Bromodichloromethane
El Dorado ID - Main
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 3.13 ppb | 33 | 33 | 2.00 ppb - 6.60 ppb |
2015 | 3.60 ppb | 33 | 33 | 2.00 ppb - 5.70 ppb |
2016 | 2.61 ppb | 37 | 33 | ND - 4.30 ppb |
2017 | 2.19 ppb | 31 | 31 | 1.10 ppb - 3.10 ppb |
2018 | 2.08 ppb | 42 | 42 | 1.40 ppb - 3.40 ppb |
2019 | 1.82 ppb | 74 | 70 | ND - 3.60 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 |
---|---|---|
2014-02-03 | 9590-004-1020 | 6.60 ppb |
2014-02-11 | 9590-901-1039 | 2.80 ppb |
2014-02-11 | 9590-902-1345 | 3.00 ppb |
2014-02-11 | 9590-903-0916 | 2.20 ppb |
2014-02-11 | 9590-905-1215 | 3.00 ppb |
2014-02-11 | 9590-907-0920 | 2.50 ppb |
2014-02-11 | 9590-908-1220 | 2.20 ppb |
2014-02-11 | 9590-909-1050 | 3.30 ppb |
2014-02-11 | 9590-910-1010 | 2.10 ppb |
2014-05-13 | 9590-907-0920 | 2.60 ppb |
2014-05-13 | 9590-908-1330 | 3.00 ppb |
2014-05-13 | 9590-909-1200 | 3.50 ppb |
2014-05-13 | 9590-910-1010 | 2.80 ppb |
2014-05-14 | 9590-901-1116 | 2.50 ppb |
2014-05-14 | 9590-902-1500 | 4.60 ppb |
2014-05-14 | 9590-903-0950 | 2.00 ppb |
2014-05-14 | 9590-905-1310 | 2.30 ppb |
2014-08-13 | 9590-907-0925 | 2.80 ppb |
2014-08-13 | 9590-908-1325 | 3.30 ppb |
2014-08-13 | 9590-909-1225 | 3.20 ppb |
2014-08-13 | 9590-910-1015 | 3.50 ppb |
2014-08-15 | 9590-901-1105 | 3.80 ppb |
2014-08-15 | 9590-902-1420 | 3.30 ppb |
2014-08-15 | 9590-903-0940 | 2.60 ppb |
2014-08-15 | 9590-905-1305 | 3.70 ppb |
2014-11-10 | 9590-901-1025 | 2.70 ppb |
2014-11-10 | 9590-902-1330 | 3.40 ppb |
2014-11-10 | 9590-903-0920 | 2.60 ppb |
2014-11-10 | 9590-905-1205 | 3.30 ppb |
2014-11-14 | 9590-907-1305 | 3.20 ppb |
2014-11-14 | 9590-908-1345 | 4.00 ppb |
2014-11-14 | 9590-909-1150 | 3.80 ppb |
2014-11-14 | 9590-910-0900 | 3.00 ppb |
2015-02-10 | 9590-901-1107 | 3.80 ppb |
2015-02-10 | 9590-902-1417 | 4.20 ppb |
2015-02-10 | 9590-903-0920 | 3.30 ppb |
2015-02-10 | 9590-905-1249 | 3.60 ppb |
2015-02-11 | 9590-907-0910 | 4.20 ppb |
2015-02-11 | 9590-908-1320 | 4.10 ppb |
2015-02-11 | 9590-909-1035 | 4.60 ppb |
2015-02-11 | 9590-910-1000 | 3.70 ppb |
2015-05-07 | 9590-910-0920 | 2.00 ppb |
2015-05-12 | 9590-901-1025 | 2.80 ppb |
2015-05-12 | 9590-902-1420 | 4.20 ppb |
2015-05-12 | 9590-903-0902 | 2.30 ppb |
2015-05-12 | 9590-905-1235 | 2.60 ppb |
2015-05-12 | 9590-907-0920 | 3.00 ppb |
2015-05-12 | 9590-908-1305 | 2.80 ppb |
2015-05-12 | 9590-909-1050 | 3.60 ppb |
2015-05-12 | 9590-910-1005 | 2.60 ppb |
2015-08-10 | 9590-901-0945 | 3.50 ppb |
2015-08-10 | 9590-902-1350 | 3.60 ppb |
2015-08-10 | 9590-903-0815 | 2.80 ppb |
2015-08-10 | 9590-905-1200 | 5.10 ppb |
