The Portable Water Systems and Waste Systems that we carry are interchangeable for all waste and water tank needs, making us the perfect solution for you! This also makes our water systems and waste systems a great fit for both temporary and permanent locations, and for an unlimited or fixed amount of users. With a 250 gallon holding capacity (which can accomodate 5 to 10 people for a typical 40-hour week), our durable waste holding tank is compatible with most standard plumbing configurations. The unit’s dimensions are 18″ x 48″ x 72″.