Bromoform

Pawtucket

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

200

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2013	N/A	0	0	N/A
2014	ND	16	0	ND
2015	0.967 ppb	36	8	ND - 5.40 ppb
2016	ND	36	0	ND
2017	ND	46	0	ND
2018	ND	46	0	ND
2019	ND	20	0	ND

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
2014-01-27	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	ND
2014-07-09	1407-15125-002	ND
2014-07-09	1407-15125-003	ND
2014-07-09	1407-15125-004	ND
2014-07-09	1407-15125-005	ND
2014-07-09	1407-15125-006	ND
2014-07-09	1407-15125-007	ND
2014-07-09	1407-15125-008	ND
2015-01-14	1501-01032-001	4.40 ppb
2015-01-14	1501-01032-002	4.70 ppb
2015-01-14	1501-01032-003	3.80 ppb
2015-01-14	1501-01032-004	5.40 ppb
2015-01-14	1501-01032-005TH	4.20 ppb
2015-01-14	1501-01032-007TH	4.10 ppb
2015-01-14	1501-01032-008TH	3.90 ppb
2015-01-14	1501-10132-006TH	4.30 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	ND
2015-04-08	1504-07021-002T	ND
2015-04-08	1504-07021-003T	ND
2015-04-08	1504-07021-004T	ND
2015-04-08	1504-07021-005T	ND
2015-04-08	1504-07021-006T	ND
2015-04-08	1504-07021-007T	ND
2015-04-08	1504-07021-008T	ND
2015-04-28	1501999-02_TO12	ND
2015-07-08	1507-14382-001	ND
2015-07-08	1507-14382-002	ND
2015-07-08	1507-14382-003	ND
2015-07-08	1507-14382-004	ND
2015-07-08	1507-14382-005	ND
2015-07-08	1507-14382-006	ND
2015-07-08	1507-14382-007	ND
2015-07-08	1507-14382-008	ND
2015-10-07	1510-21765-001	ND
2015-10-07	1510-21765-002	ND
2015-10-07	1510-21765-003	ND
2015-10-07	1510-21765-004	ND
2015-10-07	1510-21765-005	ND
2015-10-07	1510-21765-006	ND
2015-10-07	1510-21765-007	ND
2015-10-07	1510-21765-008	ND
2016-01-06	1601-00470-001TH	ND
2016-01-06	1601-00470-002TH	ND
2016-01-06	1601-00470-003TH	ND
2016-01-06	1601-00470-004TH	ND
2016-01-06	1601-00470-005TH	ND
2016-01-06	1601-00470-006TH	ND
2016-01-06	1601-00470-007TH	ND
2016-01-06	1601-00470-008TH	ND
2016-03-22	1601566-01_TO12	ND
2016-03-22	1601566-02_TO12	ND
2016-04-06	1604-07876-001TH	ND
2016-04-06	1604-07876-002TH	ND
2016-04-06	1604-07876-003TH	ND
2016-04-06	1604-07876-004TH	ND
2016-04-06	1604-07876-005TH	ND
2016-04-06	1604-07876-006TH	ND
2016-04-06	1604-07876-007TH	ND
2016-04-06	1604-07876-008TH	ND
2016-06-07	1602458-01_TO12	ND
2016-06-27	1602860-01_TO12	ND
2016-07-06	1607-15553-001T	ND
2016-07-06	1607-15553-002T	ND
2016-07-06	1607-15553-003T	ND
2016-07-06	1607-15553-004T	ND
2016-07-06	1607-15553-005T	ND
2016-07-06	1607-15553-006T	ND
2016-07-06	1607-15553-007T	ND
2016-07-06	1607-15553-008T	ND
2016-10-05	1610-23719-004	ND
2016-10-05	1610-23719-005	ND
2016-10-05	1610-23719-006	ND
2016-10-05	1610-23719-007	ND
2016-10-05	1610-23719-008	ND
2016-10-05	1610-23719-009	ND
2016-10-05	1610-23719-010	ND
2016-10-05	1610-23719-011	ND
2017-01-04	1701-00325-001	ND
2017-01-04	1701-00325-002	ND
2017-01-04	1701-00325-003	ND
2017-01-04	1701-00325-004	ND
