Composting accounted for 12.1 percent of municipal waste treatment in the EU-27. This share places it as a secondary route among disposal and recovery options. Data on process controls, emissions reductions, soil benefits, and compliance standards show the measured results.
Key Takeaways
- 2022 EU-27 composting accounted for 12.1% of municipal waste treatment, quantifying composting’s share relative to other disposal/recovery routes.
- US EPA’s accepted compost quality criteria include compost maturity tests; a common threshold is a Solvita reading of 7 or higher for stability suitable for general application (operational performance target).
- Compost screening often uses a 10–20 mm screen size range depending on end use; typical overs contaminant removal is quantified by screening efficiency in facility audits.
- A windrow composting system’s oxygen demand drives aeration; a peer-reviewed study reports that forced aeration can maintain O2 concentrations in the range of 10–20% during active composting, improving stability outcomes.
- IPCC AR6 reports that organic waste disposed in landfills can be a major source of methane emissions, reinforcing that diversion via composting reduces methane formation compared with landfilling.
- A meta-analysis found that compost application can reduce soil-borne disease incidence by 30% on average, demonstrating agronomic disease-suppression benefits relevant to compost outputs.
- Compost use increased soil organic carbon by an average of 0.28% across studies in a peer-reviewed synthesis, quantifying long-term soil improvement potential.
- Fortune Business Insights projected the compost market to reach about $9–10 billion by 2032, implying a multi-year growth trajectory for compost products and services.
- Allied Market Research forecasts the compost market to reach $XX by 2031 at roughly mid-single-digit CAGR, reflecting increasing adoption of composting across municipal and agricultural end markets.
- Global construction demand for compost-based soil amendment products is tied to broader landscaping markets; IMARC Group estimates that the soil conditioner market will surpass $5 billion by 2027, supporting a related demand pool for compost.
- In a peer-reviewed study, composting reduces pathogen concentrations (e.g., fecal indicator bacteria) by several log units under effective thermophilic conditions, quantifying safety improvements.
- EU Regulation (EU) No 142/2011 sets microbiological requirements for processed animal protein and related material; composting-based controls depend on the required log reductions for pathogens, which are defined in the regulation.
- The USCC’s Seal of Testing Assurance (STA) program sets measurable testing criteria for compost products, including contaminants and maturity/stability metrics.
- Japan’s Food Recycling Law led to an observed increase in food waste recycling rates to 63% in 2019, with composting among the major recycling routes for suitable organics
- At 55°C, the US EPA’s Biosolids rule-based vector attraction reduction treatment process time/temperature criteria for Class A biosolids include holding conditions that meet pathogen reduction goals; composting operations that meet equivalent thermal exposure can achieve Class A pathogen safety outcomes
Composting cuts methane from landfills and improves soil health, while meeting proven quality and safety targets.
Related reading
01 · Category
Waste Management Trends1 stats
01
2022 EU-27 composting accounted for 12.1% of municipal waste treatment, quantifying composting’s share relative to other disposal/recovery routes.
Interpretation
Waste Management Trends Interpretation
In Waste Management Trends, composting in 2022 made up 12.1% of municipal waste treatment in the EU-27, showing it is a meaningful but still developing share of waste recovery compared with other treatment options.
02 · Category
Operational Performance11 stats
01
US EPA’s accepted compost quality criteria include compost maturity tests; a common threshold is a Solvita reading of 7 or higher for stability suitable for general application (operational performance target).
02
Compost screening often uses a 10–20 mm screen size range depending on end use; typical overs contaminant removal is quantified by screening efficiency in facility audits.
03
A windrow composting system’s oxygen demand drives aeration; a peer-reviewed study reports that forced aeration can maintain O2 concentrations in the range of 10–20% during active composting, improving stability outcomes.
04
In a controlled study, turning frequency of 3–4 times per month reduced composting time by about 20% compared with 1–2 turns per month, reflecting operational scheduling effects.
05
In-vessel composting can reduce composting time to 2–6 weeks for some feedstocks compared with 2–6 months for passive windrows, quantifying throughput differences (where reported in studies and industry references).
06
Odor mitigation via biofilters has been measured to achieve 60–90% reductions in specific volatile organic compound (VOC) classes in full-scale or pilot systems, improving operational environmental performance.
07
A life-cycle and process review reports that mass reduction during composting (losses mainly as CO2 and water) is commonly 30–50% depending on feedstock moisture and bulking agents, quantifying yield changes.
08
Compost yield from municipal biosolids and organics is commonly reported at 25–60% of incoming wet mass after curing, providing a measurable output yield range used in facility planning.
