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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

City of Meridian

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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
20130.238 ppb51ND - 1.19 ppb
20140.233 ppb122ND - 1.57 ppb
2015N/A00N/A
2016ND30ND
2017ND20ND

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
2012-06-06120607-014THND
2013-06-12130613-004THND
2013-11-20131121-008TH1.19 ppb
2013-11-20131121-007THND
2013-11-20131121-006THND
2013-11-20131121-004THND
2014-02-17140218-008THND
2014-02-17140218-007THND
2014-02-17140218-006THND
2014-02-17140218-005THND
2014-05-19140520-007TH1.57 ppb
2014-05-19140520-008THND
2014-05-19140520-006THND
2014-05-19140520-005THND
2014-08-20140821-013THND
2014-08-20140821-005THND
2014-08-20140821-004THND
2014-10-02141003-001TH1.23 ppb
2016-06-28160629-004THND
2016-11-30161201-014THND
2016-11-30161201-013THND
2017-08-01170802-005THND
2017-08-01170802-006THND