Dibromochloromethane
City of Newport Beach
Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane 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 | 7.93 ppb | 38 | 32 | ND - 14.0 ppb |
2015 | 7.47 ppb | 36 | 32 | ND - 15.0 ppb |
2016 | 4.97 ppb | 39 | 32 | ND - 16.0 ppb |
2017 | 3.70 ppb | 40 | 32 | ND - 9.60 ppb |
2018 | 5.01 ppb | 42 | 32 | ND - 9.60 ppb |
2019 | 3.75 ppb | 44 | 32 | ND - 9.10 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.1 ppb
The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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 |
---|---|---|
2014-01-08 | 2706-801-1520 | 8.80 ppb |
2014-01-08 | 2706-802-1458 | 8.60 ppb |
2014-01-08 | 2706-803-1447 | 9.10 ppb |
2014-01-08 | 2706-804-1345 | 8.70 ppb |
2014-01-08 | 2706-805-1430 | 9.00 ppb |
2014-01-08 | 2706-806-1400 | 8.90 ppb |
2014-01-08 | 2706-807-1611 | 8.30 ppb |
2014-01-08 | 2706-808-1415 | 9.00 ppb |
2014-03-03 | 4417-004-0810 | ND |
2014-03-03 | 4417-005-0830 | ND |
2014-03-04 | 4417-003-0810 | ND |
2014-04-09 | 2706-801-1427 | 11.0 ppb |
2014-04-09 | 2706-802-1410 | 10.00 ppb |
2014-04-09 | 2706-803-1355 | 12.0 ppb |
2014-04-09 | 2706-804-1250 | 11.0 ppb |
2014-04-09 | 2706-805-1340 | 9.70 ppb |
2014-04-09 | 2706-806-1305 | 10.00 ppb |
2014-04-09 | 2706-807-1507 | 10.00 ppb |
2014-04-09 | 2706-808-1320 | 10.00 ppb |
2014-05-15 | 4417-003-0840 | ND |
2014-06-18 | 4417-002-1300 | ND |
2014-07-09 | 2706-801-1555 | 14.0 ppb |
2014-07-09 | 2706-802-1540 | 14.0 ppb |
2014-07-09 | 2706-803-1530 | 13.0 ppb |
2014-07-09 | 2706-804-1420 | 14.0 ppb |
2014-07-09 | 2706-805-1514 | 13.0 ppb |
2014-07-09 | 2706-806-1443 | 14.0 ppb |
2014-07-09 | 2706-807-1640 | 13.0 ppb |
2014-07-09 | 2706-808-1458 | 13.0 ppb |
2014-08-21 | 4417-003-0855 | ND |
2014-10-08 | 2706-801-1310 | 4.30 ppb |
2014-10-08 | 2706-802-1255 | 4.20 ppb |
2014-10-08 | 2706-803-1240 | 10.00 ppb |
2014-10-08 | 2706-804-1155 | 4.00 ppb |
2014-10-08 | 2706-805-1225 | 4.00 ppb |
2014-10-08 | 2706-806-1205 | 4.10 ppb |
2014-10-08 | 2706-807-1355 | 4.30 ppb |
2014-10-08 | 2706-808-1215 | 4.20 ppb |
2015-01-14 | 2706-801-1337 | 6.40 ppb |
2015-01-14 | 2706-802-1323 | 6.20 ppb |
2015-01-14 | 2706-803-1315 | 5.90 ppb |
2015-01-14 | 2706-804-1215 | 6.40 ppb |
2015-01-14 | 2706-805-1300 | 6.40 ppb |
2015-01-14 | 2706-806-1228 | 5.90 ppb |
2015-01-14 | 2706-807-1425 | 6.10 ppb |
2015-01-14 | 2706-808-1245 | 6.60 ppb |
2015-03-02 | 4417-004-0815 | ND |
2015-03-02 | 4417-005-0835 | ND |
