Dibromochloromethane

Morgan City 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

202

Samples

Samples exceeding legal limit (MCL)

140

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	0.690 ppb	34	22	ND - 1.42 ppb
2015	1.00 ppb	40	32	ND - 2.20 ppb
2016	1.36 ppb	32	32	0.600 ppb - 2.23 ppb
2017	1.37 ppb	32	26	ND - 2.80 ppb
2018	0.938 ppb	32	16	ND - 2.70 ppb
2019	0.692 ppb	32	12	ND - 2.60 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
2014-02-03	AD88684	1.05 ppb
2014-02-03	AD88684	1.05 ppb
2014-02-04	201402050184	1.31 ppb
2014-02-04	201402050185	1.08 ppb
2014-02-04	201402050186	1.25 ppb
2014-02-04	201402050184	1.31 ppb
2014-02-04	201402050185	1.08 ppb
2014-02-04	201402050186	1.25 ppb
2014-02-07	201402050487	1.42 ppb
2014-02-07	201402050487	1.42 ppb
2014-05-05	201405060574	ND
2014-05-05	201405060575	ND
2014-05-05	201405060576	ND
2014-05-05	201405060577	ND
2014-05-05	201405060574	ND
2014-05-05	201405060575	ND
2014-05-05	201405060576	ND
2014-05-05	201405060577	ND
2014-08-04	201408050723	ND
2014-08-04	201408050724	0.507 ppb
2014-08-04	201408050725	0.570 ppb
2014-08-04	20148050722	ND
2014-08-04	201408050723	ND
2014-08-04	201408050724	0.507 ppb
2014-08-04	201408050725	0.570 ppb
2014-08-04	20148050722	ND
2014-11-03	201411040231	1.03 ppb
2014-11-03	201411040232	1.08 ppb
2014-11-03	201411040233	1.23 ppb
2014-11-03	201411040234	1.20 ppb
2014-11-03	201411040231	1.03 ppb
2014-11-03	201411040232	1.08 ppb
2014-11-03	201411040233	1.23 ppb
2014-11-03	201411040234	1.20 ppb
2015-02-02	201502030260	1.30 ppb
2015-02-02	201502030261	1.10 ppb
2015-02-02	201502030262	1.40 ppb
2015-02-02	201502030263	1.60 ppb
2015-02-02	201502030260	1.30 ppb
2015-02-02	201502030261	1.10 ppb
2015-02-02	201502030262	1.40 ppb
2015-02-02	201502030263	1.60 ppb
2015-05-04	201505050427	ND
2015-05-04	201505050428	ND
2015-05-04	201505050429	ND
2015-05-04	201505050430	ND
2015-05-04	201505050427	ND
2015-05-04	201505050428	ND
2015-05-04	201505050429	ND
2015-05-04	201505050430	ND
2015-08-03	201508040505	0.751 ppb
2015-08-03	201508040505	0.750 ppb
2015-08-03	201508040506	0.816 ppb
2015-08-03	201508040506	0.640 ppb
2015-08-03	201508040507	0.789 ppb
2015-08-03	201508040507	0.790 ppb
2015-08-03	201508040508	0.820 ppb
2015-08-03	201508040508	0.816 ppb
2015-08-03	201508040505	0.751 ppb
2015-08-03	201508040505	0.750 ppb
2015-08-03	201508040506	0.816 ppb
2015-08-03	201508040506	0.640 ppb
2015-08-03	201508040507	0.789 ppb
2015-08-03	201508040507	0.790 ppb
2015-08-03	201508040508	0.820 ppb
2015-08-03	201508040508	0.816 ppb
2015-11-02	201511040680	2.10 ppb
2015-11-02	201511040681	2.20 ppb
2015-11-02	201511040682	2.00 ppb
2015-11-02	201511040683	2.20 ppb
2015-11-02	201511040680	2.10 ppb
2015-11-02	201511040681	2.20 ppb
2015-11-02	201511040682	2.00 ppb
2015-11-02	201511040683	2.20 ppb
2016-02-01	201602030509	1.000 ppb
2016-02-01	201602030510	0.980 ppb
2016-02-01	201602030511	0.990 ppb
2016-02-01	201602030512	1.10 ppb
2016-02-01	201602030509	1.000 ppb
2016-02-01	201602030510	0.980 ppb
2016-02-01	201602030511	0.990 ppb
2016-02-01	201602030512	1.10 ppb
2016-05-02	201605030440	0.700 ppb
2016-05-02	201605030441	0.600 ppb
2016-05-02	201605030442	0.810 ppb
2016-05-02	201605030443	0.690 ppb
2016-05-02	201605030440	0.700 ppb
2016-05-02	201605030441	0.600 ppb
2016-05-02	201605030442	0.810 ppb
2016-05-02	201605030443	0.690 ppb
