Dibromoacetic acid

United Water Rhode Island

Dibromoacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

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Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	ND	2	0	ND
2015	ND	2	0	ND
2016	ND	2	0	ND
2017	ND	2	0	ND
2018	0.233 ppb	9	2	ND - 1.10 ppb
2019	0.300 ppb	8	2	ND - 1.40 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.04 ppb

The EWG Health Guideline of 0.04 ppb for dibromoacetic acid was defined in a peer-reviewed scientific study by EWG and represents a on-in-a-million lifetime cancer risk level. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-08-26	1408-19053-002	ND
2014-08-26	1408-19053-001	ND
2015-08-26	1508-18227-002	ND
2015-08-26	1508-18227-001	ND
2016-08-30	1608-20369-002	ND
2016-08-30	1608-20369-001	ND
2017-08-14	1708-17502-002	ND
2017-08-14	1708-17502-001	ND
2018-03-07	1803-04783-002	ND
2018-03-07	1803-04783-001	1.000 ppb
2018-06-08	1806-11977-002	ND
2018-06-08	1806-11977-001	ND
2018-09-19	1809-20129-002	ND
2018-09-19	1809-20129-001	ND
2018-10-25	1810-23067-002	1.10 ppb
2018-12-05	1812-25873-002	ND
2018-12-05	1812-25873-001	ND
2019-03-06	1903-03999-002	ND
2019-03-06	1903-03999-001	ND
2019-06-04	1906-10374-002	ND
2019-06-04	1906-10374-001	ND
2019-09-06	1909-16811-002	ND
2019-09-06	1909-16811-001	ND
2019-12-05	1912-22415-001	1.40 ppb
2019-12-05	1912-22415-002	1.000 ppb