Dibromochloromethane

Denville Twp Water Department

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

152

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	0.294 ppb	31	9	ND - 1.40 ppb
2015	0.338 ppb	29	8	ND - 2.30 ppb
2016	0.589 ppb	27	14	ND - 1.50 ppb
2017	0.383 ppb	23	9	ND - 2.00 ppb
2018	0.914 ppb	21	16	ND - 2.00 ppb
2019	0.762 ppb	21	12	ND - 3.80 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
2014-01-14	340114078	ND
2014-02-04	340204107	ND
2014-03-04	340305032	1.000 ppb
2014-03-04	340305030	1.000 ppb
2014-03-04	340305026	0.800 ppb
2014-03-04	340305028	ND
2014-03-04	340304141	ND
2014-04-01	340401154.3	ND
2014-04-01	340401155.3	ND
2014-04-01	340401156	ND
2014-04-08	340408177.3	ND
2014-05-06	340506268	ND
2014-06-03	340604013	0.600 ppb
2014-06-03	340604011	1.000 ppb
2014-06-03	340604007	ND
2014-06-03	340604009	ND
2014-06-03	340603164	ND
2014-07-08	340708128	ND
2014-08-05	340805140	ND
2014-09-02	340903007	ND
2014-09-02	340903005	1.20 ppb
2014-09-02	340903009	ND
2014-09-02	340903011	ND
2014-09-02	340902046	ND
2014-10-07	341007147	ND
2014-11-04	341105113	ND
2014-12-02	341202101	1.000 ppb
2014-12-02	341202099	1.40 ppb
2014-12-02	341202103	1.10 ppb
2014-12-02	341202105	ND
2014-12-02	341202051	ND
2015-01-06	350106098	ND
2015-02-03	350203044	ND
2015-03-03	350303148	0.700 ppb
2015-03-03	350303146	ND
2015-03-03	350303150	ND
2015-03-03	350303152	ND
2015-03-03	350303143	ND
2015-04-07	350407163	ND
2015-04-07	350407162	ND
2015-05-05	350505117	ND
2015-06-02	350602103	0.900 ppb
2015-06-02	350602101	ND
2015-06-02	350602097	ND
2015-06-02	350602099	ND
2015-06-02	350602105	ND
2015-07-07	350707068	ND
2015-08-04	350804127	ND
2015-09-01	350901126	1.40 ppb
2015-09-01	350901124	1.10 ppb
2015-09-01	350901128	ND
2015-09-01	350901130	ND
2015-09-01	350901123	ND
2015-10-06	351006106	ND
2015-11-03	351103088	ND
2015-12-01	351201099	1.000 ppb
2015-12-01	351201097	1.40 ppb
2015-12-01	351201101	1.000 ppb
2015-12-01	351201103	2.30 ppb
2015-12-01	351201112	ND
2016-01-05	360105079	ND
2016-02-02	360202155	ND
2016-03-01	360301148	1.000 ppb
2016-03-01	360301146	1.000 ppb
2016-03-01	360301142	1.40 ppb
2016-03-01	360301144	1.20 ppb
2016-03-01	360301150	ND
2016-04-05	360405191	ND
2016-04-05	360405190	ND
2016-05-03	360503107	ND
2016-06-01	360601014	1.000 ppb
2016-06-01	360601012	1.20 ppb
2016-06-01	360601008	ND
2016-06-01	360601010	1.50 ppb
2016-06-07	360607137	ND
2016-07-05	360705111	ND
2016-08-02	360802117	ND
2016-09-01	360901016	1.40 ppb
2016-09-01	360901014	1.30 ppb
2016-09-01	360901010	ND
2016-09-01	360901012	0.500 ppb
2016-09-06	360906082	ND
2016-10-04	361004130	ND
2016-12-01	361201020	1.10 ppb
2016-12-01	361201018	1.20 ppb
2016-12-01	361201022	1.40 ppb
2016-12-01	361201024	0.700 ppb
2017-01-03	370103163	ND
2017-03-01	370301012	0.800 ppb
2017-03-01	370301010	ND
2017-03-01	370301006	ND
2017-03-01	370301008	ND
2017-04-04	370404083	ND
2017-04-18	370418287	ND
2017-05-02	370502084.3	ND
2017-05-02	370502085.3	ND
2017-06-01	370601017	1.000 ppb
2017-06-01	370601015	1.10 ppb
2017-06-01	370601019	ND
2017-06-01	370601021	ND
2017-07-11	370711125	ND
2017-09-01	370901008	0.900 ppb
2017-09-01	370901006	2.00 ppb
2017-09-01	370901010	0.500 ppb
2017-09-01	370901012	ND
2017-10-03	371003116	ND
2017-12-01	371201012	0.900 ppb
2017-12-01	371201010	1.000 ppb
2017-12-01	371201014	ND
2017-12-01	371201016	0.600 ppb
2018-02-06	380206072	ND
2018-03-02	380302008	1.10 ppb
2018-03-02	380302006	1.10 ppb
2018-03-02	380302002	1.000 ppb
2018-03-02	380302004	0.900 ppb
2018-04-03	380403121	ND
2018-04-03	380403120	ND
2018-06-04	380604011	1.40 ppb
2018-06-04	380604009	2.00 ppb
2018-06-04	380604013	1.80 ppb
2018-06-04	380604015	1.30 ppb
2018-07-03	380703181	ND
2018-09-04	380904054	1.10 ppb
2018-09-04	380904052	1.10 ppb
2018-09-04	380904048	0.600 ppb
2018-09-04	380904050	1.80 ppb
2018-10-02	381002158	ND
2018-12-03	381203008	1.60 ppb
2018-12-03	381203006	1.000 ppb
2018-12-03	381203010	0.800 ppb
2018-12-03	381203012	0.600 ppb
2019-01-08	390108142	ND
2019-03-05	390305164	1.10 ppb
2019-03-05	390305162	0.600 ppb
2019-03-05	390305158	ND
2019-03-05	390305160	2.00 ppb
2019-04-02	390402240	ND
2019-04-02	390402238	ND
2019-06-04	390604150	0.900 ppb
2019-06-04	390604148	0.900 ppb
2019-06-04	390604152	ND
2019-06-04	390604154	1.90 ppb
2019-07-02	390702171	ND
2019-09-04	390904007.1A	1.20 ppb
2019-09-04	390904006.1A	0.600 ppb
2019-09-04	390904008.1A	ND
2019-09-04	390904009.1A	3.80 ppb
2019-10-01	391001220	ND
2019-12-04	391204011	1.20 ppb
2019-12-04	391204009	0.800 ppb
2019-12-04	391204013	ND
2019-12-04	391204015	1.000 ppb