Bromoform
North Penn Water Authority
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 0.247 ppb | 38 | 12 | ND - 1.34 ppb |
| 2019 | 0.161 ppb | 32 | 7 | ND - 0.982 ppb |
| 2020 | 0.147 ppb | 32 | 8 | ND - 0.674 ppb |
| 2021 | 0.113 ppb | 32 | 5 | ND - 1.01 ppb |
| 2022 | 0.0155 ppb | 33 | 1 | ND - 0.510 ppb |
| 2023 | ND | 32 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.5 ppb
The EWG Health Guideline of 0.5 ppb for bromoform is based on the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer, harm to reproduction and child development, and change to fetal growth and development .
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-10 | 20180164 | ND |
| 2018-01-10 | 20180160 | ND |
| 2018-01-10 | 20180162 | ND |
| 2018-01-10 | 20180161 | ND |
| 2018-01-10 | 20180165 | ND |
| 2018-01-10 | 20180166 | ND |
| 2018-01-10 | 20180163 | ND |
| 2018-01-10 | 20180149 | 0.500 ppb |
| 2018-03-20 | 20181073 | 0.655 ppb |
| 2018-03-20 | 20181074 | 1.04 ppb |
| 2018-03-20 | 20181075 | ND |
| 2018-03-20 | 20181076 | ND |
| 2018-04-09 | 20181372 | 0.541 ppb |
| 2018-04-09 | 20181368 | ND |
| 2018-04-09 | 20181370 | 0.571 ppb |
| 2018-04-09 | 20181369 | ND |
| 2018-04-09 | 20181373 | ND |
| 2018-04-09 | 20181374 | ND |
| 2018-04-09 | 20181371 | 0.756 ppb |
| 2018-04-09 | 20181346 | 0.692 ppb |
| 2018-07-09 | 20182557 | ND |
| 2018-07-09 | 20182553 | ND |
| 2018-07-09 | 20182555 | 0.644 ppb |
| 2018-07-09 | 20182554 | ND |
| 2018-07-09 | 20182558 | 0.935 ppb |
| 2018-07-09 | 20182559 | ND |
| 2018-07-09 | 20182556 | 0.819 ppb |
| 2018-07-09 | 20182583 | 0.896 ppb |
| 2018-08-06 | 8082602-01 | ND |
| 2018-08-06 | 20182958 | ND |
| 2018-10-09 | 20183861 | ND |
| 2018-10-09 | 20183857 | ND |
| 2018-10-09 | 20183859 | ND |
| 2018-10-09 | 20183858 | ND |
| 2018-10-09 | 20183862 | ND |
| 2018-10-09 | 20183863 | ND |
| 2018-10-09 | 20183860 | ND |
| 2018-10-09 | 20183873 | 1.34 ppb |
| 2019-01-07 | 20190039 | ND |
| 2019-01-07 | 20190035 | ND |
| 2019-01-07 | 20190037 | ND |
| 2019-01-07 | 20190036 | ND |
| 2019-01-07 | 20190040 | ND |
| 2019-01-07 | 20190041 | ND |
| 2019-01-07 | 20190038 | ND |
| 2019-01-07 | 20190056 | 0.543 ppb |
| 2019-04-08 | 20191333 | ND |
| 2019-04-08 | 20191337 | ND |
| 2019-04-08 | 20191334 | ND |
| 2019-04-08 | 20191335 | ND |
| 2019-04-08 | 20191331 | ND |
| 2019-04-08 | 20191330 | ND |
| 2019-04-08 | 20191332 | ND |
| 2019-04-08 | 20191336 | ND |
| 2019-07-09 | 20192613 | ND |
| 2019-07-09 | 20192617 | ND |
| 2019-07-09 | 20192614 | ND |
| 2019-07-09 | 20192615 | ND |
| 2019-07-09 | 20192611 | 0.809 ppb |
| 2019-07-09 | 20192610 | ND |
| 2019-07-09 | 20192612 | 0.813 ppb |
| 2019-07-09 | 20192616 | 0.702 ppb |
| 2019-10-07 | 20193926 | ND |
| 2019-10-07 | 20193930 | ND |
| 2019-10-07 | 20193927 | ND |
| 2019-10-07 | 20193928 | ND |
| 2019-10-07 | 20193924 | 0.620 ppb |
| 2019-10-07 | 20193923 | ND |
| 2019-10-07 | 20193925 | 0.677 ppb |
| 2019-10-07 | 20193929 | 0.982 ppb |
