Water Systems Serving Zip Code 91761
Not sure which system is yours? Most residents in ZIP 91761 are likely served by Ontario Municipal Utilities Company (population served: 185,010). Check your water bill for your provider name if you're unsure.
Direct EPA ZIP Matches
5 active water systems have this ZIP in EPA records.
| Water System | Population Served | Source | Violations | Health-Based |
|---|---|---|---|---|
| Bluetriton Brands Morongo | 200 | Groundwater | 122 | 0 |
| San Antonio Winery | 160 | Groundwater | 14 | 0 |
| Ontario Municipal Utilities Company | 185,010 | Surface Water Purchased | 0 | 0 |
| Chino Basin Desalter Auth. - Desalter 2 | 0 | Groundwater | 0 | 0 |
| Chino Basin Desalter Auth. - Desalter 1 | 0 | Groundwater | 0 | 0 |