Dibromochloromethane
Metropolitan Utilities District
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 | 4.29 ppb | 58 | 54 | ND - 8.14 ppb |
2015 | 5.16 ppb | 52 | 50 | ND - 14.0 ppb |
2016 | 6.66 ppb | 53 | 51 | ND - 10.6 ppb |
2017 | 5.01 ppb | 61 | 51 | ND - 9.14 ppb |
2018 | 4.70 ppb | 50 | 50 | 2.72 ppb - 7.64 ppb |
2019 | 4.75 ppb | 51 | 50 | ND - 9.61 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 | 294497 | 3.92 ppb |
2014-02-04 | 283321 | 5.80 ppb |
2014-02-04 | 283310 | 5.15 ppb |
2014-02-04 | 283311 | 7.68 ppb |
2014-02-04 | 283312 | 6.75 ppb |
2014-02-04 | 283313 | 5.90 ppb |
2014-02-04 | 283315 | 5.78 ppb |
2014-02-11 | 287613 | 7.69 ppb |
2014-02-11 | 287615 | 7.99 ppb |
2014-02-11 | 287616 | 5.28 ppb |
2014-02-11 | 287617 | 7.53 ppb |
2014-02-11 | 287618 | 6.92 ppb |
2014-02-11 | 287619 | 7.37 ppb |
2014-04-08 | 293527 | ND |
2014-05-05 | 295280 | 2.36 ppb |
2014-05-05 | 295281 | 4.09 ppb |
2014-05-05 | 295282 | 2.42 ppb |
2014-05-05 | 295283 | 7.43 ppb |
2014-05-05 | 295284 | 2.42 ppb |
2014-05-05 | 295285 | 2.45 ppb |
2014-05-05 | 295286 | 8.14 ppb |
2014-05-05 | 295287 | 5.60 ppb |
2014-05-05 | 295288 | 2.85 ppb |
2014-05-05 | 295289 | 2.45 ppb |
2014-05-05 | 295290 | 5.72 ppb |
2014-05-05 | 295291 | 2.88 ppb |
2014-05-12 | 302599 | 7.15 ppb |
2014-06-02 | 294498 | ND |
2014-07-08 | 309807 | ND |
2014-08-05 | 311980 | 3.37 ppb |
2014-08-05 | 311981 | 4.47 ppb |
2014-08-05 | 311982 | 4.53 ppb |
2014-08-05 | 311983 | 4.06 ppb |
2014-08-05 | 311984 | 4.10 ppb |
2014-08-05 | 311985 | 3.64 ppb |
2014-08-05 | 311986 | 4.72 ppb |
2014-08-05 | 311987 | 4.59 ppb |
2014-08-05 | 311988 | 5.40 ppb |
2014-08-05 | 311989 | 5.88 ppb |
2014-08-05 | 311990 | 4.23 ppb |
2014-08-05 | 311991 | 4.09 ppb |
2014-08-26 | 311210 | 1.11 ppb |
2014-08-26 | 311212 | 5.55 ppb |
2014-08-26 | 311213 | 2.40 ppb |
2014-08-26 | 311214 | ND |
2014-09-02 | 324809 | 0.507 ppb |
2014-11-03 | 332936 | 4.50 ppb |
2014-11-03 | 332925 | 2.01 ppb |
2014-11-03 | 332926 | 5.42 ppb |
2014-11-03 | 332927 | 1.96 ppb |
2014-11-03 | 332928 | 5.77 ppb |
2014-11-03 | 332929 | 2.01 ppb |
2014-11-03 | 332930 | 2.59 ppb |
2014-11-03 | 332931 | 3.36 ppb |
2014-11-03 | 332932 | 5.59 ppb |
2014-11-03 | 332933 | 3.69 ppb |
2014-11-03 | 332934 | 3.88 ppb |
2014-11-03 | 332935 | 5.78 ppb |
2015-02-02 | 346549 | 7.95 ppb |
2015-02-02 | 346546 | 2.31 ppb |
2015-02-02 | 346547 | 5.30 ppb |
2015-02-02 | 346548 | 2.24 ppb |
2015-02-02 | 346550 | 2.47 ppb |
2015-02-02 | 346551 | 2.38 ppb |
2015-02-02 | 346552 | 7.92 ppb |
2015-02-02 | 346553 | 5.56 ppb |
