Contamination is repricing MRF contracts faster than municipalities can renegotiate

Materials recovery facility operators are restructuring municipal contracts away from revenue-share and residue-share arrangements toward fixed per-tonne processing fees, and the shift is arriving faster than most collection programmes can respond to it.

The commercial logic is not complicated. Under a residue-share arrangement, a processor absorbs a defined portion of the cost of handling and disposing of material that should not have been in the stream, and recovers it against commodity revenue. When residue rates rise and commodity values do not, that arrangement transfers an open-ended cost to the party with the least ability to control it.

Residue rates and what drives them

Operators contacted by RecyclerWorld reported inbound residue on single-stream municipal material ranging from 17 to 31 percent by weight, with the upper end concentrated in programmes that had expanded accepted-material lists without changing collection or education.

Three categories dominate. Film plastic and bagged recyclables, which wrap around screens and force line stoppages. Textiles and hoses, which do the same thing with greater mechanical consequence. And bulky rigid items — hoses, cords, small appliances, propane cylinders — which require pre-sort labour and create genuine safety exposure.

The cost of residue is not just disposal. It is disposal plus the pre-sort labour to remove it, plus the downtime it causes, plus the fraction of good material it drags out of the line with it.

“A tonne of contamination does not cost us a tipping fee, it costs us a tipping fee and about twenty minutes of the whole plant,” said Hugh Bellamy, chief operating officer at Northbank Fibre, which processes municipal material at four sites.

The contract mechanics

The emerging structure sets a base processing fee per inbound tonne, with an adjustment mechanism tied to measured contamination above a threshold, and a commodity revenue share that flows back to the municipality above an index-linked floor.

The practical effect is a floor under processor economics and a variable cost line for municipalities. Several operators have also added the right to reject or surcharge individual loads, and to audit collection routes.

“We are not trying to make more money on a good stream. We are trying to stop losing money on a bad one, and the old contract had no mechanism for that at all.”

Municipal exposure

The difficulty for collection programmes is timing. Recycling has historically appeared in municipal budgets as a modest revenue offset or a small net cost. A hard processing fee turns it into a predictable and visible expense, at a scale that frequently requires council approval rather than administrative discretion.

Programmes that have handled this well have generally done three things. They have moved to measured contamination audits with sampling protocols both parties accept, so that fee adjustments are evidentiary rather than adversarial. They have narrowed accepted-material lists to what the processing line can actually recover, resisting the pressure to accept more in the name of participation. And they have funded enforcement — cart tagging, route-level feedback, and in some cases non-collection — rather than general education campaigns.

The programmes struggling are those that expanded acceptance lists to boost diversion metrics and are now paying per tonne for material the facility was never able to sell.