Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Bromoform

Franklin County Rural Water District 6

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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

15

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.29 ppb440.540 ppb - 2.60 ppb
20130.875 ppb42ND - 2.00 ppb
20140.668 ppb43ND - 1.20 ppb
20150.178 ppb41ND - 0.710 ppb
20160.755 ppb43ND - 1.30 ppb
20170.710 ppb32ND - 1.40 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
2012-03-20576655TF2.60 ppb
2012-06-04579755TF0.820 ppb
2012-09-17585554TF0.540 ppb
2012-12-17588885TF1.20 ppb
2013-03-18593632TFND
2013-06-17597415TF2.00 ppb
2013-09-16603209TF1.50 ppb
2013-11-11605487TFND
2014-03-10766830.603 ppb
2014-06-101275471.20 ppb
2014-09-081914930.870 ppb
2014-12-08244683ND
2015-03-09293670ND
2015-06-08346589ND
2015-09-144064700.710 ppb
2015-12-14461870ND
2016-03-075062421.20 ppb
2016-06-135645701.30 ppb
2016-09-126225160.520 ppb
2016-12-13674282ND
2017-03-137241630.730 ppb
2017-06-13778753ND
2017-12-118921321.40 ppb