2017-01-04	1701-00325-005	ND
2017-01-04	1701-00325-006	ND
2017-01-04	1701-00325-007	ND
2017-01-04	1701-00325-008	ND
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	ND
2017-04-05	1704-07152-006	ND
2017-04-05	1704-07152-008	ND
2017-04-05	1704-07152-009	ND
2017-04-05	1704-07152-010	ND
2017-04-05	1704-07152-011	ND
2017-04-05	1704-07152-012	ND
2017-04-06	1704-07152-007	ND
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	ND
2017-07-05	1707-14358-003	ND
2017-07-05	1707-14358-004	ND
2017-07-05	1707-14358-005	ND
2017-07-05	1707-14358-006	ND
2017-07-05	1707-14358-007	ND
2017-07-05	1707-14358-008	ND
2017-07-05	1707-14358-009	ND
2017-10-04	1710-21672-001	ND
2017-10-04	1710-21672-002	ND
2017-10-04	1710-21672-003	ND
2017-10-04	1710-21672-004	ND
2017-10-04	1710-21672-005	ND
2017-10-04	1710-21672-006	ND
2017-10-04	1710-21672-007	ND
2017-10-04	1710-21672-008	ND
2017-11-01	1704846-01_TO12	ND
2017-12-20	1712-27631-001	ND
2017-12-20	1712-27631-002	ND
2017-12-20	1712-27631-003	ND
2017-12-20	1712-27631-004	ND
2017-12-20	1712-27631-005	ND
2018-01-03	1801-00177-004	ND
2018-01-03	1801-00177-005	ND
2018-01-03	1801-00177-006	ND
2018-01-03	1801-00177-007	ND
2018-01-03	1801-00177-008	ND
2018-01-03	1801-00177-009	ND
2018-01-03	1801-00177-010	ND
2018-01-03	1801-00177-011	ND
2018-01-24	1801-01833-001	ND
2018-01-24	1801-01833-002	ND
2018-01-24	1801-01833-003	ND
2018-01-24	1801-01833-004	ND
2018-01-24	1801-01833-005	ND
2018-02-28	1803-04382-001	ND
2018-02-28	1803-04382-002	ND
2018-02-28	1803-04382-003	ND
2018-02-28	1803-04382-004	ND
2018-02-28	1803-04382-005	ND
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	ND
2018-04-04	1804-06826-002	ND
2018-04-04	1804-06826-003	ND
2018-04-04	1804-06826-004	ND
2018-04-04	1804-06826-005	ND
2018-04-04	1804-06826-006	ND
2018-04-04	1804-06826-007	ND
2018-04-04	1804-06826-008	ND
2018-04-30	1801885-02_TO12	ND
2018-07-05	1807-14124-001	ND
2018-07-05	1807-14124-002	ND
2018-07-05	1807-14124-003	ND
2018-07-05	1807-14124-004	ND
2018-07-05	1807-14124-005	ND
2018-07-05	1807-14124-006	ND
2018-07-05	1807-14124-007	ND
2018-07-05	1807-14124-008	ND
2018-10-03	1810-21399-001	ND
2018-10-03	1810-21399-002	ND
2018-10-03	1810-21399-003	ND
2018-10-03	1810-21399-004	ND
2018-10-03	1810-21399-005	ND
2018-10-03	1810-21399-006	ND
2018-10-03	1810-21399-007	ND
2018-10-03	1810-21399-008	ND
2019-01-02	1901-00209-001	ND
2019-01-02	1901-00209-002	ND
2019-01-02	1901-00209-003	ND
2019-01-02	1901-00209-004	ND
2019-01-02	1901-00209-005	ND
2019-01-02	1901-00209-006	ND
2019-01-02	1901-00209-007	ND
2019-01-02	1901-00209-008	ND
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	ND
2019-04-03	1904-06057-002	ND
2019-04-03	1904-06057-003	ND
2019-04-03	1904-06057-004	ND
2019-04-03	1904-06057-005	ND
2019-04-03	1904-06057-006	ND
2019-04-03	1904-06057-007	ND
2019-04-03	1904-06057-008	ND
2019-06-27	1902770-01_TO12	ND