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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

City of Mount Airy

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND160ND
2016ND160ND
2017ND160ND
2018ND160ND
2019ND160ND

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
2014-02-2037729_14-05068ND
2014-02-2037729_14-05069ND
2014-02-2037729_14-05070ND
2014-02-2037729_14-05067ND
2014-05-2937729_14-15144ND
2014-05-2937729_14-15145ND
2014-05-2937729_14-15146ND
2014-05-2937729_14-15147ND
2014-08-2137729_14-25462ND
2014-08-2137729_14-25463ND
2014-08-2137729_14-25464ND
2014-08-2137729_14-25465ND
2014-11-2037729_14-35480ND
2014-11-2037729_14-35481ND
2014-11-2037729_14-35479ND
2014-11-2037729_14-35478ND
2015-02-25ND
2015-02-25ND
2015-02-25ND
2015-02-25ND
2015-05-21ND
2015-05-21ND
2015-05-21ND
2015-05-21ND
2015-08-20ND
2015-08-20ND
2015-08-20ND
2015-08-20ND
2015-11-19ND
2015-11-19ND
2015-11-19ND
2015-11-19ND
2016-02-1837729_16-05304ND
2016-02-1837729_16-05305ND
2016-02-1837729_16-05306ND
2016-02-1837729_16-05307ND
2016-05-1937729_16-15869ND
2016-05-1937729_16-15868ND
2016-05-1937729_16-15864ND
2016-05-1937729_16-15860ND
2016-08-1837729_16-28547ND
2016-08-1837729_16-28550ND
2016-08-1837729_16-28552ND
2016-08-1837729_16-28553ND
2016-11-1837729_16-40609ND
2016-11-1837729_16-40610ND
2016-11-1837729_16-40611ND
2016-11-1837729_16-40612ND
2017-02-2337729_17-06330ND
2017-02-2337729_17-06333ND
2017-02-2337729_17-06331ND
2017-02-2337729_17-06332ND
2017-05-1837729_17-16615ND
2017-05-1837729_17-16616ND
2017-05-1837729_17-16617ND
2017-05-1837729_17-16618ND
2017-08-2437729_17-30588ND
2017-08-2437729_17-30587ND
2017-08-2437729_17-30586ND
2017-08-2437729_17-30585ND
2017-11-1637729_17-43435ND
2017-11-1637729_17-43436ND
2017-11-1637729_17-43437ND
2017-11-1637729_17-43438ND
2018-02-2237729_18-07232 ND
2018-02-2237729_18-07231 ND
2018-02-2237729_18-07230 ND
2018-02-2237729_18-07229 ND
2018-05-2437729_18-20625 ND
2018-05-2437729_18-20622 ND
2018-05-2437729_18-20623 ND
2018-05-2437729_18-20624 ND
2018-08-2337729_18-35310 ND
2018-08-2337729_18-35309 ND
2018-08-2337729_18-35308 ND
2018-08-2337729_18-35306 ND
2018-11-1537729_18-48163 ND
2018-11-1537729_18-48164 ND
2018-11-1537729_18-48165 ND
2018-11-1537729_18-48166 ND
2019-02-2137729_19-07549 ND
2019-02-2137729_19-07550 ND
2019-02-2137729_19-07551 ND
2019-02-2137729_19-07552 ND
2019-05-2337729_19-21135 ND
2019-05-2337729_19-21138 ND
2019-05-2337729_19-21137 ND
2019-05-2337729_19-21136 ND
2019-08-2237729_19-36236 ND
2019-08-2237729_19-36238 ND
2019-08-2237729_19-36237 ND
2019-08-2237729_19-36235 ND
2019-11-2137729_19-50089 ND
2019-11-2137729_19-50088 ND
2019-11-2137729_19-50087 ND
2019-11-2137729_19-50086 ND