Emergency Toilet option

Keeping human waste separate from everything else is important to keep illness from spreading. Most people are used to having a toilet. But what if the sewage or water pumps are down? Keeping filling the sewage, when they are down, simply means you are pushing sewage through overflow valves in the neighborhood.  Also you need something to flush it with. Having too much dry matter in the sewage would simple clog it.

For short term emergency's I would recommend to just use plastic bags to store human waste until you are able to dispose of it. One big bag to line a bucket with to catch leaks and smaller bags which can be replaced after each use.

Chemical solutions are a risk to store long term (they can leak) and relatively heavy and bulky. In the end you still have to dispose of the chemical solution.

As for more long term solutions, like dry composting toilets. They are fine when the power goes down, but not practical to buy just for emergency's.

My emergency set up is a reliant toilet bucket. The toilet seat lid, makes it more comfortable to do your business. The bucket is filled with toilet paper, disinfecting cleaning wipes and trash bags. The disinfecting cleaning wipes are rotated out occasionally to prevent it from drying out. A cheap and simple solution which can stand up storage and most emergency's.