Bromoform
Fond Du Lac Waterworks
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.
120
Samples
0
Samples exceeding legal limit (MCL)
116
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 16.7 ppb | 19 | 19 | 0.580 ppb - 51.0 ppb |
| 2015 | 16.3 ppb | 21 | 21 | 0.500 ppb - 33.0 ppb |
| 2016 | 14.6 ppb | 18 | 17 | ND - 32.0 ppb |
| 2017 | 19.6 ppb | 21 | 21 | 0.670 ppb - 43.0 ppb |
| 2018 | 13.2 ppb | 23 | 23 | 0.230 ppb - 43.0 ppb |
| 2019 | 17.1 ppb | 18 | 18 | 8.00 ppb - 35.0 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 |
|---|---|---|
| 2014-02-17 | 770785 | 12.0 ppb |
| 2014-02-17 | 770783 | 14.0 ppb |
| 2014-02-18 | 771010 | 0.890 ppb |
| 2014-02-18 | 771007 | 1.40 ppb |
| 2014-04-14 | 780745 | 1.10 ppb |
| 2014-05-14 | 785687 | 13.0 ppb |
| 2014-05-14 | 785686 | 18.0 ppb |
| 2014-05-14 | 785685 | 21.0 ppb |
| 2014-05-14 | 785684 | 25.0 ppb |
| 2014-07-21 | 804444 | 9.60 ppb |
| 2014-08-12 | 809931 | 19.0 ppb |
| 2014-08-12 | 809930 | 31.0 ppb |
| 2014-08-12 | 809929 | 33.0 ppb |
| 2014-08-12 | 809928 | 51.0 ppb |
| 2014-10-29 | 828515 | 0.580 ppb |
| 2014-11-11 | 830917 | 11.0 ppb |
| 2014-11-11 | 830916 | 16.0 ppb |
| 2014-11-11 | 830915 | 17.0 ppb |
| 2014-11-11 | 830914 | 23.0 ppb |
| 2015-02-03 | 841707 | 1.000 ppb |
| 2015-02-03 | 841710 | 1.30 ppb |
| 2015-02-16 | 843832 | 17.0 ppb |
| 2015-02-16 | 843830 | 18.0 ppb |
| 2015-02-16 | 843831 | 28.0 ppb |
| 2015-02-16 | 843829 | 33.0 ppb |
| 2015-04-21 | 855442 | 0.500 ppb |
| 2015-05-18 | 860211 | 11.0 ppb |
| 2015-05-18 | 860209 | 17.0 ppb |
| 2015-05-18 | 860210 | 22.0 ppb |
| 2015-05-18 | 860208 | 23.0 ppb |
| 2015-07-20 | 871829 | 0.790 ppb |
| 2015-08-17 | 877446 | 20.0 ppb |
| 2015-08-17 | 877448 | 23.0 ppb |
| 2015-08-17 | 877447 | 26.0 ppb |
| 2015-08-17 | 877445 | 28.0 ppb |
| 2015-10-27 | 891260 | 1.20 ppb |
| 2015-11-11 | 893801 | 10.00 ppb |
| 2015-11-11 | 893799 | 16.0 ppb |
| 2015-11-11 | 893800 | 20.0 ppb |
| 2015-11-11 | 893798 | 25.0 ppb |
| 2016-01-22 | 902600 | ND |
| 2016-02-15 | 905420 | 13.0 ppb |
| 2016-02-15 | 905422 | 14.0 ppb |
| 2016-02-15 | 905421 | 16.0 ppb |
| 2016-02-15 | 905419 | 23.0 ppb |
| 2016-03-08 | 908868 | 1.000 ppb |
| 2016-03-08 | 908871 | 1.10 ppb |
| 2016-04-06 | 914177 | 0.390 ppb |
| 2016-08-15 | 939248 | 15.0 ppb |
| 2016-08-15 | 939250 | 17.0 ppb |
| 2016-08-15 | 939249 | 25.0 ppb |
| 2016-08-15 | 939247 | 28.0 ppb |
| 2016-09-26 | 948632 | 12.0 ppb |
