Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromoform

El Monte Water Department

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

 

110

Samples

0

Samples exceeding legal limit (MCL)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0611 ppb181ND - 1.10 ppb
20150.253 ppb172ND - 3.10 ppb
20160.0611 ppb181ND - 1.10 ppb
20170.0611 ppb181ND - 1.10 ppb
20180.883 ppb185ND - 5.10 ppb
2019ND210ND

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
2014-01-289588-006-1035ND
2014-01-289588-800-11001.10 ppb
2014-01-289588-801-0945ND
2014-01-289588-802-1025ND
2014-01-289588-803-0935ND
2014-04-249588-800-1055ND
2014-04-249588-801-1045ND
2014-04-249588-802-1025ND
2014-04-249588-803-1040ND
2014-07-289588-009-1030ND
2014-07-289588-800-1125ND
2014-07-289588-801-1010ND
2014-07-289588-802-1100ND
2014-07-289588-803-0955ND
2014-10-289588-800-1140ND
2014-10-289588-801-1125ND
2014-10-289588-802-1105ND
2014-10-289588-803-1115ND
2015-01-139588-006-1015ND
2015-01-299588-800-1050ND
2015-01-299588-801-1035ND
2015-01-299588-802-1105ND
2015-01-299588-803-1020ND
2015-04-289588-800-1050ND
2015-04-289588-801-0930ND
2015-04-289588-802-0950ND
2015-04-289588-803-0940ND
2015-07-289588-800-1105ND
2015-07-289588-801-1055ND
2015-07-289588-802-1025ND
2015-07-289588-803-1040ND
2015-10-299588-800-1050ND
2015-10-299588-801-09501.20 ppb
2015-10-299588-802-1010ND
2015-10-299588-803-09403.10 ppb
2016-01-119588-006-1045ND
2016-01-289588-800-1010ND
2016-01-289588-801-0945ND
2016-01-289588-802-0955ND
2016-01-289588-803-0935ND
2016-04-289588-800-1415ND
2016-04-289588-801-1315ND
2016-04-289588-802-1400ND
2016-04-289588-803-1325ND
2016-07-079588-009-0950ND
2016-07-289588-800-14101.10 ppb
2016-07-289588-801-1340ND
2016-07-289588-802-1355ND
2016-07-289588-803-1330ND
2016-10-319588-800-1335ND
2016-10-319588-801-1305ND
2016-10-319588-802-1325ND
2016-10-319588-803-1315ND
2017-01-309588-006-1350ND
2017-01-309588-800-1355ND
2017-01-309588-801-1310ND
2017-01-309588-802-13401.10 ppb
2017-01-309588-803-1300ND
2017-04-279588-800-1455ND
2017-04-279588-801-1325ND
2017-04-279588-802-1425ND
2017-04-279588-803-1340ND
2017-07-319588-800-1045ND
2017-07-319588-801-1005ND
2017-07-319588-802-1030ND
2017-07-319588-803-1015ND
2017-08-039588-009-0945ND
2017-10-319588-800-1345ND
2017-10-319588-801-1315ND
2017-10-319588-802-1330ND
2017-10-319588-803-1305ND
2018-01-259588-006-1130ND
2018-01-259588-800-1145ND
2018-01-259588-801-0950ND
2018-01-259588-802-1115ND
2018-01-259588-803-1000ND
2018-04-309588-800-1345ND
2018-04-309588-801-13101.30 ppb
2018-04-309588-802-13354.40 ppb
2018-04-309588-803-13205.10 ppb
2018-07-259588-009-13001.60 ppb
2018-07-259588-800-1435ND
2018-07-259588-801-1235ND
2018-07-259588-802-1350ND
2018-07-259588-803-1240ND
2018-10-319588-800-1125ND
2018-10-319588-801-0945ND
2018-10-319588-802-1100ND
2018-10-319588-803-09553.50 ppb
2019-01-319588-006-1050ND
2019-01-319588-800-1100ND
2019-01-319588-801-0915ND
2019-01-319588-802-1040ND
2019-01-319588-803-0925ND
2019-04-259588-800-1335ND
2019-04-259588-801-1240ND
2019-04-259588-802-1315ND
2019-04-259588-803-1230ND
2019-05-289588-043-1310ND
2019-05-289588-044-1240ND
2019-05-289588-045-1255ND
2019-07-259588-009-1430ND
2019-07-259588-800-1550ND
2019-07-259588-801-1335ND
2019-07-259588-802-1520ND
2019-07-259588-803-1330ND
2019-10-309588-800-1435ND
2019-10-309588-801-1320ND
2019-10-309588-802-1415ND
2019-10-309588-803-1310ND