Other Nonhazardous Waste Treatment and Disposal (NAICS 562219): An Investor's Primer

1. Overview

This is the "everything else" corner of the solid-waste business. Under the North American Industry Classification System (NAICS) — the federal statistical taxonomy — code 562219 covers facilities that treat or dispose of ordinary, non-toxic waste using methods that are not landfilling, not burning, and not flushing through a sewer.[1]

Two visible activity clusters sit inside the code:

• Organics processing — mainly composting (turning yard trimmings and food scraps into a saleable soil product), plus a fast-growing tail of anaerobic digestion (breaking down organic waste in sealed tanks to make gas and fertilizer). Census explicitly folds "compost dumps" into this code.[1]
• Centralized nonhazardous liquid and industrial-waste treatment — facilities that treat, solidify, or process non-toxic industrial wastewater and residual waste for a fee.

Why the underlying activity matters to an investor of any kind: waste is one of the most durable, recession-resistant demand streams in the economy, and organics processing is its fastest-changing slice, pushed by state laws that ban food and yard waste from landfills. But the federal industry code itself is a small, fragmented residual category — roughly $2.0 billion in annual receipts across about 709 establishments.[2][4] It is not, by itself, a large or cleanly defined place to put money.

The routes in split cleanly by audience. Public-market investors get exposure almost entirely indirectly, through the big diversified waste companies that run composting, digestion, and liquid-waste treatment as small lines of a much larger collection-and-landfill business. Private investors are where the pure-play action is: composting yards, food-waste recyclers, renewable-gas developers, and industrial-liquid-waste platforms are overwhelmingly privately held or municipally owned.

2. What it is, and what it excludes

NAICS 562219 covers establishments that either (1) operate a nonhazardous waste treatment or disposal facility that is not a landfill, an incinerator, or a sewer, or (2) combine local collection/hauling with operating such a facility.[1] Typical activities include:

• Composting and organic-waste processing (including anaerobic digestion of food and farm waste).
• Centralized treatment of nonhazardous industrial wastewater and liquid waste.
• Physical processing, solidification, or preparation of residual waste.
• Local hauling combined with operation of a qualifying treatment or disposal facility.

The exclusions matter, because they carve most of the money in the waste industry out of this code and into neighboring ones:

These are all separate from 562219.[1] So 562219 is genuinely the leftover: standalone composting and organics/digestion operations, centralized nonhazardous liquid treatment, and niche processing sites.

Ownership is a wide mix — municipalities and public agencies, family-owned operators, employee-owned companies, regional private businesses, private-equity platforms, infrastructure funds, and the organics/treatment arms of the national waste majors. Importantly for the statistics below, a large number of municipal (government-run) yard-waste composting sites are not fully captured by the private-sector business data.

3. How big it is

The official federal figures describe a small, low-headcount industry. These are the supplied ground-truth statistics for the code, not a current total-market estimate:

A few reads. Average pay near $75,700 is respectable for the sector, reflecting equipment operation and site management rather than minimum-wage labor.[2] The U.S. Small Business Administration (SBA) treats a firm as "small" up to $47 million in receipts,[6] which — set against ~$4.1 million average revenue per firm — means essentially the entire industry qualifies as small business. (The SBA figure is a federal-contracting definition, not a measure of industry size.)

The undercount caveat is large here — read it before trusting the totals. County Business Patterns (CBP) counts only private-sector employer establishments; it excludes the self-employed, businesses without employees, and most government employees.[3] The Economic Census likewise largely excludes government-owned establishments.[5] But composting is heavily governmental and heavily small: industry surveys count over 3,000 yard-trimmings composting facilities operating nationwide, of which only about 200 also take food scraps.[14] Many of those are city or county public-works sites that never appear in the 709-establishment figure. On top of that, the composting, digestion, and liquid-treatment operations of the big national waste companies are usually reported under those companies' primary codes (collection or landfill), not under 562219. So treat the ~$2.0 billion / 709-establishment picture as the private, standalone, non-landfill treatment slice — real, but a fraction of the physical organics-and-treatment footprint on the ground.[2][4][14]

