Dibromochloromethane
North Penn Water Authority
Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.
248
Samples
0
Samples exceeding legal limit (MCL)
225
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 2.47 ppb | 42 | 40 | ND - 5.00 ppb |
| 2015 | 2.46 ppb | 47 | 39 | ND - 5.90 ppb |
| 2016 | 2.33 ppb | 47 | 39 | ND - 7.70 ppb |
| 2017 | 2.16 ppb | 42 | 38 | ND - 7.03 ppb |
| 2018 | 2.94 ppb | 38 | 37 | ND - 4.72 ppb |
| 2019 | 3.07 ppb | 32 | 32 | 1.48 ppb - 5.78 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.1 ppb
The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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 |
|---|---|---|
| 2014-01-08 | 20140097 | 2.85 ppb |
| 2014-01-08 | 20140098 | 1.76 ppb |
| 2014-01-08 | 20140104 | 1.88 ppb |
| 2014-01-08 | 20140102 | 1.95 ppb |
| 2014-01-08 | 20140101 | 3.35 ppb |
| 2014-01-08 | 20140103 | 1.64 ppb |
| 2014-01-08 | 20140099 | 3.56 ppb |
| 2014-01-08 | 20140100 | 2.68 ppb |
| 2014-03-05 | 20140816 | 0.689 ppb |
| 2014-03-05 | 20140817 | 2.75 ppb |
| 2014-03-05 | 20140818 | 0.982 ppb |
| 2014-03-05 | 20140819 | ND |
| 2014-03-05 | 20140820 | ND |
| 2014-04-09 | 20141219 | 2.12 ppb |
| 2014-04-09 | 20141220 | 2.36 ppb |
| 2014-04-09 | 20141226 | 2.06 ppb |
| 2014-04-09 | 20141224 | 1.82 ppb |
| 2014-04-09 | 20141223 | 2.11 ppb |
| 2014-04-09 | 20141225 | 1.91 ppb |
| 2014-04-09 | 20141221 | 2.76 ppb |
| 2014-04-09 | 20141222 | 2.41 ppb |
| 2014-06-04 | 20141932 | 0.997 ppb |
| 2014-06-04 | 20141933 | 3.01 ppb |
| 2014-06-04 | 20141935 | 0.908 ppb |
| 2014-06-04 | 20141936 | 2.11 ppb |
| 2014-06-04 | 20141934 | 0.598 ppb |
| 2014-07-09 | 14071329-06 | 3.70 ppb |
| 2014-07-09 | 14071329-01 | 3.10 ppb |
| 2014-07-09 | 14071329-04 | 3.40 ppb |
| 2014-07-09 | 14071329-03 | 3.50 ppb |
| 2014-07-09 | 14071329-07 | 3.60 ppb |
| 2014-07-09 | 14071329-08 | 3.10 ppb |
| 2014-07-09 | 14071329-05 | 3.70 ppb |
| 2014-07-09 | 14071329-02 | 4.00 ppb |
| 2014-10-08 | 14101000-06 | 4.10 ppb |
| 2014-10-08 | 14101000-01 | 3.40 ppb |
| 2014-10-08 | 14101000-04 | 3.20 ppb |
| 2014-10-08 | 14101000-03 | 2.90 ppb |
| 2014-10-08 | 14101000-07 | 3.20 ppb |
| 2014-10-08 | 14101000-08 | 2.00 ppb |
| 2014-10-08 | 14101000-05 | 5.00 ppb |
| 2014-10-08 | 14101000-02 | 2.70 ppb |
| 2015-01-07 | 12287121 | 2.66 ppb |
| 2015-01-07 | 12287101 | 1.83 ppb |
| 2015-01-07 | 12287111 | 1.93 ppb |
| 2015-01-07 | 12287106 | 1.95 ppb |
| 2015-01-07 | 12287126 | 3.22 ppb |
