Bromodichloromethane
Aquarion Water Company of Connecticut - Greenwich System
Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | 11.4 ppb | 34 | 34 | 4.30 ppb - 16.0 ppb |
2015 | 10.3 ppb | 34 | 34 | 4.20 ppb - 15.0 ppb |
2016 | 12.0 ppb | 34 | 34 | 6.30 ppb - 18.0 ppb |
2017 | 14.8 ppb | 34 | 34 | 4.30 ppb - 21.0 ppb |
2018 | 14.5 ppb | 33 | 33 | 6.00 ppb - 22.0 ppb |
2019 | 15.0 ppb | 34 | 34 | 4.60 ppb - 21.0 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.06 ppb
The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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 |
---|---|---|
2014-02-04 | 201401695-DBP | 8.00 ppb |
2014-02-04 | 201401696-DBP | 12.0 ppb |
2014-02-04 | 201401697-DBP | 12.0 ppb |
2014-02-04 | 201401698-DBP | 8.00 ppb |
2014-02-04 | 201401699-DBP | 10.00 ppb |
2014-02-04 | 201401700-DBP | 11.0 ppb |
2014-02-04 | 201401701-DBP | 11.0 ppb |
2014-02-04 | 201401702-DBP | 9.00 ppb |
2014-04-01 | 201404200-VOC1 | 8.00 ppb |
2014-04-01 | 201404209-VOC1 | 4.30 ppb |
2014-05-07 | 201406277-DBP | 11.0 ppb |
2014-05-07 | 201406278-DBP | 12.0 ppb |
2014-05-07 | 201406283-DBP | 10.00 ppb |
2014-05-07 | 201406284-DBP | 10.00 ppb |
2014-05-07 | 201406285-DBP | 11.0 ppb |
2014-05-07 | 201406286-DBP | 10.00 ppb |
2014-05-07 | 201406288-DBP | 11.0 ppb |
2014-05-07 | 201406289-DBP | 12.0 ppb |
2014-08-05 | 201411084-DBP | 16.0 ppb |
2014-08-05 | 201411087-DBP | 15.0 ppb |
2014-08-05 | 201411088-DBP | 16.0 ppb |
2014-08-05 | 201411089-DBP | 14.0 ppb |
2014-08-05 | 201411090-DBP | 15.0 ppb |
2014-08-05 | 201411091-DBP | 13.0 ppb |
2014-08-05 | 201411092-DBP | 13.0 ppb |
2014-08-05 | 201411093-DBP | 14.0 ppb |
2014-11-03 | 201416665-DBP | 11.0 ppb |
2014-11-03 | 201416666-DBP | 14.0 ppb |
2014-11-03 | 201416667-DBP | 13.0 ppb |
2014-11-03 | 201416668-DBP | 11.0 ppb |
2014-11-03 | 201416669-DBP | 10.00 ppb |
2014-11-03 | 201416670-DBP | 9.00 ppb |
2014-11-03 | 201416671-DBP | 14.0 ppb |
2014-11-03 | 201416672-DBP | 10.00 ppb |
2015-02-04 | 201501590-DBP | 8.00 ppb |
2015-02-04 | 201501592-DBP | 7.00 ppb |
2015-02-04 | 201501591-DBP | 7.00 ppb |
2015-02-04 | 201501594-DBP | 8.00 ppb |
2015-02-04 | 201501588-DBP | 7.00 ppb |
2015-02-04 | 201501593-DBP | 10.00 ppb |
2015-02-04 | 201501587-DBP | 7.00 ppb |
2015-02-04 | 201501589-DBP | 8.00 ppb |
2015-04-07 | 201504250-VOC1 | 4.80 ppb |
2015-04-07 | 201504259-VOC1 | 4.20 ppb |
2015-05-06 | 201505707-DBP | 12.0 ppb |
2015-05-06 | 201505709-DBP | 12.0 ppb |
2015-05-06 | 201505705-DBP | 11.0 ppb |
2015-05-06 | 201505708-DBP | 11.0 ppb |
2015-05-06 | 201505711-DBP | 12.0 ppb |
2015-05-06 | 201505706-DBP | 10.00 ppb |
2015-05-06 | 201505710-DBP | 11.0 ppb |
2015-05-06 | 201505712-DBP | 10.00 ppb |
2015-08-04 | 201510522-DBP | 11.0 ppb |
2015-08-04 | 201510529-DBP | 12.0 ppb |
2015-08-04 | 201510524-DBP | 12.0 ppb |
2015-08-04 | 201510520-DBP | 11.0 ppb |
2015-08-04 | 201510525-DBP | 13.0 ppb |