2015-08-14 | 9590-907-0750 | 2.60 ppb |
2015-08-14 | 9590-908-1340 | 2.90 ppb |
2015-08-14 | 9590-909-1255 | 4.00 ppb |
2015-08-14 | 9590-910-1200 | 2.40 ppb |
2015-11-09 | 9590-901-1020 | 5.00 ppb |
2015-11-09 | 9590-902-1340 | 4.10 ppb |
2015-11-09 | 9590-903-0915 | 3.90 ppb |
2015-11-09 | 9590-905-1210 | 3.40 ppb |
2015-11-09 | 9590-907-0845 | 3.40 ppb |
2015-11-09 | 9590-908-1050 | 5.70 ppb |
2015-11-09 | 9590-909-1010 | 4.70 ppb |
2015-11-09 | 9590-910-0930 | 4.40 ppb |
2016-02-09 | 9590-905-1300 | 2.90 ppb |
2016-02-09 | 9590-907-0930 | 2.30 ppb |
2016-02-09 | 9590-908-1230 | 3.40 ppb |
2016-02-09 | 9590-909-1150 | 3.90 ppb |
2016-02-09 | 9590-910-1015 | 2.80 ppb |
2016-02-10 | 9590-901-1020 | 3.70 ppb |
2016-02-10 | 9590-902-1250 | 4.30 ppb |
2016-02-10 | 9590-903-0910 | 2.90 ppb |
2016-05-12 | 9590-905-1310 | 3.40 ppb |
2016-05-12 | 9590-907-0900 | 2.70 ppb |
2016-05-12 | 9590-908-1105 | 3.00 ppb |
2016-05-12 | 9590-909-1025 | ND |
2016-05-12 | 9590-910-0945 | 1.60 ppb |
2016-05-13 | 9590-901-1048 | 3.70 ppb |
2016-05-13 | 9590-902-1318 | 3.70 ppb |
2016-05-13 | 9590-903-0940 | 2.80 ppb |
2016-07-12 | 9590-002-1100 | ND |
2016-07-21 | 9590-003-0945 | ND |
2016-07-21 | 9590-004-1240 | ND |
2016-08-09 | 9590-907-0945 | 3.00 ppb |
2016-08-09 | 9590-908-1405 | 2.10 ppb |
2016-08-09 | 9590-909-1120 | 3.00 ppb |
2016-08-09 | 9590-910-1045 | 1.80 ppb |
2016-08-11 | 9590-905-1315 | 3.20 ppb |
2016-08-12 | 9590-901-1055 | 2.80 ppb |
2016-08-12 | 9590-902-1255 | 2.90 ppb |
2016-08-12 | 9590-903-0950 | 2.60 ppb |
2016-09-13 | 9590-909-1300 | 2.20 ppb |
2016-09-26 | 9590-909-1335 | 3.10 ppb |
2016-11-08 | 9590-901-1010 | 2.60 ppb |
2016-11-08 | 9590-902-1148 | 3.10 ppb |
2016-11-08 | 9590-903-0900 | 2.30 ppb |
2016-11-08 | 9590-907-0952 | 2.40 ppb |
2016-11-08 | 9590-908-1330 | 2.80 ppb |
2016-11-08 | 9590-909-1120 | 3.80 ppb |
2016-11-08 | 9590-910-1035 | 2.90 ppb |
2016-11-10 | 9590-905-1145 | 3.00 ppb |
2017-02-07 | 9590-901-1045 | 3.10 ppb |
2017-02-07 | 9590-903-0940 | 2.70 ppb |
2017-02-07 | 9590-905-1340 | 2.80 ppb |
2017-02-08 | 9590-902-0945 | 2.80 ppb |
2017-02-08 | 9590-907-1045 | 2.20 ppb |
2017-02-08 | 9590-908-1158 | 2.50 ppb |
2017-02-08 | 9590-909-1135 | 2.40 ppb |
2017-02-08 | 9590-910-1115 | 2.00 ppb |
2017-05-08 | 9590-901-1125 | 2.50 ppb |
2017-05-08 | 9590-903-1420 | 2.00 ppb |
2017-05-08 | 9590-905-1320 | 2.40 ppb |
2017-05-09 | 9590-907-0915 | 2.20 ppb |
2017-05-09 | 9590-908-1150 | 2.50 ppb |
2017-05-09 | 9590-909-1035 | 2.40 ppb |
2017-05-09 | 9590-910-0955 | 1.60 ppb |
2017-08-07 | 9590-901-1030 | 2.20 ppb |
2017-08-07 | 9590-902-1400 | 2.30 ppb |
