Bromoform
Carson City Public Works
Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform 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 | 0.227 ppb | 36 | 7 | ND - 1.94 ppb |
2015 | 0.176 ppb | 58 | 9 | ND - 1.85 ppb |
2016 | 0.475 ppb | 33 | 7 | ND - 4.85 ppb |
2017 | 0.177 ppb | 37 | 3 | ND - 3.30 ppb |
2018 | 0.214 ppb | 52 | 6 | ND - 3.18 ppb |
2019 | 0.345 ppb | 38 | 5 | ND - 4.30 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.5 ppb
The EWG Health Guideline of 0.5 ppb for bromoform 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 | 0.860 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 | 0.670 ppb |
2014-02-24 | 201402260926-V | ND |
2014-04-08 | 201404120248 | 1.56 ppb |
2014-04-08 | 201404120249 | ND |
2014-04-08 | 201404120250 | ND |
2014-04-08 | 201404120251 | ND |
2014-04-08 | 201404120252 | ND |
2014-04-08 | 201404120253 | ND |
2014-04-08 | 201404120254 | ND |
2014-04-08 | 201404120255 | ND |
2014-05-27 | 201405280593-V | ND |
2014-07-01 | 201407020370 | ND |
2014-07-28 | 201407300263 | 1.94 ppb |
2014-07-28 | 201407300264 | ND |
2014-07-28 | 201407300265 | ND |
2014-07-28 | 201407300266 | ND |
2014-07-28 | 201407300267 | ND |
2014-07-28 | 201407300268 | ND |
2014-07-28 | 201407300269 | ND |
2014-07-28 | 201407300270 | 1.32 ppb |
2014-09-04 | 201409050252 | ND |
2014-10-27 | 201410290440 | 0.930 ppb |
2014-10-27 | 201410290441 | ND |
2014-10-27 | 201410290442 | ND |
2014-10-27 | 201410290443 | ND |
2014-10-27 | 201410290444 | ND |
2014-10-27 | 201410290445 | ND |
2014-10-27 | 201410290446 | ND |
2014-10-27 | 201410290447 | 0.900 ppb |
2015-01-26 | 201501280717 | 1.01 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 | 1.85 ppb |
2015-04-28 | 201504300113 | ND |
2015-04-28 | 201504300114 | ND |
2015-04-28 | 201504300115 | ND |
2015-04-28 | 201504300116 | 1.23 ppb |
2015-04-28 | 201504300117 | 0.680 ppb |
2015-04-28 | 201504300118 | ND |
2015-04-28 | 201504300119 | ND |
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 | 1.000 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 | 1.68 ppb |
2015-07-28 | 201507300230 | ND |
2015-07-28 | 201507300231 | ND |
2015-07-28 | 201507300232 | ND |
2015-07-28 | 201507300233 | 0.980 ppb |
2015-07-28 | 201507300234 | 1.24 ppb |
2015-07-28 | 201507300235 | ND |
2015-07-28 | 201507300236 | ND |
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 | ND |
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 | 0.550 ppb |
2015-10-12 | 201510140546 | ND |
2016-01-20 | 201601220225 | 1.49 ppb |
2016-01-20 | 201601220226 | ND |
2016-01-20 | 201601220227 | ND |
2016-01-20 | 201601220228 | 2.21 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 | 2.00 ppb |
2016-04-26 | 201604280379 | ND |
2016-04-26 | 201604280380 | ND |
2016-04-26 | 201604280381 | 0.920 ppb |
2016-04-26 | 201604280382 | ND |
2016-04-26 | 201604280383 | ND |
2016-04-27 | 201604280384 | ND |
2016-04-27 | 201604280385 | ND |
2016-06-22 | 201606230265-VOC | ND |
2016-07-27 | 20160280420 | 3.39 ppb |
2016-07-27 | 201607280421 | ND |
2016-07-27 | 201607280422 | ND |
2016-07-27 | 201607280423 | ND |
2016-07-27 | 201607280424 | ND |
2016-07-27 | 201607280425 | ND |
2016-07-27 | 201607280426 | ND |
2016-07-27 | 201607280430 | ND |
