Bromoform
City of La Palma
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 2.13 ppb | 34 | 32 | ND - 4.00 ppb |
2015 | 2.44 ppb | 34 | 27 | ND - 4.90 ppb |
2016 | 2.67 ppb | 33 | 32 | ND - 4.00 ppb |
2017 | 2.36 ppb | 36 | 32 | ND - 7.60 ppb |
2018 | 2.00 ppb | 35 | 32 | ND - 3.00 ppb |
2019 | 1.82 ppb | 18 | 16 | ND - 3.74 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 |
---|---|---|
2014-02-03 | 4417-006-0925 | ND |
2014-02-14 | 3761-801-1150 | 4.00 ppb |
2014-02-14 | 3761-802-1126 | 2.40 ppb |
2014-02-14 | 3761-803-1045 | 2.10 ppb |
2014-02-14 | 3761-804-1108 | 1.70 ppb |
2014-02-14 | 3761-805-1057 | 1.90 ppb |
2014-02-14 | 3761-806-1118 | 1.90 ppb |
2014-02-14 | 3761-807-1030 | 1.90 ppb |
2014-02-14 | 3761-808-1137 | 2.80 ppb |
2014-05-05 | 4417-001-1140 | ND |
2014-05-22 | 3761-801-1110 | 2.50 ppb |
2014-05-22 | 3761-802-1048 | 3.30 ppb |
2014-05-22 | 3761-803-1010 | 1.70 ppb |
2014-05-22 | 3761-804-1028 | 1.80 ppb |
2014-05-22 | 3761-805-1019 | 1.80 ppb |
2014-05-22 | 3761-806-1039 | 1.80 ppb |
2014-05-22 | 3761-807-1000 | 2.20 ppb |
2014-05-22 | 3761-808-1058 | 2.50 ppb |
2014-08-14 | 3761-801-1110 | 1.70 ppb |
2014-08-14 | 3761-802-1057 | 1.90 ppb |
2014-08-14 | 3761-803-1015 | 1.70 ppb |
2014-08-14 | 3761-804-1037 | 1.50 ppb |
2014-08-14 | 3761-805-1025 | 1.60 ppb |
2014-08-14 | 3761-806-1046 | 1.60 ppb |
2014-08-14 | 3761-807-1007 | 2.50 ppb |
2014-08-14 | 3761-808-1120 | 3.20 ppb |
2014-11-11 | 3761-801-1355 | 3.20 ppb |
2014-11-11 | 3761-802-1330 | 2.70 ppb |
2014-11-11 | 3761-803-1241 | 2.10 ppb |
2014-11-11 | 3761-804-1303 | 2.00 ppb |
2014-11-11 | 3761-805-1252 | 1.70 ppb |
2014-11-11 | 3761-806-1314 | 2.20 ppb |
2014-11-11 | 3761-807-1230 | 3.00 ppb |
2014-11-11 | 3761-808-1342 | 3.50 ppb |
2015-02-12 | 3761-801-1200 | 2.80 ppb |
2015-02-12 | 3761-802-1135 | 2.90 ppb |
2015-02-12 | 3761-803-1057 | 2.50 ppb |
2015-02-12 | 3761-804-1120 | 2.60 ppb |
2015-02-12 | 3761-805-1110 | 2.50 ppb |
2015-02-12 | 3761-806-1125 | 2.60 ppb |
2015-02-12 | 3761-807-1045 | 2.20 ppb |
2015-02-12 | 3761-808-1145 | 4.20 ppb |
2015-03-02 | 4417-006-0945 | ND |
2015-05-04 | 4417-001-0835 | ND |
2015-05-07 | 3761-801-0845 | 2.90 ppb |
2015-05-07 | 3761-802-0820 | 3.80 ppb |
2015-05-07 | 3761-803-0736 | ND |
2015-05-07 | 3761-804-0810 | 3.30 ppb |
2015-05-07 | 3761-805-0745 | 1.60 ppb |
2015-05-07 | 3761-806-0756 | ND |
2015-05-07 | 3761-807-0725 | 4.50 ppb |
2015-05-07 | 3761-808-0832 | 3.30 ppb |
2015-08-04 | 3761-801-1200 | 3.50 ppb |
2015-08-04 | 3761-802-1131 | 4.50 ppb |
2015-08-04 | 3761-803-1050 | 2.70 ppb |
2015-08-04 | 3761-804-1112 | 2.80 ppb |
2015-08-04 | 3761-805-1102 | 2.70 ppb |
