Dibromochloromethane
Carson City Public Works
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 |
---|---|---|---|---|
2014 | 0.668 ppb | 36 | 17 | ND - 4.08 ppb |
2015 | 0.396 ppb | 58 | 15 | ND - 3.46 ppb |
2016 | 0.854 ppb | 33 | 15 | ND - 6.19 ppb |
2017 | 0.655 ppb | 37 | 18 | ND - 4.50 ppb |
2018 | 0.530 ppb | 52 | 16 | ND - 5.45 ppb |
2019 | 0.662 ppb | 38 | 15 | ND - 6.49 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 |
---|---|---|
2014-01-28 | 201401300174 | 3.41 ppb |
2014-01-28 | 201401300175 | ND |
2014-01-28 | 201401300176 | ND |
2014-01-28 | 201401300177 | ND |
2014-01-28 | 201401300178 | ND |
2014-01-28 | 201401300179 | ND |
2014-01-28 | 201401300180 | ND |
2014-01-28 | 201401300181 | 1.33 ppb |
2014-02-24 | 201402260926-V | ND |
2014-04-08 | 201404120248 | 4.08 ppb |
2014-04-08 | 201404120249 | ND |
2014-04-08 | 201404120250 | ND |
2014-04-08 | 201404120251 | 0.510 ppb |
2014-04-08 | 201404120252 | ND |
2014-04-08 | 201404120253 | 0.530 ppb |
2014-04-08 | 201404120254 | 0.950 ppb |
2014-04-08 | 201404120255 | ND |
2014-05-27 | 201405280593-V | ND |
2014-07-01 | 201407020370 | ND |
2014-07-28 | 201407300263 | 3.79 ppb |
2014-07-28 | 201407300264 | ND |
2014-07-28 | 201407300265 | ND |
2014-07-28 | 201407300266 | ND |
2014-07-28 | 201407300267 | 1.10 ppb |
2014-07-28 | 201407300268 | 0.550 ppb |
2014-07-28 | 201407300269 | 1.09 ppb |
2014-07-28 | 201407300270 | 1.88 ppb |
2014-09-04 | 201409050252 | ND |
2014-10-27 | 201410290440 | 1.77 ppb |
2014-10-27 | 201410290441 | ND |
2014-10-27 | 201410290442 | ND |
2014-10-27 | 201410290443 | 0.530 ppb |
2014-10-27 | 201410290444 | 0.590 ppb |
2014-10-27 | 201410290445 | 0.640 ppb |
2014-10-27 | 201410290446 | 0.680 ppb |
2014-10-27 | 201410290447 | 0.610 ppb |
2015-01-26 | 201501280717 | 2.31 ppb |
2015-01-26 | 201501280718 | ND |
2015-01-26 | 201501280719 | ND |
2015-01-26 | 201501280720 | ND |
2015-01-26 | 201501280721 | ND |
2015-01-26 | 201501280722 | ND |
2015-01-26 | 201501280723 | ND |
2015-01-26 | 201501280724 | ND |
2015-04-28 | 201504300112 | 3.46 ppb |
2015-04-28 | 201504300113 | ND |
2015-04-28 | 201504300114 | ND |
2015-04-28 | 201504300115 | 0.650 ppb |
2015-04-28 | 201504300116 | 1.59 ppb |
2015-04-28 | 201504300117 | 2.07 ppb |
2015-04-28 | 201504300118 | ND |
2015-04-28 | 201504300119 | 0.730 ppb |
2015-05-19 | 201505210392V | ND |
2015-05-19 | 201505210480V | ND |
2015-05-19 | 201505210341V | ND |
2015-05-19 | 201505210388V | ND |
2015-05-20 | 201505210403V | ND |
2015-05-20 | 201505210412V | ND |
2015-05-20 | 201505210405-VOC | ND |
2015-05-21 | 201505220242V | ND |
2015-05-21 | 201505220202V | 2.20 ppb |
2015-05-21 | 201505220247-VOC | ND |
2015-06-01 | 201506030407-VOC | ND |
2015-06-01 | 201506030355-VOC | ND |
2015-06-01 | 2015506030247-VO | ND |
2015-06-01 | 201506030333-VOC | ND |
2015-06-09 | 201506120280-VOC | ND |
2015-06-09 | 201506120278-VOC | ND |
2015-06-11 | 201506120209-VOC | ND |
2015-06-11 | 201506120140-VOC | ND |
2015-06-29 | 201506300124-VOC | ND |
2015-06-29 | 201506300177-VOC | ND |
2015-06-30 | 201507010430-VOC | ND |
2015-06-30 | 201507160442-VOC | ND |
2015-07-28 | 201507300229 | 2.33 ppb |
2015-07-28 | 201507300230 | 0.900 ppb |
