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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Aquarion Water Company of Connecticut - Valley System

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

 

113

Samples

0

Samples exceeding legal limit (MCL)

11

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.211 ppb193ND - 2.00 ppb
20150.0526 ppb191ND - 1.000 ppb
20160.105 ppb192ND - 1.000 ppb
20170.0526 ppb191ND - 1.000 ppb
20180.0556 ppb181ND - 1.000 ppb
20190.158 ppb193ND - 1.000 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
2014-01-08201400348-DBPND
2014-01-08201400349-DBPND
2014-01-08201400351-DBPND
2014-01-08201400355-DBPND
2014-02-06201401778-VOC1ND
2014-02-06201401781-VOC1ND
2014-02-06201401783-VOC1ND
2014-04-02201404401-DBPND
2014-04-02201404402-DBPND
2014-04-02201404404-DBPND
2014-04-02201404408-DBPND
2014-07-09201409403-DBP1.000 ppb
2014-07-09201409404-DBPND
2014-07-09201409406-DBP2.00 ppb
2014-07-09201409410-DBPND
2014-10-08201415160-DBP1.000 ppb
2014-10-08201415161-DBPND
2014-10-08201415165-DBPND
2014-10-08201415169-DBPND
2015-01-07201500404-DBPND
2015-01-07201500395-DBPND
2015-01-07201500400-DBPND
2015-01-07201500396-DBPND
2015-02-05201501690-VOC1ND
2015-02-05201501687-VOC1ND
2015-04-08201504408-DBPND
2015-04-08201504404-DBPND
2015-04-08201504399-DBPND
2015-04-08201504400-DBPND
2015-07-09201508946-DBPND
2015-07-09201508948-DBPND
2015-07-09201508945-DBPND
2015-07-09201508950-DBPND
2015-10-07201514292-DBP1.000 ppb
2015-10-07201514293-DBPND
2015-10-07201514289-DBPND
2015-10-07201514291-DBPND
2015-10-21201515272-VOC1ND
2016-01-05201600123-DBPND
2016-01-05201600127-DBPND
2016-01-05201600124-DBPND
2016-01-05201600125-DBPND
2016-02-03201601674-VOC1ND
2016-02-03201601672-VOC1ND
2016-02-03201601668-VOC1ND
2016-04-06201604309-DBPND
2016-04-06201604313-DBPND
2016-04-06201604310-DBP1.000 ppb
2016-04-06201604311-DBPND
2016-07-07201608574-DBP1.000 ppb
2016-07-07201608575-DBPND
2016-07-07201608573-DBPND
2016-07-07201608576-DBPND
2016-10-05201613504-DBPND
2016-10-05201613507-DBPND
2016-10-05201613505-DBPND
2016-10-05201613506-DBPND
2017-01-03201700123-DBPND
2017-01-03201700127-DBPND
2017-01-03201700124-DBP1.000 ppb
2017-01-03201700125-DBPND
2017-02-08201702259-VOC1ND
2017-02-08201702257-VOC1ND
2017-04-05201704801-DBPND
2017-04-05201704807-DBPND
2017-04-05201704802-DBPND
2017-04-05201704803-DBPND
2017-06-22201709340-VOC1ND
2017-07-06201710050-DBPND
2017-07-06201710053-DBPND
2017-07-06201710051-DBPND
2017-07-06201710052-DBPND
2017-10-03201715538-DBPND
2017-10-03201715542-DBPND
2017-10-03201715539-DBPND
2017-10-03201715540-DBPND
2018-01-03201800253-DBPND
2018-01-03201800257-DBPND
2018-01-03201800254-DBPND
2018-01-03201800255-DBPND
2018-02-06201801688-VOC1ND
2018-04-04201804130-DBPND
2018-04-04201804134-DBPND
2018-04-04201804131-DBPND
2018-04-04201804132-DBPND
2018-04-30201805765-VOC1ND
2018-07-05201809640-DBP1.000 ppb
2018-07-05201809644-DBPND
2018-07-05201809641-DBPND
2018-07-05201809642-DBPND
2018-10-02201815157-DBPND
2018-10-02201815161-DBPND
2018-10-02201815158-DBPND
2018-10-02201815159-DBPND
2019-01-10201900570-DBPND
2019-01-10201900571-DBP1.000 ppb
2019-01-10201900572-DBPND
2019-01-10201900575-DBPND
2019-02-05201901652-VOC1ND
2019-02-05201901650-VOC1ND
2019-04-02201904266-DBPND
2019-04-02201904267-DBPND
2019-04-02201904268-DBPND
2019-04-02201904270-DBPND
2019-07-02201909848-DBPND
2019-07-02201909851-DBPND
2019-07-02201909849-DBP1.000 ppb
2019-07-02201909850-DBPND
2019-10-03201916104-DBPND
2019-10-03201916105-DBP1.000 ppb
2019-10-03201916106-DBPND
2019-10-08201916442-DBPND
2019-12-16201920349-VOC1ND