The ground-truth file does not provide tons processed, capacity utilization, average tipping fees, margins, or market-growth figures, so those are not stated as code-level totals here. For loose scale context only, the broader North American solid-waste management market is on the order of $78–79 billion (2026 estimate), of which nonhazardous waste is roughly three-quarters; NAICS 562219 is a thin residual carved out of that whole.[19]

4. The investable universe

There is no public pure-play in this code. The listed companies below are diversified waste operators for whom composting, digestion, and nonhazardous treatment are small, fast-growing slivers bolted onto much larger collection and landfill businesses. None reports a pure 562219 segment, so the reported revenue cannot be mapped cleanly to the code — public-market exposure comes packaged inside a broad waste investment. (Revenue figures are approximate, early-2026; exposure notes are editorial judgments from company filings.)

The pure-play operators are private or municipal. These are the businesses whose activity most literally is 562219. They split into two families:

Organics, food-waste, and renewable-gas platforms:

• Denali — the largest independent U.S. organics recycler; reports recycling more than 14 billion pounds of organic material in 2024, converting food waste into compost, renewable energy, and animal feed.[18]
• Vanguard Renewables (owned by asset manager BlackRock) — farm- and food-waste anaerobic digestion for renewable natural gas.
• Divert; Generate (Generate Capital); Anaergia — food-waste diversion, digestion development, and digester technology backed by private capital.

Diversified and nonhazardous-liquid/industrial-waste private operators:

• Municipalities and counties own and run a large share of the yard-waste composting sites nationwide.[14]

For a private investor, the realistic entry points are these platforms and their infrastructure funds, or direct ownership/development of a composting, digestion, or treatment facility — not a stock.

5. How the money works

An organics or treatment facility earns from two sides of the same ton of waste, which is what makes the unit economics distinctive:

1. Tipping (gate) fees — the operator gets paid to take the waste. U.S. tipping fees commonly run $30–60 per ton, and food waste has been landing above $60 per ton as landfill disposal costs climb toward $50–100 per ton in many markets.[15] This is the larger and more reliable revenue line.
2. Product sales — finished compost sells for roughly $40–100 per ton depending on quality and market; digestion facilities instead sell biogas/renewable natural gas (RNG) and fertilizer/soil amendments.[15]

For centralized nonhazardous liquid/industrial-waste treatment, the model is similar but fee-led: generators (manufacturers, restaurants, haulers, municipalities) pay processing/treatment fees by weight, volume, or load, plus contract payments for recurring service, with modest revenue from recovered oils or materials.

The competitive logic mirrors the landfill: an organics facility wins feedstock by pricing its gate fee below the local landfill or transfer-station tipping fee (operators often target roughly a 10% discount), creating a financial pull that diverts material away from disposal.[15] So the single most important external variable is the local landfill tipping fee — the higher it goes, the wider the margin an organics facility can charge and still win the waste. Illustratively, a modest site processing 10,000 tons a year at a $45/ton gate fee generates about $450,000 from tipping alone, before product sales.[15]

The cost base is labor, fuel, vehicle/equipment maintenance, utilities, insurance, compliance, site leases, residual-disposal fees, and capital spending on processing equipment. Profitability hinges on securing low-cost, clean feedstock (contamination — plastics, PFAS — is the enemy), keeping processing costs down, and maximizing product value. The operating metrics that matter most: tons received/processed, revenue per ton, capacity utilization, contamination and recovery rates, residual sent to landfill, contracted-versus-merchant volume mix, haul distance/route density, and maintenance/environmental capex.