2015-07-28 | 201507300231 | ND |
2015-07-28 | 201507300232 | ND |
2015-07-28 | 201507300233 | 1.24 ppb |
2015-07-28 | 201507300234 | 1.98 ppb |
2015-07-28 | 201507300235 | 0.600 ppb |
2015-07-28 | 201507300236 | 0.970 ppb |
2015-08-03 | 201508040410-VOC | ND |
2015-08-04 | 201508050421-VOC | ND |
2015-08-10 | 201508110263-VOC | ND |
2015-09-15 | 201509020134-VOC | ND |
2015-10-12 | 201510140539 | 0.830 ppb |
2015-10-12 | 201510140540 | ND |
2015-10-12 | 201510140541 | ND |
2015-10-12 | 201510140542 | ND |
2015-10-12 | 201510140543 | ND |
2015-10-12 | 201510140544 | ND |
2015-10-12 | 201510140545 | 1.10 ppb |
2015-10-12 | 201510140546 | ND |
2016-01-20 | 201601220225 | 2.69 ppb |
2016-01-20 | 201601220226 | ND |
2016-01-20 | 201601220227 | ND |
2016-01-20 | 201601220228 | 3.73 ppb |
2016-01-20 | 201601220229 | ND |
2016-01-20 | 201601220230 | ND |
2016-01-20 | 201601220231 | ND |
2016-01-20 | 201601220232 | ND |
2016-04-26 | 201604280378 | 3.57 ppb |
2016-04-26 | 201604280379 | 0.810 ppb |
2016-04-26 | 201604280380 | ND |
2016-04-26 | 201604280381 | 1.49 ppb |
2016-04-26 | 201604280382 | 0.950 ppb |
2016-04-26 | 201604280383 | ND |
2016-04-27 | 201604280384 | 0.800 ppb |
2016-04-27 | 201604280385 | 0.950 ppb |
2016-06-22 | 201606230265-VOC | ND |
2016-07-27 | 20160280420 | 3.64 ppb |
2016-07-27 | 201607280421 | 0.520 ppb |
2016-07-27 | 201607280422 | ND |
2016-07-27 | 201607280423 | ND |
2016-07-27 | 201607280424 | ND |
2016-07-27 | 201607280425 | ND |
2016-07-27 | 201607280426 | 0.500 ppb |
2016-07-27 | 201607280430 | ND |
2016-10-12 | 201610130512 | 6.19 ppb |
2016-10-12 | 201610130513 | 0.550 ppb |
2016-10-12 | 201610130514 | ND |
2016-10-12 | 201610130515 | 0.840 ppb |
2016-10-12 | 201610130516 | ND |
2016-10-12 | 201610130517 | ND |
2016-10-12 | 201610130518 | ND |
2016-10-12 | 201610130519 | 0.940 ppb |
2017-01-25 | 201701270428 | 1.42 ppb |
2017-01-25 | 201701270429 | ND |
2017-01-25 | 201701270430 | 0.960 ppb |
2017-01-25 | 201701270431 | 1.07 ppb |
2017-01-25 | 201701270433 | 0.990 ppb |
2017-01-25 | 201701270434 | 0.590 ppb |
2017-01-25 | 201701270435 | ND |
2017-01-25 | 20171270432 | 1.14 ppb |
2017-02-21 | 201702220928 | 4.50 ppb |
2017-04-24 | 201704260763 | ND |
2017-04-24 | 201704260764 | 0.640 ppb |
2017-04-24 | 201704260765 | ND |
2017-04-24 | 201704260766 | ND |
2017-04-24 | 201704260767 | 1.34 ppb |
2017-04-24 | 201704260768 | 1.24 ppb |
2017-04-24 | 201704260769 | 0.600 ppb |
2017-04-24 | 201704260770 | 2.48 ppb |
2017-05-15 | 201705160571 | ND |
2017-05-16 | 201705170782-VOC | ND |
2017-05-23 | 201705240769 | ND |
2017-06-21 | 201706220614 | ND |
2017-07-18 | 201707190690 | 0.620 ppb |
2017-07-18 | 201707190691 | ND |
2017-07-18 | 201707190692 | ND |
2017-07-18 | 201707190693 | ND |
2017-07-18 | 201707190694 | 0.570 ppb |
2017-07-18 | 201707190695 | ND |
2017-07-18 | 201707190696 | 0.770 ppb |
2017-07-18 | 201707190697 | ND |
2017-10-05 | 201710060150 | 4.27 ppb |
2017-10-05 | 201710060152 | ND |
2017-10-05 | 201710060153 | ND |
2017-10-05 | 201710060154 | ND |
2017-10-05 | 201710060155 | 0.520 ppb |
2017-10-05 | 201710060156 | 0.500 ppb |
2017-10-05 | 201710060157 | ND |
2017-10-16 | 201710170612 | ND |