2016-08-08	201608090739	1.78 ppb
2016-08-08	201608090740	1.77 ppb
2016-08-08	201608090741	1.72 ppb
2016-08-08	201608090742	2.23 ppb
2016-08-08	201608090739	1.78 ppb
2016-08-08	201608090740	1.77 ppb
2016-08-08	201608090741	1.72 ppb
2016-08-08	201608090742	2.23 ppb
2016-11-02	201611030443	1.87 ppb
2016-11-02	201611030444	1.72 ppb
2016-11-02	201611030445	1.79 ppb
2016-11-02	201611030446	2.01 ppb
2016-11-02	201611030443	1.87 ppb
2016-11-02	201611030444	1.72 ppb
2016-11-02	201611030445	1.79 ppb
2016-11-02	201611030446	2.01 ppb
2017-02-17	35296225001	2.50 ppb
2017-02-17	35296225002	ND
2017-02-17	35296225003	2.80 ppb
2017-02-17	35296225004	2.30 ppb
2017-02-17	35296225001	2.50 ppb
2017-02-17	35296225002	ND
2017-02-17	35296225003	2.80 ppb
2017-02-17	35296225004	2.30 ppb
2017-05-11	35311983001	1.60 ppb
2017-05-11	35311983002	1.70 ppb
2017-05-11	35311983003	ND
2017-05-11	35311983004	1.60 ppb
2017-05-11	35311983001	1.60 ppb
2017-05-11	35311983002	1.70 ppb
2017-05-11	35311983003	ND
2017-05-11	35311983004	1.60 ppb
2017-08-02	35327845001	1.70 ppb
2017-08-02	35327845002	1.60 ppb
2017-08-02	35327845003	1.70 ppb
2017-08-02	35327845004	1.60 ppb
2017-08-02	35327845001	1.70 ppb
2017-08-02	35327845002	1.60 ppb
2017-08-02	35327845003	1.70 ppb
2017-08-02	35327845004	1.60 ppb
2017-11-09	35347543001	0.890 ppb
2017-11-09	35347543002	0.850 ppb
2017-11-09	35347543003	ND
2017-11-09	35347543004	1.10 ppb
2017-11-09	35347543001	0.890 ppb
2017-11-09	35347543002	0.850 ppb
2017-11-09	35347543003	ND
2017-11-09	35347543004	1.10 ppb
2018-02-02	35371883001	2.70 ppb
2018-02-02	35371883002	2.50 ppb
2018-02-02	35371883003	2.70 ppb
2018-02-02	35371883004	2.70 ppb
2018-02-02	35371883001	2.70 ppb
2018-02-02	35371883002	2.50 ppb
2018-02-02	35371883003	2.70 ppb
2018-02-02	35371883004	2.70 ppb
2018-05-01	35389382001	ND
2018-05-01	35389382002	ND
2018-05-01	35389382003	ND
2018-05-01	35389382004	ND
2018-05-01	35389382001	ND
2018-05-01	35389382002	ND
2018-05-01	35389382003	ND
2018-05-01	35389382004	ND
2018-08-03	35408659001	ND
2018-08-03	35408659002	ND
2018-08-03	35408659003	ND
2018-08-03	35408659004	ND
2018-08-03	35408659001	ND
2018-08-03	35408659002	ND
2018-08-03	35408659003	ND
2018-08-03	35408659004	ND
2018-11-02	35428791001	1.10 ppb
2018-11-02	35428791002	1.10 ppb
2018-11-02	35428791003	1.10 ppb
2018-11-02	35428791004	1.10 ppb
2018-11-02	35428791001	1.10 ppb
2018-11-02	35428791002	1.10 ppb
2018-11-02	35428791003	1.10 ppb
2018-11-02	35428791004	1.10 ppb
2019-02-01	35445751001	ND
2019-02-01	35445751002	0.780 ppb
2019-02-01	35445751003	0.790 ppb
2019-02-01	35445751004	ND
2019-02-01	35445751001	ND
2019-02-01	35445751002	0.780 ppb
2019-02-01	35445751003	0.790 ppb
2019-02-01	35445751004	ND
2019-05-03	35466105001	ND
2019-05-03	35466105002	ND
2019-05-03	35466105003	ND
2019-05-03	35466105004	ND
2019-05-03	35466105001	ND
2019-05-03	35466105002	ND
2019-05-03	35466105003	ND
2019-05-03	35466105004	ND
2019-08-02	35487284001	ND
2019-08-02	35487284002	ND
2019-08-02	35487284003	ND
2019-08-02	35487284004	ND
2019-08-02	35487284001	ND
2019-08-02	35487284002	ND
2019-08-02	35487284003	ND
2019-08-02	35487284004	ND
2019-11-05	35510536001	1.90 ppb
2019-11-05	35510536002	2.50 ppb
2019-11-05	35510536003	2.50 ppb
2019-11-05	35510536004	2.60 ppb
2019-11-05	35510536001	1.90 ppb
2019-11-05	35510536002	2.50 ppb
2019-11-05	35510536003	2.50 ppb
2019-11-05	35510536004	2.60 ppb