| Police |
| Law enforcement services are provided by the Orange County Sheriff. |
| Fire |
| Fire protection services are provided by the Orange County Fire Authority. |
| Aliso Viejo Community Association (WPEY738) | ||
| Description | Frequency | |
| mobile | 461.5875 | |
| mobile | 466.5875 | |
| American Association of Critical Care Nurses (WPIC805) | ||
| Description | Frequency | |
| mobile | 464.4250 | |
| mobile | 464.4500 | |
| Fluor Daniel (WPTY932) | ||
| Description | Frequency | |
| mobile | 467.8500 | |
| mobile | 467.8750 | |
| Target | ||
| Description | Frequency | Tone |
| Operations | 151.6250 | 179.9 |
| Security | 151.8950 | 506 |