Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Bromoform

Plymouth 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.

 

98

Samples

0

Samples exceeding legal limit (MCL)

46

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.783 ppb660.540 ppb - 0.990 ppb
20133.68 ppb223.68 ppb
20140.935 ppb440.780 ppb - 1.09 ppb
20151.24 ppb2812ND - 11.2 ppb
20161.09 ppb2810ND - 8.82 ppb
20171.28 ppb3012ND - 13.7 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
2012-01-050.540 ppb
2012-01-050.540 ppb
2012-04-240.990 ppb
2012-04-240.990 ppb
2012-10-090.820 ppb
2012-10-090.820 ppb
2013-10-233.68 ppb
2013-10-233.68 ppb
2014-11-241.09 ppb
2014-11-241.09 ppb
2014-11-240.780 ppb
2014-11-240.780 ppb
2015-08-192.06 ppb
2015-08-192.06 ppb
2015-08-1911.2 ppb
2015-08-1911.2 ppb
2015-08-191.39 ppb
2015-08-191.39 ppb
2015-08-190.660 ppb
2015-08-190.660 ppb
2015-11-24ND
2015-11-24ND
2015-11-24ND
2015-11-24ND
2015-11-24ND
2015-11-24ND
2015-11-24ND
2015-11-24ND
2015-11-24ND
2015-11-24ND
2015-11-241.000 ppb
2015-11-241.000 ppb
2015-11-24ND
2015-11-24ND
2015-11-241.06 ppb
2015-11-241.06 ppb
2015-11-24ND
2015-11-24ND
2015-12-14ND
2015-12-14ND
2016-08-178.82 ppb
2016-08-178.82 ppb
2016-08-173.08 ppb
2016-08-173.08 ppb
2016-08-171.72 ppb
2016-08-171.72 ppb
2016-08-171.06 ppb
2016-08-171.06 ppb
2016-10-05ND
2016-10-05ND
2016-10-050.570 ppb
2016-10-050.570 ppb
2016-10-05ND
2016-10-05ND
2016-10-05ND
2016-10-05ND
2016-10-05ND
2016-10-05ND
2016-10-05ND
2016-10-05ND
2016-10-05ND
2016-10-05ND
2016-10-05ND
2016-10-05ND
2016-10-05ND
2016-10-05ND
2016-11-21ND
2016-11-21ND
2017-01-24ND
2017-01-24ND
2017-08-161.30 ppb
2017-08-1613.7 ppb
2017-08-160.820 ppb
2017-08-162.24 ppb
2017-08-160.820 ppb
2017-08-162.24 ppb
2017-08-1613.7 ppb
2017-08-161.30 ppb
2017-12-07ND
2017-12-070.560 ppb
2017-12-070.560 ppb
2017-12-070.540 ppb
2017-12-070.540 ppb
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-07ND