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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Callaway 2 Water District

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

 

28

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.495 ppb21ND - 0.990 ppb
2015ND100ND
20160.320 ppb21ND - 0.640 ppb
2017ND20ND
20180.118 ppb102ND - 0.590 ppb
2019ND20ND

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
2014-08-25AC33257ND
2014-08-25AC332560.990 ppb
2015-03-09AC42765ND
2015-03-09AC42766ND
2015-03-09AC42767ND
2015-03-09AC42762ND
2015-03-09AC42764ND
2015-03-09AC42763ND
2015-03-09AC42760ND
2015-03-09AC42761ND
2015-08-18AC57381ND
2015-09-01AC59247ND
2016-07-20AC797610.640 ppb
2016-07-20AC79760ND
2017-08-21AD03377ND
2017-08-21AD03376ND
2018-06-04AD19151ND
2018-06-04AD19152ND
2018-06-04AD19153ND
2018-06-04AD19155ND
2018-06-04AD19154ND
2018-06-04AD19158ND
2018-06-04AD19156ND
2018-06-04AD191570.590 ppb
2018-08-16AD31178ND
2018-08-16AD311790.590 ppb
2019-08-27AD53905ND
2019-08-27AD53906ND