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Fresh Water/ Waste Water Tank Systems for Rent

United Rentals carries a solid selection of portable waste tank rental options for our customers to choose from. Portable waste tanks are great for outdoor events, construction sites and remote workplaces, as well as emergency situations and disaster relief. 

For our full list of portable waste tanks for rent, view the items below. For more information about waste tanks, visit our resource section.

Containment Tray
Cat Class Code

Porta Potty Containment Tray Accessory

  • 4' by 4'
  • Catch spills from the portable restroom
  • Slides underneath porta potty for cleaning or servicing
  • Easy cleanup
Cat Class Code

Fresh Water Supply Kit

  • Accessory for single standard units
  • Freshwater tank included
  • Wastewater containment tank included
  • Non-Potable use only
Cat Class Code

Waste Water Holding Tank

  • Heavy-duty polyethylene for durability
  • Multiple service ports
  • Collect restroom waste or shower gray water
  • Fit snugly under portable restroom or shower trailers

FAQs About Fresh Water/ Waste Water Tank Systems

We carry portable waste holding tank rentals, portable restroom water supply kits and porta potty containment trays. We also provide installation and servicing options for your event or jobsite to ensure your fresh and wastewater needs are met. Whether you’re looking for freshwater tanks or wastewater tanks for your concert, sporting event, construction or disaster site, we have what you need to get the job done. 

Learn more about wastewater tanks in our FAQs section below.


What is a wastewater tank?

A wastewater tank is a container for storing sewage in vehicles, trailers or porta potties. Wastewater tanks help manage sewage and wastewater in an environmentally responsible manner, preventing contamination of groundwater, surface water and ecosystems. Our portable waste holding tanks are made of heavy-duty polyethylene for durability.

Do porta potties have tanks?

Yes, most porta potties have tanks with the capacity to hold anywhere between 5 and 300 gallons of waste and chemicals. We also offer porta potty spill trays for rent which catch any spills or debris during servicing or cleaning.

What is a porta potty holding tank?

Porta potty holding tanks are large, durable containers made to hold excess waste from portable toilets to extend the time needed between emptying. Many holding tanks are made from heavy-duty polyethylene plastic for durability.