RIVERSIDE HIGHLAND WATER COMPANY
California — Community Water System — PWSID: CA3610057
System Information
| PWSID | CA3610057 |
| System Name | RIVERSIDE HIGHLAND WATER COMPANY |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Mar 22, 1979 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | California |
| City | GRAND TERRACE |
| ZIP Code | 92323 |
| Address | 12374 MICHIGAN STREET |
| Organization | HOUGH, DON |
| Phone | 909-825-4128 |
Population & Service
| Population Served | 20,188 |
| Service Connections | 6,656 |
Drinking Water Violations (3)
This water system has 3 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2024 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Addressed | — | Lead and Copper Rule |
| May 1, 1998 | May 31, 1998 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | May 1, 1998 | Total Coliform Rule |
| May 1, 1998 | May 31, 1998 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | May 1, 1998 | Total Coliform Rule |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.