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EWG's Tap Water Database — 2021 UPDATE

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Monobromoacetic acid

Lyon County Rural Water District 2

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.

MORE ABOUT THIS CONTAMINANT

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND40ND
2015ND40ND
2016ND40ND
20170.315 ppb42ND - 0.730 ppb
2018ND40ND
2019ND40ND

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
2014-02-1763387ND
2014-06-24137491ND
2014-07-15151384ND
2014-10-13212541ND
2015-01-20264445ND
2015-04-21316680ND
2015-07-28374625ND
2015-10-27418866ND
2016-01-19478104ND
2016-04-19530636ND
2016-07-19586020ND
2016-10-18644960ND
2017-01-17678944ND
2017-04-187440020.530 ppb
2017-08-078141100.730 ppb
2017-10-17862882ND
2018-02-20906782ND
2018-04-17937427ND
2018-07-241011486ND
2018-11-131076981ND
2019-01-151106228ND
2019-04-081137868ND
2019-08-121222171ND
2019-10-281265287ND