2015-04-08 | 2706-801-1518 | 15.0 ppb |
2015-04-08 | 2706-802-1505 | 14.0 ppb |
2015-04-08 | 2706-803-1457 | 14.0 ppb |
2015-04-08 | 2706-804-1405 | 14.0 ppb |
2015-04-08 | 2706-805-1442 | 15.0 ppb |
2015-04-08 | 2706-806-1415 | 15.0 ppb |
2015-04-08 | 2706-807-1602 | 15.0 ppb |
2015-04-08 | 2706-808-1430 | 12.0 ppb |
2015-05-04 | 4417-002-1050 | ND |
2015-05-04 | 4417-003-1115 | ND |
2015-07-08 | 2706-801-1423 | 2.90 ppb |
2015-07-08 | 2706-802-1358 | 3.00 ppb |
2015-07-08 | 2706-803-1410 | 2.90 ppb |
2015-07-08 | 2706-804-1300 | 2.90 ppb |
2015-07-08 | 2706-805-1341 | 2.70 ppb |
2015-07-08 | 2706-806-1313 | 3.00 ppb |
2015-07-08 | 2706-807-1506 | 3.00 ppb |
2015-07-08 | 2706-808-1325 | 3.10 ppb |
2015-10-14 | 2706-801-1350 | 10.00 ppb |
2015-10-14 | 2706-802-1330 | 10.00 ppb |
2015-10-14 | 2706-803-1340 | 11.0 ppb |
2015-10-14 | 2706-804-1250 | 11.0 ppb |
2015-10-14 | 2706-805-1320 | 9.10 ppb |
2015-10-14 | 2706-806-1300 | 9.70 ppb |
2015-10-14 | 2706-807-1430 | 9.80 ppb |
2015-10-14 | 2706-808-1310 | 11.0 ppb |
2016-01-13 | 2706-801-1540 | 11.0 ppb |
2016-01-13 | 2706-802-1526 | 9.80 ppb |
2016-01-13 | 2706-803-1516 | 10.00 ppb |
2016-01-13 | 2706-804-1410 | 11.0 ppb |
2016-01-13 | 2706-805-1500 | 9.90 ppb |
2016-01-13 | 2706-806-1424 | 9.50 ppb |
2016-01-13 | 2706-807-1620 | 9.90 ppb |
2016-01-13 | 2706-808-1442 | 10.00 ppb |
2016-02-29 | 4417-004-1045 | ND |
2016-02-29 | 4417-005-0805 | ND |
2016-04-13 | 2706-801-1345 | 1.40 ppb |
2016-04-13 | 2706-802-1330 | 1.40 ppb |
2016-04-13 | 2706-803-1322 | 1.40 ppb |
2016-04-13 | 2706-804-1214 | 1.50 ppb |
2016-04-13 | 2706-805-1305 | 1.30 ppb |
2016-04-13 | 2706-806-1242 | 1.50 ppb |
2016-04-13 | 2706-807-1425 | 1.60 ppb |
2016-04-13 | 2706-808-1253 | 1.40 ppb |
2016-05-09 | 4417-002-0840 | ND |
2016-05-09 | 4417-003-0850 | ND |
2016-06-16 | 4417-004-1100 | ND |
2016-06-16 | 4417-004-1115 | ND |
2016-07-13 | 2706-801-1612 | 3.80 ppb |
2016-07-13 | 2706-802-1600 | 14.0 ppb |
2016-07-13 | 2706-803-1553 | 4.30 ppb |
2016-07-13 | 2706-804-1500 | 16.0 ppb |
2016-07-13 | 2706-805-1538 | 8.20 ppb |
2016-07-13 | 2706-806-1515 | 14.0 ppb |
2016-07-13 | 2706-807-1648 | 8.10 ppb |
2016-07-13 | 2706-808-1525 | 16.0 ppb |
2016-10-12 | 2706-801-1325 | 1.90 ppb |
2016-10-12 | 2706-802-1312 | 2.30 ppb |
2016-10-12 | 2706-803-1305 | 1.80 ppb |
2016-10-12 | 2706-804-1210 | 2.10 ppb |
2016-10-12 | 2706-805-1250 | 2.00 ppb |
2016-10-12 | 2706-806-1220 | 2.40 ppb |
2016-10-12 | 2706-807-1417 | 2.10 ppb |
