Citizen Training and the Urban Waste Footprint
Introduction
Waste management is a major fiscal and environmental challenge in rapidly growing cities, particularly in low- and middle-income countries. Improper waste segregation increases landfill use, raising municipal costs and methane emissions, a potent greenhouse gas. Despite widespread mandates for waste segregation at source – typically requiring citizens to separate their wet (such as food and green waste) from dry waste (such as paper and plastics) – compliance remains low in many places.
One important constraint is household capability. Waste segregation requires knowledge, well-functioning routines, and coordination with collection systems. Without practical skills, segregation policies can impose high effort costs, limiting compliance even when households are aware of environmental benefits. Training interventions that build household capability can therefore improve environmental outcomes by reducing the private cost of compliance and enabling persistent behavioural change.
Dhingra and Machin (2025) analyze a randomized control trial desinged to study the effect of training inverventions on compliance. Structured in-person training was supplied to households in Patna, India, teaching residents how to segregate waste effectively and explaining its environmental and operational benefits. The program was implemented at scale – with over 10,000 households trained – in collaboration with the municipal government and evaluated using a randomized staggered rollout across waste collection routes to enable causal identification of policy effects.
Prior to the intervention, only around 10% of households segregated their waste. Citizen training directly increased segregation by 4.5–6 percentage points among treated households. Spillover effects substantially amplified these policy impacts, increasing segregation by approximately 12 percentage points overall. Effects persisted and strengthened over time, with segregation rates rising to nearly 30% following full rollout.
Improved segregation reduced landfill waste and methane emissions, generating fiscal savings for municipal government and environmental benefits. Fiscal savings alone exceeded program costs within approximately 1.5–1.8 years, making this a rare example of a negative-cost climate policy that improves environmental outcomes while reducing public expenditures.
Pays for Itself
Net Cost
The fiscal cost of the policy consists of the one-time cost of delivering citizen training. The estimated program cost is Indian rupees (₹) 247 per household.
The policy generates fiscal savings by reducing landfill use. Improved segregation diverts biodegradable waste away from landfills, lowering disposal costs incurred by municipal government. These fiscal savings amount to approximately ₹137–₹164 per household annually.
Because program costs are incurred once while fiscal savings recur annually, fiscal savings exceed program costs within approximately 1.5–1.8 years. Over a five-year horizon, cumulative fiscal savings amount to ₹685–₹820 per household, exceeding program costs by ₹438–₹573 per household.
This implies that the policy generates negative net fiscal cost over the medium term.
These estimates are conservative because they exclude additional fiscal benefits arising from persistence of behavioural change beyond five years.
Willingness to Pay
The policy generates significant economic benefits through both fiscal savings and environmental improvements.
Improved waste segregation reduces methane emissions from landfills. The intervention reduced emissions by approximately 26.5%, corresponding to a reduction of approximately 73 kg of CO₂-equivalent emissions per household annually. Valuing emissions reductions using standard market and social cost of carbon estimates yields environmental benefits of approximately ₹253–₹1,753 per household annually.
In addition to environmental benefits, the policy generates fiscal savings of ₹137–₹312 per household annually. These fiscal savings reflect real resource savings and contribute to total willingness to pay. The central value adds these landfill cost savings to the market value of environmental benefits from the training.
MVPF Summary
The policy generates net fiscal savings for government. Training costs are approximately ₹247 per household as a one-time expense. Fiscal savings from reduced landfill use amount to ₹137–₹164 per household annually, implying that fiscal savings exceed program costs within approximately 1.5–1.8 years.
Because the policy generates net fiscal savings and has a positive willingness to pay, the MVPF is infinite.
In addition to fiscal savings, the policy generates substantial environmental benefits. Waste segregation reduces emissions by approximately 73 kg CO₂-equivalent per household annually. Scaling the effects linearly to urban households nationwide implies potential emissions reductions of over 6.5 million tonnes of CO₂e annually, which is roughly equivalent to avoiding the combustion of about 15 million barrels of oil.
Valuing these emissions reductions using the social cost of carbon (₹13,510 per tonne) yields climate benefits of at least ₹981 per household annually. Using a conservative market carbon price (₹3,485 per tonne) yields climate benefits of approximately ₹253 per household annually.
Separately, the paper reports a “value per dollar spent” metric defined as total benefits divided by program expenditure, that is at the high end of various policies impacting climate change.
References
Dhingra, Swati and Stephen Machin (2025). “Citizen Training and the Urban Waste Footprint.” CEP Discussion Paper 2124. https://cep.lse.ac.uk/pubs/download/dp2124.pdf
Policy Features
- Category
- Environment
- Beneficiary Type(s)
- Adults
- Average Income
- 1737
- Country of Implementation
- India
- Year of Implementation
- 2021-2022
- Empirical Method
- RCT
- Research Type
- Primary
- Peer Reviewed
- No
- MVPF Publication Link
- cep.lse.ac.uk/pubs/download/dp2124.pdf