Dibromochloromethane

Natchitoches 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

218

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	0.558 ppb	34	22	ND - 1.30 ppb
2015	0.171 ppb	56	28	ND - 0.530 ppb
2016	0.233 ppb	32	22	ND - 0.550 ppb
2017	ND	32	0	ND
2018	0.0381 ppb	32	4	ND - 0.310 ppb
2019	ND	32	0	ND

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
2014-03-06	680-99232-6	ND
2014-03-06	680-99232-7	0.640 ppb
2014-03-06	680-99232-8	0.440 ppb
2014-03-06	680-99232-9	0.540 ppb
2014-03-06	680-99232-6	ND
2014-03-06	680-99232-7	0.640 ppb
2014-03-06	680-99232-8	0.440 ppb
2014-03-06	680-99232-9	0.540 ppb
2014-04-14	AD90602	ND
2014-04-14	AD90602	ND
2014-06-05	680-102053-1	ND
2014-06-05	680-102053-2	ND
2014-06-05	680-102053-3	ND
2014-06-05	680-102053-4	ND
2014-06-05	680-102053-1	ND
2014-06-05	680-102053-2	ND
2014-06-05	680-102053-3	ND
2014-06-05	680-102053-4	ND
2014-09-04	680-104963-13	0.810 ppb
2014-09-04	680-104963-14	0.810 ppb
2014-09-04	680-104963-15	0.810 ppb
2014-09-04	680-104963-16	0.840 ppb
2014-09-04	680-104963-13	0.810 ppb
2014-09-04	680-104963-14	0.810 ppb
2014-09-04	680-104963-15	0.810 ppb
2014-09-04	680-104963-16	0.840 ppb
2014-12-02	680-107780-10	1.10 ppb
2014-12-02	680-107780-7	1.10 ppb
2014-12-02	680-107780-8	1.10 ppb
2014-12-02	680-107780-9	1.30 ppb
2014-12-02	680-107780-10	1.10 ppb
2014-12-02	680-107780-7	1.10 ppb
2014-12-02	680-107780-8	1.10 ppb
2014-12-02	680-107780-9	1.30 ppb
2015-03-04	680-110515-10	0.510 ppb
2015-03-04	680-110515-7	0.500 ppb
2015-03-04	680-110515-8	0.530 ppb
2015-03-04	680-110515-9	0.520 ppb
2015-03-04	680-110515-10	0.510 ppb
2015-03-04	680-110515-7	0.500 ppb
2015-03-04	680-110515-8	0.530 ppb
2015-03-04	680-110515-9	0.520 ppb
2015-06-05	680-113468-1	ND
2015-06-05	680-113468-2	ND
2015-06-05	680-113468-3	ND
2015-06-05	680-113468-4	ND
2015-06-05	680-113468-1	ND
2015-06-05	680-113468-2	ND
2015-06-05	680-113468-3	ND
2015-06-05	680-113468-4	ND
2015-06-26	680-114023-1	ND
2015-06-26	680-114023-2	ND
2015-06-26	680-114023-3	ND
2015-06-26	680-114023-4	ND
2015-06-26	680-114023-1	ND
2015-06-26	680-114023-2	ND
2015-06-26	680-114023-3	ND
2015-06-26	680-114023-4	ND
2015-06-30	680-114108-1	ND
2015-06-30	680-114108-2	ND
2015-06-30	680-114108-3	ND
2015-06-30	680-114108-4	ND
2015-06-30	680-114108-1	ND
2015-06-30	680-114108-2	ND
2015-06-30	680-114108-3	ND
2015-06-30	680-114108-4	ND
2015-09-30	680-117346-1	0.290 ppb
2015-09-30	680-117346-2	0.310 ppb
2015-09-30	680-117346-3	0.320 ppb
2015-09-30	680-117346-4	0.300 ppb
2015-09-30	680-117346-1	0.290 ppb
2015-09-30	680-117346-2	0.310 ppb
2015-09-30	680-117346-3	0.320 ppb
2015-09-30	680-117346-4	0.300 ppb
2015-12-01	680-119845-1	ND
2015-12-01	680-119845-2	ND
2015-12-01	680-119845-3	0.340 ppb
2015-12-01	680-119845-4	0.350 ppb
2015-12-01	680-119845-1	ND
2015-12-01	680-119845-2	ND
2015-12-01	680-119845-3	0.340 ppb
2015-12-01	680-119845-4	0.350 ppb
2015-12-31	680-120573-1	0.220 ppb
2015-12-31	680-120573-2	0.190 ppb
2015-12-31	680-120573-3	0.270 ppb
2015-12-31	680-120573-4	0.130 ppb
2015-12-31	680-120573-1	0.220 ppb
2015-12-31	680-120573-2	0.190 ppb
2015-12-31	680-120573-3	0.270 ppb
2015-12-31	680-120573-4	0.130 ppb
2016-03-02	680-122490-4	ND
2016-03-02	680-122490-5	ND
2016-03-02	680-122490-6	ND
2016-03-02	680-122490-7	ND
2016-03-02	680-122490-4	ND
2016-03-02	680-122490-5	ND
2016-03-02	680-122490-6	ND
2016-03-02	680-122490-7	ND
