Bromodichloromethane
Aquarion Water Company of Connecticut - Stamford
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 10.7 ppb | 33 | 33 | 5.00 ppb - 17.0 ppb |
| 2019 | 10.2 ppb | 33 | 33 | 4.00 ppb - 15.0 ppb |
| 2020 | 7.60 ppb | 33 | 33 | 4.00 ppb - 12.0 ppb |
| 2021 | 8.71 ppb | 33 | 33 | 5.00 ppb - 14.0 ppb |
| 2022 | 8.55 ppb | 34 | 34 | 4.00 ppb - 14.0 ppb |
| 2023 | 8.41 ppb | 35 | 35 | 3.00 ppb - 15.0 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.06 ppb
The EWG Health Guideline of 0.06 ppb for bromodichloromethane was based on the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer and harm to fetal growth and development.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-02 | 201800021-VOC1 | 5.50 ppb |
| 2018-02-07 | 201801740-DBP | 8.00 ppb |
| 2018-02-07 | 201801741-DBP | 10.00 ppb |
| 2018-02-07 | 201801739-DBP | 8.00 ppb |
| 2018-02-08 | 201801818-DBP | 8.00 ppb |
| 2018-02-08 | 201801826-DBP | 12.0 ppb |
| 2018-02-08 | 201801822-DBP | 9.00 ppb |
| 2018-02-08 | 201801819-DBP | 10.00 ppb |
| 2018-02-08 | 201801824-DBP | 9.00 ppb |
| 2018-05-07 | 201806185-DBP | 12.0 ppb |
| 2018-05-07 | 201806180-DBP | 6.00 ppb |
| 2018-05-07 | 201806181-DBP | 7.00 ppb |
| 2018-05-07 | 201806182-DBP | 11.0 ppb |
| 2018-05-07 | 201806183-DBP | 10.00 ppb |
| 2018-05-07 | 201806179-DBP | 5.00 ppb |
| 2018-05-07 | 201806186-DBP | 13.0 ppb |
| 2018-05-07 | 201806184-DBP | 11.0 ppb |
| 2018-08-06 | 201811707-DBP | 16.0 ppb |
| 2018-08-06 | 201811701-DBP | 8.00 ppb |
| 2018-08-06 | 201811703-DBP | 8.00 ppb |
| 2018-08-06 | 201811708-DBP | 17.0 ppb |
| 2018-08-06 | 201811706-DBP | 17.0 ppb |
| 2018-08-06 | 201811704-DBP | 17.0 ppb |
| 2018-08-06 | 201811700-DBP | 7.00 ppb |
| 2018-08-06 | 201811705-DBP | 17.0 ppb |
| 2018-11-05 | 201817166-DBP | 15.0 ppb |
| 2018-11-05 | 201817168-DBP | 13.0 ppb |
| 2018-11-05 | 201817169-DBP | 14.0 ppb |
| 2018-11-05 | 201817161-DBP | 5.00 ppb |
| 2018-11-05 | 201817159-DBP | 7.00 ppb |
| 2018-11-05 | 201817162-DBP | 8.00 ppb |
| 2018-11-05 | 201817163-DBP | 16.0 ppb |
| 2018-11-05 | 201817165-DBP | 14.0 ppb |
| 2019-01-07 | 201900234-VOC1 | 7.10 ppb |
| 2019-02-04 | 201901624-DBP | 11.0 ppb |
| 2019-02-04 | 201901625-DBP | 14.0 ppb |
| 2019-02-04 | 201901621-DBP | 10.00 ppb |
| 2019-02-04 | 201901628-DBP | 9.00 ppb |