2015-08-04 | 3761-806-1120 | 4.90 ppb |
2015-08-04 | 3761-807-1040 | 3.00 ppb |
2015-08-04 | 3761-808-1142 | 4.00 ppb |
2015-11-03 | 3761-801-1133 | 2.70 ppb |
2015-11-03 | 3761-802-1142 | 2.70 ppb |
2015-11-03 | 3761-803-1155 | 2.30 ppb |
2015-11-03 | 3761-804-1210 | 2.70 ppb |
2015-11-03 | 3761-805-1222 | 2.70 ppb |
2015-11-03 | 3761-806-1234 | ND |
2015-11-03 | 3761-807-1120 | ND |
2015-11-03 | 3761-808-1245 | ND |
2016-02-01 | 3761-801-0705 | 2.90 ppb |
2016-02-01 | 3761-802-0640 | 3.20 ppb |
2016-02-01 | 3761-803-0535 | 2.50 ppb |
2016-02-01 | 3761-804-0600 | 2.40 ppb |
2016-02-01 | 3761-805-0611 | 2.30 ppb |
2016-02-01 | 3761-806-0550 | 2.40 ppb |
2016-02-01 | 3761-807-0525 | 2.60 ppb |
2016-02-01 | 3761-808-0655 | 3.50 ppb |
2016-02-08 | 4417-006-0850 | ND |
2016-05-02 | 3761-801-0910 | 2.00 ppb |
2016-05-02 | 3761-802-0855 | 2.50 ppb |
2016-05-02 | 3761-803-0800 | 2.60 ppb |
2016-05-02 | 3761-804-0810 | 2.80 ppb |
2016-05-02 | 3761-805-0830 | 3.50 ppb |
2016-05-02 | 3761-806-0822 | 3.40 ppb |
2016-05-02 | 3761-807-0750 | 3.40 ppb |
2016-05-02 | 3761-808-0905 | 3.10 ppb |
2016-08-01 | 3761-801-0749 | 1.80 ppb |
2016-08-01 | 3761-802-0840 | 2.10 ppb |
2016-08-01 | 3761-803-0850 | 2.20 ppb |
2016-08-01 | 3761-804-0800 | 2.00 ppb |
2016-08-01 | 3761-805-0825 | 1.90 ppb |
2016-08-01 | 3761-806-0915 | 1.80 ppb |
2016-08-01 | 3761-807-0735 | 2.10 ppb |
2016-08-01 | 3761-808-0925 | 2.10 ppb |
2016-11-03 | 3761-801-1205 | 2.40 ppb |
2016-11-03 | 3761-802-1230 | 4.00 ppb |
2016-11-03 | 3761-803-1303 | 3.90 ppb |
2016-11-03 | 3761-804-1241 | 2.70 ppb |
2016-11-03 | 3761-805-1252 | 4.00 ppb |
2016-11-03 | 3761-806-1316 | 3.90 ppb |
2016-11-03 | 3761-807-1339 | 2.70 ppb |
2016-11-03 | 3761-808-1221 | 3.30 ppb |
2017-01-30 | 4417-006-1040 | ND |
2017-02-06 | 3761-801-0900 | 1.50 ppb |
2017-02-06 | 3761-802-1005 | 2.00 ppb |
2017-02-06 | 3761-803-1128 | 7.30 ppb |
2017-02-06 | 3761-804-1024 | 3.90 ppb |
2017-02-06 | 3761-805-1103 | 7.60 ppb |
2017-02-06 | 3761-806-1046 | 6.60 ppb |
2017-02-06 | 3761-807-1337 | 6.50 ppb |
2017-02-06 | 3761-808-0942 | 3.80 ppb |
2017-03-06 | 4417-001-1140 | ND |
2017-05-01 | 4417-001-0915 | ND |
2017-05-04 | 3761-801-1117 | 1.80 ppb |
2017-05-04 | 3761-802-1128 | 1.90 ppb |
2017-05-04 | 3761-803-1234 | 2.30 ppb |
2017-05-04 | 3761-804-1205 | 1.70 ppb |
2017-05-04 | 3761-805-1218 | 1.90 ppb |
2017-05-04 | 3761-806-1142 | 1.80 ppb |
2017-05-04 | 3761-807-1054 | 2.60 ppb |
2017-05-04 | 3761-808-1156 | 2.20 ppb |
2017-07-03 | 4417-001-0815 | ND |
2017-08-11 | 3761-801-1115 | 1.80 ppb |
2017-08-11 | 3761-802-1137 | 2.40 ppb |
2017-08-11 | 3761-803-1124 | 2.10 ppb |
