Bromoform

City of Greenville

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

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	5.20 ppb	16	12	ND - 21.8 ppb
2015	9.28 ppb	16	11	ND - 82.9 ppb
2016	5.03 ppb	16	11	ND - 30.4 ppb
2017	6.06 ppb	16	7	ND - 49.4 ppb
2018	N/A	0	0	N/A
2019	10.7 ppb	16	14	ND - 33.4 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform 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
2014-03-10	140311-040TH	ND
2014-03-10	140311-039TH	12.5 ppb
2014-03-10	140311-036TH	1.74 ppb
2014-03-10	140311-035TH	4.71 ppb
2014-06-11	140612-010TH	2.94 ppb
2014-06-11	140612-009TH	ND
2014-06-11	140612-002TH	9.91 ppb
2014-06-11	140612-001TH	11.5 ppb
2014-09-08	140909-023TH	1.13 ppb
2014-09-08	140909-004TH	21.8 ppb
2014-09-08	140909-005TH	1.35 ppb
2014-09-08	140909-022TH	1.04 ppb
2014-12-08	141209-004TH	ND
2014-12-08	141209-003TH	ND
2014-12-08	141209-002TH	5.78 ppb
2014-12-08	141209-001TH	8.76 ppb
2015-03-11	150312-011TH	5.42 ppb
2015-03-11	150312-012TH	2.04 ppb
2015-03-11	150312-018TH	ND
2015-03-11	150312-017TH	ND
2015-06-08	150609-014TH	ND
2015-06-08	150609-013TH	82.9 ppb
2015-06-08	150609-008TH	1.97 ppb
2015-06-08	150609-007TH	ND
2015-09-14	150915-020TH	ND
2015-09-14	150915-019TH	1.02 ppb
2015-09-14	150915-018TH	1.60 ppb
2015-09-14	150915-017TH	17.1 ppb
2015-12-07	151208-016TH	4.78 ppb
2015-12-07	151208-013TH	24.2 ppb
2015-12-07	151208-014TH	4.67 ppb
2015-12-07	151208-015TH	2.78 ppb
2016-03-14	160315-010TH	2.16 ppb
2016-03-14	160315-009TH	ND
2016-03-14	160315-008TH	10.00 ppb
2016-03-14	160315-007TH	30.4 ppb
2016-06-06	160607-015TH	1.04 ppb
2016-06-06	160607-018TH	10.6 ppb
2016-06-06	160607-017TH	ND
2016-06-06	160607-016TH	1.16 ppb
2016-09-06	160907-008TH	3.21 ppb
2016-09-06	160907-007TH	ND
2016-09-06	160907-002TH	ND
2016-09-06	160907-001TH	1.53 ppb
2016-12-13	161214-016TH	ND
2016-12-13	161214-015TH	1.59 ppb
2016-12-13	161214-014TH	2.71 ppb
2016-12-13	161214-013TH	16.0 ppb
2017-03-06	170307-004TH	ND
2017-03-06	170307-001TH	ND
2017-03-06	170307-002TH	ND
2017-03-06	170307-003TH	ND
2017-06-07	170608-010TH	ND
2017-06-07	170608-009TH	49.4 ppb
2017-06-07	170608-008TH	ND
2017-06-07	170608-007TH	ND
2017-09-05	170906-017TH	1.77 ppb
2017-09-05	170906-018TH	1.50 ppb
2017-09-05	170906-024TH	ND
2017-09-05	170906-023TH	1.91 ppb
2017-12-04	171205-008TH	13.5 ppb
2017-12-04	171205-007TH	10.9 ppb
2017-12-04	171205-004TH	ND
2017-12-04	171205-003TH	17.9 ppb
2019-03-12	190313-004TH	15.4 ppb
2019-03-12	190313-003TH	9.00 ppb
2019-03-12	190313-002TH	ND
2019-03-12	190313-001TH	20.5 ppb
2019-06-10	190611-004TH	ND
2019-06-10	190611-001TH	2.78 ppb
2019-06-10	190611-002TH	18.0 ppb
2019-06-10	190611-003TH	33.4 ppb
2019-09-09	190910-008TH	10.8 ppb
2019-09-09	190910-007TH	3.95 ppb
2019-09-09	190910-006TH	1.89 ppb
2019-09-09	190910-005TH	2.08 ppb
2019-12-17	191218-016TH	29.3 ppb
2019-12-17	191218-019TH	12.0 ppb
2019-12-17	191218-018TH	2.58 ppb
2019-12-17	191218-017TH	9.95 ppb