2015-08-04 | 201510526-DBP | 13.0 ppb |
2015-08-04 | 201510527-DBP | 11.0 ppb |
2015-08-04 | 201510521-DBP | 13.0 ppb |
2015-11-02 | 201515638-DBP | 11.0 ppb |
2015-11-02 | 201515643-DBP | 11.0 ppb |
2015-11-02 | 201515636-DBP | 11.0 ppb |
2015-11-02 | 201515635-DBP | 13.0 ppb |
2015-11-02 | 201515641-DBP | 11.0 ppb |
2015-11-02 | 201515639-DBP | 11.0 ppb |
2015-11-02 | 201515637-DBP | 15.0 ppb |
2015-11-02 | 201515642-DBP | 10.00 ppb |
2016-02-02 | 201601506-DBP | 8.00 ppb |
2016-02-02 | 201601508-DBP | 8.00 ppb |
2016-02-02 | 201601509-DBP | 7.00 ppb |
2016-02-02 | 201601505-DBP | 8.00 ppb |
2016-02-02 | 201601503-DBP | 8.00 ppb |
2016-02-02 | 201601502-DBP | 8.00 ppb |
2016-02-02 | 201601510-DBP | 8.00 ppb |
2016-02-02 | 201601504-DBP | 7.00 ppb |
2016-05-04 | 201605654-DBP | 11.0 ppb |
2016-05-04 | 201605655-DBP | 13.0 ppb |
2016-05-04 | 201605649-DBP | 14.0 ppb |
2016-05-04 | 201605647-DBP | 14.0 ppb |
2016-05-04 | 201605652-DBP | 14.0 ppb |
2016-05-04 | 201605651-DBP | 11.0 ppb |
2016-05-04 | 201605648-DBP | 15.0 ppb |
2016-05-04 | 201605650-DBP | 10.00 ppb |
2016-06-07 | 201607107-VOC1 | 10.5 ppb |
2016-06-07 | 201607117-VOC1 | 6.30 ppb |
2016-08-02 | 201609978-DBP | 12.0 ppb |
2016-08-02 | 201609975-DBP | 17.0 ppb |
2016-08-02 | 201609979-DBP | 16.0 ppb |
2016-08-02 | 201609980-DBP | 18.0 ppb |
2016-08-02 | 201609981-DBP | 15.0 ppb |
2016-08-02 | 201609976-DBP | 17.0 ppb |
2016-08-02 | 201609974-DBP | 13.0 ppb |
2016-08-03 | 201610150-DBP | 14.0 ppb |
2016-11-01 | 201615242-DBP | 16.0 ppb |
2016-11-01 | 201615250-DBP | 13.0 ppb |
2016-11-01 | 201615244-DBP | 13.0 ppb |
2016-11-01 | 201615246-DBP | 9.00 ppb |
2016-11-01 | 201615251-DBP | 17.0 ppb |
2016-11-01 | 201615243-DBP | 15.0 ppb |
2016-11-01 | 201615247-DBP | 10.00 ppb |
2016-11-01 | 201615249-DBP | 13.0 ppb |
2017-02-06 | 201701945-DBP | 14.0 ppb |
2017-02-06 | 201701943-DBP | 14.0 ppb |
2017-02-06 | 201701942-DBP | 9.00 ppb |
2017-02-06 | 201701950-DBP | 11.0 ppb |
2017-02-06 | 201701949-DBP | 8.00 ppb |
2017-02-06 | 201701944-DBP | 10.00 ppb |
2017-02-06 | 201701948-DBP | 12.0 ppb |
2017-02-06 | 201701946-DBP | 14.0 ppb |
2017-04-03 | 201704556-VOC1 | 11.2 ppb |
2017-04-03 | 201704567-VOC1 | 4.30 ppb |
2017-05-01 | 201706217-DBP | 16.0 ppb |
2017-05-01 | 201706221-DBP | 21.0 ppb |
2017-05-01 | 201706214-DBP | 19.0 ppb |
2017-05-01 | 201706218-DBP | 20.0 ppb |
2017-05-01 | 201706219-DBP | 18.0 ppb |
2017-05-01 | 201706215-DBP | 18.0 ppb |
2017-05-01 | 201706220-DBP | 19.0 ppb |
2017-05-01 | 201706213-DBP | 16.0 ppb |
2017-08-07 | 201712148-DBP | 18.0 ppb |
2017-08-07 | 201712149-DBP | 15.0 ppb |
2017-08-07 | 201712151-DBP | 18.0 ppb |
2017-08-07 | 201712144-DBP | 18.0 ppb |
2017-08-07 | 201712147-DBP | 11.0 ppb |
2017-08-07 | 201712143-DBP | 18.0 ppb |
2017-08-07 | 201712150-DBP | 17.0 ppb |
2017-08-07 | 201712145-DBP | 18.0 ppb |
2017-11-06 | 201717432-DBP | 10.00 ppb |
2017-11-06 | 201717428-DBP | 19.0 ppb |
