Bromodichloromethane
Metropolitan Utilities District
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 | 8.57 ppb | 58 | 54 | ND - 12.4 ppb |
2015 | 9.69 ppb | 52 | 50 | ND - 19.0 ppb |
2016 | 11.9 ppb | 53 | 51 | ND - 15.8 ppb |
2017 | 9.67 ppb | 61 | 52 | ND - 24.5 ppb |
2018 | 10.4 ppb | 50 | 50 | 7.14 ppb - 15.4 ppb |
2019 | 12.3 ppb | 51 | 50 | ND - 17.8 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 |
---|---|---|
2014-01-08 | 294497 | 9.93 ppb |
2014-02-04 | 283310 | 9.69 ppb |
2014-02-04 | 283311 | 8.97 ppb |
2014-02-04 | 283312 | 9.56 ppb |
2014-02-04 | 283313 | 10.5 ppb |
2014-02-04 | 283315 | 10.3 ppb |
2014-02-04 | 283321 | 10.6 ppb |
2014-02-11 | 287613 | 9.21 ppb |
2014-02-11 | 287615 | 10.3 ppb |
2014-02-11 | 287616 | 10.3 ppb |
2014-02-11 | 287617 | 10.7 ppb |
2014-02-11 | 287618 | 10.1 ppb |
2014-02-11 | 287619 | 9.94 ppb |
2014-04-08 | 293527 | ND |
2014-05-05 | 295287 | 10.3 ppb |
2014-05-05 | 295288 | 7.00 ppb |
2014-05-05 | 295289 | 6.86 ppb |
2014-05-05 | 295290 | 8.76 ppb |
2014-05-05 | 295291 | 8.16 ppb |
2014-05-05 | 295284 | 6.68 ppb |
2014-05-05 | 295285 | 7.07 ppb |
2014-05-05 | 295286 | 8.15 ppb |
2014-05-05 | 295280 | 6.80 ppb |
2014-05-05 | 295281 | 8.29 ppb |
2014-05-05 | 295282 | 7.02 ppb |
2014-05-05 | 295283 | 7.22 ppb |
2014-05-12 | 302599 | 8.40 ppb |
2014-06-02 | 294498 | ND |
2014-07-08 | 309807 | ND |
2014-08-05 | 311990 | 11.2 ppb |
2014-08-05 | 311991 | 10.9 ppb |
2014-08-05 | 311980 | 10.2 ppb |
2014-08-05 | 311981 | 12.4 ppb |
2014-08-05 | 311982 | 12.1 ppb |
2014-08-05 | 311983 | 11.3 ppb |
2014-08-05 | 311984 | 11.0 ppb |
2014-08-05 | 311985 | 10.6 ppb |
2014-08-05 | 311986 | 11.4 ppb |
2014-08-05 | 311987 | 12.2 ppb |
2014-08-05 | 311988 | 12.1 ppb |
2014-08-05 | 311989 | 12.1 ppb |
2014-08-26 | 311210 | 2.65 ppb |
2014-08-26 | 311212 | 11.7 ppb |
2014-08-26 | 311213 | 4.92 ppb |
2014-08-26 | 311214 | ND |
2014-09-02 | 324809 | 1.02 ppb |
2014-11-03 | 332929 | 7.17 ppb |
2014-11-03 | 332930 | 8.24 ppb |
2014-11-03 | 332931 | 9.30 ppb |
2014-11-03 | 332932 | 10.4 ppb |
2014-11-03 | 332933 | 9.98 ppb |
2014-11-03 | 332934 | 9.17 ppb |
2014-11-03 | 332935 | 10.3 ppb |
2014-11-03 | 332936 | 10.2 ppb |
2014-11-03 | 332925 | 6.82 ppb |
2014-11-03 | 332926 | 10.4 ppb |
2014-11-03 | 332927 | 7.00 ppb |
2014-11-03 | 332928 | 9.70 ppb |
2015-02-02 | 346549 | 9.04 ppb |
2015-02-02 | 346546 | 7.70 ppb |
2015-02-02 | 346547 | 10.1 ppb |
2015-02-02 | 346548 | 7.43 ppb |
2015-02-02 | 346550 | 8.22 ppb |
2015-02-02 | 346551 | 7.80 ppb |
2015-02-02 | 346552 | 8.72 ppb |