2016-10-12 | 2706-808-1235 | 2.40 ppb |
2016-11-01 | 4417-005-0835 | ND |
2017-01-11 | 2706-801-1330 | 1.60 ppb |
2017-01-11 | 2706-802-1317 | 1.70 ppb |
2017-01-11 | 2706-803-1310 | 9.60 ppb |
2017-01-11 | 2706-804-1218 | 1.80 ppb |
2017-01-11 | 2706-805-1250 | 1.70 ppb |
2017-01-11 | 2706-806-1228 | 1.50 ppb |
2017-01-11 | 2706-807-1410 | 1.50 ppb |
2017-01-11 | 2706-808-1238 | 1.90 ppb |
2017-02-09 | 4417-004-0950 | ND |
2017-02-09 | 4417-005-0930 | ND |
2017-03-22 | 4417-004-1105 | ND |
2017-03-22 | 4417-004-1120 | ND |
2017-03-22 | 4417-005-1125 | ND |
2017-03-22 | 4417-005-1140 | ND |
2017-04-12 | 2706-801-1438 | 4.40 ppb |
2017-04-12 | 2706-802-1416 | 4.20 ppb |
2017-04-12 | 2706-803-1427 | 5.50 ppb |
2017-04-12 | 2706-804-1314 | 4.60 ppb |
2017-04-12 | 2706-805-1403 | 4.20 ppb |
2017-04-12 | 2706-806-1326 | 4.40 ppb |
2017-04-12 | 2706-807-1522 | 4.30 ppb |
2017-04-12 | 2706-808-1348 | 4.70 ppb |
2017-05-03 | 4417-002-1235 | ND |
2017-05-03 | 4417-003-1220 | ND |
2017-07-12 | 2706-801-0756 | 4.00 ppb |
2017-07-12 | 2706-802-0720 | 3.90 ppb |
2017-07-12 | 2706-803-0735 | 3.70 ppb |
2017-07-12 | 2706-804-0602 | 3.60 ppb |
2017-07-12 | 2706-805-0655 | 2.90 ppb |
2017-07-12 | 2706-806-0615 | 3.50 ppb |
2017-07-12 | 2706-807-0924 | 3.60 ppb |
2017-07-12 | 2706-808-0632 | 3.30 ppb |
2017-10-11 | 2706-801-1301 | 7.80 ppb |
2017-10-11 | 2706-802-1219 | 7.60 ppb |
2017-10-11 | 2706-803-1233 | 7.50 ppb |
2017-10-11 | 2706-804-1101 | 7.70 ppb |
2017-10-11 | 2706-805-1156 | 7.70 ppb |
2017-10-11 | 2706-806-1117 | 7.80 ppb |
2017-10-11 | 2706-807-1411 | 8.10 ppb |
2017-10-11 | 2706-808-1133 | 7.70 ppb |
2018-01-10 | 2706-801-1318 | 6.20 ppb |
2018-01-10 | 2706-802-1247 | 5.90 ppb |
2018-01-10 | 2706-803-1301 | 6.20 ppb |
2018-01-10 | 2706-804-1131 | 6.50 ppb |
2018-01-10 | 2706-805-1229 | 6.00 ppb |
2018-01-10 | 2706-806-1150 | 6.50 ppb |
2018-01-10 | 2706-807-1423 | 6.50 ppb |
2018-01-10 | 2706-808-1207 | 6.60 ppb |
2018-01-23 | 4417-004-0820 | ND |
2018-01-23 | 4417-005-0840 | ND |
2018-04-11 | 2706-801-1533 | 9.00 ppb |
2018-04-11 | 2706-802-1501 | 8.60 ppb |
2018-04-11 | 2706-803-1514 | 8.90 ppb |
2018-04-11 | 2706-804-1352 | 9.00 ppb |
2018-04-11 | 2706-805-1445 | 9.20 ppb |
2018-04-11 | 2706-806-1406 | 8.50 ppb |
2018-04-11 | 2706-807-0518 | 9.60 ppb |
2018-04-11 | 2706-808-1422 | 9.20 ppb |
2018-05-03 | 4417-002-1020 | ND |
2018-05-03 | 4417-003-1035 | ND |
2018-05-03 | 4417-004-0950 | ND |
2018-05-14 | 4417-005-0810 | ND |
