Dibromochloromethane
Pawtucket
Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane 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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 1.85 ppb | 16 | 8 | ND - 5.20 ppb |
2015 | 4.22 ppb | 36 | 32 | ND - 13.0 ppb |
2016 | 3.93 ppb | 36 | 32 | ND - 6.80 ppb |
2017 | 3.70 ppb | 46 | 36 | ND - 7.20 ppb |
2018 | 4.12 ppb | 46 | 40 | ND - 7.00 ppb |
2019 | 2.59 ppb | 20 | 16 | ND - 4.00 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.1 ppb
The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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 |
---|---|---|
2014-01-27 | 1401232-01_TO12 | ND |
2014-03-27 | 1402016-01_TO12 | ND |
2014-03-27 | 1402016-02_TO12 | ND |
2014-04-07 | 1402198-07_TO12 | ND |
2014-04-07 | 1402198-03_TO12 | ND |
2014-04-07 | 1402198-04_TO12 | ND |
2014-04-07 | 1402198-05_TO12 | ND |
2014-04-07 | 1402198-06_TO12 | ND |
2014-07-09 | 1407-15125-001 | 4.50 ppb |
2014-07-09 | 1407-15125-002 | 5.20 ppb |
2014-07-09 | 1407-15125-003 | 4.10 ppb |
2014-07-09 | 1407-15125-004 | 3.20 ppb |
2014-07-09 | 1407-15125-005 | 3.50 ppb |
2014-07-09 | 1407-15125-006 | 3.30 ppb |
2014-07-09 | 1407-15125-007 | 2.60 ppb |
2014-07-09 | 1407-15125-008 | 3.20 ppb |
2015-01-14 | 1501-01032-001 | 10.00 ppb |
2015-01-14 | 1501-01032-002 | 9.20 ppb |
2015-01-14 | 1501-01032-003 | 8.00 ppb |
2015-01-14 | 1501-01032-004 | 13.0 ppb |
2015-01-14 | 1501-01032-005TH | 9.40 ppb |
2015-01-14 | 1501-01032-007TH | 9.40 ppb |
2015-01-14 | 1501-01032-008TH | 7.80 ppb |
2015-01-14 | 1501-10132-006TH | 9.60 ppb |
2015-03-31 | 1501722-03_TO12 | ND |
2015-03-31 | 1501722-02_TO12 | ND |
2015-03-31 | 1501722-01_TO12 | ND |
2015-04-08 | 1504-07021-001T | 2.10 ppb |
2015-04-08 | 1504-07021-002T | 1.60 ppb |
2015-04-08 | 1504-07021-003T | 1.80 ppb |
2015-04-08 | 1504-07021-004T | 2.50 ppb |
2015-04-08 | 1504-07021-005T | 2.20 ppb |
2015-04-08 | 1504-07021-006T | 2.20 ppb |
2015-04-08 | 1504-07021-007T | 1.70 ppb |
2015-04-08 | 1504-07021-008T | 1.80 ppb |
2015-04-28 | 1501999-02_TO12 | ND |
2015-07-08 | 1507-14382-001 | 5.00 ppb |
2015-07-08 | 1507-14382-002 | 3.60 ppb |
2015-07-08 | 1507-14382-003 | 4.10 ppb |
2015-07-08 | 1507-14382-004 | 4.60 ppb |
2015-07-08 | 1507-14382-005 | 5.00 ppb |
2015-07-08 | 1507-14382-006 | 4.40 ppb |
2015-07-08 | 1507-14382-007 | 3.50 ppb |
2015-07-08 | 1507-14382-008 | 5.50 ppb |
2015-10-07 | 1510-21765-001 | 4.40 ppb |
2015-10-07 | 1510-21765-002 | 2.00 ppb |
2015-10-07 | 1510-21765-003 | 2.50 ppb |
2015-10-07 | 1510-21765-004 | 3.10 ppb |
2015-10-07 | 1510-21765-005 | 3.30 ppb |
2015-10-07 | 1510-21765-006 | 2.80 ppb |
2015-10-07 | 1510-21765-007 | 2.90 ppb |
2015-10-07 | 1510-21765-008 | 2.90 ppb |
2016-01-06 | 1601-00470-001TH | 4.40 ppb |
2016-01-06 | 1601-00470-002TH | 3.40 ppb |
2016-01-06 | 1601-00470-003TH | 3.40 ppb |
2016-01-06 | 1601-00470-004TH | 5.10 ppb |