2015-02-02 | 346554 | 3.05 ppb |
2015-02-02 | 346555 | 6.30 ppb |
2015-02-02 | 346556 | 5.21 ppb |
2015-02-02 | 346557 | 4.31 ppb |
2015-04-07 | 353665 | 8.86 ppb |
2015-04-07 | 353666 | 5.10 ppb |
2015-04-07 | 353667 | ND |
2015-05-05 | 361730 | 7.04 ppb |
2015-05-05 | 361734 | 6.57 ppb |
2015-05-05 | 361735 | 3.26 ppb |
2015-05-05 | 361728 | 5.38 ppb |
2015-05-05 | 361729 | 3.30 ppb |
2015-05-05 | 361731 | 3.17 ppb |
2015-05-05 | 361732 | 7.59 ppb |
2015-05-05 | 361733 | 3.27 ppb |
2015-05-05 | 361736 | 5.41 ppb |
2015-05-05 | 361737 | 5.92 ppb |
2015-05-05 | 361738 | 3.34 ppb |
2015-05-05 | 361739 | 5.74 ppb |
2015-07-07 | 371752 | ND |
2015-08-03 | 374538 | 2.40 ppb |
2015-08-03 | 374539 | 6.40 ppb |
2015-08-03 | 374540 | 2.80 ppb |
2015-08-03 | 374541 | 10.00 ppb |
2015-08-03 | 374542 | 3.80 ppb |
2015-08-03 | 374543 | 3.50 ppb |
2015-08-03 | 374546 | 3.80 ppb |
2015-08-03 | 374547 | 2.80 ppb |
2015-08-03 | 374548 | 4.20 ppb |
2015-08-03 | 374549 | 14.0 ppb |
2015-08-03 | 374544 | 3.60 ppb |
2015-08-03 | 374545 | 14.0 ppb |
2015-11-04 | 393707 | 8.30 ppb |
2015-11-04 | 393708 | 7.45 ppb |
2015-11-04 | 393709 | 3.26 ppb |
2015-11-04 | 393710 | 4.71 ppb |
2015-11-04 | 393711 | 8.02 ppb |
2015-11-04 | 393712 | 3.59 ppb |
2015-11-04 | 393713 | 5.36 ppb |
2015-11-04 | 393714 | 3.19 ppb |
2015-11-04 | 393715 | 3.40 ppb |
2015-11-04 | 393716 | 6.77 ppb |
2015-11-04 | 393717 | 8.35 ppb |
2015-11-04 | 393718 | 5.66 ppb |
2016-02-01 | 6.98 ppb | |
2016-02-01 | 9.42 ppb | |
2016-02-01 | 4.58 ppb | |
2016-02-01 | 9.35 ppb | |
2016-02-01 | 4.51 ppb | |
2016-02-01 | 6.95 ppb | |
2016-02-01 | 8.99 ppb | |
2016-02-01 | 9.32 ppb | |
2016-02-01 | 8.87 ppb | |
2016-02-01 | 4.05 ppb | |
2016-02-01 | 9.80 ppb | |
2016-02-01 | 7.60 ppb | |
2016-04-04 | ND | |
2016-04-18 | 6.98 ppb | |
2016-04-18 | 4.95 ppb | |
2016-05-02 | 10.6 ppb | |
2016-05-02 | 7.72 ppb | |
2016-05-02 | 4.05 ppb | |
2016-05-02 | 2.96 ppb | |
2016-05-02 | 7.27 ppb | |
2016-05-02 | 5.04 ppb | |
2016-05-02 | 4.90 ppb | |
2016-05-02 | 6.02 ppb | |
2016-05-02 | 3.99 ppb | |
2016-05-02 | 4.61 ppb | |
2016-05-02 | 4.61 ppb | |
2016-05-02 | 7.22 ppb | |
2016-05-02 | 3.48 ppb | |
2016-07-25 | ND | |
2016-08-02 | 7.37 ppb | |
2016-08-02 | 5.81 ppb | |
2016-08-02 | 7.84 ppb | |
2016-08-02 | 6.03 ppb | |
2016-08-02 | 8.53 ppb | |
2016-08-02 | 5.36 ppb | |
2016-08-02 | 5.69 ppb | |
2016-08-02 | 5.57 ppb | |
2016-08-02 | 5.26 ppb | |
2016-08-02 | 5.66 ppb | |
2016-08-02 | 7.27 ppb | |
2016-08-02 | 5.34 ppb | |
2016-11-07 | 8.20 ppb | |
2016-11-07 | 7.36 ppb | |