2015-02-02 | 346553 | 10.1 ppb |
2015-02-02 | 346554 | 10.1 ppb |
2015-02-02 | 346555 | 10.1 ppb |
2015-02-02 | 346556 | 10.2 ppb |
2015-02-02 | 346557 | 9.60 ppb |
2015-04-07 | 353665 | 9.39 ppb |
2015-04-07 | 353666 | 12.5 ppb |
2015-04-07 | 353667 | ND |
2015-05-05 | 361728 | 7.87 ppb |
2015-05-05 | 361729 | 7.76 ppb |
2015-05-05 | 361731 | 7.60 ppb |
2015-05-05 | 361732 | 8.36 ppb |
2015-05-05 | 361733 | 7.54 ppb |
2015-05-05 | 361736 | 7.76 ppb |
2015-05-05 | 361737 | 8.16 ppb |
2015-05-05 | 361738 | 7.80 ppb |
2015-05-05 | 361739 | 8.27 ppb |
2015-05-05 | 361730 | 7.56 ppb |
2015-05-05 | 361734 | 8.48 ppb |
2015-05-05 | 361735 | 7.46 ppb |
2015-07-07 | 371752 | ND |
2015-08-03 | 374538 | 8.90 ppb |
2015-08-03 | 374539 | 12.0 ppb |
2015-08-03 | 374540 | 9.50 ppb |
2015-08-03 | 374541 | 14.0 ppb |
2015-08-03 | 374542 | 12.0 ppb |
2015-08-03 | 374543 | 11.0 ppb |
2015-08-03 | 374546 | 12.0 ppb |
2015-08-03 | 374547 | 9.30 ppb |
2015-08-03 | 374548 | 12.0 ppb |
2015-08-03 | 374549 | 19.0 ppb |
2015-08-03 | 374544 | 9.90 ppb |
2015-08-03 | 374545 | 19.0 ppb |
2015-11-04 | 393707 | 11.6 ppb |
2015-11-04 | 393708 | 12.3 ppb |
2015-11-04 | 393709 | 9.57 ppb |
2015-11-04 | 393710 | 10.3 ppb |
2015-11-04 | 393711 | 11.1 ppb |
2015-11-04 | 393712 | 9.76 ppb |
2015-11-04 | 393713 | 10.5 ppb |
2015-11-04 | 393714 | 9.30 ppb |
2015-11-04 | 393715 | 9.09 ppb |
2015-11-04 | 393716 | 11.7 ppb |
2015-11-04 | 393717 | 13.2 ppb |
2015-11-04 | 393718 | 11.0 ppb |
2016-02-01 | 10.5 ppb | |
2016-02-01 | 11.1 ppb | |
2016-02-01 | 10.9 ppb | |
2016-02-01 | 14.6 ppb | |
2016-02-01 | 10.8 ppb | |
2016-02-01 | 12.2 ppb | |
2016-02-01 | 13.8 ppb | |
2016-02-01 | 9.72 ppb | |
2016-02-01 | 14.3 ppb | |
2016-02-01 | 12.6 ppb | |
2016-02-01 | 13.9 ppb | |
2016-02-01 | 14.4 ppb | |
2016-04-04 | ND | |
2016-04-18 | 7.67 ppb | |
2016-04-18 | 10.5 ppb | |
2016-05-02 | 12.7 ppb | |
2016-05-02 | 13.0 ppb | |
2016-05-02 | 12.8 ppb | |
2016-05-02 | 10.6 ppb | |
2016-05-02 | 10.5 ppb | |
2016-05-02 | 13.2 ppb | |
2016-05-02 | 12.9 ppb | |
2016-05-02 | 12.8 ppb | |
2016-05-02 | 12.5 ppb | |
2016-05-02 | 12.8 ppb | |
2016-05-02 | 13.3 ppb | |
2016-05-02 | 11.5 ppb | |
2016-05-02 | 11.8 ppb | |
2016-07-25 | ND | |
2016-08-02 | 12.7 ppb | |
2016-08-02 | 15.3 ppb | |
2016-08-02 | 15.8 ppb | |
2016-08-02 | 15.6 ppb | |
2016-08-02 | 15.6 ppb | |
2016-08-02 | 13.5 ppb | |
2016-08-02 | 14.0 ppb | |
2016-08-02 | 13.8 ppb | |
2016-08-02 | 12.2 ppb | |
2016-08-02 | 13.8 ppb | |
2016-08-02 | 13.8 ppb | |
2016-08-02 | 13.0 ppb | |
2016-11-07 | 10.6 ppb | |
2016-11-07 | 11.6 ppb | |
