Bromodichloromethane
Carson City Public Works
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 |
---|---|---|---|---|
2014 | 1.16 ppb | 36 | 28 | ND - 5.56 ppb |
2015 | 0.577 ppb | 58 | 26 | ND - 2.93 ppb |
2016 | 0.885 ppb | 33 | 23 | ND - 3.63 ppb |
2017 | 1.16 ppb | 37 | 23 | ND - 4.01 ppb |
2018 | 0.733 ppb | 52 | 23 | ND - 5.44 ppb |
2019 | 0.990 ppb | 37 | 25 | ND - 4.75 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 |
---|---|---|
2014-01-28 | 201401300174 | 5.56 ppb |
2014-01-28 | 201401300175 | 0.940 ppb |
2014-01-28 | 201401300176 | 0.640 ppb |
2014-01-28 | 201401300177 | 1.11 ppb |
2014-01-28 | 201401300178 | 1.48 ppb |
2014-01-28 | 201401300179 | 1.99 ppb |
2014-01-28 | 201401300180 | 1.61 ppb |
2014-01-28 | 201401300181 | 1.86 ppb |
2014-02-24 | 201402260926-V | ND |
2014-04-08 | 201404120248 | 4.55 ppb |
2014-04-08 | 201404120249 | ND |
2014-04-08 | 201404120250 | 0.790 ppb |
2014-04-08 | 201404120251 | 0.720 ppb |
2014-04-08 | 201404120252 | ND |
2014-04-08 | 201404120253 | 0.770 ppb |
2014-04-08 | 201404120254 | 2.01 ppb |
2014-04-08 | 201404120255 | 0.710 ppb |
2014-05-27 | 201405280593-V | 0.810 ppb |
2014-07-01 | 201407020370 | ND |
2014-07-28 | 201407300263 | 2.62 ppb |
2014-07-28 | 201407300264 | 0.700 ppb |
2014-07-28 | 201407300265 | 1.31 ppb |
2014-07-28 | 201407300266 | ND |
2014-07-28 | 201407300267 | 2.04 ppb |
2014-07-28 | 201407300268 | 0.880 ppb |
2014-07-28 | 201407300269 | 1.97 ppb |
2014-07-28 | 201407300270 | 1.03 ppb |
2014-09-04 | 201409050252 | ND |
2014-10-27 | 201410290440 | 1.54 ppb |
2014-10-27 | 201410290441 | ND |
2014-10-27 | 201410290442 | 0.900 ppb |
2014-10-27 | 201410290443 | 0.750 ppb |
2014-10-27 | 201410290444 | 0.770 ppb |
2014-10-27 | 201410290445 | 0.880 ppb |
2014-10-27 | 201410290446 | 0.950 ppb |
2014-10-27 | 201410290447 | ND |
2015-01-26 | 201501280717 | 2.16 ppb |
2015-01-26 | 201501280718 | 0.680 ppb |
2015-01-26 | 201501280719 | 1.03 ppb |
2015-01-26 | 201501280720 | ND |
2015-01-26 | 201501280721 | 1.17 ppb |
2015-01-26 | 201501280722 | 1.41 ppb |
2015-01-26 | 201501280723 | 1.36 ppb |
2015-01-26 | 201501280724 | 1.64 ppb |
2015-04-28 | 201504300112 | 2.93 ppb |
2015-04-28 | 201504300113 | ND |
2015-04-28 | 201504300114 | 1.08 ppb |
2015-04-28 | 201504300115 | 0.650 ppb |
2015-04-28 | 201504300116 | 0.820 ppb |
2015-04-28 | 201504300117 | 2.15 ppb |
2015-04-28 | 201504300118 | ND |
2015-04-28 | 201504300119 | 0.560 ppb |
2015-05-19 | 201505210392V | ND |
2015-05-19 | 201505210480V | 0.520 ppb |
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 | 1.80 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 | 1.84 ppb |
2015-07-28 | 201507300230 | 1.97 ppb |
2015-07-28 | 201507300231 | 1.56 ppb |