2017-11-06 | 201717425-DBP | 17.0 ppb |
2017-11-06 | 201717426-DBP | 18.0 ppb |
2017-11-06 | 201717431-DBP | 11.0 ppb |
2017-11-06 | 201717430-DBP | 12.0 ppb |
2017-11-06 | 201717429-DBP | 14.0 ppb |
2017-11-16 | 201718132-DBP | 16.0 ppb |
2018-02-06 | 201801639-DBP | 12.0 ppb |
2018-02-06 | 201801636-DBP | 11.0 ppb |
2018-02-06 | 201801640-DBP | 9.00 ppb |
2018-02-06 | 201801638-DBP | 10.00 ppb |
2018-02-06 | 201801637-DBP | 12.0 ppb |
2018-02-06 | 201801642-DBP | 7.00 ppb |
2018-02-06 | 201801641-DBP | 9.00 ppb |
2018-02-06 | 201801643-DBP | 6.00 ppb |
2018-04-02 | 201803873-VOC1 | 9.40 ppb |
2018-05-15 | 201806760-DBP | 16.0 ppb |
2018-05-15 | 201806754-DBP | 16.0 ppb |
2018-05-15 | 201806757-DBP | 15.0 ppb |
2018-05-15 | 201806758-DBP | 14.0 ppb |
2018-05-15 | 201806755-DBP | 16.0 ppb |
2018-05-15 | 201806756-DBP | 13.0 ppb |
2018-05-15 | 201806753-DBP | 12.0 ppb |
2018-05-15 | 201806759-DBP | 14.0 ppb |
2018-08-07 | 201811788-DBP | 16.0 ppb |
2018-08-07 | 201811782-DBP | 18.0 ppb |
2018-08-07 | 201811785-DBP | 13.0 ppb |
2018-08-07 | 201811786-DBP | 17.0 ppb |
2018-08-07 | 201811784-DBP | 18.0 ppb |
2018-08-07 | 201811783-DBP | 18.0 ppb |
2018-08-07 | 201811781-DBP | 22.0 ppb |
2018-08-07 | 201811787-DBP | 13.0 ppb |
2018-11-05 | 201817092-DBP | 19.0 ppb |
2018-11-05 | 201817098-DBP | 18.0 ppb |
2018-11-05 | 201817094-DBP | 21.0 ppb |
2018-11-05 | 201817095-DBP | 13.0 ppb |
2018-11-05 | 201817099-DBP | 17.0 ppb |
2018-11-05 | 201817093-DBP | 18.0 ppb |
2018-11-05 | 201817096-DBP | 17.0 ppb |
2018-11-05 | 201817097-DBP | 18.0 ppb |
2019-02-04 | 201901595-DBP | 7.00 ppb |
2019-02-04 | 201901591-DBP | 12.0 ppb |
2019-02-04 | 201901593-DBP | 12.0 ppb |
2019-02-04 | 201901592-DBP | 15.0 ppb |
2019-02-04 | 201901597-DBP | 15.0 ppb |
2019-02-04 | 201901596-DBP | 11.0 ppb |
2019-02-04 | 201901598-DBP | 9.00 ppb |
2019-02-04 | 201901594-DBP | 15.0 ppb |
2019-04-01 | 201904114-VOC1 | 12.4 ppb |
2019-04-01 | 201904109-VOC1 | 4.60 ppb |
2019-05-06 | 201906159-DBP | 20.0 ppb |
2019-05-06 | 201906128-DBP | 14.0 ppb |
2019-05-06 | 201906161-DBP | 21.0 ppb |
2019-05-06 | 201906158-DBP | 20.0 ppb |
2019-05-06 | 201906129-DBP | 18.0 ppb |
2019-05-06 | 201906130-DBP | 17.0 ppb |
2019-05-06 | 201906160-DBP | 18.0 ppb |
2019-05-06 | 201906127-DBP | 14.0 ppb |
2019-08-05 | 201912209-DBP | 16.0 ppb |
2019-08-05 | 201912210-DBP | 17.0 ppb |
2019-08-05 | 201912208-DBP | 13.0 ppb |
2019-08-05 | 201912207-DBP | 16.0 ppb |
2019-08-06 | 201912345-DBP | 16.0 ppb |
2019-08-06 | 201912346-DBP | 18.0 ppb |
2019-08-06 | 201912348-DBP | 16.0 ppb |
2019-08-06 | 201912347-DBP | 17.0 ppb |
2019-11-04 | 201918072-DBP | 14.0 ppb |
2019-11-04 | 201918101-DBP | 18.0 ppb |
2019-11-04 | 201918073-DBP | 10.00 ppb |
2019-11-04 | 201918104-DBP | 19.0 ppb |
2019-11-04 | 201918103-DBP | 17.0 ppb |
2019-11-04 | 201918074-DBP | 14.0 ppb |
2019-11-04 | 201918075-DBP | 14.0 ppb |
2019-11-04 | 201918102-DBP | 20.0 ppb |