Family of four during a septic repair: Is one porta potty enough for two weeks?

One standard portable toilet is enough for a family of four during a two-week septic repair, but only if you get weekly service and manage use carefully. A standard unit holds 50 to 70 gallons, and four people using it full-time for two weeks will fill it up before the first service visit if you don't watch it. I rented one for my bathroom reno, and with two adults and two kids, we hit the tank limit around day five. The rental company's weekly service is the norm, but for heavy use like this, you might need a mid-week pump-out or a second unit.

A deluxe portable toilet has a flushing mechanism and a sink, but its holding tank is often the same size as a standard unit's. The flushing uses more water per use, so it might fill up faster. If you want more capacity, ask the rental company about a unit with a larger tank or schedule an extra service visit. Since your ground is level and the vacuum truck has good access, adding service is straightforward. For two weeks, sticking with one standard unit and adding a service is usually cheaper than renting a second unit, but check with your operator.