Water Systems Serving Zip Code 91786
Not sure which system is yours? Most residents in ZIP 91786 are likely served by City of Upland (population served: 78,376). 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 |
|---|---|---|---|---|
| San Antonio Water Company | 3,111 | Groundwater | 2 | 2 |
| City of Upland | 78,376 | Surface Water | 4 | 0 |
| Cajon Pass Shell | 507 | Groundwater | 2 | 0 |
| Fast Track #214 | 25 | Groundwater | 0 | 0 |
| West End Consolidated Water Company | 0 | Groundwater | 0 | 0 |