2016-11-07 | 7.19 ppb | |
2016-11-07 | 10.3 ppb | |
2016-11-07 | 8.66 ppb | |
2016-11-07 | 7.33 ppb | |
2016-11-07 | 7.59 ppb | |
2016-11-07 | 7.37 ppb | |
2016-11-07 | 9.74 ppb | |
2016-11-07 | 10.1 ppb | |
2016-11-07 | 9.33 ppb | |
2016-11-07 | 9.29 ppb | |
2017-02-07 | 4.71 ppb | |
2017-02-07 | 7.72 ppb | |
2017-02-07 | 7.60 ppb | |
2017-02-07 | 7.39 ppb | |
2017-02-07 | 4.70 ppb | |
2017-02-07 | 7.18 ppb | |
2017-02-07 | 4.85 ppb | |
2017-02-07 | 7.06 ppb | |
2017-02-07 | 6.43 ppb | |
2017-02-07 | 4.03 ppb | |
2017-02-07 | 6.33 ppb | |
2017-02-07 | 4.09 ppb | |
2017-04-11 | ND | |
2017-04-11 | ND | |
2017-04-11 | ND | |
2017-04-11 | ND | |
2017-04-11 | 7.13 ppb | |
2017-04-17 | 7.24 ppb | |
2017-04-17 | 3.29 ppb | |
2017-05-02 | 6.79 ppb | |
2017-05-02 | 6.78 ppb | |
2017-05-02 | 7.79 ppb | |
2017-05-02 | 5.22 ppb | |
2017-05-02 | 3.63 ppb | |
2017-05-02 | 6.61 ppb | |
2017-05-02 | 7.89 ppb | |
2017-05-02 | 6.35 ppb | |
2017-05-02 | 3.32 ppb | |
2017-05-02 | 3.82 ppb | |
2017-05-15 | 8.29 ppb | |
2017-05-15 | 5.69 ppb | |
2017-06-05 | ND | |
2017-06-05 | ND | |
2017-06-05 | ND | |
2017-06-05 | ND | |
2017-06-05 | ND | |
2017-08-07 | 4.84 ppb | |
2017-08-07 | 4.89 ppb | |
2017-08-07 | 7.40 ppb | |
2017-08-07 | 4.91 ppb | |
2017-08-07 | 4.95 ppb | |
2017-08-07 | 8.81 ppb | |
2017-08-07 | 4.70 ppb | |
2017-08-07 | 6.33 ppb | |
2017-08-07 | 6.72 ppb | |
2017-08-07 | 4.56 ppb | |
2017-08-07 | 9.14 ppb | |
2017-08-07 | 4.74 ppb | |
2017-09-19 | ND | |
2017-11-07 | 4.20 ppb | |
2017-11-07 | 5.51 ppb | |
2017-11-07 | 5.33 ppb | |
2017-11-07 | 6.70 ppb | |
2017-11-07 | 5.37 ppb | |
2017-11-07 | 5.77 ppb | |
2017-11-07 | 5.34 ppb | |
2017-11-07 | 5.82 ppb | |
2017-11-07 | 9.13 ppb | |
2017-11-07 | 5.26 ppb | |
2017-11-07 | 8.63 ppb | |
2017-11-07 | 4.77 ppb | |
2018-02-06 | 534089 | 7.64 ppb |
2018-02-06 | 534090 | 4.15 ppb |
2018-02-06 | 534091 | 3.81 ppb |
2018-02-06 | 534092 | 3.98 ppb |
2018-02-06 | 534093 | 5.78 ppb |
2018-02-06 | 534094 | 3.92 ppb |
2018-02-06 | 534095 | 6.81 ppb |
2018-02-06 | 534096 | 6.64 ppb |
2018-02-06 | 534097 | 6.13 ppb |
2018-02-06 | 534098 | 6.59 ppb |
2018-02-06 | 534099 | 7.57 ppb |
2018-02-06 | 534100 | 3.78 ppb |
2018-05-07 | 549814 | 3.16 ppb |
2018-05-07 | 549815 | 4.71 ppb |
2018-05-07 | 549816 | 3.44 ppb |
2018-05-07 | 549817 | 5.93 ppb |
2018-05-07 | 549818 | 2.99 ppb |
2018-05-07 | 549819 | 5.96 ppb |
2018-05-07 | 549820 | 2.82 ppb |
2018-05-07 | 549821 | 2.80 ppb |
2018-05-07 | 549822 | 5.25 ppb |
2018-05-07 | 549823 | 3.65 ppb |
2018-05-07 | 549824 | 2.91 ppb |