09
Moisture content targets of about 50–60% are commonly used for effective aerobic composting, measurable as an operational control parameter.
10
Compost electrical conductivity (EC) is routinely used as a quality metric; a quality guideline for compost maturity often recommends EC below 4 mS/cm for sensitive crops (operational quality target).
11
Grit removal and pre-processing in source-separated organics can reduce contamination; a study reports contamination decreases by about 15–30% after improved screening and pre-sort steps.
Interpretation
Operational Performance Interpretation
From an operational performance perspective, the data suggest that tightening process controls and equipment choices pay off quickly, with more frequent turning cutting composting time by about 20% and in-vessel systems compressing timelines from roughly 2–6 months in passive windrows to about 2–6 weeks, while screening and aeration practices help target stability and oxygen needs and biofilters deliver 60–90% VOC odor reductions.
03 · Category
Environmental & Carbon Impacts7 stats
01
IPCC AR6 reports that organic waste disposed in landfills can be a major source of methane emissions, reinforcing that diversion via composting reduces methane formation compared with landfilling.
02
A meta-analysis found that compost application can reduce soil-borne disease incidence by 30% on average, demonstrating agronomic disease-suppression benefits relevant to compost outputs.
03
Compost use increased soil organic carbon by an average of 0.28% across studies in a peer-reviewed synthesis, quantifying long-term soil improvement potential.
04
In a peer-reviewed study, adding compost increased crop yields by 10–30% compared with control treatments in multiple field trials, quantifying agronomic performance effects.
05
A peer-reviewed comparative life-cycle assessment found that composting generally yields lower global warming potential than landfilling for biowaste, with savings often several hundred kg CO2e per tonne depending on assumptions.
06
A systematic review reports that compost application can reduce heavy metal bioavailability in soils by binding metals in the compost and humic substances, with studies reporting reductions of up to ~50% in bioavailable fractions.
07
Aerated static pile composting has been shown in pilot studies to reduce odors and ammonia emissions by 30–50% relative to some unmanaged pile approaches, supporting environmental performance benefits for well-managed systems.
Interpretation
Environmental & Carbon Impacts Interpretation
Across environmental and carbon impacts, composting stands out for cutting landfill-driven methane risks and delivering measurable soil benefits, including an average 0.28% increase in soil organic carbon and typical crop yield gains of 10 to 30% in field trials.
04 · Category
Market Size & Growth5 stats
01
Fortune Business Insights projected the compost market to reach about $9–10 billion by 2032, implying a multi-year growth trajectory for compost products and services.
02
Allied Market Research forecasts the compost market to reach $XX by 2031 at roughly mid-single-digit CAGR, reflecting increasing adoption of composting across municipal and agricultural end markets.
03
Global construction demand for compost-based soil amendment products is tied to broader landscaping markets; IMARC Group estimates that the soil conditioner market will surpass $5 billion by 2027, supporting a related demand pool for compost.
04
In the EU, policies to increase circular economy adoption have supported organics collection and treatment; the European Commission’s impact assessment estimated annual benefits from improved waste management of several tens of billions of euros across EU member states (including composting routes).
05
The US market for composting equipment (a proxy for investment in compost facilities) is growing as organics regulations expand; MarketsandMarkets estimated the composting equipment market at several hundred million dollars with growth into the 2030s.
Interpretation
Market Size & Growth Interpretation
The compost market is on a clear growth path toward around $9–10 billion by 2032 according to Fortune Business Insights, with additional forecasts pointing to further expansion through the early 2030s as organics rules and circular economy policies drive rising investment and adoption.
More related reading
05 · Category
Food Safety & Standards6 stats
01
In a peer-reviewed study, composting reduces pathogen concentrations (e.g., fecal indicator bacteria) by several log units under effective thermophilic conditions, quantifying safety improvements.
02
EU Regulation (EU) No 142/2011 sets microbiological requirements for processed animal protein and related material; composting-based controls depend on the required log reductions for pathogens, which are defined in the regulation.
03
The USCC’s Seal of Testing Assurance (STA) program sets measurable testing criteria for compost products, including contaminants and maturity/stability metrics.
04
The US EPA’s 503 biosolids rule defines pollutant concentration limits; those regulatory thresholds apply to land application of treated biosolids and indirectly guide composting facility compliance for similar contaminant concerns.
05
EU Regulation 2019/1009 (EU fertilising products) requires measurable labeling and conformity assessment for CE-marked compost-based fertilisers (quantified by compliance test results).
06
A peer-reviewed study shows that thermophilic composting can achieve 3-log (99.9%) reductions of Salmonella when time/temperature criteria are met, quantifying compliance relevance.
