Can a porta potty be left in place over a snowy winter?

Question

We're halfway through renovating a small cabin in the mountains and had to pause for winter. The crew left a standard portable toilet on a gravel pad near the driveway back in October. It's been fine so far, but we're expecting heavy snow soon, several feet deep some years. The unit is empty now since no one's been up there, but I'm wondering if it's okay to just leave it there until spring. The gravel pad is level, but the access road isn't plowed, so a service truck couldn't get through until the snow melts. Should I be worried about the cold damaging the holding tank or something else? What do people usually do with porta potties over a snowy winter when they're not in use?

Luis A. · Answer

A standard portable toilet can be left in place over a snowy winter if it is empty and not in use. The cold will not damage the holding tank or the structure if no liquids are present to freeze and expand. Your unit on a level gravel pad is in a good position to handle snow load, but you must ensure the vent stack remains clear to prevent blockages.

People usually leave unused standard units in place over winter, especially in remote locations with no truck access. If the unit had waste, freezing would be a problem, but an empty tank poses no risk. Just verify the unit is secured against high winds with staking or tie-downs if your area is prone to gusts.

When spring arrives and you resume work, schedule a service visit for cleaning and deodorizer recharge before use. For occupied sites in winter, operators add antifreeze to the holding tank, but that is not needed here.

Can a porta potty be left in place over a snowy winter?

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