2016-11-07 | 11.6 ppb | |
2016-11-07 | 11.4 ppb | |
2016-11-07 | 11.0 ppb | |
2016-11-07 | 11.0 ppb | |
2016-11-07 | 11.5 ppb | |
2016-11-07 | 11.1 ppb | |
2016-11-07 | 11.2 ppb | |
2016-11-07 | 11.7 ppb | |
2016-11-07 | 11.0 ppb | |
2016-11-07 | 11.0 ppb | |
2017-02-07 | 12.2 ppb | |
2017-02-07 | 11.6 ppb | |
2017-02-07 | 14.9 ppb | |
2017-02-07 | 12.2 ppb | |
2017-02-07 | 18.6 ppb | |
2017-02-07 | 11.4 ppb | |
2017-02-07 | 15.4 ppb | |
2017-02-07 | 10.5 ppb | |
2017-02-07 | 13.4 ppb | |
2017-02-07 | 10.8 ppb | |
2017-02-07 | 12.6 ppb | |
2017-02-07 | 10.2 ppb | |
2017-04-11 | ND | |
2017-04-11 | ND | |
2017-04-11 | ND | |
2017-04-11 | ND | |
2017-04-11 | 9.35 ppb | |
2017-04-17 | 8.97 ppb | |
2017-04-17 | 7.83 ppb | |
2017-05-02 | 9.83 ppb | |
2017-05-02 | 9.69 ppb | |
2017-05-02 | 10.4 ppb | |
2017-05-02 | 9.53 ppb | |
2017-05-02 | 9.56 ppb | |
2017-05-02 | 8.27 ppb | |
2017-05-02 | 9.89 ppb | |
2017-05-02 | 9.54 ppb | |
2017-05-02 | 10.3 ppb | |
2017-05-02 | 10.2 ppb | |
2017-05-15 | 24.5 ppb | |
2017-05-15 | 13.1 ppb | |
2017-06-05 | 0.915 ppb | |
2017-06-05 | ND | |
2017-06-05 | ND | |
2017-06-05 | ND | |
2017-06-05 | ND | |
2017-08-07 | 13.3 ppb | |
2017-08-07 | 10.4 ppb | |
2017-08-07 | 10.8 ppb | |
2017-08-07 | 14.6 ppb | |
2017-08-07 | 10.3 ppb | |
2017-08-07 | 11.4 ppb | |
2017-08-07 | 11.9 ppb | |
2017-08-07 | 10.1 ppb | |
2017-08-07 | 14.7 ppb | |
2017-08-07 | 9.88 ppb | |
2017-08-07 | 10.3 ppb | |
2017-08-07 | 10.6 ppb | |
2017-09-19 | ND | |
2017-11-07 | 14.9 ppb | |
2017-11-07 | 11.0 ppb | |
2017-11-07 | 10.2 ppb | |
2017-11-07 | 11.3 ppb | |
2017-11-07 | 10.1 ppb | |
2017-11-07 | 10.5 ppb | |
2017-11-07 | 9.89 ppb | |
2017-11-07 | 10.7 ppb | |
2017-11-07 | 13.1 ppb | |
2017-11-07 | 10.00 ppb | |
2017-11-07 | 12.1 ppb | |
2017-11-07 | 12.4 ppb | |
2018-02-06 | 534089 | 12.0 ppb |
2018-02-06 | 534090 | 8.03 ppb |
2018-02-06 | 534091 | 7.46 ppb |
2018-02-06 | 534092 | 7.42 ppb |
2018-02-06 | 534093 | 9.82 ppb |
2018-02-06 | 534094 | 7.89 ppb |
2018-02-06 | 534095 | 8.85 ppb |
2018-02-06 | 534096 | 8.60 ppb |
2018-02-06 | 534097 | 10.2 ppb |
2018-02-06 | 534098 | 11.4 ppb |
2018-02-06 | 534099 | 12.3 ppb |
2018-02-06 | 534100 | 8.29 ppb |
2018-05-07 | 549814 | 12.3 ppb |
2018-05-07 | 549815 | 11.0 ppb |
2018-05-07 | 549816 | 13.2 ppb |
2018-05-07 | 549817 | 9.10 ppb |
2018-05-07 | 549818 | 9.85 ppb |
2018-05-07 | 549819 | 8.84 ppb |
2018-05-07 | 549820 | 10.4 ppb |
2018-05-07 | 549821 | 10.9 ppb |
2018-05-07 | 549822 | 11.4 ppb |
2018-05-07 | 549823 | 14.2 ppb |
2018-05-07 | 549824 | 11.1 ppb |