2016-01-06 | 1601-00470-005TH | 4.20 ppb |
2016-01-06 | 1601-00470-006TH | 3.80 ppb |
2016-01-06 | 1601-00470-007TH | 4.30 ppb |
2016-01-06 | 1601-00470-008TH | 3.60 ppb |
2016-03-22 | 1601566-01_TO12 | ND |
2016-03-22 | 1601566-02_TO12 | ND |
2016-04-06 | 1604-07876-001TH | 4.50 ppb |
2016-04-06 | 1604-07876-002TH | 2.60 ppb |
2016-04-06 | 1604-07876-003TH | 3.40 ppb |
2016-04-06 | 1604-07876-004TH | 6.00 ppb |
2016-04-06 | 1604-07876-005TH | 4.20 ppb |
2016-04-06 | 1604-07876-006TH | 4.00 ppb |
2016-04-06 | 1604-07876-007TH | 4.20 ppb |
2016-04-06 | 1604-07876-008TH | 3.70 ppb |
2016-06-07 | 1602458-01_TO12 | ND |
2016-06-27 | 1602860-01_TO12 | ND |
2016-07-06 | 1607-15553-001T | 6.80 ppb |
2016-07-06 | 1607-15553-002T | 4.70 ppb |
2016-07-06 | 1607-15553-003T | 4.70 ppb |
2016-07-06 | 1607-15553-004T | 5.00 ppb |
2016-07-06 | 1607-15553-005T | 5.80 ppb |
2016-07-06 | 1607-15553-006T | 4.60 ppb |
2016-07-06 | 1607-15553-007T | 3.70 ppb |
2016-07-06 | 1607-15553-008T | 4.80 ppb |
2016-10-05 | 1610-23719-004 | 6.00 ppb |
2016-10-05 | 1610-23719-005 | 4.20 ppb |
2016-10-05 | 1610-23719-006 | 4.20 ppb |
2016-10-05 | 1610-23719-007 | 5.10 ppb |
2016-10-05 | 1610-23719-008 | 5.20 ppb |
2016-10-05 | 1610-23719-009 | 4.50 ppb |
2016-10-05 | 1610-23719-010 | 3.20 ppb |
2016-10-05 | 1610-23719-011 | 4.10 ppb |
2017-01-04 | 1701-00325-001 | 4.30 ppb |
2017-01-04 | 1701-00325-002 | 3.40 ppb |
2017-01-04 | 1701-00325-003 | 3.40 ppb |
2017-01-04 | 1701-00325-004 | 4.60 ppb |
2017-01-04 | 1701-00325-005 | 4.20 ppb |
2017-01-04 | 1701-00325-006 | 3.60 ppb |
2017-01-04 | 1701-00325-007 | 2.60 ppb |
2017-01-04 | 1701-00325-008 | 3.30 ppb |
2017-02-01 | 1701096-01_TO12 | ND |
2017-03-29 | 1701674-02_TO12 | ND |
2017-03-29 | 1701674-01_TO12 | ND |
2017-04-05 | 1704-07152-005 | 5.30 ppb |
2017-04-05 | 1704-07152-006 | 3.30 ppb |
2017-04-05 | 1704-07152-008 | 4.00 ppb |
2017-04-05 | 1704-07152-009 | 4.40 ppb |
2017-04-05 | 1704-07152-010 | 3.50 ppb |
2017-04-05 | 1704-07152-011 | 2.60 ppb |
2017-04-05 | 1704-07152-012 | 3.10 ppb |
2017-04-06 | 1704-07152-007 | 3.00 ppb |
2017-04-17 | 1701862-06_TO12 | ND |
2017-04-17 | 1701862-02_TO12 | ND |
2017-04-17 | 1701862-01_TO12 | ND |
2017-04-17 | 1701862-03_TO12 | ND |
2017-04-17 | 1701862-04_TO12 | ND |
2017-07-05 | 1707-14358-002 | 6.10 ppb |
2017-07-05 | 1707-14358-003 | 5.60 ppb |
2017-07-05 | 1707-14358-004 | 5.70 ppb |
2017-07-05 | 1707-14358-005 | 6.80 ppb |
2017-07-05 | 1707-14358-006 | 6.90 ppb |
2017-07-05 | 1707-14358-007 | 5.70 ppb |
2017-07-05 | 1707-14358-008 | 4.90 ppb |
2017-07-05 | 1707-14358-009 | 6.50 ppb |
2017-10-04 | 1710-21672-001 | 7.20 ppb |
2017-10-04 | 1710-21672-002 | 4.40 ppb |
2017-10-04 | 1710-21672-003 | 5.10 ppb |
2017-10-04 | 1710-21672-004 | 6.00 ppb |
2017-10-04 | 1710-21672-005 | 6.40 ppb |
2017-10-04 | 1710-21672-006 | 5.00 ppb |
2017-10-04 | 1710-21672-007 | 3.80 ppb |
2017-10-04 | 1710-21672-008 | 4.80 ppb |
