Water efficiency (corporate Calculators tab)

fresh water kL/yr = kL/day × 300; intensity = kL/day × 1000 ÷ units/day; above band % = (intensity − good) ÷ good × 100; cost = kL/yr × tariff

Only wet processing has a benchmark. Cut-and-sew is utility water with no band.

• kL/day
  Fresh water drawn per working day (prefilled from metered months) · kL
  Your data
• units/day
  Garments or kg fabric per day
  Your data
• days
  Operating days per year · daysIndia: 300 days per year · Ploxi engineering assumptionpending review
  Factor table
• good washing
  Good-practice band, garment + denim washing · L / garmentIndia: 25 L per garment · Ploxi engineering assumptionpending review
  Factor table
• good dyeing
  Good-practice band, weaving & dyeing · L / kg fabricIndia: 90 L per kg fabric · Ploxi engineering assumptionpending review
  Factor table
• kg/garment
  Fabric per garment · kgIndia: 0.25 kg per garment · Ploxi engineering assumptionpending review
  Factor table
• tariff
  Water tariff (fallback ₹95/kL) · per kLIndia: 95 INR per kL · Ploxi declared basis: intake + effluent tariff blended (kept). Research found MIDC water-only rates ₹17.75–26/kL (Circular 08/2025), excluding CETP/effluent charges.pending review
  Factor table

fixtures 10% of fresh water; rainwater = roof m² × rain m × 0.6 × 0.8; ETP recycling = (0.7 − recycled share) × fresh × 0.75; sub-metering 6% of fresh; condensate = steam t/day × 300 × (0.85 − return share) × 0.9; compressed air = 250 kW × 6,000 h × 20%

Each opportunity has fixed rules of thumb for the water it saves and its capex.

• fixtures saving
  Fixtures + reuse saving, share of fresh waterIndia: 0.1 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• fixtures ref
  Reference site size for fixtures capex · kL / yrIndia: 55,200 kL per year · Ploxi engineering assumptionpending review
  Factor table
• fixtures min
  Fixtures capex floor · INRIndia: 120,000 INR · Ploxi declared costpending review
  Factor table
• fixtures capex
  Fixtures capex at the reference size · INRIndia: 170,000 INR · Ploxi declared costpending review
  Factor table
• run-off
  Share of roof run-off collectedIndia: 0.6 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• storage
  Storage / recharge efficiencyIndia: 0.8 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• rain capex
  Rainwater harvesting capex · INR per kL·yrIndia: 180 INR per kL per year · Ploxi declared costpending review
  Factor table
• ETP target
  Recycle-to target shareIndia: 0.7 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• recoverable
  Share of the gap physically recoverableIndia: 0.75 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• RO energy
  UF-RO pumping energy · kWh / kLIndia: 4 kWh per kL · Ploxi engineering assumptionpending review
  Factor table
• ETP capex
  ETP recycling capacity · INR per kL·yrIndia: 200 INR per kL per year · Ploxi declared costpending review
  Factor table
• compressor
  Compressor load assumed · kWIndia: 250 kW · Ploxi engineering assumptionpending review
  Factor table
• hours
  Run hours per year · h / yrIndia: 6,000 hours per year · Ploxi engineering assumptionpending review
  Factor table
• air saving
  Share saved by leak repair + VFDIndia: 0.2 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• air capex
  Compressed-air capex · INR per MWh·yrIndia: 15,000 INR per MWh per year · Ploxi declared costpending review
  Factor table
• sub-metering saving
  Sub-metering saving, share of fresh waterIndia: 0.06 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• sub-metering capex
  Sub-metering capex · INRIndia: 1,500,000 INR · Ploxi declared costpending review
  Factor table
• return target
  Condensate return targetIndia: 0.85 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• recovery
  Share of the gap recoveredIndia: 0.9 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• condensate value
  Fuel value of returned condensate · INR per kLIndia: 250 INR per kL · Ploxi declared costpending review
  Factor table
• condensate min
  Condensate capex floor · INRIndia: 800,000 INR · Ploxi declared costpending review
  Factor table
• capex years
  Capex as years of savings · yearsIndia: 10 years · Ploxi engineering assumptionpending review
  Factor table

priority = w_water × min(60, 40 + water share × 100) + w_pay × max(0, min(40, 45 − payback × 12)); weights 0.6/0.4 if above band or water-stressed, else 0.4/0.6

Water-led ranking only when the site is above its band or in a stressed basin; otherwise payback leads.