Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromoform

Lakeside Water

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

 

50

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.150 ppb101ND - 1.50 ppb
2015ND80ND
2016ND80ND
2017ND80ND
2018ND80ND
2019ND80ND

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
2014-01-06140080016021.50 ppb
2014-01-0614008001302ND
2014-05-2814149002702ND
2014-05-2814149003002ND
2014-08-2714240007502ND
2014-08-2714240007402ND
2014-10-0814282008602ND
2014-10-0814282008402ND
2014-10-2714303002102ND
2014-10-2714303001502ND
2015-01-0515008008302ND
2015-01-0515008008402ND
2015-04-0615099005602ND
2015-04-0615099005402ND
2015-07-0815190009302ND
2015-07-0815190009202ND
2015-10-0715281001202ND
2015-10-0715281001102ND
2016-01-0516007003002ND
2016-01-0516007002902ND
2016-04-0616098007702ND
2016-04-0616098007602ND
2016-07-0516189005402ND
2016-07-0516189005902ND
2016-10-0416280001602ND
2016-10-0416280002302ND
2017-01-0317005000102ND
2017-01-0317005000602ND
2017-04-0417095007102ND
2017-04-0417095005102ND
2017-07-0317187002102ND
2017-07-0317187000502ND
2017-10-0217278000602ND
2017-10-0217278000402ND
2018-01-0218004004502ND
2018-01-0218004003902ND
2018-04-0918101004602ND
2018-04-0918101004702ND
2018-07-1018193002002ND
2018-07-1018193002102ND
2018-10-1618291005002ND
2018-10-1618291005102ND
2019-02-0519038004402ND
2019-02-0519038004502ND
2019-04-0119094000702ND
2019-04-0119094001102ND
2019-07-0819191001602ND
2019-07-0819191000302ND
2019-10-0119276000102ND
2019-10-0119276001502ND