2015-07-28 | 201507300232 | ND |
2015-07-28 | 201507300233 | 0.890 ppb |
2015-07-28 | 201507300234 | 1.67 ppb |
2015-07-28 | 201507300235 | 0.740 ppb |
2015-07-28 | 201507300236 | 1.06 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 | 0.790 ppb |
2015-10-12 | 201510140540 | ND |
2015-10-12 | 201510140541 | 1.24 ppb |
2015-10-12 | 201510140542 | ND |
2015-10-12 | 201510140543 | 0.670 ppb |
2015-10-12 | 201510140544 | ND |
2015-10-12 | 201510140545 | 1.05 ppb |
2015-10-12 | 201510140546 | ND |
2016-01-20 | 201601220225 | 2.00 ppb |
2016-01-20 | 201601220226 | 1.12 ppb |
2016-01-20 | 201601220227 | 0.900 ppb |
2016-01-20 | 201601220228 | 2.34 ppb |
2016-01-20 | 201601220229 | 1.15 ppb |
2016-01-20 | 201601220230 | 1.46 ppb |
2016-01-20 | 201601220231 | 1.41 ppb |
2016-01-20 | 201601220232 | 1.59 ppb |
2016-04-26 | 201604280378 | 2.37 ppb |
2016-04-26 | 201604280379 | 0.820 ppb |
2016-04-26 | 201604280380 | 0.780 ppb |
2016-04-26 | 201604280381 | 0.740 ppb |
2016-04-26 | 201604280382 | 1.06 ppb |
2016-04-26 | 201604280383 | ND |
2016-04-27 | 201604280384 | 0.790 ppb |
2016-04-27 | 201604280385 | 1.02 ppb |
2016-06-22 | 201606230265-VOC | 0.640 ppb |
2016-07-27 | 20160280420 | 2.23 ppb |
2016-07-27 | 201607280421 | 0.590 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 | 0.560 ppb |
2016-07-27 | 201607280430 | ND |
2016-10-12 | 201610130512 | 3.63 ppb |
2016-10-12 | 201610130513 | 0.540 ppb |
2016-10-12 | 201610130514 | ND |
2016-10-12 | 201610130515 | 0.880 ppb |
2016-10-12 | 201610130516 | ND |
2016-10-12 | 201610130517 | ND |
2016-10-12 | 201610130518 | ND |
2016-10-12 | 201610130519 | 0.600 ppb |
2017-01-25 | 201701270428 | 3.02 ppb |
2017-01-25 | 201701270429 | ND |
2017-01-25 | 201701270430 | 2.81 ppb |
2017-01-25 | 201701270431 | 2.29 ppb |
2017-01-25 | 201701270433 | 2.55 ppb |
2017-01-25 | 201701270434 | 3.32 ppb |
2017-01-25 | 201701270435 | 1.78 ppb |
2017-01-25 | 20171270432 | 2.61 ppb |
2017-02-21 | 201702220928 | 2.96 ppb |
2017-04-24 | 201704260763 | 4.01 ppb |
2017-04-24 | 201704260764 | 0.740 ppb |
2017-04-24 | 201704260765 | ND |
2017-04-24 | 201704260766 | 0.520 ppb |
2017-04-24 | 201704260767 | 2.16 ppb |
2017-04-24 | 201704260768 | 1.67 ppb |
2017-04-24 | 201704260769 | 0.670 ppb |
2017-04-24 | 201704260770 | 1.50 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 | 3.76 ppb |
2017-07-18 | 201707190691 | 0.560 ppb |
2017-07-18 | 201707190692 | ND |
2017-07-18 | 201707190693 | ND |
2017-07-18 | 201707190694 | 0.610 ppb |
2017-07-18 | 201707190695 | 0.500 ppb |
2017-07-18 | 201707190696 | 0.680 ppb |
2017-07-18 | 201707190697 | ND |
2017-10-05 | 201710060150 | 2.84 ppb |
2017-10-05 | 201710060152 | ND |
2017-10-05 | 201710060153 | ND |
