Bromoform

City of La Habra

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

209

Samples

Samples exceeding legal limit (MCL)

141

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	7.55 ppb	34	20	ND - 62.0 ppb
2015	2.14 ppb	35	24	ND - 11.8 ppb
2016	7.13 ppb	35	24	ND - 37.5 ppb
2017	3.19 ppb	35	20	ND - 15.3 ppb
2018	9.97 ppb	35	24	ND - 46.3 ppb
2019	14.0 ppb	35	29	ND - 77.1 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
2014-01-17	3761-028-1141	ND
2014-01-17	3761-031-1107	62.0 ppb
2014-02-13	3761-801-1414	19.1 ppb
2014-02-13	3761-802-1328	6.10 ppb
2014-02-13	3761-803-1341	13.7 ppb
2014-02-13	3761-804-1425	18.9 ppb
2014-02-13	3761-805-1403	25.6 ppb
2014-02-13	3761-806-1441	1.80 ppb
2014-02-13	3761-807-1237	8.80 ppb
2014-02-13	3761-808-1520	17.6 ppb
2014-02-21	3761-031-1128	ND
2014-04-14	3761-028-1412	ND
2014-04-16	3761-031-1250	ND
2014-05-15	3761-801-1021	2.10 ppb
2014-05-15	3761-802-0954	ND
2014-05-15	3761-803-1000	ND
2014-05-15	3761-804-1029	2.00 ppb
2014-05-15	3761-805-1008	ND
2014-05-15	3761-806-0945	ND
2014-05-15	3761-807-0936	ND
2014-05-15	3761-808-0926	4.80 ppb
2014-07-21	3761-028-1429	ND
2014-07-21	3761-031-1508	ND
2014-08-14	3761-801-1025	9.20 ppb
2014-08-14	3761-802-1059	12.1 ppb
2014-08-14	3761-803-1045	12.4 ppb
2014-08-14	3761-804-1034	6.40 ppb
2014-08-14	3761-805-1052	9.10 ppb
2014-08-14	3761-806-1005	6.10 ppb
2014-08-14	3761-807-1013	13.2 ppb
2014-08-14	3761-808-0955	5.60 ppb
2014-09-04	3761-004-1124	ND
2014-09-04	3761-028-1151	ND
2014-09-04	3761-031-1055	ND
2015-02-13	3761-801-1242	1.50 ppb
2015-02-13	3761-802-1220	ND
2015-02-13	3761-803-1227	ND
2015-02-13	3761-804-1250	1.50 ppb
2015-02-13	3761-805-1233	ND
2015-02-13	3761-806-1303	ND
2015-02-13	3761-807-1315	ND
2015-02-13	3761-808-1330	6.80 ppb
2015-05-14	3761-801-1230	2.30 ppb
2015-05-14	3761-802-1030	3.00 ppb
2015-05-14	3761-803-1115	2.40 ppb
2015-05-14	3761-804-1215	2.00 ppb
2015-05-14	3761-805-1130	3.90 ppb
2015-05-14	3761-806-1145	2.90 ppb
2015-05-14	3761-807-1045	7.20 ppb
2015-05-14	3761-808-1030	3.00 ppb
2015-08-14	3761-801-1150	1.80 ppb
2015-08-14	3761-802-1225	2.30 ppb
2015-08-14	3761-803-1240	3.10 ppb
2015-08-14	3761-804-1205	1.70 ppb
2015-08-14	3761-805-1305	4.60 ppb
2015-08-14	3761-806-1320	3.10 ppb
2015-08-14	3761-807-1135	ND
2015-08-14	3761-808-1120	ND
2015-09-21	3761-004-1400	ND
2015-09-21	3761-028-1515	ND
2015-09-21	3761-031-1450	ND
