Dibromochloromethane

City of Santa Fe Water System

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.

MORE ABOUT THIS CONTAMINANT

192

Samples

Samples exceeding legal limit (MCL)

145

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	1.52 ppb	32	9	ND - 6.00 ppb
2015	2.56 ppb	32	22	ND - 8.14 ppb
2016	3.36 ppb	32	32	0.500 ppb - 9.45 ppb
2017	2.05 ppb	32	32	0.574 ppb - 6.44 ppb
2018	4.82 ppb	32	32	0.640 ppb - 9.53 ppb
2019	1.16 ppb	32	18	ND - 6.79 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
2014-02-19	1402868-001A	5.52 ppb
2014-02-19	1402843-002A	ND
2014-02-19	1402875-001A	ND
2014-02-19	1402870-001A	ND
2014-02-19	1402873-001A	ND
2014-02-19	1402846-001A	ND
2014-02-19	1402847-001A	ND
2014-02-19	1402872-001A	ND
2014-05-19	1405791-001A	5.32 ppb
2014-05-19	1405795-001A	5.25 ppb
2014-05-19	1405804-001A	5.18 ppb
2014-05-19	1405793-001A	5.13 ppb
2014-05-19	1405799-001A	5.08 ppb
2014-05-19	1405801-001A	ND
2014-05-19	1405802-001A	ND
2014-05-19	1405788-001A	ND
2014-08-20	1408A73-001A	5.40 ppb
2014-08-20	1408A61-001A	ND
2014-08-20	1408A71-001A	ND
2014-08-20	1408A57-001A	ND
2014-08-20	1408A59-001A	ND
2014-08-20	1408A54-001A	ND
2014-08-20	1408A58-001A	ND
2014-08-20	1408A64-001A	ND
2014-11-18	1411740-001A	6.00 ppb
2014-11-18	1411738-001A	5.65 ppb
2014-11-18	1411736-001A	ND
2014-11-18	1411739-001A	ND
2014-11-18	1411733-001A	ND
2014-11-18	1411737-001A	ND
2014-11-18	1411734-001A	ND
2014-11-18	1411735-001A	ND
2015-02-20	1502890-001A	6.60 ppb
2015-02-20	1502897-001A	5.14 ppb
2015-02-20	1502892-001A	ND
2015-02-20	1502896-001A	ND
2015-02-20	1502893-001A	ND
2015-02-20	1502887-001A	ND
2015-02-20	1502882-001A	ND
2015-02-20	1502889-001A	ND
2015-05-14	1505736-001A	5.10 ppb
2015-05-14	1505738-001A	4.87 ppb
2015-05-14	1505740-001A	1.66 ppb
2015-05-14	1505739-001A	0.500 ppb
2015-05-14	1505734-001A	ND
2015-05-14	1505737-001A	ND
2015-05-14	1505735-001A	ND
2015-05-14	1505733-001A	ND
2015-08-20	2015026009	6.40 ppb
2015-08-20	2015026002	5.20 ppb
2015-08-20	2015026005	4.50 ppb
2015-08-20	2015026004	0.960 ppb
2015-08-20	2015026008	0.770 ppb
2015-08-20	2015026006	0.770 ppb
2015-08-20	2015026003	0.740 ppb
2015-08-20	2015026007	0.700 ppb
2015-11-18	1511A66-001A	8.14 ppb
2015-11-18	1511A69-001A	6.63 ppb
2015-11-18	1511A73-001A	5.43 ppb
2015-11-18	1511A67-001A	4.63 ppb
2015-11-18	1511A71-001A	4.18 ppb
2015-11-18	1511A72-001A	4.17 ppb
2015-11-18	1511A70-001A	3.48 ppb
2015-11-18	1511A68-001A	1.37 ppb
2016-02-19	1602872-001A	4.76 ppb
2016-02-19	1602878-001A	3.87 ppb
2016-02-19	1602880-001A	1.89 ppb
2016-02-19	1602875-001A	1.78 ppb
2016-02-19	1602881-001A	1.04 ppb
2016-02-19	1602879-001A	0.827 ppb
2016-02-26	1602B39-001A	4.82 ppb
2016-02-26	1602B41-001A	1.03 ppb
2016-05-17	1605816-001A	4.76 ppb
2016-05-17	1605815-001A	3.40 ppb
2016-05-17	1605814-001A	2.22 ppb
2016-05-17	1605809-001A	1.74 ppb
2016-05-17	1605810-001A	1.53 ppb
2016-05-17	1605807-001A	1.32 ppb
2016-05-17	1605811-001A	1.21 ppb
2016-05-17	1605812-001A	0.963 ppb
2016-08-23	1608D78-001A	3.54 ppb
2016-08-23	1608D76-001A	1.84 ppb
2016-08-23	1608D79-001A	0.832 ppb
2016-08-23	1608D75-001A	0.722 ppb
2016-08-23	1608D81-001A	0.662 ppb
2016-08-23	1608D83-001A	0.652 ppb
2016-08-23	1608D80-001A	0.535 ppb
2016-08-23	1608D82-001A	0.500 ppb
2016-11-16	1611916-001	9.45 ppb