Anaerobic digestion adds a third money line: environmental credits. When food waste is digested into RNG and injected into the pipeline or used as vehicle fuel, the operator earns federal Renewable Identification Numbers (RINs) under the Renewable Fuel Standard (RFS). The most valuable "D3" (cellulosic) RINs have traded around $3 per MMBtu (million British thermal units) — a credit stream that can dwarf the physical value of the gas itself; one estimate puts D3 credits at over $41,000/day for a 1,000-MMBtu/day facility versus ~$2,500/day for the gas.[16] That subsidy is what makes many digestion projects pencil out, but it is a policy-dependent revenue line that can swing sharply with RIN prices and EPA rules. Because mixing food waste can demote a project's credits to less-valuable "D5" RINs, feedstock strategy and regulatory classification directly drive digestion returns.[16]

For the diversified majors, none of this moves the needle on its own — organics and treatment are small, high-growth adjuncts to a collection-and-landfill machine whose core economics are route density, landfill airspace, and annual price increases above cost inflation. That is the engine investors are actually buying when they buy WM or Republic.

6. What drives demand

• Landfill-diversion mandates — the strongest secular driver. California's SB 1383 (Senate Bill 1383) requires a 75% cut in organic waste sent to landfills (against a 2014 baseline) and mandates organics collection for essentially all residents and businesses; roughly ten states plus many cities now have some form of organic-waste or food-scrap disposal ban.[13] Each mandate forces feedstock toward composting and digestion facilities.
• The size of the untapped stream. The U.S. generates about 66 million tons of wasted food a year (retail, food service, residential); roughly 60% is landfilled and only about 5% (3.3 million tons) is composted, with about 1% digested.[8] The runway from ~5% toward mandated targets is enormous. For broader context, EPA's most recent national dataset (2018 data) put total municipal solid waste (MSW) at ~292.4 million tons, of which ~69 million was recycled and ~25 million composted (a 32.1% combined rate) — though EPA cautions this series excludes industrial waste and wastewater sludges and is not a measure of the 562219 market.[7]
• Landfill tipping-fee inflation. As disposal gets more expensive, diversion to organics becomes cheaper by comparison — a direct demand pull for treatment capacity.[15]
• Methane and climate policy. Wasted food is responsible for roughly 58% of landfill methane emissions, making organics diversion a headline climate lever and a magnet for both regulation and green capital.[8]
• The renewable-gas market. Utility and corporate demand for RNG, plus RIN credits, pulls food waste toward anaerobic digestion specifically.[16]
• Industrial and infrastructure demand. Compliance requirements for nonhazardous liquid/process waste, plus growth in food waste, used cooking oil, and grease, sustain the liquid-treatment side. EPA's 2024 recycling-infrastructure assessment estimated $36.5–43.4 billion of investment needs through 2030 across MRFs, packaging recycling, composting, and anaerobic digestion — adjacent infrastructure, not 562219 revenue, but a signal of capital flowing toward the sector.[10]

7. Regulation

The industry sits under the Resource Conservation and Recovery Act (RCRA), Subtitle D — the federal framework for nonhazardous solid waste. Subtitle D sets baseline criteria and bans open dumping, but deliberately delegates day-to-day permitting and standards to the states.[9] Composting and treatment facilities are therefore licensed and inspected under a patchwork of state solid-waste rules; permit thresholds, buffer/setback requirements, feedstock limits, and odor controls all vary by state. Additional layers include local zoning/land-use/traffic/noise approvals; environmental monitoring, financial assurance, and closure/post-closure obligations; and, for facilities handling liquid waste or outdoor material, National Pollutant Discharge Elimination System (NPDES) permits for wastewater and stormwater discharges under the Clean Water Act.[11]

Two policy currents dominate the outlook:

• State organics mandates (SB 1383 and peers) are the demand-side regulation — they create the feedstock. They are also uneven in execution: California's own program is running behind its 2025 targets, with only about half of local governments fully participating, which tempers the near-term ramp even as the legal requirement stands.[13]
• PFAS ("forever chemicals"). Per- and polyfluoroalkyl substances (PFAS) are the key emerging risk-side regulation. PFAS are not currently listed as federal hazardous waste, so composting and digestion facilities set their own acceptance criteria and carry the liability of what they take in.[12] EPA has issued interim disposal guidance and proposed adding certain PFAS as "hazardous constituents," and several states are moving independently — including scrutiny of PFAS in compost and biosolids (treated sewage sludge sometimes used as feedstock).[12] Tightening PFAS rules could restrict feedstocks, raise testing costs, and create retroactive cleanup exposure — the single biggest regulatory wildcard for the sector.

