Bromoform
Cromwell Fire District Water Department
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 | 0.477 ppb | 24 | 14 | ND - 1.20 ppb |
| 2019 | 0.458 ppb | 23 | 13 | ND - 1.50 ppb |
| 2020 | 0.490 ppb | 24 | 13 | ND - 1.50 ppb |
| 2021 | 0.664 ppb | 24 | 17 | ND - 2.20 ppb |
| 2022 | 0.540 ppb | 24 | 14 | ND - 1.60 ppb |
| 2023 | 0.617 ppb | 24 | 15 | ND - 1.70 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 |
|---|---|---|
| 2018-01-23 | BZ78967TTHM | 1.10 ppb |
| 2018-01-23 | BZ78968TTHM | 0.840 ppb |
| 2018-01-23 | BZ78969TTHM | 0.680 ppb |
| 2018-01-23 | BZ78970TTHM | 0.540 ppb |
| 2018-02-13 | BZ88138VOC1 | ND |
| 2018-02-13 | BZ88139VOC1 | ND |
| 2018-04-24 | CA34727TTHM | 0.990 ppb |
| 2018-04-24 | CA34728TTHM | 0.880 ppb |
| 2018-04-24 | CA34729TTHM | 0.780 ppb |
| 2018-04-24 | CA34730TTHM | 0.540 ppb |
| 2018-05-08 | CA42571VOC1 | ND |
| 2018-05-08 | CA42572VOC1 | ND |
| 2018-07-24 | CA96447 | 0.920 ppb |
| 2018-07-24 | CA96448 | 0.790 ppb |
| 2018-07-24 | CA96449 | 0.790 ppb |
| 2018-07-24 | CA96450 | ND |
| 2018-08-21 | CB15781 | ND |
| 2018-08-21 | CB15782 | ND |
| 2018-10-23 | CB79904 | 1.20 ppb |
| 2018-10-23 | CB79905 | 0.770 ppb |
| 2018-10-23 | CB79906 | 0.630 ppb |
| 2018-10-23 | CB79907 | ND |
| 2018-11-27 | CC03233 | ND |
| 2018-11-27 | CC03234 | ND |
| 2019-01-22 | CC32593 | 0.950 ppb |
| 2019-01-22 | CC32594 | 0.810 ppb |
| 2019-01-22 | CC32595 | 0.590 ppb |
| 2019-01-22 | CC32596 | ND |
| 2019-02-12 | CC50961 | ND |
| 2019-02-12 | CC50962 | ND |
| 2019-04-23 | CC99700 | 0.730 ppb |
| 2019-04-23 | CC99701 | 0.540 ppb |
| 2019-04-23 | CC99702 | 0.620 ppb |
| 2019-04-23 | CC99703 | ND |
| 2019-05-28 | CD21926 | ND |
| 2019-05-28 | CD21927 | ND |
| 2019-07-23 | CD62966 | 0.870 ppb |
| 2019-07-23 | CD62967 | 0.620 ppb |
| 2019-07-23 | CD62968 | 0.690 ppb |
| 2019-07-23 | CD62969 | ND |
| 2019-08-13 | CD83648 | ND |
| 2019-08-13 | CD83649 | ND |
| 2019-10-22 | CE45286 | 1.50 ppb |
| 2019-10-22 | CE45287 | 1.10 ppb |
| 2019-10-22 | CE45288 | 0.960 ppb |
| 2019-10-22 | CE45289 | 0.550 ppb |
| 2019-11-26 | CE68107 | ND |
| 2020-01-28 | CF22057 | 1.000 ppb |
| 2020-01-28 | CF22058 | 0.780 ppb |
| 2020-01-28 | CF22059 | 0.680 ppb |
| 2020-01-28 | CF22060 | ND |
| 2020-02-11 | CF29979 | ND |
| 2020-02-11 | CF29980 | ND |
| 2020-04-28 | CF79826 | 0.650 ppb |
| 2020-04-28 | CF79827 | 1.30 ppb |
| 2020-04-28 | CF79828 | 1.50 ppb |
| 2020-04-28 | CF79829 | 0.910 ppb |
| 2020-05-12 | CF93106 | ND |
| 2020-05-12 | CF93107 | ND |
| 2020-07-28 | CG42024 | ND |
| 2020-07-28 | CG42025 | 0.660 ppb |
| 2020-07-28 | CG42026 | 0.940 ppb |
| 2020-07-28 | CG42027 | 0.600 ppb |
| 2020-08-18 | CG55540 | ND |
| 2020-08-18 | CG55541 | ND |
