National Drinking Water Database
Bromodichloromethane in Oregon
Bromodichloromethane is a disinfection byproduct from the trihalomethane (THM) family, and is formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water. [read more]
The Most Polluted Communities in Oregon
14 water utilities reported detecting Bromodichloromethane in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies
Ranked by highest average Bromodichloromethane level
| Rank | System | Population Served | Positive test results of total reported tests | Average Level (Range) |
|---|---|---|---|---|
| 1 | Beaver Water District Beaver, OR | 550 | 1 of 1 | 9.2 ppb (9.2 ppb) |
| 2 | City of Coquille Coquille, OR | 4,205 | 1 of 1 | 7.7 ppb (7.7 ppb) |
| 3 | Stayton Water Supply Stayton, OR | 7,300 | 1 of 1 | 6.5 ppb (6.5 ppb) |
| 4 | Rock Creek Water District Grand Ronde, OR | 350 | 1 of 1 | 4.2 ppb (4.2 ppb) |
| 5 | Usfs Tiller Ranger Station Roseburg, OR | 100 | 1 of 1 | 3 ppb (3 ppb) |
| 6 | City of Canyonville Canyonville, OR | 1,530 | 1 of 1 | 2.1 ppb (2.1 ppb) |
| 7 | City of Grants Pass Grants Pass, OR | 30,930 | 1 of 1 | 2 ppb (2 ppb) |
| 8 | City of Cottage Grove Cottage Grove, OR | 9,108 | 1 of 1 | 1.9 ppb (1.9 ppb) |
| 9 | City of Wilsonville Wilsonville, OR | 15,880 | 1 of 1 | 1.74 ppb (1.74 ppb) |
| 10 | Eugene Water & Electric Board Eugene, OR | 169,962 | 2 of 2 | 1.01 ppb (0.8 to 1.22 ppb) |
Health Based Limits for Bromodichloromethane
| Standard | Description | Level |
|---|---|---|
| Maximum Contaminant Limit Goal (MCLG) | A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency. | 0 ppb |
| EPA Human Health Water Quality Criteria | Water quality criteria set by the US EPA provide guidance for states and tribes authorized to establish water quality standards under the Clean Water Act (CWA) to protect human health. These are non-enforceable standards based upon exposure by both drinking water and the contribution of water contamination to other consumed foods. Source: U.S. Environmental Protection Agency. | 0.55 ppb |
| EPA Human Health Water Quality Criteria | Water quality criteria set by the US EPA provide guidance for states and tribes authorized to establish water quality standards under the Clean Water Act (CWA) to protect human health. These are non-enforceable standards based upon exposure by both drinking water and the contribution of water contamination to other consumed foods. Source: U.S. Environmental Protection Agency. | 0.55 ppb |
| One in one million (10-6) Cancer Risk | The concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 1,000,000. Source: U.S. Environmental Protection Agency. | 1 ppb |
| Children's health-based limit for 10-day exposure | Concentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic effects for up to ten days of exposure. The Ten-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency. | 60 ppb |
| Maximum Contaminant Limit (MCL) | The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency. | 80 ppb |
| One in ten thousand (10-4) Cancer Risk | The concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 10,000. Source: U.S. Environmental Protection Agency. | 100 ppb |
| Drinking Water Equivalent Level | A lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency. | 100 ppb |
| Children's health-based limit for 1-day exposure | Concentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for up to one day of exposure. The One-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency. | 1000 ppb |
Violation Summary for Bromodichloromethane in Oregon
There are no violations reported for this contaminant in Oregon