Buying a used vacuum truck is a common way to start, but an older model from the 2010s requires a thorough inspection for specific issues. The main pitfalls are hidden rust in the chassis and tank, a worn vacuum pump, and outdated or non-transferable waste-hauler permits from the state or county.
You must inspect the truck's undercarriage and inside the waste tank for rust, which can lead to costly repairs or failure. A vacuum pump rebuild is a significant expense, so check its service history and listen for unusual noise during a test. Most importantly, contact your local environmental health department to confirm if the truck's existing septage hauler permit can be transferred to you. Many jurisdictions issue permits to the operator, not the vehicle, meaning you'll need to apply for a new one regardless, which involves an inspection of the truck's tank and pump.
For your twenty standard portable toilets, a used truck with a 1,000- to 1,500-gallon tank is typical. Ensure it has the power to handle the weight when full and that the hose reach is sufficient for your planned service visits. Factor in the cost of any needed repairs, the new permit fees, and insurance before deciding.