2018-02-27 | 201802280432 | 4.73 ppb |
2018-02-27 | 201802280435 | ND |
2018-02-27 | 201802280436 | ND |
2018-02-27 | 201802280437 | ND |
2018-02-27 | 201802280438 | ND |
2018-02-27 | 201802280439 | ND |
2018-02-27 | 201802280440 | ND |
2018-02-27 | 201802280441 | 2.58 ppb |
2018-04-26 | 201804300373 | ND |
2018-05-10 | 201805110639 | 5.45 ppb |
2018-05-10 | 201805110640 | 0.810 ppb |
2018-05-10 | 201805110641 | ND |
2018-05-10 | 201805110642 | ND |
2018-05-10 | 201805110643 | ND |
2018-05-10 | 201805110644 | ND |
2018-05-10 | 201805110645 | ND |
2018-05-10 | 201805110646 | 1.20 ppb |
2018-05-15 | 201805161020 | ND |
2018-05-24 | 201805250730 | ND |
2018-05-30 | 201805310575 | ND |
2018-05-31 | 201806010519 | ND |
2018-07-23 | 201807240376 | ND |
2018-07-24 | 201807260438 | 4.34 ppb |
2018-07-24 | 201807260439 | 0.590 ppb |
2018-07-24 | 201807260440 | ND |
2018-07-24 | 201807260441 | ND |
2018-07-24 | 201807260442 | ND |
2018-07-24 | 201807260443 | ND |
2018-07-24 | 201807260444 | 1.04 ppb |
2018-07-24 | 201807260445 | 0.660 ppb |
2018-08-09 | 201808110163 | ND |
2018-08-14 | 201808160451 | ND |
2018-08-14 | 201808160455 | ND |
2018-09-13 | 201809140770 | ND |
2018-09-13 | 201809140813-VOC | ND |
2018-09-18 | 201809190678 | ND |
2018-09-19 | 201809200852 | ND |
2018-10-16 | 201810170779 | ND |
2018-10-16 | 201810170780 | ND |
2018-10-16 | 201810180738A | ND |
2018-10-16 | 201810180748A | ND |
2018-10-17 | 201810190329A | ND |
2018-10-18 | 201810190370A | ND |
2018-10-18 | 201810190600 | 2.72 ppb |
2018-10-18 | 201810190601 | 0.500 ppb |
2018-10-18 | 201810190602 | 0.600 ppb |
2018-10-18 | 201810190603 | ND |
2018-10-18 | 201810190604 | 0.670 ppb |
2018-10-18 | 201810190605 | 0.530 ppb |
2018-10-18 | 201810190606 | 0.600 ppb |
2018-10-18 | 201810190607 | 0.540 ppb |
2018-11-26 | 201811270444 | ND |
2019-01-23 | 201901240427 | 6.49 ppb |
2019-01-23 | 201901240428 | ND |
2019-01-23 | 201901240429 | ND |
2019-01-23 | 201901240430 | ND |
2019-01-23 | 201901240431 | ND |
2019-01-23 | 201901240432 | ND |
2019-01-23 | 201901240433 | ND |
2019-01-23 | 201901240434 | 0.500 ppb |
2019-04-23 | 201904250221 | 1.74 ppb |
2019-04-23 | 201904250222 | ND |
2019-04-23 | 201904250223 | ND |
2019-04-23 | 201904250224 | 2.63 ppb |
2019-04-24 | 201904250225 | ND |
2019-04-24 | 201904250226 | ND |
2019-04-24 | 201904250227 | 0.590 ppb |
2019-04-24 | 201904250228 | ND |
2019-06-24 | 201906250202A | ND |
2019-06-26 | 201906270391 | ND |
2019-07-23 | 201907240474 | 2.38 ppb |
2019-07-23 | 201907240475 | ND |
2019-07-23 | 201907240476 | ND |
2019-07-23 | 201907240477 | 0.530 ppb |
2019-07-23 | 201907240478 | ND |
2019-07-23 | 201907240479 | 1.35 ppb |
2019-07-23 | 201907240480 | 0.590 ppb |
2019-07-23 | 201907240481 | 0.590 ppb |
2019-08-21 | 201908220455A | ND |
2019-08-22 | 201908230667A | ND |
2019-09-24 | 201909250291 | ND |
2019-09-24 | 201909250649A | ND |
2019-10-22 | 201910230717 | 4.96 ppb |
2019-10-22 | 201910230718 | 0.510 ppb |
2019-10-22 | 201910230719 | ND |
2019-10-22 | 201910230720 | 0.660 ppb |
2019-10-22 | 201910230721 | ND |
2019-10-22 | 201910230722 | 0.980 ppb |
2019-10-22 | 201910230723 | 0.660 ppb |
2019-10-22 | 201910230724 | ND |