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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Pomeroy City Of

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.

 

35

Samples

0

Samples exceeding legal limit (MCL)

21

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.710 ppb64ND - 1.56 ppb
20150.716 ppb73ND - 1.77 ppb
20161.11 ppb54ND - 3.37 ppb
20171.18 ppb42ND - 2.51 ppb
20181.27 ppb54ND - 2.89 ppb
20190.336 ppb84ND - 0.810 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 Lab ID Result
2014-06-0298176ND
2014-08-12503241.10 ppb
2014-08-1250322ND
2014-08-12503260.770 ppb
2014-08-12503201.56 ppb
2014-08-12503180.830 ppb
2015-07-0762137ND
2015-07-0762136ND
2015-08-24646681.60 ppb
2015-08-2464666ND
2015-08-2464664ND
2015-08-24646621.64 ppb
2015-08-24646601.77 ppb
2016-08-080.750 ppb
2016-08-08ND
2016-08-083.37 ppb
2016-08-080.770 ppb
2016-08-080.680 ppb
2017-08-15ND
2017-08-152.51 ppb
2017-08-15ND
2017-08-152.22 ppb
2018-08-062.13 ppb
2018-08-06ND
2018-08-060.720 ppb
2018-08-060.620 ppb
2018-08-062.89 ppb
2019-07-08ND
2019-07-08ND
2019-07-08ND
2019-08-260.620 ppb
2019-08-26ND
2019-08-260.560 ppb
2019-08-260.700 ppb
2019-08-260.810 ppb