What works in Kolkata
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Quality scores are 0–100 rubric scores; “strong evidence” reflects study design; adoptions count documented replications elsewhere. Know more
Evidence snapshot for Kolkata
East Kolkata Wetlands treats approximately 910 million litres of the city's sewage daily through sewage-fed fisheries and supplies roughly a third of Kolkata's fish demand, sustaining around 50,000 livelihoods. The same system produces 10,000–11,000 tonnes of fish annually and 150 tonnes of vegetables daily. However, the protected wetland area has shrunk from approximately 65 km² to 41 km² over three decades due to illegal encroachment and landfilling, and peer-reviewed sampling has documented elevated heavy-metal levels (arsenic, mercury, cadmium) in fish, water and sediment, raising food-safety concerns.
Drawn from: East Kolkata Wetlands: Sewage-Fed Fisheries Treating Kolkata's Wastewater · Kanyashree Prakalpa — West Bengal's Conditional Cash Transfer to Delay Child Marriage (Contested Evidence) · East Kolkata Wetlands — Sewage-Fed Aquaculture as Natural Wastewater Treatment
Generated from this place's cited practices only. Always check the linked sources.
Strengths & weaknesses vs peers
Strengths
Water & soil — retention, infiltration, erosion control +52 pts 100 here · 48 average
Impact on gender equality +30 pts 100 here · 70 average
Curator validation +27 pts 100 here · 73 average
Sustainability +22 pts 100 here · 78 average
Evaluated outcomes +22 pts 100 here · 78 average
Weaknesses
Carbon — sequestration / storage, evidenced -10 pts 17 here · 27 average
Efficiency -32 pts 0 here · 32 average
Effectiveness -66 pts 0 here · 66 average
Achievement / evidence -87 pts 0 here · 87 average
Gender-mainstreaming embedding -89 pts 0 here · 89 average
Score profile vs peers
Coloured bar: Kolkata. Grey bar: peer average across the corpus. Both on a common 0–100 scale.
Points compare this place's average on each dimension with the average across all evaluated places, on a common 0–100 scale. Know more
Top good practices here
East Kolkata Wetlands: Sewage-Fed Fisheries Treating Kolkata's Wastewater · 53
East Kolkata Wetlands — Sewage-Fed Aquaculture as Natural Wastewater Treatment · 40
Each number is the practice's overall 0–100 quality score against its catalogue's rubric. Know more
Recommended to adopt or replicate
Transferable practices from elsewhere that address this place's gaps.
Ciudad Mujer — El Salvador's Integrated Women's Services Programme · fit 100/100
- Rated highly transferable
- Backed by strong evidence
- Addresses this place's weak dimensions
Already adopted in 3 other places
SASA! Community Mobilisation Programme against Intimate Partner Violence — Uganda · fit 100/100
- Rated highly transferable
- Backed by strong evidence
- Addresses this place's weak dimensions
Already adopted in 4 other places
Rwanda's Land Tenure Regularization Programme — Titling Land in Women's Names · fit 90/100
- Rated highly transferable
- Backed by strong evidence
- Addresses this place's weak dimensions
- Rated highly transferable
- Backed by strong evidence
- Addresses this place's weak dimensions
Already adopted in 6 other places
Abolition of Chhaupadi — Ending Menstrual Exile Huts in Nepal's Far- and Mid-Western Districts · fit 82/100
- Rated highly transferable
- Addresses this place's weak dimensions
Guyana's One-Third Gender Candidate Quota — Two Decades of Sustained Representation · fit 82/100
- Rated highly transferable
- Addresses this place's weak dimensions
Serbia's 40% Electoral Gender Quota — From One-in-Three to Near-Parity Party Lists (2020-2025) · fit 82/100
- Rated highly transferable
- Addresses this place's weak dimensions
Bogotá's Care Blocks (Manzanas del Cuidado) · fit 82/100
- Rated highly transferable
- Addresses this place's weak dimensions
Fit estimates how well a practice matches this place, 0 (poor) to 100 (excellent); the list is ordered to favour practices that address this place's gaps. Know more