Bromoform
City of San Angelo
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 11.7 ppb | 41 | 33 | ND - 22.8 ppb |
2015 | 15.3 ppb | 33 | 33 | 4.80 ppb - 27.7 ppb |
2016 | 25.0 ppb | 36 | 36 | 9.90 ppb - 49.3 ppb |
2017 | 26.8 ppb | 33 | 33 | 10.1 ppb - 38.0 ppb |
2018 | 20.0 ppb | 33 | 33 | 11.5 ppb - 30.0 ppb |
2019 | 14.1 ppb | 33 | 33 | 6.08 ppb - 36.1 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 |
---|---|---|
2014-02-25 | AC44451 | 16.4 ppb |
2014-02-25 | AC44452 | 18.7 ppb |
2014-02-25 | AC44453 | 19.0 ppb |
2014-02-25 | AC44458 | 18.0 ppb |
2014-02-25 | AC44455 | 22.8 ppb |
2014-02-25 | AC44456 | 15.4 ppb |
2014-02-25 | AC44459 | 15.8 ppb |
2014-02-25 | AC44471 | 21.8 ppb |
2014-04-29 | AC52176 | 14.8 ppb |
2014-04-29 | AC52180 | 14.4 ppb |
2014-04-29 | AC52177 | 15.7 ppb |
2014-04-29 | AC52174 | 15.7 ppb |
2014-04-29 | AC52175 | 15.3 ppb |
2014-04-29 | AC52173 | 11.7 ppb |
2014-04-29 | AC52178 | 14.7 ppb |
2014-04-29 | AC52179 | 10.7 ppb |
2014-04-29 | AC52071 | ND |
2014-04-29 | AC52039 | ND |
2014-04-29 | AC52059 | ND |
2014-04-29 | AC52037 | ND |
2014-04-29 | AC52063 | ND |
2014-04-29 | AC52065 | ND |
2014-04-29 | AC52067 | ND |
2014-04-29 | AC52069 | ND |
2014-08-11 | AC63095 | 7.50 ppb |
2014-08-11 | AC63232 | 16.0 ppb |
2014-08-11 | AC63260 | 15.8 ppb |
2014-08-11 | AC63259 | 16.2 ppb |
2014-08-11 | AC63208 | 9.00 ppb |
2014-08-11 | AC63204 | 15.3 ppb |
2014-08-11 | AC63209 | 14.2 ppb |
2014-08-11 | AC63203 | 17.0 ppb |
2014-08-11 | AC63202 | 15.8 ppb |
2014-11-10 | AC71736 | 13.3 ppb |
2014-11-10 | AC71733 | 6.20 ppb |
2014-11-10 | AC71735 | 13.8 ppb |
2014-11-10 | AC71732 | 6.90 ppb |
2014-11-10 | AC71734 | 13.7 ppb |
2014-11-10 | AC71730 | 13.1 ppb |
2014-11-10 | AC71739 | 12.8 ppb |
2014-11-10 | AC71737 | 13.3 ppb |
2015-02-02 | AC78690 | 27.7 ppb |
2015-02-02 | AC78691 | 23.1 ppb |
2015-02-02 | AC78705 | 17.0 ppb |
2015-02-02 | AC78689 | 26.6 ppb |
2015-02-02 | AC78707 | 25.5 ppb |
2015-02-02 | AC78706 | 19.9 ppb |
2015-02-02 | AC78704 | 23.9 ppb |
2015-02-02 | AC78703 | 24.7 ppb |
2015-05-18 | AC92308 | 6.70 ppb |
2015-05-18 | AC92311 | 5.90 ppb |
2015-05-18 | AC92303 | 4.80 ppb |
2015-05-18 | AC92312 | 7.60 ppb |
2015-05-18 | AC92305 | 7.40 ppb |
2015-05-18 | AC92306 | 6.40 ppb |
2015-05-18 | AC92309 | 7.50 ppb |
2015-05-18 | AC92307 | 8.00 ppb |
2015-08-12 | AD03968 | 7.00 ppb |
2015-08-12 | AD03959 | 16.5 ppb |
2015-08-12 | AD03964 | 16.9 ppb |
2015-08-12 | AD03961 | 14.3 ppb |
2015-08-12 | AD03966 | 16.4 ppb |
2015-08-12 | AD03963 | 18.3 ppb |
2015-08-12 | AD03960 | 16.8 ppb |
2015-08-12 | AD03965 | 17.1 ppb |
2015-08-12 | AD03957 | 17.6 ppb |