| 2019-02-04 | 201901626-DBP | 8.00 ppb |
| 2019-02-04 | 201901622-DBP | 13.0 ppb |
| 2019-02-04 | 201901623-DBP | 12.0 ppb |
| 2019-02-04 | 201901627-DBP | 10.00 ppb |
| 2019-05-07 | 201906277-DBP | 12.0 ppb |
| 2019-05-07 | 201906278-DBP | 15.0 ppb |
| 2019-05-07 | 201906274-DBP | 5.00 ppb |
| 2019-05-07 | 201906281-DBP | 11.0 ppb |
| 2019-05-07 | 201906279-DBP | 9.00 ppb |
| 2019-05-07 | 201906275-DBP | 7.00 ppb |
| 2019-05-07 | 201906276-DBP | 8.00 ppb |
| 2019-05-07 | 201906280-DBP | 13.0 ppb |
| 2019-08-05 | 201912243-DBP | 15.0 ppb |
| 2019-08-05 | 201912240-DBP | 13.0 ppb |
| 2019-08-05 | 201912241-DBP | 14.0 ppb |
| 2019-08-05 | 201912236-DBP | 6.00 ppb |
| 2019-08-05 | 201912244-DBP | 15.0 ppb |
| 2019-08-05 | 201912242-DBP | 14.0 ppb |
| 2019-08-05 | 201912237-DBP | 9.00 ppb |
| 2019-08-05 | 201912239-DBP | 9.00 ppb |
| 2019-11-04 | 201918111-DBP | 10.00 ppb |
| 2019-11-04 | 201918112-DBP | 8.00 ppb |
| 2019-11-04 | 201918106-DBP | 4.00 ppb |
| 2019-11-04 | 201918115-DBP | 11.0 ppb |
| 2019-11-04 | 201918113-DBP | 9.00 ppb |
| 2019-11-04 | 201918114-DBP | 10.00 ppb |
| 2019-11-04 | 201918107-DBP | 9.00 ppb |
| 2019-11-04 | 201918110-DBP | 8.00 ppb |
| 2020-01-06 | 202000154-VOC1 | 4.90 ppb |
| 2020-02-03 | 202001657-DBP | 7.00 ppb |
| 2020-02-03 | 202001658-DBP | 6.00 ppb |
| 2020-02-03 | 202001660-DBP | 7.00 ppb |
| 2020-02-03 | 202001656-DBP | 4.00 ppb |
| 2020-02-03 | 202001663-DBP | 8.00 ppb |
| 2020-02-03 | 202001661-DBP | 7.00 ppb |
| 2020-02-03 | 202001662-DBP | 8.00 ppb |
| 2020-02-03 | 202001659-DBP | 6.00 ppb |
| 2020-05-05 | 202006329-DBP | 4.00 ppb |
| 2020-05-05 | 202006330-DBP | 7.00 ppb |
| 2020-05-05 | 202006333-DBP | 8.00 ppb |
| 2020-05-05 | 202006332-DBP | 6.00 ppb |
| 2020-05-05 | 202006331-DBP | 8.00 ppb |
| 2020-05-05 | 202006328-DBP | 5.00 ppb |
| 2020-05-05 | 202006327-DBP | 5.00 ppb |
| 2020-05-05 | 202006326-DBP | 8.00 ppb |
| 2020-08-06 | 202012102-DBP | 9.00 ppb |
| 2020-08-06 | 202012103-DBP | 4.00 ppb |
| 2020-08-06 | 202012107-DBP | 10.00 ppb |
| 2020-08-06 | 202012105-DBP | 5.00 ppb |
| 2020-08-06 | 202012106-DBP | 9.00 ppb |
| 2020-08-06 | 202012109-DBP | 10.00 ppb |
| 2020-08-06 | 202012108-DBP | 9.00 ppb |
| 2020-08-07 | 202012304-DBP | 7.00 ppb |
| 2020-11-05 | 202018145-DBP | 8.00 ppb |