2018-07-11 | 2706-801-1639 | 6.70 ppb |
2018-07-11 | 2706-802-1600 | 6.80 ppb |
2018-07-11 | 2706-803-1616 | 7.00 ppb |
2018-07-11 | 2706-804-1420 | 6.70 ppb |
2018-07-11 | 2706-805-1535 | 6.40 ppb |
2018-07-11 | 2706-806-1439 | 6.90 ppb |
2018-07-11 | 2706-807-1810 | 6.80 ppb |
2018-07-11 | 2706-808-1503 | 6.90 ppb |
2018-08-02 | 4417-004-0810 | ND |
2018-09-19 | 4417-005-0735 | ND |
2018-10-08 | 4417-005-0835 | ND |
2018-10-10 | 2706-801-1625 | 3.60 ppb |
2018-10-10 | 2706-802-1452 | 4.40 ppb |
2018-10-10 | 2706-803-1512 | 4.00 ppb |
2018-10-10 | 2706-804-1304 | 4.40 ppb |
2018-10-10 | 2706-805-1428 | 4.30 ppb |
2018-10-10 | 2706-806-1328 | 4.30 ppb |
2018-10-10 | 2706-807-1740 | 4.40 ppb |
2018-10-10 | 2706-808-1350 | 4.50 ppb |
2018-10-16 | 4417-005-0815 | ND |
2019-01-10 | 2706-801-1050 | 8.50 ppb |
2019-01-10 | 2706-802-1008 | 8.70 ppb |
2019-01-10 | 2706-803-1027 | 9.10 ppb |
2019-01-10 | 2706-804-0845 | 8.80 ppb |
2019-01-10 | 2706-805-0950 | 8.20 ppb |
2019-01-10 | 2706-806-0904 | 8.70 ppb |
2019-01-10 | 2706-807-1147 | 8.70 ppb |
2019-01-10 | 2706-808-0924 | 9.10 ppb |
2019-01-29 | 4417-002-0920 | ND |
2019-01-29 | 4417-003-0850 | ND |
2019-01-29 | 4417-004-0820 | ND |
2019-01-29 | 4417-005-0800 | ND |
2019-04-10 | 2706-801-1550 | 1.40 ppb |
2019-04-10 | 2706-802-1510 | 3.70 ppb |
2019-04-10 | 2706-803-1528 | 7.10 ppb |
2019-04-10 | 2706-804-1310 | 1.40 ppb |
2019-04-10 | 2706-805-1444 | 1.40 ppb |
2019-04-10 | 2706-806-1338 | 1.40 ppb |
2019-04-10 | 2706-807-1804 | 7.20 ppb |
2019-04-10 | 2706-808-1400 | 1.50 ppb |
2019-04-25 | 4417-004-0920 | ND |
2019-04-25 | 4417-005-0855 | ND |
2019-07-25 | 4417-002-0945 | ND |
2019-07-25 | 4417-003-1000 | ND |
2019-07-25 | 4417-004-0855 | ND |
2019-07-25 | 4417-005-0910 | ND |
2019-08-02 | 2706-801-0729 | 4.10 ppb |
2019-08-02 | 2706-802-0812 | 4.40 ppb |
2019-08-02 | 2706-803-0752 | 4.30 ppb |
2019-08-02 | 2706-804-0952 | 4.20 ppb |
2019-08-02 | 2706-805-0845 | 3.80 ppb |
2019-08-02 | 2706-806-0932 | 4.40 ppb |
2019-08-02 | 2706-807-0701 | 4.50 ppb |
2019-08-02 | 2706-808-0910 | 4.30 ppb |
2019-10-03 | 4417-004-0800 | ND |
2019-10-03 | 4417-005-0815 | ND |
2019-10-09 | 2706-801-0545 | 4.60 ppb |
2019-10-09 | 2706-802-0555 | 4.80 ppb |
2019-10-09 | 2706-803-0604 | 4.50 ppb |
2019-10-09 | 2706-804-0610 | 4.50 ppb |
2019-10-09 | 2706-805-0620 | 3.80 ppb |
2019-10-09 | 2706-806-0630 | 4.60 ppb |
2019-10-09 | 2706-807-0643 | 4.60 ppb |
2019-10-09 | 2706-808-0655 | 4.50 ppb |