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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Duxbury Water Department

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

 

144

Samples

0

Samples exceeding legal limit (MCL)

74

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
20150.690 ppb1812ND - 1.32 ppb
20160.622 ppb3014ND - 2.06 ppb
20170.705 ppb3014ND - 1.95 ppb
20180.529 ppb3414ND - 2.26 ppb
20190.881 ppb3220ND - 2.30 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 Result
2015-08-03ND
2015-08-03ND
2015-08-03ND
2015-08-03ND
2015-08-170.810 ppb
2015-08-170.810 ppb
2015-08-171.18 ppb
2015-08-171.18 ppb
2015-08-17ND
2015-08-17ND
2015-08-170.800 ppb
2015-08-170.800 ppb
2015-08-171.17 ppb
2015-08-171.17 ppb
2015-08-170.930 ppb
2015-08-170.930 ppb
2015-08-171.32 ppb
2015-08-171.32 ppb
2016-02-24ND
2016-02-24ND
2016-02-24ND
2016-02-24ND
2016-02-24ND
2016-02-24ND
2016-02-24ND
2016-02-24ND
2016-02-24ND
2016-02-24ND
2016-02-24ND
2016-02-24ND
2016-08-022.06 ppb
2016-08-022.06 ppb
2016-08-021.61 ppb
2016-08-021.61 ppb
2016-08-02ND
2016-08-02ND
2016-08-021.17 ppb
2016-08-021.17 ppb
2016-08-021.000 ppb
2016-08-021.000 ppb
2016-08-020.970 ppb
2016-08-020.970 ppb
2016-08-021.95 ppb
2016-08-021.95 ppb
2016-08-09ND
2016-08-09ND
2016-08-090.570 ppb
2016-08-090.570 ppb
2017-02-28ND
2017-02-28ND
2017-02-28ND
2017-02-28ND
2017-02-28ND
2017-02-28ND
2017-02-28ND
2017-02-28ND
2017-02-28ND
2017-02-28ND
2017-02-28ND
2017-02-28ND
2017-08-151.78 ppb
2017-08-151.78 ppb
2017-08-151.57 ppb
2017-08-151.57 ppb
2017-08-150.660 ppb
2017-08-150.660 ppb
2017-08-151.84 ppb
2017-08-151.84 ppb
2017-08-151.95 ppb
2017-08-151.95 ppb
2017-08-150.990 ppb
2017-08-150.990 ppb
2017-08-151.78 ppb
2017-08-151.78 ppb
2017-08-16ND
2017-08-16ND
2017-08-16ND
2017-08-16ND
2018-03-20ND
2018-03-20ND
2018-03-20ND
2018-03-20ND
2018-03-20ND
2018-03-20ND
2018-03-20ND
2018-03-20ND
2018-03-20ND
2018-03-20ND
2018-03-20ND
2018-03-20ND
2018-03-26ND
2018-03-26ND
2018-03-26ND
2018-03-26ND
2018-08-070.570 ppb
2018-08-070.570 ppb
2018-08-070.540 ppb
2018-08-070.540 ppb
2018-08-08ND
2018-08-08ND
2018-08-081.52 ppb
2018-08-081.52 ppb
2018-08-08ND
2018-08-08ND
2018-08-080.860 ppb
2018-08-080.860 ppb
2018-08-082.26 ppb
2018-08-082.26 ppb
2018-08-081.57 ppb
2018-08-081.57 ppb
2018-08-081.68 ppb
2018-08-081.68 ppb
2019-02-26ND
2019-02-26ND
2019-02-26ND
2019-02-26ND
2019-03-061.80 ppb
2019-03-061.80 ppb
2019-03-062.01 ppb
2019-03-062.01 ppb
2019-03-06ND
2019-03-06ND
2019-03-071.99 ppb
2019-03-071.99 ppb
2019-08-211.58 ppb
2019-08-211.58 ppb
2019-08-210.930 ppb
2019-08-210.930 ppb
2019-08-21ND
2019-08-21ND
2019-08-210.670 ppb
2019-08-210.670 ppb
2019-08-212.30 ppb
2019-08-212.30 ppb
2019-08-211.23 ppb
2019-08-211.23 ppb
2019-08-21ND
2019-08-21ND
2019-08-210.530 ppb
2019-08-210.530 ppb
2019-08-21ND
2019-08-21ND
2019-08-211.05 ppb
2019-08-211.05 ppb