2017-08-07 | 9590-903-0900 | 1.80 ppb |
2017-08-07 | 9590-905-1240 | 2.60 ppb |
2017-08-08 | 9590-907-0945 | 1.80 ppb |
2017-08-08 | 9590-908-1300 | 1.70 ppb |
2017-08-08 | 9590-909-1150 | 1.90 ppb |
2017-08-08 | 9590-910-1030 | 1.10 ppb |
2017-11-07 | 9590-901-1030 | 2.20 ppb |
2017-11-07 | 9590-903-0915 | 1.70 ppb |
2017-11-07 | 9590-905-1205 | 2.20 ppb |
2017-11-08 | 9590-902-1355 | 2.40 ppb |
2017-11-08 | 9590-907-0945 | 1.80 ppb |
2017-11-08 | 9590-908-1445 | 2.00 ppb |
2017-11-08 | 9590-909-1410 | 2.10 ppb |
2017-11-08 | 9590-910-1330 | 1.90 ppb |
2018-02-12 | 9590-901-1045 | 3.20 ppb |
2018-02-12 | 9590-902-1335 | 2.20 ppb |
2018-02-12 | 9590-903-0925 | 2.00 ppb |
2018-02-12 | 9590-905-1235 | 1.90 ppb |
2018-02-13 | 9590-907-0920 | 1.40 ppb |
2018-02-13 | 9590-908-1225 | 1.80 ppb |
2018-02-13 | 9590-909-1050 | 1.80 ppb |
2018-02-13 | 9590-910-1002 | 1.40 ppb |
2018-05-07 | 9590-901-1250 | 2.10 ppb |
2018-05-07 | 9590-903-1415 | 1.40 ppb |
2018-05-07 | 9590-905-1043 | 1.60 ppb |
2018-05-07 | 9590-907-1515 | 2.30 ppb |
2018-05-08 | 9590-909-1250 | 2.20 ppb |
2018-05-08 | 9590-910-1330 | 1.40 ppb |
2018-05-09 | 9590-902-1320 | 2.20 ppb |
2018-05-09 | 9590-908-0925 | 1.70 ppb |
2018-08-13 | 9590-901-1135 | 1.70 ppb |
2018-08-13 | 9590-902-1435 | 2.00 ppb |
2018-08-13 | 9590-903-1010 | 1.60 ppb |
2018-08-13 | 9590-905-1315 | 3.40 ppb |
2018-08-14 | 9590-907-0910 | 1.60 ppb |
2018-08-14 | 9590-908-1220 | 1.80 ppb |
2018-08-14 | 9590-909-1030 | 2.20 ppb |
2018-08-14 | 9590-910-0950 | 1.60 ppb |
2018-10-30 | 9590-901-1010 | 1.70 ppb |
2018-10-30 | 9590-902-1325 | 2.20 ppb |
2018-10-30 | 9590-903-0855 | 1.50 ppb |
2018-10-30 | 9590-905-1135 | 2.30 ppb |
2018-10-30 | 9590-907-1430 | 1.80 ppb |
2018-11-13 | 9590-907-0915 | 1.90 ppb |
2018-11-13 | 9590-908-1227 | 2.10 ppb |
2018-11-13 | 9590-909-1010 | 2.50 ppb |
2018-11-13 | 9590-910-1150 | 2.10 ppb |
2018-11-14 | 9590-901-1035 | 1.60 ppb |
2018-11-14 | 9590-902-1418 | 2.10 ppb |
2018-11-14 | 9590-903-0920 | 1.60 ppb |
2018-11-14 | 9590-905-1205 | 2.30 ppb |
2018-12-11 | 9590-901-1000 | 3.40 ppb |
2018-12-11 | 9590-902-1450 | 3.30 ppb |
2018-12-11 | 9590-903-0840 | 2.70 ppb |
2018-12-11 | 9590-905-1335 | 3.20 ppb |
2018-12-12 | 9590-907-0912 | 2.60 ppb |
2019-01-08 | 9590-901-1050 | 3.40 ppb |
2019-01-08 | 9590-902-1415 | 2.80 ppb |
2019-01-08 | 9590-903-0930 | 2.50 ppb |
2019-01-08 | 9590-905-1210 | 2.40 ppb |
2019-01-08 | 9590-907-1510 | 2.60 ppb |
2019-02-15 | 9590-901-1100 | 2.40 ppb |
2019-02-15 | 9590-902-1315 | 2.90 ppb |
2019-02-15 | 9590-903-0930 | 2.10 ppb |