| 2020-11-05 | 202018144-DBP | 9.00 ppb |
| 2020-11-05 | 202018143-DBP | 11.0 ppb |
| 2020-11-05 | 202018146-DBP | 6.00 ppb |
| 2020-11-05 | 202018147-DBP | 10.00 ppb |
| 2020-11-05 | 202018150-DBP | 12.0 ppb |
| 2020-11-05 | 202018149-DBP | 11.0 ppb |
| 2020-11-05 | 202018148-DBP | 12.0 ppb |
| 2021-01-04 | 202100057-VOC1 | 5.40 ppb |
| 2021-02-02 | 202101455-DBP | 5.00 ppb |
| 2021-02-02 | 202101454-DBP | 5.00 ppb |
| 2021-02-03 | 202101519-DBP | 7.00 ppb |
| 2021-02-03 | 202101520-DBP | 7.00 ppb |
| 2021-02-03 | 202101518-DBP | 7.00 ppb |
| 2021-02-03 | 202101515-DBP | 6.00 ppb |
| 2021-02-03 | 202101516-DBP | 7.00 ppb |
| 2021-02-04 | 202101626-DBP | 5.00 ppb |
| 2021-05-03 | 202106148-DBP | 6.00 ppb |
| 2021-05-03 | 202106147-DBP | 8.00 ppb |
| 2021-05-03 | 202106146-DBP | 5.00 ppb |
| 2021-05-04 | 202106267-DBP | 8.00 ppb |
| 2021-05-04 | 202106268-DBP | 8.00 ppb |
| 2021-05-04 | 202106270-DBP | 10.00 ppb |
| 2021-05-04 | 202106271-DBP | 9.00 ppb |
| 2021-05-04 | 202106269-DBP | 8.00 ppb |
| 2021-08-02 | 202112000-DBP | 13.0 ppb |
| 2021-08-02 | 202112002-DBP | 11.0 ppb |
| 2021-08-02 | 202112001-DBP | 9.00 ppb |
| 2021-08-02 | 202112003-DBP | 13.0 ppb |
| 2021-08-02 | 202112004-DBP | 12.0 ppb |
| 2021-08-04 | 202112298-DBP | 14.0 ppb |
| 2021-08-04 | 202112299-DBP | 12.0 ppb |
| 2021-08-04 | 202112295-DBP | 11.0 ppb |
| 2021-11-01 | 202117935-DBP | 10.00 ppb |
| 2021-11-01 | 202117936-DBP | 6.00 ppb |
| 2021-11-01 | 202117937-DBP | 8.00 ppb |
| 2021-11-01 | 202117938-DBP | 11.0 ppb |
| 2021-11-01 | 202117939-DBP | 8.00 ppb |
| 2021-11-01 | 202117946-DBP | 12.0 ppb |
| 2021-11-01 | 202117947-DBP | 10.00 ppb |
| 2021-11-01 | 202117948-DBP | 11.0 ppb |
| 2022-01-03 | 202200073-VOC1 | 5.20 ppb |
| 2022-02-07 | 202202069-DBP | 6.00 ppb |
| 2022-02-07 | 202202070-DBP | 10.00 ppb |
| 2022-02-07 | 202202071-DBP | 6.00 ppb |
| 2022-02-07 | 202202072-DBP | 8.00 ppb |
| 2022-02-07 | 202202073-DBP | 10.00 ppb |
| 2022-02-07 | 202202074-DBP | 7.00 ppb |
| 2022-02-07 | 202202080-DBP | 7.00 ppb |
| 2022-02-07 | 202202081-DBP | 6.00 ppb |
| 2022-05-02 | 202206701-DBP | 7.00 ppb |
| 2022-05-02 | 202206702-DBP | 10.00 ppb |
| 2022-05-02 | 202206703-DBP | 8.00 ppb |
| 2022-05-02 | 202206712-DBP | 10.00 ppb |
| 2022-05-02 | 202206713-DBP | 9.00 ppb |
| 2022-05-02 | 202206714-DBP | 8.00 ppb |
