Ethylene dibromide
Warden City Of
Ethylene dibromide, a likely human carcinogen, was used until 1984 as a gasoline additive and a pesticide. It affects the hormone, reproductive and nervous systems; causes testicular atrophy; and damages the heart, liver and kidneys.
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 | ND | 3 | 0 | ND |
| 2019 | 0.0495 ppb | 4 | 2 | ND - 0.0990 ppb |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | 0.0414 ppb | 16 | 10 | ND - 0.177 ppb |
| 2022 | 0.0312 ppb | 27 | 10 | ND - 0.185 ppb |
| 2023 | 0.0295 ppb | 11 | 3 | ND - 0.125 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.01 ppb
The EWG Health Guideline of 0.01 ppb for ethylene dibromide was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
EPA Maximum Contaminant
Level (MCL): 0.05 ppb
The legal limit for ethylene dibromide, established in 1991, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer due to ethylene dibromide exposure.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-04-10 | ND | |
| 2018-07-25 | ND | |
| 2018-10-31 | ND | |
| 2019-04-08 | ND | |
| 2019-06-11 | ND | |
| 2019-10-03 | 0.0990 ppb | |
| 2019-10-03 | 0.0990 ppb | |
| 2021-03-29 | 4110003 | 0.177 ppb |
| 2021-03-29 | 4100649 | ND |
| 2021-06-02 | 4160680 | 0.0489 ppb |
| 2021-06-09 | 4160681 | 0.0107 ppb |
| 2021-06-09 | 4160679 | 0.0497 ppb |
| 2021-07-20 | 4142956 | ND |
| 2021-07-20 | 4142955 | ND |
| 2021-08-12 | 4155458 | ND |
| 2021-08-12 | 4155444 | 0.158 ppb |
| 2021-08-25 | 4163943 | 0.0298 ppb |
| 2021-09-28 | 4239543 | 0.01000 ppb |
| 2021-09-28 | 4192256 | ND |
| 2021-10-27 | 4195106 | ND |
| 2021-10-27 | 4194856 | 0.0485 ppb |
| 2021-11-16 | 4207059 | 0.109 ppb |
| 2021-11-16 | 4207058 | 0.0204 ppb |
| 2022-01-19 | 4225650 | 0.178 ppb |
| 2022-01-19 | 4226038 | ND |
| 2022-03-03 | 4254624 | ND |
| 2022-03-03 | 4254624 | ND |
| 2022-03-03 | 4254624 | ND |
| 2022-03-29 | 4258886 | 0.185 ppb |
| 2022-03-29 | 4258887 | ND |
| 2022-04-28 | 4271384 | 0.0485 ppb |
| 2022-04-28 | 4271385 | 0.109 ppb |
| 2022-05-17 | 4279773 | ND |
| 2022-05-17 | 4279774 | 0.0119 ppb |
| 2022-06-20 | 4296708 | ND |
| 2022-06-20 | 4296679 | 0.1000 ppb |
| 2022-07-13 | 4309268 | ND |
| 2022-07-13 | 4309266 | 0.0457 ppb |
| 2022-07-13 | 4309266 | 0.0457 ppb |
| 2022-07-13 | 4309267 | ND |
| 2022-08-09 | 4323285 | 0.1000 ppb |
| 2022-08-09 | 4323318 | ND |
| 2022-09-13 | 4371329 | ND |
| 2022-09-13 | 4371330 | ND |
| 2022-10-11 | 4357121 | ND |
| 2022-10-11 | 4371337 | ND |
| 2022-11-08 | 4375169 | ND |
| 2022-11-08 | 4375168 | ND |
| 2022-12-06 | 4388215 | 0.0180 ppb |
| 2022-12-06 | 4388380 | ND |
| 2023-01-18 | 4399153 | 0.0796 ppb |
| 2023-01-18 | 4399152 | ND |
| 2023-02-21 | 4415388 | 0.125 ppb |
| 2023-02-21 | 4415389 | ND |
| 2023-03-15 | 4426893 | ND |
| 2023-03-15 | 4426894 | 0.120 ppb |
| 2023-04-11 | 4478121 | ND |
| 2023-09-20 | 4524786 | ND |
| 2023-09-20 | 4524785 | ND |
| 2023-10-24 | 4539358 | ND |
| 2023-10-24 | 4539359 | ND |