Bromoform
California Water Service Company - Palos Verde
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 |
---|---|---|---|---|
2014 | 2.16 ppb | 32 | 32 | 1.94 ppb - 2.50 ppb |
2015 | 2.86 ppb | 32 | 32 | 2.30 ppb - 3.53 ppb |
2016 | 3.01 ppb | 32 | 32 | 2.47 ppb - 4.15 ppb |
2017 | 6.88 ppb | 31 | 31 | 2.34 ppb - 12.0 ppb |
2018 | 5.38 ppb | 32 | 32 | 3.11 ppb - 9.80 ppb |
2019 | 4.75 ppb | 32 | 30 | ND - 11.9 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 |
---|---|---|
2014-02-18 | 5701-800-1052 | 2.07 ppb |
2014-02-18 | 5701-801-1105 | 1.98 ppb |
2014-02-18 | 5701-802-1335 | 2.08 ppb |
2014-02-18 | 5701-803-1535 | 2.14 ppb |
2014-02-18 | 5701-804-1455 | 2.20 ppb |
2014-02-18 | 5701-805-1305 | 1.94 ppb |
2014-02-18 | 5701-806-1545 | 1.99 ppb |
2014-02-18 | 5701-807-1148 | 2.14 ppb |
2014-05-21 | 5701-800-1120 | 2.23 ppb |
2014-05-21 | 5701-801-1202 | 2.26 ppb |
2014-05-21 | 5701-802-1307 | 2.24 ppb |
2014-05-21 | 5701-803-1252 | 2.45 ppb |
2014-05-21 | 5701-804-1330 | 2.25 ppb |
2014-05-21 | 5701-805-1225 | 2.50 ppb |
2014-05-21 | 5701-806-1300 | 2.37 ppb |
2014-05-21 | 5701-807-1210 | 2.43 ppb |
2014-08-19 | 5701-800-1150 | 2.03 ppb |
2014-08-19 | 5701-801-1135 | 2.22 ppb |
2014-08-19 | 5701-802-1030 | 2.08 ppb |
2014-08-19 | 5701-803-0945 | 2.12 ppb |
2014-08-19 | 5701-804-0930 | 1.98 ppb |
2014-08-19 | 5701-805-1045 | 2.18 ppb |
2014-08-19 | 5701-806-1010 | 2.06 ppb |
2014-08-19 | 5701-807-1110 | 2.03 ppb |
2014-11-18 | 5701-800-1140 | 2.15 ppb |
2014-11-18 | 5701-801-1150 | 2.28 ppb |
2014-11-18 | 5701-802-1110 | 2.06 ppb |
2014-11-18 | 5701-803-1220 | 2.08 ppb |
2014-11-18 | 5701-804-0944 | 2.03 ppb |
2014-11-18 | 5701-805-1030 | 2.43 ppb |
2014-11-18 | 5701-806-1010 | 2.01 ppb |
2014-11-18 | 5701-807-1050 | 2.02 ppb |
2015-02-18 | 5701-800-0829 | 2.81 ppb |
2015-02-18 | 5701-801-0829 | 2.47 ppb |
2015-02-18 | 5701-802-0829 | 2.41 ppb |
2015-02-18 | 5701-803-0829 | 2.55 ppb |
2015-02-18 | 5701-804-0829 | 2.57 ppb |
2015-02-18 | 5701-805-0829 | 2.39 ppb |
2015-02-18 | 5701-806-0829 | 2.35 ppb |
2015-02-18 | 5701-807-0829 | 2.30 ppb |
2015-05-19 | 5701-800-0700 | 3.53 ppb |
2015-05-19 | 5701-801-0700 | 3.50 ppb |
2015-05-19 | 5701-802-0700 | 3.32 ppb |
2015-05-19 | 5701-803-0700 | 3.33 ppb |
2015-05-19 | 5701-804-0700 | 3.30 ppb |
2015-05-19 | 5701-805-0700 | 3.36 ppb |
2015-05-19 | 5701-806-0700 | 3.51 ppb |
2015-05-19 | 5701-807-0700 | 3.31 ppb |
2015-08-17 | 5701-800-0824 | 2.86 ppb |
2015-08-17 | 5701-801-0824 | 2.65 ppb |
2015-08-17 | 5701-802-0824 | 2.66 ppb |
2015-08-17 | 5701-803-0824 | 2.77 ppb |
2015-08-17 | 5701-804-0824 | 2.54 ppb |
2015-08-17 | 5701-805-0824 | 2.41 ppb |
2015-08-17 | 5701-806-0824 | 2.65 ppb |