2016-06-08	680-126620-1	ND
2016-06-08	680-126620-2	0.250 ppb
2016-06-08	680-126620-3	0.180 ppb
2016-06-08	680-126620-4	0.190 ppb
2016-06-08	680-126620-1	ND
2016-06-08	680-126620-2	0.250 ppb
2016-06-08	680-126620-3	0.180 ppb
2016-06-08	680-126620-4	0.190 ppb
2016-09-08	680-129861-1	0.320 ppb
2016-09-08	680-129861-2	0.540 ppb
2016-09-08	680-129861-3	0.370 ppb
2016-09-08	680-129861-4	0.550 ppb
2016-09-08	680-129861-1	0.320 ppb
2016-09-08	680-129861-2	0.540 ppb
2016-09-08	680-129861-3	0.370 ppb
2016-09-08	680-129861-4	0.550 ppb
2016-12-06	680-132836-10	0.330 ppb
2016-12-06	680-132836-11	0.320 ppb
2016-12-06	680-132836-12	0.330 ppb
2016-12-06	680-132836-13	0.350 ppb
2016-12-06	680-132836-10	0.330 ppb
2016-12-06	680-132836-11	0.320 ppb
2016-12-06	680-132836-12	0.330 ppb
2016-12-06	680-132836-13	0.350 ppb
2017-03-02	35298741021	ND
2017-03-02	35298741022	ND
2017-03-02	35298741023	ND
2017-03-02	35298741024	ND
2017-03-02	35298741021	ND
2017-03-02	35298741022	ND
2017-03-02	35298741023	ND
2017-03-02	35298741024	ND
2017-06-27	35321385014	ND
2017-06-27	35321385014	ND
2017-07-21	35325892009	ND
2017-07-21	35325892010	ND
2017-07-21	35325892011	ND
2017-07-21	35325892009	ND
2017-07-21	35325892010	ND
2017-07-21	35325892011	ND
2017-09-14	35335848013	ND
2017-09-14	35335848014	ND
2017-09-14	35335848015	ND
2017-09-14	35335848016	ND
2017-09-14	35335848013	ND
2017-09-14	35335848014	ND
2017-09-14	35335848015	ND
2017-09-14	35335848016	ND
2017-12-14	35363575001	ND
2017-12-14	35363575002	ND
2017-12-14	35363575003	ND
2017-12-14	35363575004	ND
2017-12-14	35363575001	ND
2017-12-14	35363575002	ND
2017-12-14	35363575003	ND
2017-12-14	35363575004	ND
2018-03-15	35380704001	ND
2018-03-15	35380704002	ND
2018-03-15	35380704003	ND
2018-03-15	35380704004	ND
2018-03-15	35380704001	ND
2018-03-15	35380704002	ND
2018-03-15	35380704003	ND
2018-03-15	35380704004	ND
2018-06-25	35401074001	ND
2018-06-25	35401074002	ND
2018-06-25	35401074003	ND
2018-06-25	35401074004	ND
2018-06-25	35401074001	ND
2018-06-25	35401074002	ND
2018-06-25	35401074003	ND
2018-06-25	35401074004	ND
2018-09-18	35418776002	ND
2018-09-18	35418776004	ND
2018-09-18	35418776002	ND
2018-09-18	35418776004	ND
2018-09-26	35420661001	ND
2018-09-26	35420661002	ND
2018-09-26	35420661001	ND
2018-09-26	35420661002	ND
2018-12-17	35438424001	ND
2018-12-17	35438424002	0.310 ppb
2018-12-17	35438424003	ND
2018-12-17	35438424004	0.300 ppb
2018-12-17	35438424001	ND
2018-12-17	35438424002	0.310 ppb
2018-12-17	35438424003	ND
2018-12-17	35438424004	0.300 ppb
2019-03-07	35453400001	ND
2019-03-07	35453400002	ND
2019-03-07	35453400003	ND
2019-03-07	35453400004	ND
2019-03-07	35453400001	ND
2019-03-07	35453400002	ND
2019-03-07	35453400003	ND
2019-03-07	35453400004	ND
2019-06-24	35478413001	ND
2019-06-24	35478413002	ND
2019-06-24	35478413003	ND
2019-06-24	35478413004	ND
2019-06-24	35478413001	ND
2019-06-24	35478413002	ND
2019-06-24	35478413003	ND
2019-06-24	35478413004	ND
2019-09-12	35497561001	ND
2019-09-12	35497561002	ND
2019-09-12	35497561003	ND
2019-09-12	35497561004	ND
2019-09-12	35497561001	ND
2019-09-12	35497561002	ND
2019-09-12	35497561003	ND
2019-09-12	35497561004	ND
2019-12-17	35520110001	ND
2019-12-17	35520110002	ND
2019-12-17	35520110003	ND
2019-12-17	35520110004	ND
2019-12-17	35520110001	ND
2019-12-17	35520110002	ND
2019-12-17	35520110003	ND
2019-12-17	35520110004	ND