| 2020-10-13 | CG95665 | ND |
| 2020-10-13 | CG95666 | 0.860 ppb |
| 2020-10-13 | CG95667 | 0.960 ppb |
| 2020-10-13 | CG95668 | 0.920 ppb |
| 2020-11-24 | CH19698 | ND |
| 2020-11-24 | CH19699 | ND |
| 2021-01-26 | CH52589 | 0.560 ppb |
| 2021-01-26 | CH52590 | 0.830 ppb |
| 2021-01-26 | CH52591 | 1.20 ppb |
| 2021-01-26 | CH52592 | 0.810 ppb |
| 2021-02-23 | CH66863 | ND |
| 2021-02-23 | CH66864 | ND |
| 2021-04-27 | CI16129 | 0.650 ppb |
| 2021-04-27 | CI16130 | 0.730 ppb |
| 2021-04-27 | CI16131 | 0.880 ppb |
| 2021-04-27 | CI16132 | 0.690 ppb |
| 2021-05-11 | CI28080 | ND |
| 2021-05-11 | CI28081 | ND |
| 2021-07-27 | CI82480 | 0.530 ppb |
| 2021-07-27 | CI82481 | 0.760 ppb |
| 2021-07-27 | CI82482 | 1.20 ppb |
| 2021-07-27 | CI82483 | 0.870 ppb |
| 2021-08-31 | CJ17054 | ND |
| 2021-08-31 | CJ17055 | ND |
| 2021-10-26 | CJ64980 | 0.720 ppb |
| 2021-10-26 | CJ64981 | 1.30 ppb |
| 2021-10-26 | CJ64982 | 2.20 ppb |
| 2021-10-26 | CJ64983 | 1.000 ppb |
| 2021-11-23 | CJ84236 | ND |
| 2021-11-23 | CJ84237 | 1.000 ppb |
| 2022-01-25 | CK22523 | ND |
| 2022-01-25 | CK22524 | 0.760 ppb |
| 2022-01-25 | CK22525 | 1.000 ppb |
| 2022-01-25 | CK22526 | 0.680 ppb |
| 2022-02-08 | CK31774 | ND |
| 2022-02-08 | CK31775 | ND |
| 2022-04-26 | CL16525 | 0.560 ppb |
| 2022-04-26 | CL16526 | 0.760 ppb |
| 2022-04-26 | CL16527 | 1.000 ppb |
| 2022-04-26 | CL16528 | 0.790 ppb |
| 2022-05-10 | CL26705 | ND |
| 2022-05-10 | CL26706 | ND |
| 2022-07-26 | CL89036 | ND |
| 2022-07-26 | CL89037 | 0.980 ppb |
| 2022-07-26 | CL89038 | 1.30 ppb |
| 2022-07-26 | CL89039 | 0.850 ppb |
| 2022-08-30 | CM17863 | ND |
| 2022-08-30 | CM17864 | ND |
| 2022-10-25 | CM69531 | 0.700 ppb |
| 2022-10-25 | CM69532 | 1.10 ppb |
| 2022-10-25 | CM69533 | 1.60 ppb |
| 2022-10-25 | CM69534 | 0.880 ppb |
| 2022-11-22 | CM90391 | ND |
| 2022-11-22 | CM90392 | ND |
| 2023-01-24 | CN28923 | 0.840 ppb |
| 2023-01-24 | CN28924 | 0.930 ppb |
| 2023-01-24 | CN28925 | 1.10 ppb |
| 2023-01-24 | CN28926 | 0.670 ppb |
| 2023-02-14 | CN42099 | ND |
| 2023-02-14 | CN42100 | ND |
| 2023-04-25 | CN90700 | 0.660 ppb |
| 2023-04-25 | CN90701 | 0.940 ppb |
| 2023-04-25 | CN90702 | 1.20 ppb |
| 2023-04-25 | CN90703 | 0.830 ppb |
| 2023-05-23 | CO11888 | ND |
| 2023-05-23 | CO11889 | ND |
| 2023-07-23 | CO57974 | ND |
| 2023-07-23 | CO57975 | 0.770 ppb |
| 2023-07-23 | CO57976 | 1.70 ppb |
| 2023-07-23 | CO57977 | 1.000 ppb |
| 2023-08-22 | CO79714 | ND |
| 2023-08-22 | CO79715 | ND |
| 2023-10-24 | CP32123 | 1.10 ppb |
| 2023-10-24 | CP32124 | 0.950 ppb |
| 2023-10-24 | CP32125 | 1.40 ppb |
| 2023-10-24 | CP32126 | 0.710 ppb |
| 2023-11-28 | CP54462 | ND |
| 2023-11-28 | CP54463 | ND |