2015-11-09	3761-801-1354	1.90 ppb
2015-11-09	3761-802-1318	2.40 ppb
2015-11-09	3761-803-1329	ND
2015-11-09	3761-804-1403	1.30 ppb
2015-11-09	3761-805-1344	1.40 ppb
2015-11-09	3761-806-1418	1.50 ppb
2015-11-09	3761-807-1250	11.8 ppb
2015-11-09	3761-808-1322	1.60 ppb
2016-02-08	3761-801-1236	3.50 ppb
2016-02-08	3761-802-1317	2.10 ppb
2016-02-08	3761-803-1312	2.40 ppb
2016-02-08	3761-804-1243	3.10 ppb
2016-02-08	3761-805-1256	4.70 ppb
2016-02-08	3761-806-1330	1.70 ppb
2016-02-08	3761-807-1339	9.10 ppb
2016-02-08	3761-808-1121	5.50 ppb
2016-05-09	3761-801-1425	14.2 ppb
2016-05-09	3761-802-1400	12.5 ppb
2016-05-09	3761-803-1415	17.8 ppb
2016-05-09	3761-804-1455	18.6 ppb
2016-05-09	3761-805-1430	37.5 ppb
2016-05-09	3761-806-1505	7.40 ppb
2016-05-09	3761-807-1300	25.4 ppb
2016-05-09	3761-808-1140	32.5 ppb
2016-08-08	3761-801-1353	7.80 ppb
2016-08-08	3761-802-1311	5.00 ppb
2016-08-08	3761-803-1320	5.40 ppb
2016-08-08	3761-804-1410	8.60 ppb
2016-08-08	3761-805-1329	ND
2016-08-08	3761-806-1419	9.80 ppb
2016-08-08	3761-807-1122	6.00 ppb
2016-08-08	3761-808-1220	4.10 ppb
2016-09-16	3761-028-1125	ND
2016-09-16	3761-031-1100	ND
2016-10-04	3761-004-1530	ND
2016-11-09	3761-801-1030	ND
2016-11-09	3761-802-1102	ND
2016-11-09	3761-803-1054	ND
2016-11-09	3761-804-1035	ND
2016-11-09	3761-805-1042	ND
2016-11-09	3761-806-1115	ND
2016-11-09	3761-807-1020	ND
2016-11-09	3761-808-1134	4.80 ppb
2017-02-13	3761-801-1326	ND
2017-02-13	3761-802-1148	ND
2017-02-13	3761-803-1302	ND
2017-02-13	3761-804-1336	ND
2017-02-13	3761-805-1315	ND
2017-02-13	3761-806-1357	ND
2017-02-13	3761-807-1213	ND
2017-02-13	3761-808-1105	1.70 ppb
2017-05-09	3761-801-1038	2.20 ppb
2017-05-09	3761-802-1112	1.20 ppb
2017-05-09	3761-803-1103	1.40 ppb
2017-05-09	3761-804-1047	2.40 ppb
2017-05-09	3761-805-1054	1.80 ppb
2017-05-09	3761-806-1022	1.50 ppb
2017-05-09	3761-807-1029	12.0 ppb
2017-05-09	3761-808-1010	11.0 ppb
2017-08-07	3761-801-1400	3.10 ppb
2017-08-07	3761-802-1310	8.40 ppb
2017-08-07	3761-803-1316	15.3 ppb
2017-08-07	3761-804-1413	4.60 ppb
2017-08-07	3761-805-1330	8.50 ppb
2017-08-07	3761-806-1428	5.00 ppb
2017-08-07	3761-807-1102	9.80 ppb
2017-08-07	3761-808-1151	9.50 ppb
2017-09-25	3761-028-1145	ND
2017-09-27	3761-031-1435	ND
2017-11-13	3761-801-1304	2.80 ppb
2017-11-13	3761-802-1221	ND
2017-11-13	3761-803-1228	ND
2017-11-13	3761-804-1320	5.30 ppb
2017-11-13	3761-805-1248	ND
2017-11-13	3761-806-1343	ND