For investors, the permit file is as important as the income statement: permit duration, expansion rights, accepted-waste limits, environmental liabilities, and closure obligations can determine asset value.

8. Competitive dynamics and consolidation

At the national level, 562219 is highly fragmented and unconcentrated. Census concentration data show the top 4 firms holding only 28.4% of receipts, the top 8 42.5%, the top 20 58.8%, and the top 50 74.8%, with a Herfindahl-Hirschman Index (HHI, a standard market-concentration measure) of just 303.9 — far below the ~1,500 threshold regulators treat as "concentrated."[4] In plain terms: no one dominates the standalone-treatment code nationally.

But waste is a local business — routes, tipping points, and hauls only pencil within a limited radius — so the meaningful competition is regional, and there the bigger operators can be locally dominant. Scale advantages include more reliable feedstock and higher utilization, lower transport cost through route density, easier financing of equipment and compliance, more outlets for recovered products, internal disposal options, and centralized sales/safety/regulatory functions.

The strategic pattern to watch is the majors and private capital buying into organics and treatment: Republic operates about 25 organics facilities and is building compost parks capable of hundreds of thousands of tons a year; WM and others are expanding composting and landfill-gas/RNG capacity.[8] Public operators (Casella, Waste Connections) explicitly describe recurring "tuck-in" acquisitions as a growth model.[22][24] Independent platforms consolidate the niches — Denali on food waste,[18] and infrastructure/private-equity money behind LRS, Valicor, and Liquid Environmental Solutions on the diversified and liquid-treatment side.[28][29][30] Expect the broader waste industry's pattern — steady roll-up of small local operators by better-capitalized players — to keep extending into organics and treatment, with private capital funding digestion for its capital intensity and credit-driven returns.

9. Risks

• Feedstock and contamination. Facilities live or die on clean, steady feedstock. Plastic contamination degrades compost value; PFAS contamination is a growing acceptance and liability problem with no settled federal standard.[12]
• Policy dependence. Two revenue-critical policy levers — state organics mandates and federal RIN credits — can change. Weak enforcement of mandates (California's lag) slows feedstock; a drop in RIN prices can undercut digestion economics quickly.[13][16]
• Commodity/product-price exposure. Finished-compost, recovered-oil, and RNG prices fluctuate; the tipping/treatment-fee side is steadier than the product side. Merchant volume without contracted fees is the most exposed.[15][16]
• Capital intensity and utilization (digestion/treatment). Digesters and treatment plants are expensive and slow to build; an underused facility after costly construction is a core downside, and returns can depend on credits outside the operator's control.[16]
• Permitting, odor, and siting. State-by-state permitting and local nuisance complaints (odor, noise, traffic) can delay or block facilities; permit denial or renewal failure is a first-order risk.[9]
• Operational and contract risk. Environmental incidents (spills, fires, worker safety), municipal contract rebids and rate pressure, customer concentration in industrial/municipal accounts, and cost inflation (labor, fuel, insurance) all bite. Private-equity-backed platforms add debt and integration risk.
• Taxonomy/misclassification risk. A public company can appear to offer substantial exposure while only a small share of its economics actually belongs to 562219 — and material can cross into hazardous, landfill, or incineration handling. For anyone seeking a public pure-play, there simply isn't one.

