Bromoform
Hazardville Water Company
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 | 0.715 ppb | 22 | 13 | ND - 2.40 ppb |
| 2019 | 0.692 ppb | 21 | 12 | ND - 2.80 ppb |
| 2020 | 0.810 ppb | 25 | 14 | ND - 3.10 ppb |
| 2021 | 1.17 ppb | 21 | 15 | ND - 3.80 ppb |
| 2022 | 0.767 ppb | 21 | 14 | ND - 3.00 ppb |
| 2023 | 0.727 ppb | 25 | 16 | ND - 3.10 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 |
|---|---|---|
| 2018-01-03 | BZ68303VOC1 | ND |
| 2018-01-22 | BZ78627TTHM | 1.20 ppb |
| 2018-01-22 | BZ78628TTHM | ND |
| 2018-01-22 | BZ78629TTHM | 1.70 ppb |
| 2018-01-22 | BZ78630TTHM | 0.590 ppb |
| 2018-04-03 | CA12985VOC1 | ND |
| 2018-04-23 | CA35126TTHM | 1.10 ppb |
| 2018-04-23 | CA35127TTHM | ND |
| 2018-04-23 | CA35128TTHM | 1.40 ppb |
| 2018-04-23 | CA35129TTHM | ND |
| 2018-07-02 | CA82194 | ND |
| 2018-07-02 | CA82195 | ND |
| 2018-07-02 | CA82195VOC1 | ND |
| 2018-07-23 | CA96762 | 1.70 ppb |
| 2018-07-23 | CA96763 | 0.570 ppb |
| 2018-07-23 | CA96764 | 1.20 ppb |
| 2018-07-23 | CA96765 | 0.830 ppb |
| 2018-10-10 | CB69247 | ND |
| 2018-10-22 | CB80392 | 2.40 ppb |
| 2018-10-22 | CB80393 | 0.580 ppb |
| 2018-10-22 | CB80394 | 1.60 ppb |
| 2018-10-22 | CB80395 | 0.870 ppb |
| 2019-01-07 | CC25226 | ND |
| 2019-01-21 | CC32630 | 1.50 ppb |
| 2019-01-21 | CC32631 | 0.530 ppb |
| 2019-01-21 | CC32632 | 0.660 ppb |
| 2019-01-21 | CC32633 | ND |
| 2019-04-02 | CC79783 | ND |
| 2019-04-22 | CC99840 | ND |
| 2019-04-22 | CC99841 | 0.530 ppb |
| 2019-04-22 | CC99842 | 1.60 ppb |
| 2019-04-22 | CC99843 | 0.820 ppb |
| 2019-07-09 | CD52639 | ND |
| 2019-07-09 | CD52640 | ND |
| 2019-07-22 | CD63255 | ND |
| 2019-07-22 | CD63256 | ND |
| 2019-07-22 | CD63257 | 1.000 ppb |
| 2019-07-22 | CD63258 | 0.800 ppb |
| 2019-10-08 | CE28924 | ND |
| 2019-10-21 | CE45705 | 2.80 ppb |
| 2019-10-21 | CE45706 | 1.40 ppb |
| 2019-10-21 | CE45707 | 1.60 ppb |
| 2019-10-21 | CE45708 | 1.30 ppb |
| 2020-01-13 | CF12156 | ND |
| 2020-01-27 | CF22222 | 1.40 ppb |
| 2020-01-27 | CF22223 | ND |
| 2020-01-27 | CF22224 | 1.10 ppb |
| 2020-01-27 | CF22225 | 0.520 ppb |
| 2020-04-01 | CF59969 | ND |
| 2020-04-21 | CF76661 | 1.90 ppb |
| 2020-04-21 | CF76662 | 0.910 ppb |
| 2020-04-21 | CF76663 | 1.70 ppb |
| 2020-04-21 | CF76664 | 0.830 ppb |
| 2020-07-01 | CG26322 | ND |
| 2020-07-01 | CG26319 | ND |
| 2020-07-01 | CG26321 | ND |
| 2020-07-01 | CG26323 | ND |
| 2020-07-01 | CG26320 | ND |
| 2020-07-01 | CG26324 | ND |
| 2020-07-21 | CG37622 | 1.20 ppb |
| 2020-07-21 | CG37623 | ND |