2016-10-12 | 201610130512 | 4.85 ppb |
2016-10-12 | 201610130513 | ND |
2016-10-12 | 201610130514 | ND |
2016-10-12 | 201610130515 | ND |
2016-10-12 | 201610130516 | ND |
2016-10-12 | 201610130517 | ND |
2016-10-12 | 201610130518 | ND |
2016-10-12 | 201610130519 | 0.820 ppb |
2017-01-25 | 201701270428 | ND |
2017-01-25 | 201701270429 | ND |
2017-01-25 | 201701270430 | ND |
2017-01-25 | 201701270431 | ND |
2017-01-25 | 201701270433 | ND |
2017-01-25 | 201701270434 | ND |
2017-01-25 | 201701270435 | ND |
2017-01-25 | 20171270432 | ND |
2017-02-21 | 201702220928 | 1.64 ppb |
2017-04-24 | 201704260763 | ND |
2017-04-24 | 201704260764 | ND |
2017-04-24 | 201704260765 | ND |
2017-04-24 | 201704260766 | ND |
2017-04-24 | 201704260767 | ND |
2017-04-24 | 201704260768 | ND |
2017-04-24 | 201704260769 | ND |
2017-04-24 | 201704260770 | 1.62 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 | ND |
2017-07-18 | 201707190691 | ND |
2017-07-18 | 201707190692 | ND |
2017-07-18 | 201707190693 | ND |
2017-07-18 | 201707190694 | ND |
2017-07-18 | 201707190695 | ND |
2017-07-18 | 201707190696 | ND |
2017-07-18 | 201707190697 | ND |
2017-10-05 | 201710060150 | 3.30 ppb |
2017-10-05 | 201710060152 | ND |
2017-10-05 | 201710060153 | ND |
2017-10-05 | 201710060154 | ND |
2017-10-05 | 201710060155 | ND |
2017-10-05 | 201710060156 | ND |
2017-10-05 | 201710060157 | ND |
2017-10-16 | 201710170612 | ND |
2018-02-27 | 201802280432 | 1.66 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 | 1.41 ppb |
2018-04-26 | 201804300373 | ND |
2018-05-10 | 201805110639 | 2.16 ppb |
2018-05-10 | 201805110640 | ND |
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 | 0.500 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 | 3.18 ppb |
2018-07-24 | 201807260439 | ND |
2018-07-24 | 201807260440 | ND |
2018-07-24 | 201807260441 | ND |
2018-07-24 | 201807260442 | ND |
2018-07-24 | 201807260443 | ND |
2018-07-24 | 201807260444 | ND |
2018-07-24 | 201807260445 | ND |
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 | 2.20 ppb |
2018-10-18 | 201810190601 | ND |
2018-10-18 | 201810190602 | ND |
2018-10-18 | 201810190603 | ND |
2018-10-18 | 201810190604 | ND |
2018-10-18 | 201810190605 | ND |
2018-10-18 | 201810190606 | ND |
2018-10-18 | 201810190607 | ND |
2018-11-26 | 201811270444 | ND |
2019-01-23 | 201901240427 | 3.67 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 | ND |
2019-04-23 | 201904250221 | 1.07 ppb |
2019-04-23 | 201904250222 | ND |
2019-04-23 | 201904250223 | ND |
2019-04-23 | 201904250224 | 1.91 ppb |
2019-04-24 | 201904250225 | ND |
2019-04-24 | 201904250226 | ND |
2019-04-24 | 201904250227 | ND |
2019-04-24 | 201904250228 | ND |
2019-06-24 | 201906250202A | ND |
2019-06-26 | 201906270391 | ND |
2019-07-23 | 201907240474 | 2.15 ppb |
2019-07-23 | 201907240475 | ND |
2019-07-23 | 201907240476 | ND |
2019-07-23 | 201907240477 | ND |
2019-07-23 | 201907240478 | ND |
2019-07-23 | 201907240479 | ND |
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 | 4.30 ppb |
2019-10-22 | 201910230718 | ND |
2019-10-22 | 201910230719 | ND |
2019-10-22 | 201910230720 | ND |
2019-10-22 | 201910230721 | ND |
2019-10-22 | 201910230722 | ND |
2019-10-22 | 201910230723 | ND |
2019-10-22 | 201910230724 | ND |