Reviving Nepal's Water, the Way Ancestors Did — with Living Technology
AquaSai builds botanical water parks that clean wastewater using local plants — owned and run by the communities they serve.
KathmanduSelf-Sustaining water upcycling
The Challenge
Our sacred rivers have become open drains.
In the Kathmandu Valley, decades of unplanned growth have overwhelmed sanitation. Untreated sewage flows straight into the Bagmati — the river millions hold holy. Conventional treatment plants are costly, power-hungry, chemical-heavy, and so ugly that communities hide them away.
90%+
Valley sewage reaches rivers untreated
High
Energy & chemical cost of conventional plants
Lost
Irrigation, fishing & cultural use of water
A riverside settlement living beside a polluted river — a daily reality across Nepal.
Nepal Already Solved This — Centuries Ago
Five components. One continuous system.
Long before pumps and chemicals, the Newar civilisation built a complete water network across the valley — moving, storing, filtering and delivering water through the ground itself. AquaSai is this same wisdom, rebuilt for today.
1
Rajkulo
राजकुलो
Hill-to-city canal network
›
2
Recharge Pokhari
पोखरी
Detention & percolation basins
›
3
Shallow Aquifer
भूजल
The living groundwater layer
›
4
Hiti
हिटी
The terminal stone spout
›
5
Flood-control Pokhari
पोखरी
Downstream retention basins
Surface flow → percolation → groundwater flow → clean spout. Nature did the treatment. We forgot the lesson.
The Bridge
We didn't invent this. We made it living again.
AquaSai's Multi-Stage Recirculating Wetland (MSR) maps directly onto Nepal's ancestral water system — only now, plants and microbes do the purifying, and every drop is engineered to a measurable standard.
Ancient Newar SystemRecharge PokhariWater detained & allowed to percolate
→
AquaSai MSRPlanted Wetland BedsRoots & microbes break down pollutants
Ancient Newar SystemShallow Aquifer FlowLateral filtration through earth
Ancient Newar SystemHiti Stone SpoutClean water for the community
→
AquaSai MSRPolishing Pond + UVSafe water for irrigation & reuse
The Solution
Botanical Water Parks, powered by MSR technology
A Multi-Stage Recirculating Constructed Wetland mimics nature's own purification — phytoremediation, microbial breakdown and recirculation working together. The result isn't a facility to hide. It's a beautiful, living landscape the community is proud of.
0%
Pollutant removal
0%
Lower cost vs. conventional
Zero
Chemicals used
100%
Regenerative & nature-based
AquaSai gallery ↗A treatment park designed as a destination — not hidden infrastructure.Botanical layout — beauty and performance in one design.Isometric view of a four-stage MSR botanical water park.The final polishing pond — clear water, alive with plants.
Modular beds, bypass channels and flood-control basins keep the system working through Nepal's dry and wet seasons alike — just as the old pokharis once buffered the valley's floods.
Monsoon-resilientModular & scalableLow-energy
The Living Engine
Local plants do the heavy lifting
AquaSai selects flora native to Nepal — including species valued in Ayurvedic and traditional medicine — that purify water while creating a botanical garden worth visiting.
Flora gallery ↗Vetiver Grass — deep roots trap sediment & clarify water.Canna Lily — absorbs excess nitrogen & phosphorus.Native Polyculture — designed plant communities for Nepal.Phytoremediation — roots break down pollutants naturally.
A garden that cleans
Each species is chosen for both its purifying power and its beauty — turning treatment into a public botanical attraction.
Resource loop ↗Wetland biomass → biogas → fertiliser. The loop closes.Nutrients, water and energy reclaimed from waste.Solar integration — off-grid, renewable operation.
Our Model · Owned by the Community
Built for communities. Run by them.
This is not infrastructure that arrives and leaves. Each botanical water park belongs to the local community and is operated by local hands. AquaSai's role is to make that possible — and to step back.
Technology
Proven MSR design, plant selection, UV polishing and modular engineering tailored to each site.
Training
Hands-on programmes (MSR Master PRO) build local skills to build, plant, operate & maintain.
Coordination
We align municipalities, cooperatives, NGOs and residents around a shared, self-sustaining plan.
Monitoring
IoT sensors & dashboards track water quality — transparent to the whole community.
The outcome: durable local jobs, local ownership, and water infrastructure that keeps running long after we're gone.
Hands-on training at the wetland — knowledge that stays in the community.
Capability We Hand Over
Digital tools that teach and design
AquaSai pairs every park with open, interactive tools so local teams can plan, learn and operate independently.
A pilot designed for the Kathmandu Valley: a nature-based system that restores a sacred river while empowering the communities along it — with a strong focus on women and vulnerable groups.
Kathmandu Valley — modular sites, replicable river by river.
The Opportunity · Beyond Nepal
Nepal is the proving ground. Asia is the canvas.
What we validate here is built to travel. AquaSai's model is modular, standardised and replicable — designed so the technology and the skilled workforce created in Nepal can solve water upcycling across Asia.
Replicable Blueprint
Standardised, modular MSR parks deploy fast — site by site, city by city.
Licensable Technology
Proven MSR design plus digital tools (HYDRUS, MSR Visualizer) ready to license to partners.
Skilled Workforce
MSR Master PRO certifies operators & builders — an exportable talent pool for the region.
Recurring Value
Monitoring, maintenance & training create durable, recurring engagement.
One validated model → many rivers, many communities, many countries.
The Ripple Effect
Lasting change, community by community
0
Treated daily across projects
0
Plant species showcased
0
People served & inspired
0
CO₂ offset annually
Community impact ↗A water park as a community hub — education & pride.Co-benefit hub — biodiversity, learning, livelihoods.Koh Phangan, Thailand — protecting marine ecosystems.
More than treated water
Local jobs & new livelihoods
Safe irrigation & food security
Renewable biogas energy
Restored, celebrated public space
Higher property & cultural value
Climate resilience
How A Community Begins
From idea to a living water park
1
Assess
Survey site, water & needs
›
2
Design
Model the MSR park
›
3
Build & Train
Construct with local hands
›
4
Operate
Community runs it daily
›
5
Scale
Replicate river by river
From build to monitoring ↗A simple, modular build sequence — replicable anywhere.Sensors keep performance transparent and trusted.Real-time IoT analytics for the local operating team.
Let's Build It Together
Empower communities to own their water — again.
AquaSai provides the technology, training, coordination and monitoring. Nepal's communities provide the hands, the pride, and the future. Partner with us to bring a botanical water park to your river, your ward, your valley.
AquaSai
