Bromoform
University of Connecticut - Main Campus
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 | 0.804 ppb | 26 | 17 | ND - 3.50 ppb |
| 2019 | 1.03 ppb | 26 | 22 | ND - 3.20 ppb |
| 2020 | 0.896 ppb | 24 | 18 | ND - 2.70 ppb |
| 2021 | 0.656 ppb | 18 | 10 | ND - 2.40 ppb |
| 2022 | 0.717 ppb | 18 | 12 | ND - 2.40 ppb |
| 2023 | 0.661 ppb | 18 | 12 | ND - 1.90 ppb |
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 |
|---|---|---|
| 2018-03-15 | CA02987TTHM | ND |
| 2018-03-15 | CA02988TTHM | 0.540 ppb |
| 2018-03-15 | CA02989TTHM | ND |
| 2018-03-15 | CA02990TTHM | 1.20 ppb |
| 2018-06-12 | CA68568TTHM | 0.660 ppb |
| 2018-06-12 | CA68569TTHM | 0.680 ppb |
| 2018-06-12 | CA68570TTHM | 0.630 ppb |
| 2018-06-12 | CA68571TTHM | 1.10 ppb |
| 2018-09-19 | DBP 200506182 | 0.900 ppb |
| 2018-09-19 | DBP 200506184 | 0.800 ppb |
| 2018-09-19 | DBP 200506186 | 3.50 ppb |
| 2018-09-19 | DBP 200506189 | 1.000 ppb |
| 2018-09-25 | DBP 200506720 | ND |
| 2018-09-25 | DBP 200506721 | ND |
| 2018-09-25 | DBP 200506722 | ND |
| 2018-09-25 | DBP 200506723 | ND |
| 2018-09-26 | DBP 200506966 | 1.90 ppb |
| 2018-09-27 | DBP 200507073 | 1.000 ppb |
| 2018-12-04 | DBP 200514724 | 0.600 ppb |
| 2018-12-04 | DBP 200514725 | ND |
| 2018-12-04 | DBP 200514726 | 2.70 ppb |
| 2018-12-04 | DBP 200514728 | 0.600 ppb |
| 2018-12-12 | VOC1 200515892 | ND |
| 2018-12-12 | VOC1 200515895 | ND |
| 2018-12-17 | DBP 200516281 | 0.800 ppb |
| 2018-12-17 | DBP 200516282 | 2.30 ppb |
| 2019-03-18 | DBP 200525024 | 0.700 ppb |
| 2019-03-18 | DBP 200525026 | 0.600 ppb |
| 2019-03-18 | DBP 200525029 | 1.80 ppb |
| 2019-03-18 | DBP 200525031 | 0.500 ppb |
| 2019-03-18 | DBP 200525033 | 0.700 ppb |
| 2019-03-18 | DBP 200525034 | 1.20 ppb |
| 2019-06-24 | DBP 200537541 | 2.20 ppb |
| 2019-06-24 | DBP 200537542 | 0.700 ppb |
| 2019-06-24 | DBP 200537543 | 1.40 ppb |
| 2019-06-25 | DBP 200537806 | 0.600 ppb |
| 2019-06-25 | DBP 200537807 | 0.700 ppb |
| 2019-06-25 | DBP 200537808 | ND |
| 2019-09-16 | DBP 200549001 | 0.900 ppb |
| 2019-09-16 | DBP 200549002 | 1.000 ppb |
| 2019-09-16 | DBP 200549040 | 3.20 ppb |
| 2019-09-16 | DBP 200549041 | 0.800 ppb |
| 2019-09-16 | DBP 200549043 | 1.10 ppb |
| 2019-09-16 | DBP 200549044 | 2.20 ppb |
| 2019-11-21 | VOC1 200557816 | ND |
| 2019-11-21 | VOC1 200557817 | ND |
| 2019-12-09 | DBP 200559412 | 0.600 ppb |
| 2019-12-09 | DBP 200559416 | 0.600 ppb |
| 2019-12-09 | DBP 200559419 | 2.40 ppb |
| 2019-12-09 | DBP 200559422 | ND |
| 2019-12-09 | DBP 200559425 | 0.700 ppb |
| 2019-12-09 | DBP 200559427 | 2.20 ppb |
| 2020-03-10 | DBP 200568861 | 0.500 ppb |
| 2020-03-10 | DBP 200568862 | ND |
| 2020-03-10 | DBP 200568863 | 2.20 ppb |
| 2020-03-10 | DBP 200568864 | 0.500 ppb |
| 2020-03-10 | DBP 200568865 | 0.500 ppb |