2017-08-11 | 3761-804-1148 | 1.50 ppb |
2017-08-11 | 3761-805-1214 | 1.30 ppb |
2017-08-11 | 3761-806-1203 | 1.60 ppb |
2017-08-11 | 3761-807-1245 | 2.60 ppb |
2017-08-11 | 3761-808-1127 | 2.80 ppb |
2017-11-10 | 3761-801-0944 | 1.50 ppb |
2017-11-10 | 3761-802-1004 | 1.80 ppb |
2017-11-10 | 3761-803-1044 | 2.00 ppb |
2017-11-10 | 3761-804-1024 | 1.60 ppb |
2017-11-10 | 3761-805-1033 | 1.40 ppb |
2017-11-10 | 3761-806-1014 | 1.40 ppb |
2017-11-10 | 3761-807-1100 | 1.80 ppb |
2017-11-10 | 3761-808-0955 | 2.10 ppb |
2018-02-01 | 3761-801-1013 | 2.10 ppb |
2018-02-01 | 3761-802-1032 | 2.20 ppb |
2018-02-01 | 3761-803-1115 | 2.10 ppb |
2018-02-01 | 3761-804-1051 | 2.50 ppb |
2018-02-01 | 3761-805-1101 | 2.20 ppb |
2018-02-01 | 3761-806-1042 | 2.10 ppb |
2018-02-01 | 3761-807-1134 | 2.20 ppb |
2018-02-01 | 3761-808-1023 | 2.50 ppb |
2018-02-05 | 4417-006-0835 | ND |
2018-03-05 | 4417-001-0835 | ND |
2018-04-02 | 4417-001-0825 | ND |
2018-05-03 | 3761-801-0945 | 2.40 ppb |
2018-05-03 | 3761-802-1009 | 3.00 ppb |
2018-05-03 | 3761-803-1044 | 2.50 ppb |
2018-05-03 | 3761-804-1020 | 2.50 ppb |
2018-05-03 | 3761-805-1100 | 2.30 ppb |
2018-05-03 | 3761-806-1032 | 2.30 ppb |
2018-05-03 | 3761-807-1140 | 2.80 ppb |
2018-05-03 | 3761-808-0958 | 2.70 ppb |
2018-08-02 | 3761-801-1157 | 1.90 ppb |
2018-08-02 | 3761-802-1228 | 2.30 ppb |
2018-08-02 | 3761-803-1310 | 2.20 ppb |
2018-08-02 | 3761-804-1256 | 2.00 ppb |
2018-08-02 | 3761-805-1328 | 2.00 ppb |
2018-08-02 | 3761-806-1243 | 1.90 ppb |
2018-08-02 | 3761-807-1354 | 2.10 ppb |
2018-08-02 | 3761-808-1214 | 2.20 ppb |
2018-11-02 | 3761-801-0948 | 2.10 ppb |
2018-11-02 | 3761-802-1013 | 2.20 ppb |
2018-11-02 | 3761-803-1025 | 1.60 ppb |
2018-11-02 | 3761-804-1107 | 1.50 ppb |
2018-11-02 | 3761-805-1055 | 1.40 ppb |
2018-11-02 | 3761-806-1041 | 1.40 ppb |
2018-11-02 | 3761-807-1120 | 2.60 ppb |
2018-11-02 | 3761-808-0959 | 2.20 ppb |
2019-02-04 | 4417-001-0820 | ND |
2019-02-04 | 4417-006-0840 | ND |
2019-05-03 | 9469-801-0850 | 1.95 ppb |
2019-05-03 | 9469-802-0915 | 2.55 ppb |
2019-05-03 | 9469-803-0935 | 1.66 ppb |
2019-05-03 | 9469-804-1000 | 1.42 ppb |
2019-05-03 | 9469-805-1025 | 1.48 ppb |
2019-05-03 | 9469-806-1045 | 1.50 ppb |
2019-05-03 | 9469-807-0835 | 2.01 ppb |
2019-05-03 | 9469-808-1115 | 2.60 ppb |
2019-11-01 | 9469-801-0945 | 3.02 ppb |
2019-11-01 | 9469-802-1005 | 1.93 ppb |
2019-11-01 | 9469-803-1030 | 2.01 ppb |
2019-11-01 | 9469-804-1050 | 1.72 ppb |
2019-11-01 | 9469-805-1115 | 1.70 ppb |
2019-11-01 | 9469-806-1140 | 1.74 ppb |
2019-11-01 | 9469-807-0915 | 1.74 ppb |
2019-11-01 | 9469-808-0850 | 3.74 ppb |