2018-05-07 | 549825 | 2.88 ppb |
2018-05-14 | 542539 | 5.24 ppb |
2018-05-14 | 542540 | 3.58 ppb |
2018-08-08 | 567019 | 5.23 ppb |
2018-08-08 | 567020 | 4.41 ppb |
2018-08-08 | 567021 | 5.45 ppb |
2018-08-08 | 567022 | 4.88 ppb |
2018-08-08 | 567023 | 4.50 ppb |
2018-08-08 | 567024 | 5.13 ppb |
2018-08-08 | 567025 | 4.61 ppb |
2018-08-08 | 567026 | 5.95 ppb |
2018-08-08 | 567027 | 4.74 ppb |
2018-08-08 | 567028 | 5.15 ppb |
2018-08-08 | 567029 | 4.48 ppb |
2018-08-08 | 567030 | 4.57 ppb |
2018-11-06 | 583374 | 6.51 ppb |
2018-11-06 | 583375 | 3.36 ppb |
2018-11-06 | 583376 | 6.13 ppb |
2018-11-06 | 583377 | 2.72 ppb |
2018-11-06 | 583378 | 6.26 ppb |
2018-11-06 | 583379 | 2.85 ppb |
2018-11-06 | 583380 | 5.83 ppb |
2018-11-06 | 583381 | 2.86 ppb |
2018-11-06 | 583382 | 4.07 ppb |
2018-11-06 | 583383 | 3.59 ppb |
2018-11-06 | 583384 | 4.18 ppb |
2018-11-06 | 583385 | 5.42 ppb |
2019-02-05 | 595236 | 5.54 ppb |
2019-02-05 | 595237 | 5.81 ppb |
2019-02-05 | 595238 | 5.10 ppb |
2019-02-05 | 595239 | 7.13 ppb |
2019-02-05 | 595240 | 4.84 ppb |
2019-02-05 | 595241 | 7.43 ppb |
2019-02-05 | 595242 | 5.48 ppb |
2019-02-05 | 595243 | 7.08 ppb |
2019-02-05 | 595244 | 7.28 ppb |
2019-02-05 | 595245 | 7.35 ppb |
2019-02-05 | 595246 | 5.07 ppb |
2019-02-05 | 595247 | 5.45 ppb |
2019-04-02 | 604245 | 5.23 ppb |
2019-04-22 | 604810 | 9.61 ppb |
2019-05-07 | 600564 | 4.13 ppb |
2019-05-07 | 600565 | 4.34 ppb |
2019-05-07 | 600566 | 3.43 ppb |
2019-05-07 | 600567 | 5.98 ppb |
2019-05-07 | 600568 | 2.98 ppb |
2019-05-07 | 600569 | 3.58 ppb |
2019-05-07 | 600570 | 3.08 ppb |
2019-05-07 | 600571 | 6.41 ppb |
2019-05-07 | 600572 | 3.34 ppb |
2019-05-07 | 600573 | 3.20 ppb |
2019-05-07 | 600574 | 3.15 ppb |
2019-05-07 | 600575 | 2.95 ppb |
2019-06-10 | 604811 | ND |
2019-08-06 | 622448 | 4.39 ppb |
2019-08-06 | 622449 | 5.82 ppb |
2019-08-06 | 622450 | 6.10 ppb |
2019-08-06 | 622451 | 4.53 ppb |
2019-08-06 | 622452 | 2.98 ppb |
2019-08-06 | 622453 | 2.76 ppb |
2019-08-06 | 622454 | 2.93 ppb |
2019-08-06 | 622455 | 2.73 ppb |
2019-08-06 | 622456 | 5.86 ppb |
2019-08-06 | 622457 | 3.15 ppb |
2019-08-06 | 622458 | 3.38 ppb |
2019-08-06 | 622459 | 3.11 ppb |
2019-11-05 | 644378 | 3.85 ppb |
2019-11-05 | 644379 | 3.78 ppb |
2019-11-05 | 644380 | 6.44 ppb |
2019-11-05 | 644381 | 7.30 ppb |
2019-11-05 | 644382 | 4.20 ppb |
2019-11-05 | 644383 | 5.64 ppb |
2019-11-05 | 644384 | 3.89 ppb |
2019-11-05 | 644385 | 3.83 ppb |
2019-11-05 | 644386 | 5.20 ppb |
2019-11-05 | 644387 | 6.54 ppb |
2019-11-05 | 644388 | 4.27 ppb |
2019-11-05 | 644389 | 4.79 ppb |