2019-02-15 | 9590-907-0920 | 2.20 ppb |
2019-02-15 | 9590-908-1220 | 3.60 ppb |
2019-02-15 | 9590-909-1012 | 2.70 ppb |
2019-02-15 | 9590-910-1138 | 3.20 ppb |
2019-03-13 | 9590-901-1020 | 1.90 ppb |
2019-03-13 | 9590-902-1350 | 2.10 ppb |
2019-03-13 | 9590-903-0900 | 1.50 ppb |
2019-03-13 | 9590-905-1150 | 1.70 ppb |
2019-03-13 | 9590-907-1445 | 1.60 ppb |
2019-04-09 | 9590-901-1020 | 1.80 ppb |
2019-04-09 | 9590-902-1315 | 1.90 ppb |
2019-04-09 | 9590-903-0905 | 1.40 ppb |
2019-04-09 | 9590-905-1125 | 1.70 ppb |
2019-04-09 | 9590-907-1420 | 1.70 ppb |
2019-05-14 | 9590-901-1050 | 1.70 ppb |
2019-05-14 | 9590-902-1355 | 2.00 ppb |
2019-05-14 | 9590-903-0910 | 1.30 ppb |
2019-05-14 | 9590-905-1200 | 1.60 ppb |
2019-05-14 | 9590-907-0912 | 1.70 ppb |
2019-05-14 | 9590-908-1300 | 1.80 ppb |
2019-05-14 | 9590-909-1035 | 1.90 ppb |
2019-05-14 | 9590-910-1210 | 1.40 ppb |
2019-06-11 | 9590-901-1010 | 1.20 ppb |
2019-06-11 | 9590-902-1252 | 1.90 ppb |
2019-06-11 | 9590-903-0850 | ND |
2019-06-11 | 9590-905-1115 | 1.30 ppb |
2019-06-11 | 9590-907-1347 | 1.40 ppb |
2019-07-02 | 9590-003-0915 | ND |
2019-07-02 | 9590-004-1200 | ND |
2019-07-09 | 9590-901-1035 | 1.40 ppb |
2019-07-09 | 9590-902-1410 | 1.90 ppb |
2019-07-09 | 9590-903-0905 | 1.10 ppb |
2019-07-09 | 9590-905-1205 | 1.40 ppb |
2019-07-09 | 9590-907-1512 | 1.50 ppb |
2019-07-16 | 9590-002-1000 | ND |
2019-08-13 | 9590-901-1035 | 1.50 ppb |
2019-08-13 | 9590-902-1350 | 1.80 ppb |
2019-08-13 | 9590-903-0915 | 1.40 ppb |
2019-08-13 | 9590-905-1150 | 2.10 ppb |
2019-08-13 | 9590-907-0940 | 1.50 ppb |
2019-08-13 | 9590-908-1245 | 1.50 ppb |
2019-08-13 | 9590-909-1030 | 1.30 ppb |
2019-08-13 | 9590-910-1215 | 1.000 ppb |
2019-09-10 | 9590-901-1105 | 1.000 ppb |
2019-09-10 | 9590-902-1355 | 1.40 ppb |
2019-09-10 | 9590-903-0930 | 1.70 ppb |
2019-09-10 | 9590-905-1220 | 2.60 ppb |
2019-09-10 | 9590-907-1500 | 1.000 ppb |
2019-10-08 | 9590-901-1045 | 1.70 ppb |
2019-10-08 | 9590-902-1345 | 1.70 ppb |
2019-10-08 | 9590-903-0920 | 1.20 ppb |
2019-10-08 | 9590-905-1200 | 2.00 ppb |
2019-10-08 | 9590-907-1450 | 1.40 ppb |
2019-11-12 | 9590-901-1040 | 2.30 ppb |
2019-11-12 | 9590-902-1355 | 3.20 ppb |
2019-11-12 | 9590-903-0915 | 2.10 ppb |
2019-11-12 | 9590-905-1205 | 2.40 ppb |
2019-11-12 | 9590-907-1505 | 2.30 ppb |
2019-11-12 | 9590-908-1200 | 1.80 ppb |
2019-11-12 | 9590-909-1015 | 2.60 ppb |
2019-11-12 | 9590-910-1130 | 2.30 ppb |
2019-12-10 | 9590-901-1015 | 2.10 ppb |
2019-12-10 | 9590-902-1350 | 2.80 ppb |
2019-12-10 | 9590-903-0845 | 1.90 ppb |
2019-12-10 | 9590-905-1135 | 2.60 ppb |
2019-12-10 | 9590-907-1455 | 1.90 ppb |