| 2016-11-14 | 958940 | 19.0 ppb |
| 2016-11-14 | 958942 | 20.0 ppb |
| 2016-11-14 | 958941 | 24.0 ppb |
| 2016-11-14 | 958939 | 32.0 ppb |
| 2016-11-28 | 961245 | 1.50 ppb |
| 2017-02-13 | 973446 | 12.0 ppb |
| 2017-02-13 | 973444 | 13.0 ppb |
| 2017-02-13 | 973445 | 13.0 ppb |
| 2017-02-13 | 973443 | 25.0 ppb |
| 2017-02-14 | 973636 | 0.950 ppb |
| 2017-03-06 | 976159 | 1.50 ppb |
| 2017-04-24 | 985200 | 0.670 ppb |
| 2017-05-15 | 990471 | 17.0 ppb |
| 2017-05-15 | 990470 | 18.0 ppb |
| 2017-05-15 | 990472 | 18.0 ppb |
| 2017-05-15 | 990469 | 43.0 ppb |
| 2017-07-26 | 1006861 | 8.70 ppb |
| 2017-08-16 | 1011998 | 23.0 ppb |
| 2017-08-16 | 1012000 | 24.0 ppb |
| 2017-08-16 | 1011999 | 25.0 ppb |
| 2017-08-16 | 1011997 | 37.0 ppb |
| 2017-10-09 | 1023185 | 9.80 ppb |
| 2017-11-13 | 1029591 | 20.0 ppb |
| 2017-11-13 | 1029590 | 29.0 ppb |
| 2017-11-13 | 1029592 | 33.0 ppb |
| 2017-11-13 | 1029593 | 39.0 ppb |
| 2018-02-13 | 1040803 | 9.80 ppb |
| 2018-02-13 | 1040802 | 10.00 ppb |
| 2018-02-13 | 1040801 | 10.00 ppb |
| 2018-02-13 | 1040800 | 14.0 ppb |
| 2018-02-21 | 1042067 | 0.540 ppb |
| 2018-02-21 | 1042069 | 0.640 ppb |
| 2018-02-21 | 1042065 | 8.90 ppb |
| 2018-04-11 | 1049883 | 0.550 ppb |
| 2018-04-11 | 1049881 | 0.920 ppb |
| 2018-05-14 | 1055389 | 17.0 ppb |
| 2018-05-14 | 1055387 | 20.0 ppb |
| 2018-05-14 | 1055386 | 21.0 ppb |
| 2018-05-14 | 1055388 | 27.0 ppb |
| 2018-08-13 | 1073423 | 16.0 ppb |
| 2018-08-13 | 1073425 | 18.0 ppb |
| 2018-08-13 | 1073422 | 22.0 ppb |
| 2018-08-13 | 1073424 | 43.0 ppb |
| 2018-08-15 | 1074181 | 0.230 ppb |
| 2018-08-15 | 1074183 | 0.870 ppb |
| 2018-11-12 | 1092411 | 14.0 ppb |
| 2018-11-12 | 1092410 | 15.0 ppb |
| 2018-11-12 | 1092413 | 16.0 ppb |
| 2018-11-12 | 1092412 | 19.0 ppb |
| 2019-02-18 | 1105569 | 12.0 ppb |
| 2019-02-18 | 1105567 | 15.0 ppb |
| 2019-02-18 | 1105566 | 15.0 ppb |
| 2019-02-18 | 1105568 | 23.0 ppb |
| 2019-03-06 | 1108269 | 8.00 ppb |
| 2019-03-06 | 1108265 | 9.20 ppb |
| 2019-05-14 | 1121047 | 12.0 ppb |
| 2019-05-14 | 1121045 | 12.0 ppb |
| 2019-05-14 | 1121046 | 13.0 ppb |
| 2019-05-14 | 1121048 | 15.0 ppb |
| 2019-08-12 | 1140153 | 18.0 ppb |
| 2019-08-12 | 1140151 | 19.0 ppb |
| 2019-08-12 | 1140150 | 31.0 ppb |
| 2019-08-12 | 1140152 | 35.0 ppb |
| 2019-11-11 | 1160249 | 12.0 ppb |
| 2019-11-11 | 1160247 | 15.0 ppb |
| 2019-11-11 | 1160248 | 19.0 ppb |
| 2019-11-11 | 1160250 | 24.0 ppb |