Our Prototype

Real results from real testing. See our gravity-powered purification system in action.

BioVara 4-Stage Gravity Filtration Prototype with Sand, Gravel, and Biochar Media

BioVara 4-Stage Gravity Filtration Prototype

Sequential filtration through gravel, sand, biochar, and natural media for complete water purification

Stage 1 Gravel
Stage 2 Biosand
Stage 3 Biochar
Stage 4 Storage
Specifications

Prototype Details

Configuration

4-Stage System

Gravel → Biosand → Biochar → Storage

Power Source

Gravity Only

No electricity, fuel, or chemicals

Capacity

300 L/day

Serves 50+ people at scale deployment

Unit Cost

$50-100 USD

Locally manufacturable materials

Lab Results

Validated Performance

Contaminant Removal

Bacteria
99%
Protozoa
99%
Turbidity
95%
Chemicals
85%

Environmental Impact

460
kg CO₂e saved per year

Compared to boiling water for purification

Flow Performance

Initial Flow Rate 0.8 L/min
After Seasoning 0.5 L/min
Daily Output 300 L
Components

What's Inside

HDPE Barrel

Recycled food-grade container

~$15

Gravel

Locally sourced, washed

~$5

Sand

Fine grain for biosand layer

~$5

Biochar

Activated charcoal from local sources

~$20

Neem Leaves

Natural antimicrobial agent

~$5

Fittings

PVC pipes and valves

~$10
Total Estimated Cost: ~$60 USD
Visual Results

Before & After

Before

Contaminated source water

→

After

Purified, safe drinking water

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