| 2020-03-10 | DBP 200568866 | 2.00 ppb |
| 2020-04-28 | VOC1 200573886 | ND |
| 2020-04-28 | VOC1 200573885 | ND |
| 2020-06-08 | DBP 200578348 | ND |
| 2020-06-08 | DBP 200578349 | 0.700 ppb |
| 2020-06-08 | DBP 200578350 | 1.60 ppb |
| 2020-06-08 | DBP 200578351 | ND |
| 2020-06-08 | DBP 200578352 | 0.500 ppb |
| 2020-06-08 | DBP 200578353 | 1.50 ppb |
| 2020-09-08 | DBP 200589310 | 0.700 ppb |
| 2020-09-08 | DBP 200589311 | 0.800 ppb |
| 2020-09-08 | DBP 200589312 | 2.70 ppb |
| 2020-09-08 | DBP 200589313 | 1.20 ppb |
| 2020-09-08 | DBP 200589314 | 1.20 ppb |
| 2020-09-08 | DBP 200589315 | 1.80 ppb |
| 2020-12-14 | DBP 200601156 | 0.800 ppb |
| 2020-12-14 | DBP 200601157 | 1.50 ppb |
| 2020-12-14 | DBP 200601385 | ND |
| 2020-12-15 | DBP 200601475 | 0.800 ppb |
| 2021-03-10 | DBP 200609379 | 0.500 ppb |
| 2021-03-10 | DBP 200609380 | 1.30 ppb |
| 2021-03-10 | DBP 200609381 | ND |
| 2021-03-10 | DBP 200609382 | ND |
| 2021-06-01 | DBP 200619042 | ND |
| 2021-06-01 | DBP 200619044 | 2.40 ppb |
| 2021-06-01 | DBP 200619046 | 0.700 ppb |
| 2021-06-01 | DBP 200619048 | ND |
| 2021-09-08 | 300054204 300054209 | 0.900 ppb |
| 2021-09-08 | 300054205 300054211 | 2.00 ppb |
| 2021-09-08 | 300054206 300054213 | 0.900 ppb |
| 2021-09-08 | 300054207 300054215 | 1.000 ppb |
| 2021-09-14 | 300059939 300059941 | ND |
| 2021-09-14 | 300059942 300059944 | ND |
| 2021-12-07 | D300114234 300114239 | 0.500 ppb |
| 2021-12-07 | D300114235 300114241 | 1.60 ppb |
| 2021-12-07 | D300114236 300114243 | ND |
| 2021-12-07 | D300114237 300114245 | ND |
| 2022-03-07 | CK80432 | ND |
| 2022-03-07 | CK80433 | 1.40 ppb |
| 2022-03-07 | CK80434 | ND |
| 2022-03-07 | CK80435 | ND |
| 2022-06-02 | CL46810 | 0.610 ppb |
| 2022-06-02 | CL46811 | 1.40 ppb |
| 2022-06-02 | CL46812 | ND |
| 2022-06-02 | CL46813 | 0.570 ppb |
| 2022-09-12 | CM28524 | 0.740 ppb |
| 2022-09-12 | CM28525 | 2.40 ppb |
| 2022-09-12 | CM28526 | 0.690 ppb |
| 2022-09-12 | CM28527 | 0.930 ppb |
| 2022-12-06 | CM98053 | ND |
| 2022-12-06 | CM98054 | ND |
| 2022-12-12 | CN02522 | 0.980 ppb |
| 2022-12-12 | CN02523 | 2.10 ppb |
| 2022-12-12 | CN02524 | 0.540 ppb |
| 2022-12-12 | CN02525 | 0.550 ppb |
| 2023-03-08 | CN55281 | ND |
| 2023-03-08 | CN55282 | 1.70 ppb |
| 2023-03-08 | CN55283 | ND |
| 2023-03-08 | CN55284 | 0.520 ppb |
| 2023-05-11 | CO03465 | ND |
| 2023-05-11 | CO03466 | ND |
| 2023-06-05 | CO19179 | ND |
| 2023-06-05 | CO19180 | 1.60 ppb |
| 2023-06-05 | CO19181 | 0.520 ppb |
| 2023-06-05 | CO19182 | ND |
| 2023-09-11 | CO94210 | 0.620 ppb |
| 2023-09-11 | CO94211 | 1.80 ppb |
| 2023-09-11 | CO94212 | 0.500 ppb |
| 2023-09-11 | CO94213 | 0.540 ppb |
| 2023-12-05 | CP59865 | 0.910 ppb |
| 2023-12-05 | CP59866 | 1.90 ppb |
| 2023-12-05 | CP59867 | 0.780 ppb |
| 2023-12-05 | CP59868 | 0.500 ppb |