Where Concord's Trash Actually Goes

Most people never think about what happens after the truck leaves. It is worth ten minutes, because the answer explains why some material costs more to dispose of than others, why sorting is worth doing, and why the disposal arrangements in Hopkinton are different from the ones in Concord.

The short version

Concord's residential trash is collected curbside by contractor, dropped at a transfer station, and processed at a waste-to-energy facility a few miles up the river in Penacook rather than being trucked to a landfill. Recyclables are sorted and baled for market. The city moved to that disposal arrangement under a contract that took effect in July 2024, having previously sent its waste to a landfill in the north of the state.

Curbside collection and the purple bags

Residential properties of seven units or fewer in Concord and Penacook get weekly curbside collection, Monday through Friday, with Saturday added during holiday weeks. Trash must be at the curb by 7am on collection day.

The distinctive part is the pay-as-you-throw programme. Concord residents with curbside collection must use purple PAYT bags, which are bought at retailers around the city. The mechanism is straightforward: you pay for what you throw away rather than a flat fee, which gives every household a direct financial reason to recycle more and generate less.

It works. The city has reported that trash tonnage dropped by around 40 percent after the PAYT programme began in 2009. That is a substantial change in behaviour from a fairly simple pricing signal.

Recycling is collected alongside, and the city provides a bin, though any clearly labelled rigid container is acceptable. Leaves and yard waste are handled separately through the spring and autumn collection programmes rather than going in with trash.

The transfer station on Old Turnpike Road

The Concord Transfer Station at 77 Old Turnpike Road is the drop-off point for everything that does not belong at the curb: furniture, appliances, construction debris, scrap metal, electronics, tyres, automotive waste and bulky items generally.

It is a publicly owned facility operated under contract by Casella Waste Systems, open Monday to Saturday from 8am to 4pm and closed Sundays and trash holidays. Concord residents need proof of residency to get residential rates, and there is a minimum charge on scaled materials.

Access is not limited to Concord. Residents and small businesses in the member communities of the Concord Regional Solid Waste/Resource Recovery Cooperative can use it, which covers a substantial part of the region.

The waste-to-energy plant in Penacook

This is where most of the region's non-recycled household waste ends up. The WIN Waste Innovations facility in Penacook — long known locally as Wheelabrator Concord — burns waste to generate electricity rather than burying it.

The operator reports the plant converts around 188,000 tons of post-recycled waste a year into energy, enough to power the equivalent of more than 9,400 homes and businesses. Metals are recovered from the ash stream for recycling.

Concord's decision to move its disposal there in 2024 was made partly on cost and partly on the fact that New Hampshire's waste management hierarchy places waste-to-energy above landfilling. It also keeps the waste local, which cuts transport emissions and means the community handling the material is the one generating it.

Whether incineration is preferable to landfilling is genuinely debated, and there are people in Penacook with views about living next to the plant. What is not in dispute is that both sit below reduction, reuse and recycling in the state's preference order.

The regional cooperative and why neighbouring towns differ

The Concord Regional Solid Waste/Resource Recovery Cooperative was formed in 1985 to give member communities collective bargaining power on tipping fees. Its membership covers Concord, Franklin and Laconia along with a long list of towns including Boscawen, Bow, Canterbury, Loudon, Pembroke, Allenstown, Dunbarton, Hopkinton, Northfield, Weare, Warner and Webster.

Membership does not mean identical arrangements, and this catches people out. Over half of Merrimack County's towns send their waste to the Penacook plant. Hopkinton and Webster share a transfer station and truck their waste to the Turnkey landfill in Rochester instead. Chichester and Epsom belong to the separate BCEP district with Barnstead and Pittsfield, which contracts with Turnkey directly. Henniker's waste is hauled by a private company to Penacook, with excess diverted to Turnkey when the plant is at capacity.

None of this changes your quote. It does mean that anyone claiming to know the region ought to know it.

New Hampshire's disposal reduction goal

The framework above all of this is RSA 149-M, New Hampshire's Solid Waste Management Act. In 2021 the legislature replaced an older diversion target with a disposal reduction goal: cut the weight of municipal solid waste and construction and demolition debris disposed in the state by 25 percent by 2030 and 45 percent by 2050, measured against 2018 baselines.

Two details matter. First, it is expressly a goal rather than a mandate, so no household or business faces a penalty for missing it. Second, it targets disposal rather than diversion, meaning it can be met by generating less as well as by recycling more.

The statute also sets a hierarchy of preferred methods, with source reduction at the top, followed by reuse, recycling and composting, then energy recovery, and disposal last. The state's biennial reports have shown incremental progress, and NHDES has commissioned waste characterisation and food waste studies to understand where the remaining tonnage sits.

What this means for your container

Three practical consequences.

Sorting genuinely changes what you pay. Different material streams have different processing costs. Clean concrete and brick get crushed and reused as aggregate. Clean wood, metal and cardboard have recovery routes. Mixed waste has none of that. Keeping streams separate is the single biggest lever a customer has over their invoice.

Scrap metal is worth money to you. Cast iron radiators, tubs, copper pipe and steel from a Concord renovation have real value at a scrap yard. Burying them in a mixed container converts an asset into a cost.

Heavy material needs its own box. Concrete, brick and asphalt are recoverable when clean and expensive when contaminated. That is why we set a separate clean-fill container rather than letting masonry go in with the rest.

None of it is complicated. It mostly amounts to putting things in the right pile before you put them in the box, and the difference shows up on the invoice.