Guide · Updated October 14, 2026
Winter Porta Potty Rental in Cortez: Keeping Units Working Below Freezing
Cortez winters are dry but cold. Here is how we keep job site and home units usable from late October to April.
Do porta potties freeze in Cortez winters?
Porta potties can freeze in Cortez from late October to April, when average January lows sit near 17°F and record lows have reached −31°F. The holding tank, the flush water and hand washing station water are what freeze. Winter service adds non-toxic antifreeze to the tank so it stays liquid between weekly visits.
Climate figures: 1991–2020 normals for Cortez, at 6,181 feet elevation.
Which units work best in winter?
Standard porta potties work best in winter because they have no fresh-water lines to freeze. Flushing units and hand washing stations can freeze overnight. For winter, use a standard unit with a hand sanitizer dispenser, or a heated restroom trailer with power on all night.
| Unit | Winter use | Note |
|---|---|---|
| Standard | Recommended | Antifreeze in tank |
| Flushing with sink | Avoid below freezing | Fresh-water lines freeze |
| Hand washing station | Daytime only | Drain at night or use sanitizer |
| Restroom trailer | With power on | Heated; lines winterized for travel |
Where should a winter porta potty go?
Place a winter porta potty on the south or west side of a building, out of the wind, and next to a path you will plow. The service truck must reach the unit every week. Keep it off spots where roof snow slides or where melt water pools and refreezes into ice at the door.
- Sunny side, sheltered from north wind
- Plowed path within 25 feet of the truck
- Not under a roof edge
- Level, so the door does not freeze shut when ice forms
What about higher towns like Rico, Monticello and Hesperus?
Higher towns get colder and snowier than Cortez. Rico sits near 8,800 feet and Monticello near 7,000 feet. We add more antifreeze per visit at higher sites, and we ask that the path be cleared after each storm so weekly service is not skipped.
See our Rico, Monticello and Hesperus pages.