| 2015-01-07 | 12287131 | 1.37 ppb |
| 2015-01-07 | 12287116 | 3.08 ppb |
| 2015-01-07 | 12287136 | 2.36 ppb |
| 2015-04-08 | 12633559 | 2.40 ppb |
| 2015-04-08 | 12633539 | 2.00 ppb |
| 2015-04-08 | 12633549 | 1.70 ppb |
| 2015-04-08 | 12633544 | 1.80 ppb |
| 2015-04-08 | 12633564 | 3.00 ppb |
| 2015-04-08 | 12633569 | 1.40 ppb |
| 2015-04-08 | 12633554 | 4.40 ppb |
| 2015-04-08 | 12633574 | 2.40 ppb |
| 2015-07-08 | 13013215 | 4.20 ppb |
| 2015-07-08 | 13013195 | 4.30 ppb |
| 2015-07-08 | 13013205 | 4.90 ppb |
| 2015-07-08 | 13013200 | 5.20 ppb |
| 2015-07-08 | 13013220 | 4.10 ppb |
| 2015-07-08 | 13013225 | 3.50 ppb |
| 2015-07-08 | 13013210 | 5.90 ppb |
| 2015-07-08 | 13013230 | 5.80 ppb |
| 2015-07-13 | 13013085 | 0.828 ppb |
| 2015-07-13 | 13013111 | 1.12 ppb |
| 2015-07-13 | 13013137 | ND |
| 2015-07-13 | 13013163 | ND |
| 2015-07-13 | 13013189 | ND |
| 2015-09-14 | 13264728 | 0.932 ppb |
| 2015-09-14 | 13264754 | 1.83 ppb |
| 2015-09-14 | 13264780 | ND |
| 2015-10-07 | 13389315 | 4.44 ppb |
| 2015-10-07 | 13389295 | 4.08 ppb |
| 2015-10-07 | 13389305 | 3.58 ppb |
| 2015-10-07 | 13389300 | 3.94 ppb |
| 2015-10-07 | 13389320 | 3.34 ppb |
| 2015-10-07 | 13389325 | 2.55 ppb |
| 2015-10-07 | 13389310 | 5.28 ppb |
| 2015-10-07 | 13389330 | 4.87 ppb |
| 2015-12-02 | 13633364 | 0.900 ppb |
| 2015-12-02 | 13633390 | 1.55 ppb |
| 2015-12-02 | 13633416 | ND |
| 2015-12-02 | 13633442 | ND |
| 2015-12-02 | 13633468 | ND |
| 2015-12-02 | 13633494 | 0.860 ppb |
| 2015-12-09 | 13633520 | ND |
| 2016-01-06 | 13752752 | 2.79 ppb |
| 2016-01-06 | 13752732 | 2.68 ppb |
| 2016-01-06 | 13752742 | 2.24 ppb |
| 2016-01-06 | 13752737 | 2.40 ppb |
| 2016-01-06 | 13752757 | 1.89 ppb |
| 2016-01-06 | 13752762 | 1.62 ppb |
| 2016-01-06 | 13752747 | 2.77 ppb |
| 2016-01-06 | 13752767 | 2.34 ppb |
| 2016-03-02 | 13986071 | ND |
| 2016-03-02 | 13986097 | 3.80 ppb |
| 2016-03-02 | 13986123 | ND |
| 2016-03-02 | 13986149 | ND |
| 2016-03-02 | 13986175 | ND |
| 2016-04-07 | 14102784 | 2.03 ppb |
| 2016-04-07 | 14102760 | 1.38 ppb |
| 2016-04-07 | 14102772 | 1.95 ppb |
| 2016-04-07 | 14102766 | 1.62 ppb |
| 2016-04-07 | 14102790 | 2.98 ppb |
| 2016-04-07 | 14102796 | 1.25 ppb |
| 2016-04-07 | 14102778 | 3.22 ppb |
| 2016-04-07 | 14102802 | 1.75 ppb |
| 2016-06-06 | 14405909 | 0.961 ppb |
| 2016-06-06 | 14405936 | 0.846 ppb |
| 2016-06-06 | 14405990 | 0.754 ppb |
| 2016-06-06 | 14406017 | 2.08 ppb |
| 2016-06-06 | 14405963 | ND |