2017-10-05 | 201710060154 | ND |
2017-10-05 | 201710060155 | 0.680 ppb |
2017-10-05 | 201710060156 | 0.700 ppb |
2017-10-05 | 201710060157 | ND |
2017-10-16 | 201710170612 | ND |
2018-02-27 | 201802280432 | 5.44 ppb |
2018-02-27 | 201802280435 | 1.41 ppb |
2018-02-27 | 201802280436 | ND |
2018-02-27 | 201802280437 | 1.91 ppb |
2018-02-27 | 201802280438 | 1.31 ppb |
2018-02-27 | 201802280439 | 1.73 ppb |
2018-02-27 | 201802280440 | 1.95 ppb |
2018-02-27 | 201802280441 | 1.74 ppb |
2018-04-26 | 201804300373 | ND |
2018-05-10 | 201805110639 | 5.02 ppb |
2018-05-10 | 201805110640 | 1.13 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 | 1.39 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 | 2.53 ppb |
2018-07-24 | 201807260439 | 2.50 ppb |
2018-07-24 | 201807260440 | 1.65 ppb |
2018-07-24 | 201807260441 | ND |
2018-07-24 | 201807260442 | 0.540 ppb |
2018-07-24 | 201807260443 | ND |
2018-07-24 | 201807260444 | 1.05 ppb |
2018-07-24 | 201807260445 | 0.580 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 | 1.82 ppb |
2018-10-18 | 201810190601 | ND |
2018-10-18 | 201810190602 | 0.770 ppb |
2018-10-18 | 201810190603 | 0.630 ppb |
2018-10-18 | 201810190604 | 0.760 ppb |
2018-10-18 | 201810190605 | 0.710 ppb |
2018-10-18 | 201810190606 | 0.810 ppb |
2018-10-18 | 201810190607 | 0.710 ppb |
2018-11-26 | 201811270444 | ND |
2019-01-23 | 201901240427 | 4.75 ppb |
2019-01-23 | 201901240428 | 1.000 ppb |
2019-01-23 | 201901240429 | ND |
2019-01-23 | 201901240430 | 0.760 ppb |
2019-01-23 | 201901240431 | 1.18 ppb |
2019-01-23 | 201901240432 | 1.51 ppb |
2019-01-23 | 201901240433 | 1.22 ppb |
2019-01-23 | 201901240434 | ND |
2019-04-23 | 201904250221 | 1.16 ppb |
2019-04-23 | 201904250222 | 1.96 ppb |
2019-04-23 | 201904250223 | 1.36 ppb |
2019-04-23 | 201904250224 | 1.76 ppb |
2019-04-24 | 201904250225 | 2.18 ppb |
2019-04-24 | 201904250226 | 1.98 ppb |
2019-04-24 | 201904250227 | 2.17 ppb |
2019-04-24 | 201904250228 | 1.27 ppb |
2019-06-24 | 201906250202A | 0.530 ppb |
2019-06-26 | 201906270391 | ND |
2019-07-23 | 201907240474 | 1.22 ppb |
2019-07-23 | 201907240475 | 1.60 ppb |
2019-07-23 | 201907240476 | 0.860 ppb |
2019-07-23 | 201907240477 | 1.08 ppb |
2019-07-23 | 201907240478 | 0.690 ppb |
2019-07-23 | 201907240479 | 1.42 ppb |
2019-07-23 | 201907240480 | ND |
2019-07-23 | 201907240481 | ND |
2019-08-21 | 201908220455A | ND |
2019-08-22 | 201908230667A | ND |
2019-09-24 | 201909250291 | ND |
2019-09-24 | 201909250649A | ND |
2019-10-22 | 201910230717 | 2.54 ppb |
2019-10-22 | 201910230719 | 0.880 ppb |
2019-10-22 | 201910230720 | ND |
2019-10-22 | 201910230721 | ND |
2019-10-22 | 201910230722 | 0.920 ppb |
2019-10-22 | 201910230723 | 0.640 ppb |
2019-10-22 | 201910230724 | ND |