| 2022-05-02 | 202206715-DBP | 10.00 ppb |
| 2022-05-02 | 202206716-DBP | 9.00 ppb |
| 2022-07-18 | 202212142-VOC1 | 7.40 ppb |
| 2022-08-05 | 202213737-DBP | 5.00 ppb |
| 2022-08-05 | 202213741-DBP | 9.00 ppb |
| 2022-08-05 | 202213742-DBP | 9.00 ppb |
| 2022-08-05 | 202213743-DBP | 14.0 ppb |
| 2022-08-05 | 202213744-DBP | 9.00 ppb |
| 2022-08-05 | 202213745-DBP | 12.0 ppb |
| 2022-08-05 | 202213747-DBP | 13.0 ppb |
| 2022-08-05 | 202213748-DBP | 10.00 ppb |
| 2022-11-07 | 202220391-DBP | 6.00 ppb |
| 2022-11-07 | 202220392-DBP | 4.00 ppb |
| 2022-11-07 | 202220393-DBP | 6.00 ppb |
| 2022-11-07 | 202220394-DBP | 10.00 ppb |
| 2022-11-07 | 202220395-DBP | 11.0 ppb |
| 2022-11-07 | 202220402-DBP | 11.0 ppb |
| 2022-11-07 | 202220403-DBP | 9.00 ppb |
| 2022-11-07 | 202220404-DBP | 9.00 ppb |
| 2023-01-03 | 202300189-VOC1 | 4.30 ppb |
| 2023-02-06 | 202301826-DBP | 6.00 ppb |
| 2023-02-06 | 202301827-DBP | 6.00 ppb |
| 2023-02-06 | 202301828-DBP | 5.00 ppb |
| 2023-02-06 | 202301829-DBP | 7.00 ppb |
| 2023-02-06 | 202301830-DBP | 8.00 ppb |
| 2023-02-06 | 202301831-DBP | 6.00 ppb |
| 2023-02-06 | 202301837-DBP | 6.00 ppb |
| 2023-02-06 | 202301839-DBP | 7.00 ppb |
| 2023-02-06 | 202301838-DBP | 3.00 ppb |
| 2023-05-01 | 202306913-DBP | 4.00 ppb |
| 2023-05-01 | 202306914-DBP | 9.00 ppb |
| 2023-05-01 | 202306915-DBP | 9.00 ppb |
| 2023-05-01 | 202306923-DBP | 7.00 ppb |
| 2023-05-01 | 202306924-DBP | 6.00 ppb |
| 2023-05-01 | 202306925-DBP | 7.00 ppb |
| 2023-05-01 | 202306926-DBP | 8.00 ppb |
| 2023-05-01 | 202306927-DBP | 7.00 ppb |
| 2023-08-07 | 202313851-VOC1 | 8.90 ppb |
| 2023-08-24 | 202315517-DBP | 15.0 ppb |
| 2023-08-24 | 202315518-DBP | 15.0 ppb |
| 2023-08-24 | 202315519-DBP | 14.0 ppb |
| 2023-08-24 | 202315520-DBP | 13.0 ppb |
| 2023-08-24 | 202315521-DBP | 11.0 ppb |
| 2023-08-24 | 202315522-DBP | 10.00 ppb |
| 2023-08-24 | 202315523-DBP | 10.00 ppb |
| 2023-08-24 | 202315524-DBP | 10.00 ppb |
| 2023-11-06 | 202320492-DBP | 11.0 ppb |
| 2023-11-06 | 202320493-DBP | 6.00 ppb |
| 2023-11-06 | 202320494-DBP | 8.00 ppb |
| 2023-11-06 | 202320495-DBP | 4.00 ppb |
| 2023-11-06 | 202320496-DBP | 12.0 ppb |
| 2023-11-06 | 202320497-DBP | 10.00 ppb |
| 2023-11-06 | 202320498-DBP | 10.00 ppb |
| 2023-11-06 | 202320499-DBP | 11.0 ppb |