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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Connecticut Water Company - Shoreline Region-chester 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

 

60

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND100ND
2015ND100ND
20160.0690 ppb101ND - 0.690 ppb
2017ND100ND
2018ND100ND
2019ND100ND

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
2014-01-29140130CWCAVOC1ND
2014-03-213486THMND
2014-03-213487THMND
2014-05-146604VOC1ND
2014-06-188762THMND
2014-06-188763THMND
2014-09-15BH14105TTHMND
2014-09-15BH14106TTHMND
2014-12-17BH54712TTHMND
2014-12-17BH54713TTHMND
2015-02-12BH73176VOC1ND
2015-03-11BH82213TTHMND
2015-03-11BH82214TTHMND
2015-06-16BJ31719TTHMND
2015-06-16BJ31720TTHMND
2015-06-17BJ32481VOC1ND
2015-09-15BJ92117TTHMND
2015-09-15BJ92118TTHMND
2015-12-08BK34308TTHMND
2015-12-08BK34307TTHMND
2016-02-11BK64356VOC1ND
2016-03-15BK78694TTHMND
2016-03-15BK78695TTHMND
2016-05-25BN40398VOC10.690 ppb
2016-06-14BN54614TTHMND
2016-06-14BN54615TTHMND
2016-09-14BV14926TTHMND
2016-09-14BV14927TTHMND
2016-12-15BX06132TTHMND
2016-12-15BX06133TTHMND
2017-01-18BX33133VOC1ND
2017-03-17BX89075TTHMND
2017-03-17BX89074TTHMND
2017-06-19BY42244TTHMND
2017-06-19BY42245TTHMND
2017-09-14BZ02391TTHMND
2017-09-14BZ02392TTHMND
2017-11-15BZ42288VOC1ND
2017-12-14BZ60235TTHMND
2017-12-14BZ60236TTHMND
2018-03-15CA03070TTHMND
2018-03-15CA03071TTHMND
2018-03-30CA11467VOC1ND
2018-06-26CA80049TTHMND
2018-06-26CA80050TTHMND
2018-09-13VOC1 200505277ND
2018-09-24DBP 200506696ND
2018-09-24DBP 200506698ND
2018-12-21DBP 200516791ND
2018-12-21DBP 200516862ND
2019-03-11VOC1 200524295ND
2019-03-12DBP 200524348ND
2019-03-12DBP 200524349ND
2019-06-14DBP 200536666ND
2019-06-14DBP 200536671ND
2019-06-24VOC1 200538201ND
2019-09-17DBP 200549482ND
2019-09-17DBP 200549483ND
2019-12-10DBP 200559640ND
2019-12-10DBP 200559641ND