2017-11-01 | 1704846-01_TO12 | ND |
2017-12-20 | 1712-27631-001 | 1.90 ppb |
2017-12-20 | 1712-27631-002 | ND |
2017-12-20 | 1712-27631-003 | 4.70 ppb |
2017-12-20 | 1712-27631-004 | 7.00 ppb |
2017-12-20 | 1712-27631-005 | 6.90 ppb |
2018-01-03 | 1801-00177-004 | 6.60 ppb |
2018-01-03 | 1801-00177-005 | 4.50 ppb |
2018-01-03 | 1801-00177-006 | 5.70 ppb |
2018-01-03 | 1801-00177-007 | 7.00 ppb |
2018-01-03 | 1801-00177-008 | 6.60 ppb |
2018-01-03 | 1801-00177-009 | 5.90 ppb |
2018-01-03 | 1801-00177-010 | 4.30 ppb |
2018-01-03 | 1801-00177-011 | 4.90 ppb |
2018-01-24 | 1801-01833-001 | 1.40 ppb |
2018-01-24 | 1801-01833-002 | ND |
2018-01-24 | 1801-01833-003 | 1.60 ppb |
2018-01-24 | 1801-01833-004 | 5.00 ppb |
2018-01-24 | 1801-01833-005 | 4.80 ppb |
2018-02-28 | 1803-04382-001 | 1.20 ppb |
2018-02-28 | 1803-04382-002 | ND |
2018-02-28 | 1803-04382-003 | 3.10 ppb |
2018-02-28 | 1803-04382-004 | 4.40 ppb |
2018-02-28 | 1803-04382-005 | 3.90 ppb |
2018-03-28 | 1801540-01_TO12 | ND |
2018-03-28 | 1801540-02_TO12 | ND |
2018-03-28 | 1801540-03_TO12 | ND |
2018-04-04 | 1804-06826-001 | 4.00 ppb |
2018-04-04 | 1804-06826-002 | 3.30 ppb |
2018-04-04 | 1804-06826-003 | 4.10 ppb |
2018-04-04 | 1804-06826-004 | 4.90 ppb |
2018-04-04 | 1804-06826-005 | 4.40 ppb |
2018-04-04 | 1804-06826-006 | 4.60 ppb |
2018-04-04 | 1804-06826-007 | 3.00 ppb |
2018-04-04 | 1804-06826-008 | 3.50 ppb |
2018-04-30 | 1801885-02_TO12 | ND |
2018-07-05 | 1807-14124-001 | 6.40 ppb |
2018-07-05 | 1807-14124-002 | 4.60 ppb |
2018-07-05 | 1807-14124-003 | 5.00 ppb |
2018-07-05 | 1807-14124-004 | 5.10 ppb |
2018-07-05 | 1807-14124-005 | 5.90 ppb |
2018-07-05 | 1807-14124-006 | 4.80 ppb |
2018-07-05 | 1807-14124-007 | 4.40 ppb |
2018-07-05 | 1807-14124-008 | 6.30 ppb |
2018-10-03 | 1810-21399-001 | 6.90 ppb |
2018-10-03 | 1810-21399-002 | 4.40 ppb |
2018-10-03 | 1810-21399-003 | 5.10 ppb |
2018-10-03 | 1810-21399-004 | 6.30 ppb |
2018-10-03 | 1810-21399-005 | 6.20 ppb |
2018-10-03 | 1810-21399-006 | 5.70 ppb |
2018-10-03 | 1810-21399-007 | 4.40 ppb |
2018-10-03 | 1810-21399-008 | 5.20 ppb |
2019-01-02 | 1901-00209-001 | 4.00 ppb |
2019-01-02 | 1901-00209-002 | 2.80 ppb |
2019-01-02 | 1901-00209-003 | 3.20 ppb |
2019-01-02 | 1901-00209-004 | 3.80 ppb |
2019-01-02 | 1901-00209-005 | 3.80 ppb |
2019-01-02 | 1901-00209-006 | 3.40 ppb |
2019-01-02 | 1901-00209-007 | 3.50 ppb |
2019-01-02 | 1901-00209-008 | 3.10 ppb |
2019-03-26 | 1901463-02_TO12 | ND |
2019-03-26 | 1901463-03_TO12 | ND |
2019-03-26 | 1901463-01_TO12 | ND |
2019-04-03 | 1904-06057-001 | 3.20 ppb |
2019-04-03 | 1904-06057-002 | 2.70 ppb |
2019-04-03 | 1904-06057-003 | 2.90 ppb |
2019-04-03 | 1904-06057-004 | 3.40 ppb |
2019-04-03 | 1904-06057-005 | 3.30 ppb |
2019-04-03 | 1904-06057-006 | 3.10 ppb |
2019-04-03 | 1904-06057-007 | 2.90 ppb |
2019-04-03 | 1904-06057-008 | 2.70 ppb |
2019-06-27 | 1902770-01_TO12 | ND |