10. How to invest, and the outlook

Public-market route. You cannot buy NAICS 562219 directly. The practical vehicle is the diversified waste majors — WM, Republic Services (RSG), Waste Connections (WCN), GFL, Casella (CWST) — which own the composting, digestion, and treatment assets inside broad, defensive, cash-generative franchises. Analyze them through their operating disclosures rather than consolidated revenue alone: processing/organics growth, pricing per ton, commodity sensitivity, capital spending, acquisition discipline, environmental liabilities, and permitted capacity. These are classic "steady compounder" names — pricing power above inflation, recurring contracted revenue, and long records of annual dividend increases — which is why they trade at premium valuation multiples. Buying them is a bet on waste broadly, with organics as a growth kicker, not a targeted bet on treatment/composting. Investors who want the organics theme more concentrated sometimes look to RNG and biogas developers, but those are more volatile and policy-sensitive.[16]

Private-market route. This is where 562219 actually lives. Options range from directly owning or developing a composting, anaerobic-digestion, or nonhazardous-liquid-treatment facility (a real-asset play driven by local tipping fees and feedstock supply), to backing the private platforms — Denali, Divert, Vanguard Renewables, Generate, Anaergia on organics; LRS, Valicor, Liquid Environmental Solutions on diversified/liquid treatment — or the infrastructure and private-equity funds financing them, plus project finance and secured lending. Municipal partnerships (public sites operated under contract) are another entry point. Key diligence questions:

• Is feedstock contracted or merchant?
• How long do permits and customer contracts run?
• Who bears contamination and residual-disposal costs?
• Are recovered-product outlets secured?
• What is sustainable capacity utilization?
• How much maintenance and environmental capital is required?
• Are environmental liabilities fully reserved and insured?
• Can the platform achieve route density and acquisition synergies?

Near-term outlook (forward-looking). The structural tailwind is real: with only ~5% of food waste composted today against escalating state mandates and $60+/ton food-waste disposal costs, the direction of feedstock is one-way toward diversion.[8][15] The counterweights are equally real: mandate enforcement is lagging, RIN-driven digestion economics are volatile, and PFAS regulation is an unresolved liability overhang.[12][13][16] The base case is steady, moderate growth — less cyclical than manufacturing but more volatile than a pure contracted utility. The most attractive niches are fee-backed organics, centralized nonhazardous liquid treatment, and processing facilities with secure feedstock and offtake; the weakest are merchant recycling operations dependent on unstable commodity spreads. In short, NAICS 562219 is best understood as a small, fragmented, regulation-heavy infrastructure niche with recurring demand and consolidation potential — best owned by public investors through the diversified majors, and by private investors through the specialist platforms and the facilities themselves — not as a single clean public-equity sector.

