1. What is this item?

This infrastructure is designed to manage and treat grey water—water that’s been used for activities like washing, bathing, or processing (but not contaminated by toilets). It involves:

• Collection Systems: Piping and channels to gather the water

• Treatment Systems: Filters, sedimentation tanks, or biological treatment (e.g., bio-filters, constructed wetlands)

• Storage Systems: Storage tanks or ponds for treated grey water, ready for reuse (irrigation, cooling, cleaning)

2. How is the Quantity Estimated?

• Water Usage: Average water usage per person (e.g., 50-100 L/day for washing, bathing, etc.)

• Farm Size: Adjust for farm personnel, guest facilities, processing plant water needs

• Treatment Requirements: Size of the treatment unit based on water volume (e.g., 1,000-2,000 L/day capacity for small-scale farms)

3. Cost Components

• Collection System:

o Piping: PVC or HDPE pipes for water collection

o Gutters: To collect water from wash areas, kitchens, bathrooms

• Treatment System:

o Sedimentation Tanks: To settle solids

o Bio-Filters: Constructed wetlands or sand filters for organic matter removal

o UV or Chlorine Treatment: For pathogen elimination

• Storage System:

o Storage Tanks: RCC, HDPE, or concrete tanks for treated grey water

o Storage Ponds: Lined with geotextile or clay

• Installation Labor: Excavation, pipe laying, system setup

• Pump & Distribution: For transporting treated water to reuse points

• Testing & Monitoring: Regular water quality testing for reusability

4. Going Rates & Per Unit Cost

• Collection Piping: ₹30–₹60 per meter (depending on pipe diameter)

• Treatment Systems:

o Sedimentation Tank: ₹20,000–₹50,000 (based on volume)

o Bio-Filters: ₹10,000–₹25,000

o UV or Chlorine Treatment: ₹5,000–₹20,000 (based on flow capacity)

• Storage Tanks:

o Small Tanks (1,000–5,000 L): ₹5,000–₹15,000

o Large Tanks (>10,000 L): ₹25,000–₹50,000

• Storage Ponds: ₹20,000–₹1,00,000 (based on pond area and lining materials)

• Installation: ₹10–₹20 per meter for piping; ₹5,000–₹20,000 for system setup

• Testing Kits: ₹2,000–₹10,000 (for regular testing)

Example: For a 1,000-person farm with daily grey water usage of 50 L/person (50,000 L/day):

• Collection System: 500 meters of piping (₹30 × 500) = ₹15,000

• Sedimentation + Bio-Filters: ₹60,000

• UV Treatment: ₹15,000

• Storage Tank: ₹25,000 for 20,000 L capacity

Total Estimated Cost for Grey Water Infrastructure ≈ ₹1,15,000–₹1,25,000

Benefits of Grey Water Management

• Conservation of Fresh Water: Reduces dependency on potable water for irrigation, cleaning, and other non-consumptive uses

• Wastewater Reuse: Enables water recycling for irrigation, cooling systems, and cleaning

• Environmental Impact: Reduces runoff, erosion, and water pollution

• Cost Efficiency: In the long run, managing grey water reduces water procurement costs

By managing grey water efficiently, you reduce operational costs and ensure a sustainable farm development model that’s eco-friendly and compliant with growing regulations.