EWG's Tap Water Database — 2019 UPDATE


Monobromoacetic acid

Franklin County Rural Water District 6

Monobromoacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.





Samples exceeding legal limit (MCL)


Samples exceeding
health guidelines

Testing results - average by year

YearAverage resultSamples takenDetectionsRange of results
20121.28 ppb43ND - 2.20 ppb
20131.27 ppb440.690 ppb - 2.40 ppb
20146.11 ppb440.730 ppb - 21.0 ppb
20150.960 ppb43ND - 1.70 ppb
20160.740 ppb43ND - 1.20 ppb
20170.707 ppb32ND - 1.40 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 25 ppb

The EWG Health Guideline of 25 ppb for monobromoacetic acid was proposed in 2020 by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk.. This health guideline protects against muscular degeneration.

ppb = parts per billion

All test results

Date Lab ID Result
2012-03-20576655DF1.40 ppb
2012-06-04579755DF2.20 ppb
2012-12-17588885DF1.50 ppb
2013-03-18593632DF0.690 ppb
2013-06-17597415DF1.10 ppb
2013-09-16603209DF2.40 ppb
2013-11-11605486DF0.870 ppb
2014-03-10766841.20 ppb
2014-06-101275481.50 ppb
2014-09-0819149421.0 ppb
2014-12-082446810.730 ppb
2015-03-092936690.740 ppb
2015-06-073465881.40 ppb
2015-09-144064441.70 ppb
2016-03-075062431.10 ppb
2016-06-135645691.20 ppb
2016-12-136742830.660 ppb
2017-03-137241641.40 ppb
2017-06-137787540.720 ppb