Can a restroom trailer's gray water tank be pumped by a standard vacuum truck?

Yes, a restroom trailer's gray water tank can be pumped by the same standard vacuum truck that handles the black water waste. The rental company's vacuum truck is designed to handle both waste streams together, and they will typically service both tanks during the same visit.

Restroom trailers have separate holding tanks for toilet waste (black water) and sink drainage (gray water). The vacuum truck uses its suction hose to empty each tank sequentially. This is standard practice in the industry, and your rental company will include gray water pumping in their service plan. You should confirm this with them when finalizing the contract, but it is not a special request.

Since your festival has no sewer connection, the vacuum truck will transport all waste to an approved disposal facility. Gray water from sinks contains soap and food particles but is less contaminated than toilet waste, yet both require proper disposal under health department rules. Your rental company handles this compliance as part of their service. Ensure the trailer placement allows clear access for the truck on each service day, as blocked units may result in missed service.