| 2016-07-06 | 14569911 | 3.47 ppb |
| 2016-07-06 | 14569887 | 3.54 ppb |
| 2016-07-06 | 14569899 | 3.16 ppb |
| 2016-07-06 | 14569893 | 3.55 ppb |
| 2016-07-06 | 14569917 | 2.94 ppb |
| 2016-07-06 | 14569923 | 2.32 ppb |
| 2016-07-06 | 14569905 | 5.46 ppb |
| 2016-07-06 | 14569929 | 3.73 ppb |
| 2016-09-07 | 14908098 | 0.748 ppb |
| 2016-09-07 | 14908125 | 0.921 ppb |
| 2016-09-07 | 14908152 | ND |
| 2016-09-07 | 14908179 | ND |
| 2016-09-07 | 14908206 | ND |
| 2016-10-10 | 15075702 | 4.70 ppb |
| 2016-10-10 | 15075678 | 4.40 ppb |
| 2016-10-10 | 15075690 | 4.00 ppb |
| 2016-10-10 | 15075684 | 4.80 ppb |
| 2016-10-10 | 15075708 | 3.00 ppb |
| 2016-10-10 | 15075714 | 2.60 ppb |
| 2016-10-10 | 15075696 | 7.70 ppb |
| 2016-10-10 | 15075720 | 5.10 ppb |
| 2017-01-10 | 15517162 | 3.17 ppb |
| 2017-01-10 | 15517138 | 2.44 ppb |
| 2017-01-10 | 15517150 | 3.06 ppb |
| 2017-01-10 | 15517144 | 1.95 ppb |
| 2017-01-10 | 15517168 | 4.47 ppb |
| 2017-01-10 | 15517174 | 1.42 ppb |
| 2017-01-10 | 15517156 | 3.31 ppb |
| 2017-01-10 | 15517180 | 2.40 ppb |
| 2017-03-22 | 15796103 | 0.528 ppb |
| 2017-03-22 | 15796130 | 0.665 ppb |
| 2017-03-22 | 15796157 | 0.559 ppb |
| 2017-03-22 | 15796184 | ND |
| 2017-03-22 | 15796211 | ND |
| 2017-04-10 | 15936903 | 1.80 ppb |
| 2017-04-10 | 15936883 | 1.70 ppb |
| 2017-04-10 | 15936893 | 1.40 ppb |
| 2017-04-10 | 15936888 | 1.50 ppb |
| 2017-04-10 | 15936908 | 2.40 ppb |
| 2017-04-10 | 15936913 | 1.20 ppb |
| 2017-04-10 | 15936898 | 2.70 ppb |
| 2017-04-10 | 15936918 | 1.80 ppb |
| 2017-07-10 | 16413089 | 2.80 ppb |
| 2017-07-10 | 16413069 | 2.40 ppb |
| 2017-07-10 | 16413079 | 2.60 ppb |
| 2017-07-10 | 16413074 | 2.90 ppb |
| 2017-07-10 | 16413094 | 2.70 ppb |
| 2017-07-10 | 16413099 | 1.90 ppb |
| 2017-07-10 | 16413084 | 3.80 ppb |
| 2017-07-10 | 16413104 | 2.30 ppb |
| 2017-09-11 | 16726768 | 1.14 ppb |
| 2017-09-11 | 16726795 | 0.856 ppb |
| 2017-09-11 | 16726822 | 0.543 ppb |
| 2017-09-11 | 16726849 | ND |
| 2017-09-11 | 16726876 | ND |
| 2017-10-10 | 16880054 | 3.28 ppb |
| 2017-10-10 | 16880030 | 3.22 ppb |
| 2017-10-10 | 16880042 | 2.72 ppb |
| 2017-10-10 | 16880036 | 3.05 ppb |
| 2017-10-10 | 16880060 | 2.86 ppb |
| 2017-10-10 | 16880066 | 2.29 ppb |
| 2017-10-10 | 16880048 | 3.97 ppb |
| 2017-10-10 | 16880072 | 7.03 ppb |
| 2018-01-10 | 20180164 | 2.55 ppb |
| 2018-01-10 | 20180160 | 2.02 ppb |
| 2018-01-10 | 20180162 | 2.12 ppb |
| 2018-01-10 | 20180161 | 1.99 ppb |
