Bromodichloromethane

City of Shafter

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane 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

126

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	0.439 ppb	11	4	ND - 2.60 ppb
2015	0.199 ppb	16	3	ND - 1.30 ppb
2016	0.439 ppb	38	19	ND - 1.90 ppb
2017	0.381 ppb	14	2	0.381 ppb
2018	0.667 ppb	21	7	ND - 4.00 ppb
2019	0.577 ppb	26	10	ND - 4.00 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2014-01-21	5806-900-1105	ND
2014-01-21	5806-901-1045	ND
2014-01-21	5806-902-1120	0.510 ppb
2014-01-21	5806-903-1035	ND
2014-04-30	5806-902-1510	ND
2014-06-30	5806-902-1345	2.60 ppb
2014-08-28	5806-902-1336	0.620 ppb
2014-09-12	5806-900-0930	ND
2014-09-12	5806-901-0915	ND
2014-09-12	5806-903-1045	ND
2014-11-25	5806-902-0945	1.10 ppb
2015-01-28	5806-900-1310	0.680 ppb
2015-01-28	5806-901-1115	ND
2015-01-28	5806-902-1250	1.20 ppb
2015-01-28	5806-903-1100	ND
2015-04-30	5806-900-1420	ND
2015-04-30	5806-901-1400	ND
2015-04-30	5806-902-1515	ND
2015-04-30	5806-903-1435	ND
2015-06-30	5806-900-1420	ND
2015-06-30	5806-901-1400	ND
2015-06-30	5806-902-1440	1.30 ppb
2015-06-30	5806-903-1350	ND
2015-09-30	5806-900-1330	ND
2015-09-30	5806-901-1400	ND
2015-09-30	5806-902-1330	ND
2015-09-30	5806-903-1420	ND
2016-01-26	5867-900-1420	0.700 ppb
2016-01-26	5867-901-1325	ND
2016-01-26	5867-902-1355	0.800 ppb
2016-01-26	5867-903-1205	ND
2016-02-23	5867-003-0920	ND
2016-02-23	5867-007-1225	ND
2016-02-23	5867-008-1130	ND
2016-02-23	5867-017-1055	ND
2016-02-23	5867-900-1300	ND
2016-02-23	5867-901-1140	ND
2016-02-23	5867-902-1245	0.700 ppb
2016-02-23	5867-903-1200	ND
2016-03-29	5867-900-1400	0.800 ppb
2016-03-29	5867-901-1210	0.600 ppb
2016-03-29	5867-902-1416	0.600 ppb
2016-03-29	5867-903-1150	0.700 ppb
2016-04-05	5867-021-1355	ND
2016-04-26	5867-900-1543	0.700 ppb
2016-04-26	5867-901-1557	0.800 ppb
2016-04-26	5867-902-1525	1.40 ppb
2016-04-26	5867-903-1610	0.700 ppb
2016-05-31	5867-900-1225	0.700 ppb
2016-05-31	5867-901-1215	0.500 ppb
2016-05-31	5867-902-1345	1.60 ppb
2016-05-31	5867-903-1145	0.500 ppb
2016-06-28	5867-900-1215	0.600 ppb
2016-06-28	5867-901-1235	ND
2016-06-28	5867-902-1335	0.700 ppb
2016-06-28	5867-903-1135	ND
2016-07-26	5867-900-1455	ND
2016-07-26	5867-901-1440	ND
2016-07-26	5867-902-1112	1.70 ppb
2016-07-26	5867-903-1405	ND
2016-10-25	5867-900-1245	ND
2016-10-25	5867-901-1225	ND
2016-10-25	5867-902-1345	1.90 ppb
2016-10-25	5867-903-1145	ND
2016-11-01	5867-004-1120	ND
2017-01-24	5867-021-1110	ND
2017-04-18	5867-900-1420	ND
2017-04-18	5867-901-1410	ND
2017-04-18	5867-902-1230	ND
2017-04-18	5867-903-1350	ND
2017-06-01		0.381 ppb*
2017-07-11	5867-900-1345	ND
2017-07-11	5867-901-1300	ND
2017-07-11	5867-902-1320	ND
2017-07-11	5867-903-1230	ND
2017-10-20	5867-900-1420	4.00 ppb
2017-10-20	5867-901-1435	ND
2017-10-20	5867-902-1450	ND
2017-10-20	5867-903-1505	ND
2018-01-10	5867-900-1100	ND
2018-01-10	5867-901-1130	ND
2018-01-10	5867-902-1235	ND
2018-01-10	5867-903-1150	ND
2018-03-28	5867-021-1335	ND
2018-04-24	5867-021-1115	ND
2018-04-24	5867-900-1300	3.00 ppb
2018-04-24	5867-901-1235	1.000 ppb
2018-04-24	5867-902-0910	2.00 ppb
2018-04-24	5867-903-1220	1.000 ppb
2018-07-24	5867-021-1015	ND
2018-07-24	5867-900-1130	4.00 ppb
2018-07-24	5867-901-1110	ND
2018-07-24	5867-902-1315	2.00 ppb
2018-07-24	5867-903-1200	ND
2018-10-23	5867-021-1140	ND
2018-10-23	5867-900-1310	ND
2018-10-23	5867-901-1330	ND
2018-10-23	5867-902-1240	1.000 ppb
2018-10-23	5867-903-1345	ND
2018-11-08	5806-023-0810	ND
2019-01-22	5867-900-1240	ND
2019-01-22	5867-901-1325	ND
2019-01-22	5867-902-1150	ND
2019-01-22	5867-903-1335	ND
2019-01-23	5806-007-0945	ND
2019-01-23	5806-008-1055	ND
2019-01-23	5806-017-1020	ND
2019-01-23	5806-021-1130	ND
2019-01-23	5806-023-0850	ND
2019-02-26	5867-007-1110	ND
2019-02-26	5867-017-1215	ND
2019-04-23	5867-021-1225	ND
2019-04-25	5867-900-1125	1.000 ppb
2019-04-25	5867-901-1110	1.000 ppb
2019-04-25	5867-902-0945	1.000 ppb
2019-04-25	5867-903-1055	1.000 ppb
2019-06-25	5867-023-1410	ND
2019-07-24	5867-900-1250	4.00 ppb
2019-07-24	5867-901-1225	ND
2019-07-24	5867-902-0825	2.00 ppb
2019-07-24	5867-903-1205	ND
2019-09-16	5806-023-0800	ND
2019-09-27	5867-900-1015	1.000 ppb
2019-09-27	5867-901-0950	1.000 ppb
2019-09-27	5867-902-1108	2.00 ppb
2019-09-27	5867-903-0845	1.000 ppb

* Sample result is taken from the system's CCR report.