2017-11-13	3761-807-1043	ND
2017-11-13	3761-808-1127	4.20 ppb
2017-11-17	3761-004-1152	ND
2018-02-12	3761-801-1306	18.0 ppb
2018-02-12	3761-802-1222	ND
2018-02-12	3761-803-1234	2.50 ppb
2018-02-12	3761-804-1315	19.9 ppb
2018-02-12	3761-805-1249	14.1 ppb
2018-02-12	3761-806-1336	6.40 ppb
2018-02-12	3761-807-1148	ND
2018-02-12	3761-808-1351	6.10 ppb
2018-05-07	3761-801-1226	37.1 ppb
2018-05-07	3761-802-1242	10.9 ppb
2018-05-07	3761-803-1256	15.2 ppb
2018-05-07	3761-804-1337	46.3 ppb
2018-05-07	3761-805-1311	18.8 ppb
2018-05-07	3761-806-1406	2.90 ppb
2018-05-07	3761-807-1212	4.80 ppb
2018-05-07	3761-808-1101	9.60 ppb
2018-08-16	3761-801-0944	36.8 ppb
2018-08-16	3761-802-1018	12.9 ppb
2018-08-16	3761-803-1010	13.6 ppb
2018-08-16	3761-804-0955	37.4 ppb
2018-08-16	3761-805-1003	7.10 ppb
2018-08-16	3761-806-0934	6.10 ppb
2018-08-16	3761-807-0926	11.3 ppb
2018-08-16	3761-808-0913	8.40 ppb
2018-09-14	3761-004-1140	ND
2018-09-14	3761-028-1111	ND
2018-09-14	3761-031-1042	ND
2018-11-05	3761-801-1305	ND
2018-11-05	3761-802-1409	ND
2018-11-05	3761-803-1353	ND
2018-11-05	3761-804-1320	ND
2018-11-05	3761-805-1329	1.20 ppb
2018-11-05	3761-806-1216	ND
2018-11-05	3761-807-1229	ND
2018-11-05	3761-808-1050	1.40 ppb
2019-02-04	3761-801-1403	2.80 ppb
2019-02-04	3761-802-1252	ND
2019-02-04	3761-803-1308	3.60 ppb
2019-02-04	3761-804-1151	1.90 ppb
2019-02-04	3761-805-1336	7.70 ppb
2019-02-04	3761-806-1152	ND
2019-02-04	3761-807-1430	ND
2019-02-04	3761-808-1033	2.60 ppb
2019-05-08	3761-801-1100	22.5 ppb
2019-05-08	3761-802-1022	4.80 ppb
2019-05-08	3761-803-1031	7.70 ppb
2019-05-08	3761-804-1048	21.7 ppb
2019-05-08	3761-805-1040	10.8 ppb
2019-05-08	3761-806-1003	2.90 ppb
2019-05-08	3761-807-1012	4.60 ppb
2019-05-08	3761-808-0951	4.60 ppb
2019-08-05	3761-801-1354	31.4 ppb
2019-08-05	3761-802-1240	5.50 ppb
2019-08-05	3761-803-1256	8.90 ppb
2019-08-05	3761-804-1343	29.4 ppb
2019-08-05	3761-805-1304	16.3 ppb
2019-08-05	3761-806-1133	4.00 ppb
2019-08-05	3761-807-1421	7.80 ppb
2019-08-05	3761-808-1433	3.50 ppb
2019-09-11	3761-004-1140	ND
2019-09-11	3761-028-1025	ND
2019-09-11	3761-031-1100	ND
2019-11-04	3761-801-1307	77.1 ppb
2019-11-04	3761-802-1412	18.4 ppb
2019-11-04	3761-803-1400	37.5 ppb
2019-11-04	3761-804-1322	69.4 ppb
2019-11-04	3761-805-1340	49.3 ppb
2019-11-04	3761-806-1213	13.4 ppb
2019-11-04	3761-807-1227	13.7 ppb
2019-11-04	3761-808-1040	6.40 ppb