2016-11-16	1611919-001	9.06 ppb
2016-11-16	1611913-001	8.01 ppb
2016-11-16	1611918-001	7.97 ppb
2016-11-16	1611914-001	7.77 ppb
2016-11-16	1611924-001	7.75 ppb
2016-11-16	1611922-001	6.32 ppb
2016-11-16	1611920-001	4.59 ppb
2017-02-22	1702A05-001	4.94 ppb
2017-02-22	1702A06-001	4.54 ppb
2017-02-22	1702A08-001	4.08 ppb
2017-02-22	1702A14-001	1.94 ppb
2017-02-22	1702A09-001	0.979 ppb
2017-02-22	1702A07-001	0.962 ppb
2017-02-22	1702A17-001	0.943 ppb
2017-02-22	1702A10-001	0.807 ppb
2017-05-16	1705B15-001	3.42 ppb
2017-05-16	1705B16-001	3.07 ppb
2017-05-16	1705B17-001	1.71 ppb
2017-05-16	1705B14-001	1.06 ppb
2017-05-16	1705B18-001	0.888 ppb
2017-05-16	1705B21-001	0.626 ppb
2017-05-16	1705B19-001	0.580 ppb
2017-05-16	1705B20-001	0.574 ppb
2017-08-22	1708D87-001	6.44 ppb
2017-08-22	1708D89-001	4.70 ppb
2017-08-22	1708D91-001	4.32 ppb
2017-08-22	1708F32-001	1.63 ppb
2017-08-22	1708D84-001	0.956 ppb
2017-08-22	1708D83-001	0.697 ppb
2017-08-22	1708D85-001	0.626 ppb
2017-08-22	1708D88-001	0.608 ppb
2017-11-22	1711C30-001	4.74 ppb
2017-11-22	1711C23-001	3.40 ppb
2017-11-22	1711C22-001	2.40 ppb
2017-11-22	1711C29-001	0.883 ppb
2017-11-22	1711C25-001	0.830 ppb
2017-11-22	1711C28-001	0.801 ppb
2017-11-22	1711C24-001	0.690 ppb
2017-11-22	1711C26-001	0.676 ppb
2018-02-19	1802A42-001	0.668 ppb
2018-02-19	1802A47-001	4.93 ppb
2018-02-19	1802A49-001	3.52 ppb
2018-02-19	1802A50-001	1.77 ppb
2018-02-19	1802A51-001	5.65 ppb
2018-02-19	1802A52-001	0.640 ppb
2018-02-19	1802A53-001	0.688 ppb
2018-02-19	1802A54-001	2.25 ppb
2018-05-16	1805925-001	4.10 ppb
2018-05-16	1805927-001	5.38 ppb
2018-05-16	1805930-001	3.97 ppb
2018-05-16	1805932-001	4.82 ppb
2018-05-16	1805935-001	0.959 ppb
2018-05-16	1805939-001	0.934 ppb
2018-05-16	1805941-001	4.24 ppb
2018-05-16	1805942-001	3.24 ppb
2018-08-21	1808D17-001	4.07 ppb
2018-08-21	1808D18-001	7.03 ppb
2018-08-21	1808D19-001	8.74 ppb
2018-08-21	1808D21-001	5.13 ppb
2018-08-21	1808D24-001	6.52 ppb
2018-08-21	1808D25-001	6.31 ppb
2018-08-21	1808D27-001	7.60 ppb
2018-08-21	1808D29-001	5.97 ppb
2018-11-19	1811992-001	7.70 ppb
2018-11-19	1811994-001	9.53 ppb
2018-11-19	1811996-001	4.89 ppb
2018-11-19	1811997-001	6.17 ppb
2018-11-19	1811998-001	1.30 ppb
2018-11-19	1811A00-001	9.21 ppb
2018-11-19	1811A01-001	7.50 ppb
2018-11-19	1811A02-001	8.86 ppb
2019-02-19	1902809-001	1.08 ppb
2019-02-19	1902810-001	5.13 ppb
2019-02-19	1902813-001	ND
2019-02-19	1902814-001	2.03 ppb
2019-02-19	1902816-001	0.702 ppb
2019-02-19	1902817-001	6.79 ppb
2019-02-19	1902818-001	1.09 ppb
2019-02-19	1902819-001	1.08 ppb
2019-05-14	1905769-001	ND
2019-05-14	1905771-001	ND
2019-05-14	1905773-001	2.14 ppb
2019-05-14	1905774-001	1.85 ppb
2019-05-14	1905777-001	ND
2019-05-14	1905780-001	ND
2019-05-14	1905781-001	ND
2019-05-14	1905783-001	ND
2019-08-20	1908C96-001	ND
2019-08-20	1908C99-001	3.95 ppb
2019-08-20	1908D01-001	ND
2019-08-20	1908D03-001	ND
2019-08-20	1908D05-001	3.16 ppb
2019-08-20	1908D07-001	ND
2019-08-20	1908D09-001	ND
2019-08-20	1908D10-001	ND
2019-11-19	1911984-001	ND
2019-11-19	1911986-001	0.595 ppb
2019-11-19	1911987-001	2.40 ppb
2019-11-19	1911990-001	0.622 ppb
2019-11-19	1911993-001	0.837 ppb
2019-11-19	1911994-001	0.810 ppb
2019-11-19	1911995-001	0.814 ppb
2019-11-19	1911996-001	1.90 ppb