0815190008502ND
2015-07-0815190008202ND
2015-08-1115225004801ND
2015-10-0615281000202ND
2015-10-0615281000102ND
2015-10-0615281000402ND
2015-10-0615281000302ND
2016-01-0516007002502ND
2016-01-0516007002402ND
2016-01-0516007002302ND
2016-01-0516007002602ND
2016-04-0516098006702ND
2016-04-0516098006402ND
2016-04-0516098006002ND
2016-04-0516098006502ND
2016-07-0516189006102ND
2016-07-0516189006002ND
2016-07-0516189005802ND
2016-07-0516189006802ND
2016-07-0516189006202ND
2016-07-0516189005502ND
2016-07-0516189006302ND
2016-10-0416280002402ND
2016-10-0416280002002ND
2016-10-0416280002502ND
2016-10-0416280003202ND
2017-01-0317005000902ND
2017-01-0317005000802ND
2017-01-0317005000502ND
2017-01-0317005001502ND
2017-04-0417095004802ND
2017-04-0417095006402ND
2017-04-0417095006102ND
2017-04-0417095004702ND
2017-07-0317187000102ND
2017-07-0317187000802ND
2017-07-0317187001602ND
2017-07-0317187000402ND
2017-07-0317187000702ND
2017-10-0217278000502ND
2017-10-0217278000702ND
2017-10-0217278001102ND
2017-10-0217278000802ND
2018-01-0218004004302ND
2018-01-0218004004702ND
2018-01-0218004004402ND
2018-01-0218004005502ND
2018-04-0318095002102ND
2018-04-0318095002902ND
2018-04-0318095002202ND
2018-04-0318095002002ND
2018-07-0318186007302ND
2018-07-0318186007402ND
2018-07-0318186007209ND
2018-07-0318186009002ND
2018-07-0318186007502ND
2018-10-0118277003002ND
2018-10-0118277002902ND
2018-10-0118277002802ND
2018-10-0118277003702ND
2019-01-0719010007002ND
2019-01-0719010006302ND
2019-01-0719010006202ND
2019-01-0719010006102ND
2019-04-0119094001602ND
2019-04-0119094001002ND
2019-04-0119094001302ND
2019-04-0119094001202ND
2019-07-0819191000802ND
2019-07-0819191001002ND
2019-07-0819191000602ND
2019-07-0819191000402ND
2019-07-0819191000902ND
2019-07-0819191000502ND
2019-07-0819191000702ND
2019-10-0119276000502ND
2019-10-0119276000602ND
2019-10-0119276000802ND
2019-10-0119276000702ND