2015-11-05 | AD12760 | 16.3 ppb |
2015-11-05 | AD12755 | 14.8 ppb |
2015-11-05 | AD12762 | 13.1 ppb |
2015-11-05 | AD12761 | 15.9 ppb |
2015-11-05 | AD12758 | 17.0 ppb |
2015-11-05 | AD12754 | 12.6 ppb |
2015-11-05 | AD12752 | 15.7 ppb |
2015-11-05 | AD12756 | 17.0 ppb |
2016-02-17 | AD24256 | 49.3 ppb |
2016-02-17 | AD24252 | 40.9 ppb |
2016-02-17 | AD24250 | 24.4 ppb |
2016-02-17 | AD24283 | 24.7 ppb |
2016-02-17 | AD24285 | 27.1 ppb |
2016-02-17 | AD24281 | 23.0 ppb |
2016-02-17 | AD24257 | 32.5 ppb |
2016-02-17 | AD24253 | 32.6 ppb |
2016-02-17 | AD24323 | 27.0 ppb |
2016-05-17 | AD37015 | 27.6 ppb |
2016-05-17 | AD37021 | 27.6 ppb |
2016-05-17 | AD37016 | 27.9 ppb |
2016-05-17 | AD37014 | 36.9 ppb |
2016-05-17 | AD37020 | 26.1 ppb |
2016-05-17 | AD37018 | 30.0 ppb |
2016-05-17 | AD37019 | 25.9 ppb |
2016-05-17 | AD37017 | 24.6 ppb |
2016-05-17 | AD37069 | 11.0 ppb |
2016-07-20 | AD44891 | 15.2 ppb |
2016-07-20 | AD44885 | 19.0 ppb |
2016-07-20 | AD44883 | 9.90 ppb |
2016-07-20 | AD44887 | 18.1 ppb |
2016-07-20 | AD44888 | 17.2 ppb |
2016-07-20 | AD44889 | 17.3 ppb |
2016-07-20 | AD44882 | 16.3 ppb |
2016-07-20 | AD44890 | 18.0 ppb |
2016-07-20 | AD45007 | 11.0 ppb |
2016-11-09 | AD57349 | 19.6 ppb |
2016-11-09 | AD57340 | 26.9 ppb |
2016-11-09 | AD57345 | 25.9 ppb |
2016-11-09 | AD57348 | 31.8 ppb |
2016-11-09 | AD57350 | 26.4 ppb |
2016-11-09 | AD57343 | 27.2 ppb |
2016-11-09 | AD57353 | 32.1 ppb |
2016-11-09 | AD57351 | 28.5 ppb |
2016-11-09 | AD57412 | 21.0 ppb |
2017-02-22 | Q1707695001 | 27.8 ppb |
2017-02-22 | Q1707695002 | 15.1 ppb |
2017-02-22 | Q1707695003 | 10.1 ppb |
2017-02-22 | Q1707695004 | 21.8 ppb |
2017-02-22 | Q1707695005 | 21.6 ppb |
2017-02-22 | Q1707695006 | 17.2 ppb |
2017-02-22 | Q1707695007 | 24.6 ppb |
2017-02-22 | Q1707695008 | 23.0 ppb |
2017-05-09 | Q1719085002 | 18.2 ppb |
2017-05-09 | Q1719085007 | 24.5 ppb |
2017-05-09 | Q1719085008 | 22.9 ppb |
2017-05-09 | Q1719085009 | 26.0 ppb |
2017-05-09 | Q1719085010 | 24.5 ppb |
2017-05-09 | Q1719085011 | 30.2 ppb |
2017-05-09 | Q1719085012 | 23.1 ppb |
2017-05-09 | Q1719085013 | 24.2 ppb |
2017-05-09 | Q1719085014 | 23.4 ppb |
2017-07-26 | Q1731197005 | 30.6 ppb |
2017-07-26 | Q1731197001 | 38.0 ppb |
2017-07-26 | Q1731197006 | 31.6 ppb |
2017-07-26 | Q1731197002 | 32.2 ppb |
2017-07-26 | Q1731197003 | 35.7 ppb |
2017-07-26 | Q1731197007 | 32.1 ppb |
2017-07-26 | Q1731197004 | 34.0 ppb |
2017-07-26 | Q1731197008 | 34.5 ppb |
2017-11-01 | Q1756358005 | 30.6 ppb |
2017-11-01 | Q1756358001 | 34.1 ppb |
2017-11-01 | Q1756358006 | 26.8 ppb |
2017-11-01 | Q1756358002 | 27.4 ppb |
2017-11-01 | Q1756358007 | 29.6 ppb |
