Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromoform

Berkeley County PSD/Opequon

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

 

102

Samples

0

Samples exceeding legal limit (MCL)

41

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.17 ppb169ND - 3.67 ppb
20152.24 ppb179ND - 12.6 ppb
20160.894 ppb169ND - 2.40 ppb
20171.07 ppb168ND - 3.50 ppb
20180.139 ppb181ND - 2.50 ppb
20190.321 ppb195ND - 1.30 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
2014-02-19S2THM_214051231.16 ppb
2014-02-19S2THM_21405124ND
2014-02-19S2THM_214051252.29 ppb
2014-02-19S2THM_214051261.90 ppb
2014-05-06S2THM_21412709ND
2014-05-06S2THM_21412710ND
2014-05-06S2THM_21412711ND
2014-05-06S2THM_21412712ND
2014-08-06S2THM_214219522.00 ppb
2014-08-06S2THM_214219532.34 ppb
2014-08-06S2THM_214219542.07 ppb
2014-08-06S2THM_214219553.67 ppb
2014-11-19S2THM_214324081.96 ppb
2014-11-19S2THM_214324091.31 ppb
2014-11-19S2THM_21432410ND
2014-11-19S2THM_21432411ND
2015-02-04S2THM_21503618ND
2015-02-04S2THM_21503619ND
2015-02-04S2THM_21503620ND
2015-02-04S2THM_215036211.40 ppb
2015-02-04S2THM_21503622ND
2015-05-13S2THM_21513406ND
2015-05-13S2THM_21513407ND
2015-05-13S2THM_21513408ND
2015-05-13S2THM_21513409ND
2015-08-19S2THM_215232213.36 ppb
2015-08-19S2THM_215232225.78 ppb
2015-08-19S2THM_215232235.09 ppb
2015-08-19S2THM_215232244.41 ppb
2015-11-23215328101.53 ppb
2015-11-23215328112.60 ppb
2015-11-232153281212.6 ppb
2015-11-23215328131.37 ppb
2016-02-2321605512ND
2016-02-23216055131.10 ppb
2016-02-2321605514ND
2016-02-23216055151.60 ppb
2016-05-1021613225ND
2016-05-1021613226ND
2016-05-1021613227ND
2016-05-1021613228ND
2016-08-15216229-120.800 ppb
2016-08-15216229-131.000 ppb
2016-08-15216229-14ND
2016-08-15216229-150.900 ppb
2016-11-07216313-122.10 ppb
2016-11-07216313-132.10 ppb
2016-11-07216313-152.40 ppb
2016-11-07218313-142.30 ppb
2017-02-14217046-08ND
2017-02-14217046-09ND
2017-02-14217046-10ND
2017-02-14217046-11ND
2017-05-18217139-08ND
2017-05-18217139-09ND
2017-05-18217139-102.00 ppb
2017-05-18217139-11ND
2017-08-09217222-083.50 ppb
2017-08-09217222-092.20 ppb
2017-08-09217222-101.40 ppb
2017-08-09217222-112.00 ppb
2017-11-27217332-081.90 ppb
2017-11-27217332-092.80 ppb
2017-11-27217332-10ND
2017-11-27217332-111.30 ppb
2018-02-14218046-25ND
2018-02-14218046-262.50 ppb
2018-02-14218046-27ND
2018-02-14218046-28ND
2018-05-14218046-26AND
2018-05-24218046-25AND
2018-05-24218046-27AND
2018-05-24218046-28AND
2018-05-24218046-29ND
2018-08-16218229-08ND
2018-08-16218229-09ND
2018-08-16218229-10ND
2018-08-16218229-11ND
2018-08-16218229-12ND
2018-11-27218332-08ND
2018-11-27218332-09ND
2018-11-27218332-10ND
2018-11-27218332-11ND
2019-02-25219057-08ND
2019-02-25219057-09ND
2019-02-25219057-10ND
2019-02-25219057-11ND
2019-05-16219137-08ND
2019-05-16219137-09ND
2019-05-16219137-10ND
2019-05-16219137-11ND
2019-05-16219137-12ND
2019-08-07219220-081.30 ppb
2019-08-07219220-09ND
2019-08-07219220-10ND
2019-08-07219220-111.29 ppb
2019-08-07219220-12ND
2019-11-21219326-081.05 ppb
2019-11-21219326-09ND
2019-11-21219326-101.20 ppb
2019-11-21219326-11ND
2019-11-21219326-121.26 ppb