Bromoform
Roswell Municipal Water System
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.
94
Samples
0
Samples exceeding legal limit (MCL)
85
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 1.52 ppb | 16 | 16 | 0.500 ppb - 7.10 ppb |
| 2015 | 2.23 ppb | 16 | 16 | 0.650 ppb - 5.70 ppb |
| 2016 | 1.74 ppb | 16 | 16 | 0.450 ppb - 5.10 ppb |
| 2017 | 1.67 ppb | 16 | 16 | 0.690 ppb - 4.00 ppb |
| 2018 | 0.819 ppb | 14 | 14 | 0.340 ppb - 1.40 ppb |
| 2019 | 1.10 ppb | 16 | 16 | 0.480 ppb - 2.60 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 |
|---|---|---|
| 2014-02-19 | 2014005814 | 1.60 ppb |
| 2014-02-19 | 2014005815 | 1.40 ppb |
| 2014-02-19 | 2014005813 | 0.820 ppb |
| 2014-02-19 | 2014005812 | 7.10 ppb |
| 2014-04-22 | 2014013874 | 2.40 ppb |
| 2014-04-22 | 2014013875 | 1.20 ppb |
| 2014-04-22 | 2014013877 | 0.550 ppb |
| 2014-04-22 | 2014013876 | 0.520 ppb |
| 2014-07-24 | 2014023525 | 0.840 ppb |
| 2014-07-24 | 2014023528 | 1.000 ppb |
| 2014-07-24 | 2014023526 | 1.10 ppb |
| 2014-07-24 | 2014023527 | 1.60 ppb |
| 2014-10-22 | 2014033287 | 1.70 ppb |
| 2014-10-22 | 2014033286 | 1.10 ppb |
| 2014-10-22 | 2014033288 | 0.920 ppb |
| 2014-10-22 | 2014033285 | 0.500 ppb |
| 2015-01-20 | 2015002205 | 4.00 ppb |
| 2015-01-20 | 2015002208 | 2.30 ppb |
| 2015-01-20 | 2015002207 | 1.80 ppb |
| 2015-01-20 | 2015002206 | 1.60 ppb |
| 2015-04-14 | 2015011526 | 0.960 ppb |
| 2015-04-14 | 2015011525 | 1.10 ppb |
| 2015-04-14 | 2015011524 | 2.40 ppb |
| 2015-04-14 | 2015011523 | 4.50 ppb |
| 2015-07-14 | 2015020440 | 1.60 ppb |
| 2015-07-14 | 2015020441 | 1.20 ppb |
| 2015-07-14 | 2015020439 | 1.000 ppb |
| 2015-07-14 | 2015020438 | 2.00 ppb |
| 2015-10-27 | 2015032263 | 5.70 ppb |
| 2015-10-27 | 2015032264 | 2.90 ppb |
| 2015-10-27 | 2015032262 | 1.90 ppb |
| 2015-10-27 | 2015032261 | 0.650 ppb |
| 2016-01-26 | 2016002557 | 1.60 ppb |
| 2016-01-26 | 2016002556 | 2.10 ppb |
| 2016-01-26 | 2016002558 | 2.70 ppb |
| 2016-01-27 | 2016002555 | 5.10 ppb |
| 2016-04-20 | 2016011291 | 2.80 ppb |
| 2016-04-20 | 2016011289 | 1.90 ppb |
| 2016-04-20 | 2016011290 | 1.000 ppb |
| 2016-04-20 | 2016011292 | 0.450 ppb |
| 2016-07-25 | 2016021228 | 1.80 ppb |
| 2016-07-25 | 2016021227 | 1.30 ppb |
| 2016-07-25 | 2016021230 | 1.30 ppb |
| 2016-07-25 | 2016021229 | 0.490 ppb |
| 2016-10-17 | 2016030143 | 1.20 ppb |
| 2016-10-17 | 2016030145 | 0.670 ppb |
| 2016-10-17 | 2016030144 | 1.80 ppb |
| 2016-10-17 | 2016030146 | 1.60 ppb |
| 2017-01-17 | 2017001366 | 3.00 ppb |
| 2017-01-17 | 2017001368 | 2.90 ppb |
| 2017-01-17 | 2017001367 | 1.70 ppb |
| 2017-01-17 | 2017001369 | 1.10 ppb |
| 2017-04-17 | 2017011269 | 4.00 ppb |
| 2017-04-17 | 2017011268 | 1.90 ppb |
| 2017-04-17 | 2017011267 | 1.60 ppb |
| 2017-04-17 | 2017011270 | 1.20 ppb |
| 2017-07-25 | 2017021567 | 1.40 ppb |
| 2017-07-25 | 2017021564 | 0.690 ppb |
| 2017-07-25 | 2017021566 | 1.10 ppb |
| 2017-07-25 | 2017021565 | 1.20 ppb |
| 2017-10-26 | 2017030970 | 2.10 ppb |
| 2017-10-26 | 2017030971 | 1.10 ppb |
| 2017-10-26 | 2017030968 | 0.890 ppb |
| 2017-10-26 | 2017030969 | 0.850 ppb |
| 2018-01-18 | 2018001892 | 0.980 ppb |
| 2018-01-18 | 2018001891 | 1.40 ppb |
| 2018-01-18 | 2018001890 | 0.490 ppb |
| 2018-04-05 | 2018009845 | 0.340 ppb |
| 2018-04-05 | 2018009844 | 0.690 ppb |
| 2018-04-05 | 2018009843 | 1.30 ppb |
| 2018-07-02 | 2018018267 | 0.830 ppb |
| 2018-07-02 | 2018018266 | 0.920 ppb |
| 2018-07-02 | 2018018265 | 0.450 ppb |
| 2018-07-02 | 2018018268 | 0.360 ppb |
| 2018-10-09 | 2018028897 | 0.920 ppb |
| 2018-10-09 | 2018028898 | 0.390 ppb |
| 2018-10-09 | 2018028899 | 1.10 ppb |
| 2018-10-09 | 2018028900 | 1.30 ppb |
| 2019-01-09 | 2019000681 | 1.000 ppb |
| 2019-01-09 | 2019000682 | 0.910 ppb |
| 2019-01-09 | 2019000683 | 0.670 ppb |
| 2019-01-09 | 2019000684 | 1.20 ppb |
| 2019-04-02 | 2019008479 | 2.50 ppb |
| 2019-04-02 | 2019008480 | 0.700 ppb |
| 2019-04-02 | 2019008481 | 1.000 ppb |
| 2019-04-02 | 2019008478 | 1.20 ppb |
| 2019-07-09 | 2019018727 | 0.740 ppb |
| 2019-07-09 | 2019018730 | 1.20 ppb |
| 2019-07-09 | 2019018729 | 0.830 ppb |
| 2019-07-09 | 2019018728 | 2.60 ppb |
| 2019-10-03 | 2019028342 | 1.20 ppb |
| 2019-10-03 | 2019028341 | 0.480 ppb |
| 2019-10-03 | 2019028340 | 0.660 ppb |
| 2019-10-03 | 2019028339 | 0.640 ppb |