Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromoform

Centerville City Water System

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

 

90

Samples

0

Samples exceeding legal limit (MCL)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.129 ppb174ND - 0.600 ppb
20150.114 ppb142ND - 1.000 ppb
20160.157 ppb143ND - 0.900 ppb
20170.0286 ppb211ND - 0.600 ppb
20180.0500 ppb121ND - 0.600 ppb
20190.0583 ppb121ND - 0.700 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 Result
2014-01-06ND
2014-01-060.500 ppb
2014-01-06ND
2014-01-06ND
2014-01-060.500 ppb
2014-01-06ND
2014-01-06ND
2014-04-07ND
2014-04-070.600 ppb
2014-07-07ND
2014-07-07ND
2014-07-07ND
2014-07-07ND
2014-07-070.600 ppb
2014-07-07ND
2014-08-10ND
2014-08-10ND
2015-01-05ND
2015-01-051.000 ppb
2015-04-06ND
2015-04-060.600 ppb
2015-04-10ND
2015-07-06ND
2015-07-06ND
2015-07-21ND
2015-07-21ND
2015-07-22ND
2015-07-22ND
2015-07-22ND
2015-10-05ND
2015-10-05ND
2016-01-11ND
2016-01-11ND
2016-04-04ND
2016-04-04ND
2016-06-15ND
2016-06-15ND
2016-07-05ND
2016-07-050.700 ppb
2016-07-05ND
2016-07-05ND
2016-10-03ND
2016-10-03ND
2016-10-030.600 ppb
2016-10-030.900 ppb
2017-01-09ND
2017-01-09ND
2017-01-09ND
2017-01-09ND
2017-01-10ND
2017-01-10ND
2017-01-10ND
2017-02-22ND
2017-04-03ND
2017-04-03ND
2017-04-03ND
2017-04-03ND
2017-04-03ND
2017-07-06ND
2017-07-060.600 ppb
2017-07-06ND
2017-07-06ND
2017-10-02ND
2017-10-02ND
2017-10-02ND
2017-10-02ND
2018-01-08ND
2018-01-08ND
2018-01-08ND
2018-01-080.600 ppb
2018-04-02ND
2018-04-02ND
2018-04-02ND
2018-04-02ND
2018-07-09ND
2018-07-09ND
2018-07-09ND
2018-07-09ND
2019-01-07ND
2019-01-07ND
2019-01-07ND
2019-01-07ND
2019-04-03ND
2019-04-03ND
2019-04-030.700 ppb
2019-04-03ND
2019-10-15ND
2019-10-15ND
2019-10-15ND
2019-10-15ND