Interactive Planner · 2026
Treated Water Reuse Planner
Allocate a building's treated water across the applications that pay it back — flushing, landscape, cooling and washing — and see what is left for groundwater recharge, all in KLD (kilolitres per day).
Where your 150 KLD of treated water goes each day
Your reuse allocation
The daily volume of treated water your STP can supply for non-potable use.
Your treated water reuse plan
150 KLD split across five destinations — reuse first, recharge the surplus.
Sending treated water to flushing, landscape and cooling first displaces the freshwater you would otherwise buy — usually the fastest-paying use of every kilolitre your STP recovers.
Whatever is left after reuse — 15 KLD here — is best sent to groundwater recharge or compliant discharge rather than wasted.
How this is calculated
- Each reuse (KLD) = available × its share ÷ 100. Flushing = 150 × 35% = 52.5 KLD.
- Allocated to reuse = sum of the four shares = 90%.
- Groundwater recharge = available × max(0, 100 − allocated) ÷ 100 = 150 × 10% = 15 KLD.
Concept-stage planning only. Actual reuse depends on treated-water quality, storage, dual-plumbing and local reuse norms — confirm demand profiles with a qualified consultant before committing pipework.
Related Guides — Deep-dive reading
STP for IT Parks & Campuses: Central-Plant Design, Reuse & Redundancy Guide
How to plan a campus-scale sewage treatment plant for a multi-building IT park in India — the daytime flow pattern, the right technology, sizing for a central plant, and a reuse network feeding landscape, flushing and cooling towers.
Sewage Treatment PlantsCircular Water Management for Buildings & Cities: The Closed-Loop Guide
How to stop treating water as a one-way flow and design a closed loop — treat, reuse, recharge, repeat — with a sewage treatment plant at its core, for Indian buildings, campuses and cities.
Sewage Treatment PlantsSTP for Office Buildings & IT Offices: Sizing, Reuse & Design Guide
Why office STPs need lower per-person LPCD, a weekday-only flow strategy and a generous equalisation tank — plus which technology suits, how to size it, and where flushing and cooling-tower reuse pay for themselves.
Sewage Treatment PlantsRelated Tools — You may also find these useful
Rainwater + STP Integration Calculator
Combine rooftop rainwater harvesting with STP treated-water reuse to estimate the total non-potable water your building can supply in KL per year.
Water CalculatorSTP vs Septic Tank Decision Tool
Answer five yes/no questions about your site and get a clear STP-or-septic-tank recommendation, with a confidence score and the reasons driving it.
Decision ToolUV Dose Calculator
Enter UV intensity and exposure time to compute the delivered UV dose in mJ/cm² and see instantly whether it meets your reuse target, with the pass/fail margin.
STP Calculator