| Business | Phone |
| Upper Thompson Sanitaiton Dist 2201 Mall Rd, Estes Park 80517 | (970) 586-5389 |
| Upper Thompson Sanitation Dist 2196 Mall Rd, Estes Park 80517 | (970) 586-5108 |
| Estes Park Sanitation District 1201 Graves Ave, Estes Park 80517 | (970) 586-2866 |
| Estes Park Sanitation Plant 610 Big Thompson Ave, Estes Park 80517 | (970) 586-3516 |