| 2020-01-07 | ND | |
| 2020-01-07 | ND | |
| 2020-01-07 | ND | |
| 2020-01-07 | ND | |
| 2020-01-07 | ND | |
| 2020-01-07 | ND | |
| 2020-01-07 | 0.580 ppb | |
| 2020-01-07 | 0.510 ppb | |
| 2020-04-07 | ND | |
| 2020-04-07 | ND | |
| 2020-04-07 | ND | |
| 2020-04-07 | ND | |
| 2020-04-07 | ND | |
| 2020-04-07 | ND | |
| 2020-04-07 | ND | |
| 2020-04-07 | ND | |
| 2020-07-07 | ND | |
| 2020-07-07 | ND | |
| 2020-07-07 | ND | |
| 2020-07-07 | ND | |
| 2020-07-07 | 0.635 ppb | |
| 2020-07-07 | ND | |
| 2020-07-07 | 0.528 ppb | |
| 2020-07-07 | 0.634 ppb | |
| 2020-10-07 | ND | |
| 2020-10-07 | ND | |
| 2020-10-07 | ND | |
| 2020-10-07 | ND | |
| 2020-10-07 | 0.561 ppb | |
| 2020-10-07 | ND | |
| 2020-10-07 | 0.674 ppb | |
| 2020-10-07 | 0.593 ppb | |
| 2021-01-07 | ND | |
| 2021-01-07 | ND | |
| 2021-01-07 | ND | |
| 2021-01-07 | ND | |
| 2021-01-07 | 0.577 ppb | |
| 2021-01-07 | ND | |
| 2021-01-07 | 0.578 ppb | |
| 2021-01-07 | ND | |
| 2021-04-07 | ND | |
| 2021-04-07 | ND | |
| 2021-04-07 | ND | |
| 2021-04-07 | ND | |
| 2021-04-07 | ND | |
| 2021-04-07 | ND | |
| 2021-04-07 | 0.627 ppb | |
| 2021-04-07 | ND | |
| 2021-07-08 | ND | |
| 2021-07-08 | ND | |
| 2021-07-08 | ND | |
| 2021-07-08 | ND | |
| 2021-07-08 | 0.839 ppb | |
| 2021-07-08 | ND | |
| 2021-07-08 | 1.01 ppb | |
| 2021-07-08 | ND | |
| 2021-10-06 | ND | |
| 2021-10-06 | ND | |
| 2021-10-06 | ND | |
| 2021-10-06 | ND | |
| 2021-10-06 | ND | |
| 2021-10-06 | ND | |
| 2021-10-06 | ND | |
| 2021-10-06 | ND | |
| 2022-01-06 | ND | |
| 2022-01-06 | ND | |
| 2022-01-06 | ND | |
| 2022-01-06 | ND | |
| 2022-01-06 | ND | |
| 2022-01-06 | ND | |
| 2022-01-06 | ND | |
| 2022-01-06 | ND | |
| 2022-04-06 | ND | |
| 2022-04-06 | ND | |
| 2022-04-06 | ND | |
| 2022-04-06 | ND | |
| 2022-04-06 | ND | |
| 2022-04-06 | ND | |
| 2022-04-06 | ND | |
| 2022-04-06 | ND | |
| 2022-04-29 | ND | |
| 2022-07-11 | ND | |
| 2022-07-11 | ND | |
| 2022-07-11 | ND | |
| 2022-07-11 | ND | |
| 2022-07-11 | ND | |
| 2022-07-11 | ND | |
| 2022-07-11 | 0.510 ppb | |
| 2022-07-11 | ND | |
| 2022-10-06 | ND | |
| 2022-10-06 | ND | |
| 2022-10-06 | ND | |
| 2022-10-06 | ND | |
| 2022-10-06 | ND | |
| 2022-10-06 | ND | |
| 2022-10-06 | ND | |
| 2022-10-06 | ND | |
| 2023-01-09 | ND | |
| 2023-01-09 | ND | |
| 2023-01-09 | ND | |
| 2023-01-09 | ND | |
| 2023-01-09 | ND | |
| 2023-01-09 | ND | |
| 2023-01-09 | ND | |
| 2023-01-09 | ND | |
| 2023-04-10 | ND | |
| 2023-04-10 | ND | |
| 2023-04-10 | ND | |
| 2023-04-10 | ND | |
| 2023-04-10 | ND | |
| 2023-04-10 | ND | |
| 2023-04-10 | ND | |
| 2023-04-10 | ND | |
| 2023-07-10 | ND | |
| 2023-07-10 | ND | |
| 2023-07-10 | ND | |
| 2023-07-10 | ND | |
| 2023-07-10 | ND | |
| 2023-07-10 | ND | |
| 2023-07-10 | ND | |
| 2023-07-10 | ND | |
| 2023-10-09 | ND | |
| 2023-10-09 | ND | |
| 2023-10-09 | ND | |
| 2023-10-09 | ND | |
| 2023-10-09 | ND | |
| 2023-10-09 | ND | |
| 2023-10-09 | ND | |
| 2023-10-09 | ND |