2018-05-07 | 549825 | 11.3 ppb |
2018-05-14 | 542539 | 9.73 ppb |
2018-05-14 | 542540 | 9.59 ppb |
2018-08-08 | 567019 | 15.4 ppb |
2018-08-08 | 567020 | 9.59 ppb |
2018-08-08 | 567021 | 11.2 ppb |
2018-08-08 | 567022 | 10.5 ppb |
2018-08-08 | 567023 | 10.3 ppb |
2018-08-08 | 567024 | 10.9 ppb |
2018-08-08 | 567025 | 10.4 ppb |
2018-08-08 | 567026 | 11.2 ppb |
2018-08-08 | 567027 | 10.6 ppb |
2018-08-08 | 567028 | 13.8 ppb |
2018-08-08 | 567029 | 10.4 ppb |
2018-08-08 | 567030 | 10.2 ppb |
2018-11-06 | 583374 | 12.7 ppb |
2018-11-06 | 583375 | 8.85 ppb |
2018-11-06 | 583376 | 13.0 ppb |
2018-11-06 | 583377 | 7.39 ppb |
2018-11-06 | 583378 | 12.4 ppb |
2018-11-06 | 583379 | 7.35 ppb |
2018-11-06 | 583380 | 12.3 ppb |
2018-11-06 | 583381 | 7.14 ppb |
2018-11-06 | 583382 | 10.3 ppb |
2018-11-06 | 583383 | 9.11 ppb |
2018-11-06 | 583384 | 9.92 ppb |
2018-11-06 | 583385 | 11.9 ppb |
2019-02-05 | 595236 | 9.12 ppb |
2019-02-05 | 595237 | 9.87 ppb |
2019-02-05 | 595238 | 10.2 ppb |
2019-02-05 | 595239 | 11.4 ppb |
2019-02-05 | 595240 | 9.90 ppb |
2019-02-05 | 595241 | 11.9 ppb |
2019-02-05 | 595242 | 11.7 ppb |
2019-02-05 | 595243 | 11.6 ppb |
2019-02-05 | 595244 | 12.1 ppb |
2019-02-05 | 595245 | 12.1 ppb |
2019-02-05 | 595246 | 10.2 ppb |
2019-02-05 | 595247 | 11.9 ppb |
2019-04-02 | 604245 | 11.4 ppb |
2019-04-22 | 604810 | 12.4 ppb |
2019-05-07 | 600564 | 9.36 ppb |
2019-05-07 | 600565 | 10.1 ppb |
2019-05-07 | 600566 | 13.8 ppb |
2019-05-07 | 600567 | 14.6 ppb |
2019-05-07 | 600568 | 15.5 ppb |
2019-05-07 | 600569 | 15.3 ppb |
2019-05-07 | 600570 | 14.7 ppb |
2019-05-07 | 600571 | 14.2 ppb |
2019-05-07 | 600572 | 15.1 ppb |
2019-05-07 | 600573 | 15.7 ppb |
2019-05-07 | 600574 | 16.1 ppb |
2019-05-07 | 600575 | 14.7 ppb |
2019-06-10 | 604811 | ND |
2019-08-06 | 622448 | 13.1 ppb |
2019-08-06 | 622449 | 17.7 ppb |
2019-08-06 | 622450 | 17.8 ppb |
2019-08-06 | 622451 | 12.8 ppb |
2019-08-06 | 622452 | 11.3 ppb |
2019-08-06 | 622453 | 9.89 ppb |
2019-08-06 | 622454 | 10.9 ppb |
2019-08-06 | 622455 | 10.3 ppb |
2019-08-06 | 622456 | 12.3 ppb |
2019-08-06 | 622457 | 11.2 ppb |
2019-08-06 | 622458 | 11.9 ppb |
2019-08-06 | 622459 | 10.7 ppb |
2019-11-05 | 644378 | 10.4 ppb |
2019-11-05 | 644379 | 10.3 ppb |
2019-11-05 | 644380 | 14.0 ppb |
2019-11-05 | 644381 | 15.2 ppb |
2019-11-05 | 644382 | 11.7 ppb |
2019-11-05 | 644383 | 13.7 ppb |
2019-11-05 | 644384 | 10.2 ppb |
2019-11-05 | 644385 | 10.1 ppb |
2019-11-05 | 644386 | 15.5 ppb |
2019-11-05 | 644387 | 14.4 ppb |
2019-11-05 | 644388 | 11.7 ppb |
2019-11-05 | 644389 | 14.3 ppb |