Bromoform
Olympic View Water & Sewer District
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 | 0.109 ppb | 17 | 3 | ND - 0.700 ppb |
| 2019 | 0.128 ppb | 16 | 3 | ND - 0.847 ppb |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | 0.0696 ppb | 16 | 2 | ND - 0.599 ppb |
| 2022 | ND | 17 | 0 | ND |
| 2023 | 0.0812 ppb | 16 | 2 | ND - 0.799 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 |
|---|---|---|
| 2018-03-13 | ND | |
| 2018-03-13 | ND | |
| 2018-03-13 | ND | |
| 2018-03-13 | ND | |
| 2018-06-06 | 0.700 ppb | |
| 2018-06-12 | ND | |
| 2018-06-12 | ND | |
| 2018-06-12 | 0.530 ppb | |
| 2018-06-12 | ND | |
| 2018-09-11 | ND | |
| 2018-09-11 | ND | |
| 2018-09-11 | 0.630 ppb | |
| 2018-09-11 | ND | |
| 2018-12-11 | ND | |
| 2018-12-11 | ND | |
| 2018-12-11 | ND | |
| 2018-12-11 | ND | |
| 2019-03-12 | ND | |
| 2019-03-12 | ND | |
| 2019-03-12 | ND | |
| 2019-03-12 | ND | |
| 2019-06-11 | ND | |
| 2019-06-11 | 0.847 ppb | |
| 2019-06-11 | ND | |
| 2019-06-11 | ND | |
| 2019-09-11 | ND | |
| 2019-09-11 | ND | |
| 2019-09-11 | ND | |
| 2019-09-11 | 0.529 ppb | |
| 2019-12-10 | ND | |
| 2019-12-10 | ND | |
| 2019-12-10 | 0.668 ppb | |
| 2019-12-10 | ND | |
| 2021-03-09 | 4089015 | 0.599 ppb |
| 2021-03-09 | 4089013 | ND |
| 2021-03-09 | 4089014 | ND |
| 2021-03-09 | 4089012 | ND |
| 2021-06-15 | 4130815 | ND |
| 2021-06-15 | 4130813 | ND |
| 2021-06-15 | 4130812 | ND |
| 2021-06-15 | 4130814 | ND |
| 2021-09-14 | 4172501 | ND |
| 2021-09-14 | 4172500 | ND |
| 2021-09-14 | 4172502 | 0.515 ppb |
| 2021-09-14 | 4172499 | ND |
| 2021-12-01 | 4215958 | ND |
| 2021-12-01 | 4215961 | ND |
| 2021-12-01 | 4215959 | ND |
| 2021-12-01 | 4215960 | ND |
| 2022-02-23 | 4253232 | ND |
| 2022-03-08 | 4258223 | ND |
| 2022-03-08 | 4258222 | ND |
| 2022-03-08 | 4258220 | ND |
| 2022-03-08 | 4258221 | ND |
| 2022-06-14 | 4295085 | ND |
| 2022-06-14 | 4295087 | ND |
| 2022-06-14 | 4295084 | ND |
| 2022-06-14 | 4295086 | ND |
| 2022-09-13 | 4343596 | ND |
| 2022-09-13 | 4343595 | ND |
| 2022-09-13 | 4343594 | ND |
| 2022-09-13 | 4343597 | ND |
| 2022-12-13 | 4385584 | ND |
| 2022-12-13 | 4385585 | ND |
| 2022-12-13 | 4385587 | ND |
| 2022-12-13 | 4385586 | ND |
| 2023-03-14 | 4426554 | ND |
| 2023-03-14 | 4426555 | ND |
| 2023-03-14 | 4426552 | ND |
| 2023-03-14 | 4426553 | ND |
| 2023-06-13 | 4468683 | ND |
| 2023-06-13 | 4468684 | ND |
| 2023-06-13 | 4468685 | 0.500 ppb |
| 2023-06-13 | 4468682 | ND |
| 2023-09-12 | 4514549 | ND |
| 2023-09-12 | 4514548 | ND |
| 2023-09-12 | 4514550 | 0.799 ppb |
| 2023-09-12 | 4514547 | ND |
| 2023-12-12 | 4557049 | ND |
| 2023-12-12 | 4557047 | ND |
| 2023-12-12 | 4557048 | ND |
| 2023-12-12 | 4557050 | ND |