Municipal staff
Planners, DPW, zero-waste committees deciding whether this site fits your jurisdiction.
Book a fit call
Proposals
Westchester County WWTP
A WWTP with anaerobic digestion already operational — the lowest-capex archetype in the ten and the fastest path to a funded pilot.
How this site was selected: Mapping layers pair feedstocks with infrastructure, the matrix approach (industrial/hauling, feedstock variation, pyrolysis, space/expansion) distills the strongest candidates, and the 25-50 mile coverage logic keeps proposals balanced. Read the methodology.
Why this site
Site-selection rationale
Westchester County WWTP is the lowest-capex proposal in the ten because the anaerobic digestion hardware is already in the ground. A pilot here is a co-digestion study — adding food-waste-law diversion feedstocks into an existing digester — not a new build, which changes the funding conversation entirely.
On the matrix: anaerobic digestion is headline green (hardware operational); feedstock variation is moderate-to-green (biosolids plus co-digestion, with Yonkers Raceway's equine waste as a specialty side stream); industrial & hauling is green through the existing municipal logistics. Space for circular expansion is watch-list (urban campus constraints).
For coverage, Westchester is the NYC-adjacent anchor and pairs with Wheelabrator Westchester inside the county's two-per-county cap. The two together give Westchester the urban-and-industrial combination that the portfolio needs as its southern bookend.
System diagram
Tip: open this in a new tab to zoom, then use it in meetings as a shared reference.
Lowest-capex advantage: The anaerobic digester is already operating. A pilot here is a co-digestion feasibility study, not a new build — which shifts the funding conversation from capital to diligence.
Biosolids flow snapshot
Westchester's 2015 snapshot shows biosolids moving across landfill, land application, storage, and hauling lanes for a dense urban service area. Use it to frame what the existing digester is already handling before you size any co-digestion additions.
Evidence & policy context
The drivers behind this proposal
The same forces that shape HVB's mission shape the case for this site — four policy and ecological drivers, grounded in a shared county-scale data resource.
Food waste diversion
Tie this proposal into New York's 2022 organics mandate and the diversion tailwind it has created.
Read the food waste law
Climate mandates (CLCPA)
Anchor the system in the state's methane and RNG-pathway accountability framework.
View the CLCPA pathways
Environmental justice
Screen this site against community burden and build benefits into the pilot from day one.
Explore the EJ policy
Invasive biomass loops
Consider whether invasive biomass streams (water chestnut, others) can contribute feedstock to this site.
See invasive biomass pilotsWhere to start
Pick the lane that fits you.
Now that you've read the briefing, pick the path that fits your role. Each leads to a 30-minute fit call to discuss this specific site.
Granting agency
Program officers assessing portfolio fit, site-selection rigor, and replicability.
Book a fit callCommunity
Organizers, environmental groups, and residents around this site wanting a seat at the table.
Book a fit callPress & research
Journalists, educators, and researchers covering the Hudson Valley circular organics story.
Book a fit callReady to move
Book a 30-minute fit call about Westchester County WWTP.
We'll confirm the right lane — advisory, pilot, partnership — and pinpoint the fastest next artifact to ship together.