2017-11-01 | Q1756358003 | 27.6 ppb |
2017-11-01 | Q1756358008 | 31.1 ppb |
2017-11-01 | Q1756358004 | 31.6 ppb |
2018-02-28 | Q1808687007 | 20.4 ppb |
2018-02-28 | Q1808687011 | 23.6 ppb |
2018-02-28 | Q1808687002 | 24.7 ppb |
2018-02-28 | Q1808687012 | 30.0 ppb |
2018-02-28 | Q1808687004 | 28.8 ppb |
2018-02-28 | Q1808687013 | 27.6 ppb |
2018-02-28 | Q1808687005 | 27.8 ppb |
2018-02-28 | Q1808687014 | 28.7 ppb |
2018-02-28 | Q1808687006 | 25.7 ppb |
2018-04-24 | Q1816854004 | 19.9 ppb |
2018-04-24 | Q1816854001 | 20.5 ppb |
2018-04-24 | Q1816854005 | 18.3 ppb |
2018-04-24 | Q1816854002 | 19.5 ppb |
2018-04-24 | Q1816854006 | 19.2 ppb |
2018-04-24 | Q1816854007 | 18.2 ppb |
2018-04-24 | Q1816854003 | 18.8 ppb |
2018-04-24 | Q1816854008 | 19.8 ppb |
2018-07-17 | Q1828262003 | 21.3 ppb |
2018-07-17 | Q1828262008 | 19.2 ppb |
2018-07-17 | Q1828262004 | 19.9 ppb |
2018-07-17 | Q1828262001 | 22.1 ppb |
2018-07-17 | Q1828262005 | 21.3 ppb |
2018-07-17 | Q1828262002 | 20.7 ppb |
2018-07-17 | Q1828262006 | 19.6 ppb |
2018-07-17 | Q1828262007 | 23.2 ppb |
2018-12-04 | Q1849376004 | 11.5 ppb |
2018-12-04 | Q1849376003 | 11.9 ppb |
2018-12-04 | Q1849376005 | 12.4 ppb |
2018-12-04 | Q1849376001 | 12.7 ppb |
2018-12-04 | Q1849376006 | 11.6 ppb |
2018-12-04 | Q1849376007 | 12.9 ppb |
2018-12-04 | Q1849376002 | 11.9 ppb |
2018-12-04 | Q1849376008 | 15.4 ppb |
2019-03-06 | Q1909518006 | 14.1 ppb |
2019-03-06 | Q1909518007 | 15.6 ppb |
2019-03-06 | Q1909518003 | 15.4 ppb |
2019-03-06 | Q1909518008 | 11.0 ppb |
2019-03-06 | Q1909518004 | 18.4 ppb |
2019-03-06 | Q1909518001 | 14.4 ppb |
2019-03-06 | Q1909518005 | 15.7 ppb |
2019-03-06 | Q1909518002 | 36.1 ppb |
2019-05-07 | Q1920785002 | 6.84 ppb |
2019-05-07 | Q1920785011 | 11.0 ppb |
2019-05-07 | Q1920785012 | 11.6 ppb |
2019-05-07 | Q1920785013 | 11.2 ppb |
2019-05-07 | Q1920785014 | 12.5 ppb |
2019-05-07 | Q1920785015 | 12.8 ppb |
2019-05-07 | Q1920785016 | 9.49 ppb |
2019-05-07 | Q1920785017 | 12.2 ppb |
2019-05-07 | Q1920785018 | 11.4 ppb |
2019-07-18 | Q1946080001 | 8.81 ppb |
2019-07-18 | Q1946080002 | 8.59 ppb |
2019-07-18 | Q1946080003 | 6.08 ppb |
2019-07-18 | Q1946080004 | 8.33 ppb |
2019-07-18 | Q1946080005 | 10.7 ppb |
2019-07-18 | Q1946080006 | 6.84 ppb |
2019-07-18 | Q1946080007 | 8.25 ppb |
2019-07-18 | Q1946080008 | 8.57 ppb |
2019-11-04 | Q1975101005 | 17.9 ppb |
2019-11-04 | Q1975101006 | 17.5 ppb |
2019-11-04 | Q1975101007 | 21.7 ppb |
2019-11-04 | Q1975101008 | 21.9 ppb |
2019-11-04 | Q1975101001 | 21.6 ppb |
2019-11-04 | Q1975101002 | 19.6 ppb |
2019-11-04 | Q1975101003 | 19.1 ppb |
2019-11-04 | Q1975101004 | 18.6 ppb |