Interpretation
Food Safety & Standards Interpretation
Across both peer reviewed research and formal standards, composting increasingly demonstrates food safety value through measured pathogen reductions of up to 3 log units or 99.9 percent under proper time and temperature conditions, while EU and US regulations and certification programs specify the microbiological and contaminant thresholds needed to make those outcomes credible for compost products.
06 · Category
Industry Trends1 stats
01
Japan’s Food Recycling Law led to an observed increase in food waste recycling rates to 63% in 2019, with composting among the major recycling routes for suitable organics
Interpretation
Industry Trends Interpretation
Japan’s Food Recycling Law appears to have driven a notable jump in food waste recycling to 63% by 2019, underscoring composting’s rising role within broader industry trends in waste recovery.
07 · Category
Performance Metrics6 stats
01
At 55°C, the US EPA’s Biosolids rule-based vector attraction reduction treatment process time/temperature criteria for Class A biosolids include holding conditions that meet pathogen reduction goals; composting operations that meet equivalent thermal exposure can achieve Class A pathogen safety outcomes
02
US composting is governed by pathogen reduction and vector attraction reduction approaches under 40 CFR Part 503; Class A requires meeting specific treatment standards including time/temperature criteria (a measurable compliance basis)
03
In the US EPA’s 40 CFR Part 503 regulation, maximum concentrations for metals (e.g., cadmium, copper, lead, mercury) are expressed in mg/kg (dry weight), providing measurable contaminant compliance thresholds applicable to biosolids-derived compost products
04
Composting facility design documents frequently target oxygen supply to maintain aerobic conditions; a controlled full-scale operational study measured O2 above 10% v/v during active composting phases for well-aerated systems
05
Biofilters treating composting off-gas have been reported in field studies to remove 60–90% of specified VOC classes, improving odor-control performance (measured removal efficiency)
06
A peer-reviewed experimental study reported that thermophilic composting at appropriate time-temperature conditions achieved about 3 log10 (99.9%) reductions of Salmonella in composted materials
Interpretation
Performance Metrics Interpretation
From a performance metrics perspective, US composting must deliver measurable pathogen and vector attraction reduction under EPA time temperature criteria at set temperatures like 55°C while also adhering to regulated metal concentration limits, and studies show that odor and VOC control can remove roughly 60 to 90 percent of targeted classes and that properly managed thermophilic composting can achieve around 3 log10 pathogen reductions.
08 · Category
Regulation & Standards5 stats
01
Compost product category standards under the EU fertilising products framework (Regulation (EU) 2019/1009) require declarations of conformity and performance of conformity assessment procedures before CE marking (a measurable compliance requirement)
02
The EU landfilling directive set a target that, by 2030, member states must reduce landfill of biodegradable waste (measurable policy constraint that supports organics diversion including composting)
03
ISO 21646:2021 specifies requirements and test methods for evaluating composted materials, including parameters used to determine compliance and product consistency (measurable standard framework)
04
ISO 14855-1:2019 provides standardized methods for determining the ultimate aerobic biodegradability of plastics and is commonly used by composting-relevant biodegradation assessments (measurable test framework used in product compliance)
05
Compost maturity/stability evaluation in practice often uses respirometry-based measures; a reported operational target is a decline in respiration rate to near-stable values within weeks of curing, supporting shelf-life and land-application safety
Interpretation
Regulation & Standards Interpretation
Under the Regulation & Standards angle, the growing backbone for composting is clear as Europe pushes 2030 landfill cuts for biodegradable waste while formal frameworks and standards such as EU Regulation (EU) 2019/1009 and ISO 21646:2021 increasingly require declared conformity and standardized testing of compost quality.
report visual · Breakdown
How composting performs in practice
Composting’s impact spans waste diversion share, operational targets, and measurable environmental/quality benefits.
90%
Odor mitigation via biofilters has been measured to achieve 60–90% reductions in specific volatile organic compound (VOC
10%
Composting facility design documents frequently target oxygen supply to maintain aerobic conditions; a controlled full-s
source-verifiedsciencedirect.com · pubmed.ncbi.nlm.nih.gov
Reference
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APA
Lars Eriksen. (2026, February 13). Composting Statistics. Gitnux. https://gitnux.org/composting-statistics
MLA
Lars Eriksen. "Composting Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/composting-statistics.
Chicago
Lars Eriksen. 2026. "Composting Statistics." Gitnux. https://gitnux.org/composting-statistics.
Sources & references
42 datasets cited across this report · attribution is report-level
+23 additional datasets cited (not shown individually)