2015-08-17 | 5701-807-0824 | 2.82 ppb |
2015-11-19 | 5810-800-1032 | 3.20 ppb |
2015-11-19 | 5810-801-1044 | 3.00 ppb |
2015-11-19 | 5810-802-1145 | 2.60 ppb |
2015-11-19 | 5810-803-1312 | 2.60 ppb |
2015-11-19 | 5810-804-1211 | 2.90 ppb |
2015-11-19 | 5810-805-1130 | 2.80 ppb |
2015-11-19 | 5810-806-1334 | 3.10 ppb |
2015-11-19 | 5810-807-1110 | 3.10 ppb |
2016-02-17 | 5701-800-0714 | 4.15 ppb |
2016-02-17 | 5701-801-0714 | 2.48 ppb |
2016-02-17 | 5701-802-0714 | 2.52 ppb |
2016-02-17 | 5701-803-0714 | 2.56 ppb |
2016-02-17 | 5701-804-0714 | 2.67 ppb |
2016-02-17 | 5701-805-0714 | 2.83 ppb |
2016-02-17 | 5701-806-0714 | 2.71 ppb |
2016-02-17 | 5701-807-0714 | 2.65 ppb |
2016-05-17 | 5701-800-0659 | 2.98 ppb |
2016-05-17 | 5701-801-0659 | 2.47 ppb |
2016-05-17 | 5701-802-0659 | 3.27 ppb |
2016-05-17 | 5701-803-0659 | 2.74 ppb |
2016-05-17 | 5701-804-0820 | 2.72 ppb |
2016-05-17 | 5701-805-0820 | 2.63 ppb |
2016-05-17 | 5701-806-0820 | 2.76 ppb |
2016-05-17 | 5701-807-0820 | 2.55 ppb |
2016-08-15 | 5810-800-1024 | 4.00 ppb |
2016-08-15 | 5810-801-1045 | 3.40 ppb |
2016-08-15 | 5810-802-1155 | 3.70 ppb |
2016-08-15 | 5810-803-1243 | 3.80 ppb |
2016-08-15 | 5810-804-1313 | 3.30 ppb |
2016-08-15 | 5810-805-1140 | 3.50 ppb |
2016-08-15 | 5810-806-1258 | 3.90 ppb |
2016-08-15 | 5810-807-1115 | 3.60 ppb |
2016-11-21 | 5701-800-0823 | 3.35 ppb |
2016-11-21 | 5701-801-0823 | 2.65 ppb |
2016-11-21 | 5701-802-0823 | 2.53 ppb |
2016-11-21 | 5701-803-0823 | 2.49 ppb |
2016-11-21 | 5701-804-0823 | 2.80 ppb |
2016-11-21 | 5701-805-0823 | 3.08 ppb |
2016-11-21 | 5701-806-0823 | 2.49 ppb |
2016-11-21 | 5701-807-0823 | 3.00 ppb |
2017-02-21 | 5701-804-1259 | 4.29 ppb |
2017-02-21 | 5701-805-1230 | 4.08 ppb |
2017-02-21 | 5701-806-1450 | 5.32 ppb |
2017-02-21 | 5701-807-1141 | 3.80 ppb |
2017-02-22 | 5701-800-0826 | 4.93 ppb |
2017-02-22 | 5701-801-0826 | 2.34 ppb |
2017-02-22 | 5701-803-0826 | 4.19 ppb |
2017-05-16 | 5701-800-0909 | 4.76 ppb |
2017-05-16 | 5701-801-0909 | 7.32 ppb |
2017-05-16 | 5701-802-0909 | 10.3 ppb |
2017-05-16 | 5701-803-0909 | 10.3 ppb |
2017-05-16 | 5701-804-0909 | 8.50 ppb |
2017-05-16 | 5701-805-0909 | 9.46 ppb |
2017-05-16 | 5701-806-0909 | 4.05 ppb |
2017-05-16 | 5701-807-0909 | 12.0 ppb |
2017-08-21 | 5810-800-1039 | 7.60 ppb |
2017-08-21 | 5810-801-1022 | 9.60 ppb |
2017-08-21 | 5810-802-1146 | 9.80 ppb |
2017-08-21 | 5810-803-0955 | 10.00 ppb |
2017-08-21 | 5810-804-0916 | 10.00 ppb |
2017-08-21 | 5810-805-1311 | 9.40 ppb |
2017-08-21 | 5810-806-1017 | 11.0 ppb |
2017-08-21 | 5810-807-1341 | 9.80 ppb |
2017-11-20 | 5810-800-0920 | 4.60 ppb |
2017-11-20 | 5810-801-1000 | 4.70 ppb |
2017-11-20 | 5810-802-0940 | 4.70 ppb |
2017-11-20 | 5810-803-1020 | 5.00 ppb |
