Suffolk City Council on Wednesday voted to remain a member of the regional waste disposal agency after its current agreements expire in 2018.

“I’m confident this is a relationship that’s going to be long-term beneficial to the city of Suffolk,” City Manager Patrick Roberts told the council members, who voted unanimously.

The Southeastern Public Service Authority’s use and support agreements with its eight member localities expire in January 2018, and the localities have been working to hash out details of “SPSA 2.0.”

Part of that process is for each locality to consider the new use and support agreement, which is what Suffolk City Council gave its stamp of approval to on Wednesday.

The city council also approved a host agreement last month that gives the city certain benefits and protections for hosting the regional landfill, including a host fee of $4 per ton of trash that is delivered to the landfill.

Wednesday’s resolution authorizes Roberts to enter into the agreement if it is in “substantially the same form” as presented to the council.

The agreement provides for an initial 15-year term with a 10-year renewal option. The city is committing to deliver 100 percent of municipal solid waste — which doesn’t include recycling — to the authority for disposal.

Roberts suggested there is a chance the $16.50 monthly fee paid by each household could change after 2018.

The current fee is based on the costs of the city’s TFC Recycling contract and curbside collection of waste, Roberts said, with only about $3 needed for recycling. However, after January 2018, that fee will also incorporate the costs needed for trash disposal, minus any benefit the city receives from its host agreement.

Roberts said he should be able to estimate the fee by the middle of 2017.

“I think we need to make sure we give the citizens a heads-up,” Vice Mayor Leroy Bennett said.