| 2018-01-10 | 20180165 | 1.63 ppb |
| 2018-01-10 | 20180166 | 1.09 ppb |
| 2018-01-10 | 20180163 | 2.08 ppb |
| 2018-01-10 | 20180149 | 2.33 ppb |
| 2018-03-20 | 20181073 | 0.645 ppb |
| 2018-03-20 | 20181074 | 0.968 ppb |
| 2018-03-20 | 20181075 | 0.563 ppb |
| 2018-03-20 | 20181076 | ND |
| 2018-04-09 | 20181372 | 4.72 ppb |
| 2018-04-09 | 20181368 | 3.96 ppb |
| 2018-04-09 | 20181370 | 4.17 ppb |
| 2018-04-09 | 20181369 | 3.54 ppb |
| 2018-04-09 | 20181373 | 3.51 ppb |
| 2018-04-09 | 20181374 | 3.31 ppb |
| 2018-04-09 | 20181371 | 4.08 ppb |
| 2018-04-09 | 20181346 | 3.57 ppb |
| 2018-07-09 | 20182557 | 3.42 ppb |
| 2018-07-09 | 20182553 | 3.22 ppb |
| 2018-07-09 | 20182555 | 3.46 ppb |
| 2018-07-09 | 20182554 | 3.64 ppb |
| 2018-07-09 | 20182558 | 3.88 ppb |
| 2018-07-09 | 20182559 | 2.35 ppb |
| 2018-07-09 | 20182556 | 4.30 ppb |
| 2018-07-09 | 20182583 | 3.40 ppb |
| 2018-08-06 | 8082602-01 | 4.60 ppb |
| 2018-08-06 | 20182958 | 3.25 ppb |
| 2018-10-09 | 20183861 | 4.09 ppb |
| 2018-10-09 | 20183857 | 3.18 ppb |
| 2018-10-09 | 20183859 | 3.26 ppb |
| 2018-10-09 | 20183858 | 3.19 ppb |
| 2018-10-09 | 20183862 | 2.99 ppb |
| 2018-10-09 | 20183863 | 2.55 ppb |
| 2018-10-09 | 20183860 | 3.57 ppb |
| 2018-10-09 | 20183873 | 4.66 ppb |
| 2019-01-07 | 20190039 | 2.14 ppb |
| 2019-01-07 | 20190035 | 2.13 ppb |
| 2019-01-07 | 20190037 | 1.65 ppb |
| 2019-01-07 | 20190036 | 1.76 ppb |
| 2019-01-07 | 20190040 | 1.52 ppb |
| 2019-01-07 | 20190041 | 1.48 ppb |
| 2019-01-07 | 20190038 | 1.87 ppb |
| 2019-01-07 | 20190056 | 2.36 ppb |
| 2019-04-08 | 20191333 | 2.67 ppb |
| 2019-04-08 | 20191337 | 2.19 ppb |
| 2019-04-08 | 20191334 | 2.53 ppb |
| 2019-04-08 | 20191335 | 2.62 ppb |
| 2019-04-08 | 20191331 | 2.18 ppb |
| 2019-04-08 | 20191330 | 2.17 ppb |
| 2019-04-08 | 20191332 | 2.33 ppb |
| 2019-04-08 | 20191336 | 2.28 ppb |
| 2019-07-09 | 20192613 | 3.75 ppb |
| 2019-07-09 | 20192617 | 3.25 ppb |
| 2019-07-09 | 20192614 | 3.41 ppb |
| 2019-07-09 | 20192615 | 3.18 ppb |
| 2019-07-09 | 20192611 | 5.72 ppb |
| 2019-07-09 | 20192610 | 2.51 ppb |
| 2019-07-09 | 20192612 | 4.91 ppb |
| 2019-07-09 | 20192616 | 3.59 ppb |
| 2019-10-07 | 20193926 | 4.64 ppb |
| 2019-10-07 | 20193930 | 3.75 ppb |
| 2019-10-07 | 20193927 | 4.07 ppb |
| 2019-10-07 | 20193928 | 4.06 ppb |
| 2019-10-07 | 20193924 | 4.09 ppb |
| 2019-10-07 | 20193923 | 2.90 ppb |
| 2019-10-07 | 20193925 | 4.81 ppb |
| 2019-10-07 | 20193929 | 5.78 ppb |