| 2020-07-21 | CG37624 | 1.20 ppb |
| 2020-07-21 | CG37625 | 1.30 ppb |
| 2020-10-26 | CH04447 | 3.10 ppb |
| 2020-10-26 | CH04448 | 0.680 ppb |
| 2020-10-26 | CH04449 | 2.90 ppb |
| 2020-10-26 | CH04450 | 1.50 ppb |
| 2020-12-21 | CH35890 | ND |
| 2021-01-25 | CH52640 | 1.10 ppb |
| 2021-01-25 | CH52641 | ND |
| 2021-01-25 | CH52642 | 1.30 ppb |
| 2021-01-25 | CH52643 | 0.660 ppb |
| 2021-02-02 | CH56335 | ND |
| 2021-04-12 | CH98310 | ND |
| 2021-04-26 | CI16241 | 1.30 ppb |
| 2021-04-26 | CI16242 | 0.530 ppb |
| 2021-04-26 | CI16243 | 1.80 ppb |
| 2021-04-26 | CI16244 | 0.840 ppb |
| 2021-07-07 | CI68950 | ND |
| 2021-07-07 | CI68951 | ND |
| 2021-07-26 | CI82857 | 2.70 ppb |
| 2021-07-26 | CI82858 | 0.930 ppb |
| 2021-07-26 | CI82859 | 2.10 ppb |
| 2021-07-26 | CI82860 | 3.10 ppb |
| 2021-10-12 | CJ55044 | ND |
| 2021-10-25 | CJ64835 | 2.40 ppb |
| 2021-10-25 | CJ64836 | 0.840 ppb |
| 2021-10-25 | CJ64837 | 3.80 ppb |
| 2021-10-25 | CJ64838 | 1.20 ppb |
| 2022-01-05 | CK10281 | ND |
| 2022-01-24 | CK22495 | 0.750 ppb |
| 2022-01-24 | CK22496 | ND |
| 2022-01-24 | CK22497 | 0.940 ppb |
| 2022-01-24 | CK22498 | ND |
| 2022-04-12 | CL06123 | ND |
| 2022-04-25 | CL15820 | 1.30 ppb |
| 2022-04-25 | CL15821 | 0.510 ppb |
| 2022-04-25 | CL15822 | 1.20 ppb |
| 2022-04-25 | CL15823 | 0.830 ppb |
| 2022-07-18 | CL79816 | ND |
| 2022-07-18 | CL79821 | ND |
| 2022-07-25 | CL86224 | 1.000 ppb |
| 2022-07-25 | CL86225 | 0.600 ppb |
| 2022-07-25 | CL86226 | 0.940 ppb |
| 2022-07-25 | CL86227 | 1.50 ppb |
| 2022-10-04 | CM49070 | ND |
| 2022-10-24 | CM69751 | 1.50 ppb |
| 2022-10-24 | CM69752 | 0.830 ppb |
| 2022-10-24 | CM69753 | 3.00 ppb |
| 2022-10-24 | CM69754 | 1.20 ppb |
| 2023-01-09 | CN19981 | ND |
| 2023-01-23 | CN28212 | 1.40 ppb |
| 2023-01-23 | CN28213 | 0.660 ppb |
| 2023-01-23 | CN28214 | 1.40 ppb |
| 2023-01-23 | CN28215 | 0.610 ppb |
| 2023-04-03 | CN75054 | ND |
| 2023-04-24 | CN89679 | 1.60 ppb |
| 2023-04-24 | CN89680 | 0.770 ppb |
| 2023-04-24 | CN89681 | 1.40 ppb |
| 2023-04-24 | CN89682 | 0.810 ppb |
| 2023-07-17 | CO51862 | ND |
| 2023-07-17 | CO51859 | ND |
| 2023-07-17 | CO51861 | ND |
| 2023-07-17 | CO51863 | ND |
| 2023-07-17 | CO51860 | ND |
| 2023-07-17 | CO51864 | ND |
| 2023-07-24 | CO56914 | 0.670 ppb |
| 2023-07-24 | CO56915 | 0.530 ppb |
| 2023-07-24 | CO56916 | 1.20 ppb |
| 2023-07-24 | CO56917 | 1.10 ppb |
| 2023-10-10 | CP21649 | ND |
| 2023-10-23 | CP31467 | 1.40 ppb |
| 2023-10-23 | CP31468 | 0.530 ppb |
| 2023-10-23 | CP31469 | 3.10 ppb |
| 2023-10-23 | CP31470 | 1.000 ppb |