2017-11-20 | 5810-804-1100 | 5.00 ppb |
2017-11-20 | 5810-805-1130 | 5.30 ppb |
2017-11-20 | 5810-806-1040 | 5.10 ppb |
2017-11-20 | 5810-807-1155 | 6.00 ppb |
2018-02-22 | 5810-800-0932 | 9.40 ppb |
2018-02-22 | 5810-801-0945 | 7.50 ppb |
2018-02-22 | 5810-802-1103 | 9.80 ppb |
2018-02-22 | 5810-803-1122 | 8.20 ppb |
2018-02-22 | 5810-804-1510 | 8.70 ppb |
2018-02-22 | 5810-805-1040 | 9.50 ppb |
2018-02-22 | 5810-806-1415 | 8.60 ppb |
2018-02-22 | 5810-807-1016 | 9.50 ppb |
2018-05-21 | 5701-800-0832 | 3.32 ppb |
2018-05-21 | 5701-801-0830 | 3.11 ppb |
2018-05-21 | 5701-802-0830 | 5.10 ppb |
2018-05-21 | 5701-803-0830 | 4.93 ppb |
2018-05-21 | 5701-804-0830 | 4.83 ppb |
2018-05-21 | 5701-805-0830 | 5.08 ppb |
2018-05-21 | 5701-806-0830 | 4.67 ppb |
2018-05-21 | 5701-807-0830 | 3.12 ppb |
2018-08-23 | 5701-800-0714 | 3.32 ppb |
2018-08-23 | 5701-801-0714 | 3.42 ppb |
2018-08-23 | 5701-802-0714 | 3.53 ppb |
2018-08-23 | 5701-803-0714 | 3.20 ppb |
2018-08-23 | 5701-804-0714 | 3.21 ppb |
2018-08-23 | 5701-805-0714 | 3.81 ppb |
2018-08-23 | 5701-806-0714 | 3.85 ppb |
2018-08-23 | 5701-807-0714 | 4.02 ppb |
2018-11-19 | 5701-800-0848 | 5.44 ppb |
2018-11-19 | 5701-801-0848 | 4.96 ppb |
2018-11-19 | 5701-802-0848 | 4.66 ppb |
2018-11-19 | 5701-803-0848 | 4.72 ppb |
2018-11-19 | 5701-804-0848 | 4.39 ppb |
2018-11-19 | 5701-805-0848 | 4.64 ppb |
2018-11-19 | 5701-806-0848 | 4.53 ppb |
2018-11-19 | 5701-807-0848 | 5.04 ppb |
2019-02-21 | 5701-800-0724 | 2.65 ppb |
2019-02-21 | 5701-801-0724 | 2.71 ppb |
2019-02-21 | 5701-802-0724 | 2.68 ppb |
2019-02-21 | 5701-803-0724 | 2.71 ppb |
2019-02-21 | 5701-804-0724 | 2.81 ppb |
2019-02-21 | 5701-805-0724 | 2.77 ppb |
2019-02-21 | 5701-806-0724 | 2.82 ppb |
2019-02-21 | 5701-807-0724 | 2.79 ppb |
2019-05-23 | 5701-800-0803 | 5.54 ppb |
2019-05-23 | 5701-801-0803 | 7.53 ppb |
2019-05-23 | 5701-802-0803 | 6.17 ppb |
2019-05-23 | 5701-803-0803 | 6.94 ppb |
2019-05-23 | 5701-804-0803 | 6.54 ppb |
2019-05-23 | 5701-805-0803 | ND |
2019-05-23 | 5701-806-0803 | 5.94 ppb |
2019-05-23 | 5701-807-0803 | 6.74 ppb |
2019-08-22 | 5701-800-1108 | 3.87 ppb |
2019-08-22 | 5701-801-1135 | 11.9 ppb |
2019-08-22 | 5701-802-1327 | 7.03 ppb |
2019-08-22 | 5701-803-1442 | 5.61 ppb |
2019-08-23 | 5701-804-1415 | 2.85 ppb |
2019-08-23 | 5701-805-1309 | 6.07 ppb |
2019-08-23 | 5701-806-1502 | 8.07 ppb |
2019-08-23 | 5701-807-1253 | 6.10 ppb |
2019-11-18 | 5701-800-0921 | 5.07 ppb |
2019-11-18 | 5701-801-0935 | 4.52 ppb |
2019-11-18 | 5701-802-1109 | 4.88 ppb |
2019-11-18 | 5701-803-1219 | 4.78 ppb |
2019-11-18 | 5701-804-1200 | 4.72 ppb |
2019-11-18 | 5701-805-1040 | ND |
2019-11-18 | 5701-806-1237 | 4.54 ppb |
2019-11-18 | 5701-807-1009 | 4.67 ppb |