---

Sources

1. U.S. Census Bureau. "2022 NAICS Definition — 562219 Other Nonhazardous Waste Treatment and Disposal." 2022. https://www.census.gov/naics/?input=562219&year=2022
2. U.S. Census Bureau. "County Business Patterns (CBP), NAICS 562219." 2023. https://data.census.gov/table/CBP2023.CB2300CBP?n=562219
3. U.S. Census Bureau. "County Business Patterns Methodology." 2025. https://www.census.gov/programs-surveys/cbp/technical-documentation/methodology.html
4. U.S. Census Bureau. "2022 Economic Census — Concentration of Largest Firms / Selected Statistics, NAICS 562219." 2022. https://data.census.gov/table/ECNSIZE2022.EC2200SIZECONCEN?codeset=naics~562219
5. U.S. Census Bureau. "Economic Census: Understanding Industry Classification (NAICS) and Coverage." 2025. https://www.census.gov/programs-surveys/economic-census/year/2022/guidance/understanding-naics.html
6. U.S. Small Business Administration. "Table of Small Business Size Standards (NAICS 562219)." 2023. https://www.sba.gov/document/support-table-size-standards
7. U.S. Environmental Protection Agency. "Facts and Figures about Materials, Waste and Recycling" (2018 data). 2025. https://www.epa.gov/facts-and-figures-about-materials-waste-and-recycling
8. U.S. Environmental Protection Agency. "Food: Material-Specific Data" and "Wasted Food Report." 2024. https://www.epa.gov/facts-and-figures-about-materials-waste-and-recycling/food-material-specific-data
9. U.S. Environmental Protection Agency. "Resource Conservation and Recovery Act (RCRA) Overview." 2025. https://www.epa.gov/rcra/resource-conservation-and-recovery-act-rcra-overview
10. U.S. Environmental Protection Agency. "U.S. Recycling Infrastructure Assessment and State Data Collection Reports." 2024. https://www.epa.gov/smm/us-recycling-infrastructure-assessment-and-state-data-collection-reports
11. U.S. Environmental Protection Agency. "Stormwater Discharges from Industrial Activities (NPDES)." 2026. https://www.epa.gov/npdes/stormwater-discharges-industrial-activities
12. Waste360 / SCS Engineers. "EPA Updates Interim PFAS Destruction and Disposal Guidance — implications for composting operations." 2025. https://www.waste360.com/industry-insights/epa-updates-interim-pfas-destruction-and-disposal-guidance-what-it-means-for-msw-recycling-and-composting-operations
13. Waste Dive. "California's organics diversion mandate (SB 1383): laws, changes, and status." 2025. https://www.wastedive.com/news/sb-1383-laws-changes-procurement-collection-requirements/727990/
14. BioCycle. "Nationwide Survey: Full-Scale Food Waste Composting Infrastructure in the U.S." 2025. https://www.biocycle.net/us-food-waste-composting-infrastructure/
15. BioCycle / Green Mountain Technologies. "Composting economics: tipping fees, compost pricing, and revenue forecasts." 2024–2025. https://compostingtechnology.com/landfill-costs-are-tipping-the-scale-toward-composting/
16. Waste Dive; RINSTAR. "RNG pricing, D3 RINs, and food-waste digestion economics." 2025. https://www.wastedive.com/news/rin-pricing-challenges-landfill-waste-projects-biogas-monthly-october-2025/804745/
17. Waste Dive. "Republic Services planning major increase in organics processing." 2025. https://www.wastedive.com/news/republic-services-organics-processing-infrastructure-growth-california-denver/818678/
18. Denali. "Denali Organics Recycling Solutions" (2024 volumes; company profile). 2025. https://www.denalicorp.com/
19. Mordor Intelligence. "North America Solid Waste Management Market — Size & Forecast." 2026. https://www.mordorintelligence.com/industry-reports/north-america-solid-waste-management-market
20. Waste Management, Inc. "Annual Report on Form 10-K." 2026. https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000823768&type=10-K
21. Republic Services, Inc. "Annual Report on Form 10-K." 2026. https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001060391&type=10-K
22. Waste Connections, Inc. "Annual Report on Form 10-K." 2026. https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001318220&type=10-K
23. GFL Environmental Inc. "Consolidated Financial Statements." 2026. https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001780232&type=annual
24. Casella Waste Systems, Inc. "Annual Report on Form 10-K." 2026. https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000911177&type=10-K
25. Rumpke Waste & Recycling. "About Us." 2026. https://www.rumpke.com/about-us
26. Recology. "Employee-Owned." 2026. https://www.recology.com/about-us/employee-owned/
27. Waste Pro USA. "Company Profile." 2025. https://www.wasteprousa.com/
28. Macquarie Asset Management. "Lakeshore Recycling Systems." 2026. https://www.macquarie.com/us/en/about/company/macquarie-asset-management.html
29. Valicor Environmental Services. "Pritzker Private Capital to Acquire Valicor." 2019. https://www.valicor.com/news/pritzker-private-capital-to-acquire-valicor
30. Goldman Sachs Asset Management. "Goldman Sachs Alternatives to Acquire Liquid Environmental Solutions." 2025. https://am.gs.com/en-gb/advisors/news/press-release/2025/liquid-environmental-solutions
31. EQT Group. "EQT Broadens Reworld Investor Base, Welcoming GIC as Strategic Investor." 2024. https://eqtgroup.com/news/eqt-broadens-reworld-investor-base-welcoming-gic-as-strategic-investor-2024-10-02