Bromide

City of Orange

Bromide is a naturally occurring element found in surface waters and groundwater. During drinking water treatment, bromide can combine with chlorine or other disinfectants, contributing to the formation of toxic tap water 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
2013	N/A	0	0	N/A
2014	125.0 ppb	2	2	110.0 ppb - 140.0 ppb
2015	172.5 ppb	8	8	140.0 ppb - 200.0 ppb
2016	120.0 ppb	6	4	ND - 210.0 ppb
2017	63.6 ppb	11	6	ND - 130.0 ppb
2018	100.0 ppb	4	3	ND - 160.0 ppb
2019	131.7 ppb	6	5	ND - 190.0 ppb

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-03-12	4417-034-1155	110.0 ppb
2014-03-24	4417-018-0855	140.0 ppb
2015-02-25	4417-005-0840	160.0 ppb
2015-02-25	4417-021-1110	140.0 ppb
2015-02-25	4417-009-1210	170.0 ppb
2015-02-25	4417-008-1235	170.0 ppb
2015-03-25	4417-017-1110	190.0 ppb
2015-04-28	4417-003-0835	190.0 ppb
2015-04-28	4417-015-1025	200.0 ppb
2015-04-28	4417-016-0930	160.0 ppb
2016-01-26	4417-019-1220	210.0 ppb
2016-04-14	4417-020-1040	200.0 ppb
2016-04-25	4417-023-1115	120.0 ppb
2016-07-27	4417-049-0850	ND
2016-10-06	4417-049-1030	ND
2016-12-13	4417-022-1015	190.0 ppb
2017-01-11	4417-049-0920	ND
2017-01-11	4417-018-0840	110.0 ppb
2017-01-31	4417-021-1050	ND
2017-02-14	4417-021-1110	110.0 ppb
2017-02-14	4417-019-1130	ND
2017-04-05	4417-049-0950	ND
2017-04-25	4417-008-0920	ND
2017-04-25	4417-022-1000	120.0 ppb
2017-05-18	4417-022-0950	130.0 ppb
2017-05-18	4417-034-0820	100.0 ppb
2017-05-23	4417-008-1005	130.0 ppb
2018-03-06	4417-017-1115	100.0 ppb
2018-03-06	4417-009-1220	ND
2018-05-09	4417-016-1005	140.0 ppb
2018-05-09	4417-009-1310	160.0 ppb
2019-01-14	4417-023-0840	120.0 ppb
2019-01-14	4417-019-0915	170.0 ppb
2019-04-22	4417-034-1200	150.0 ppb
2019-04-22	4417-021-1010	160.0 ppb
2019-04-22	4417-049-0935	ND
2019-06-18	4417-020-0940	190.0 ppb