Bengaluru — apartment societies
Your society pays ₹2 lakh/month for tankers. RWH cuts that 50–80%.
Apartment societies in Bengaluru spent record amounts on tanker water in 2024 and 2025 — peaking at ₹1.5–2 L/month for a 60-flat building. Rooftop catchment + recharge wells displace 30–50% of that, every year, for the life of the system. A hybrid install pays for itself in 18–30 months at current tanker rates.
Independent — we never install. Why →
What tankers cost a Bengaluru society
Per-tanker (6,000 L typical) and per-flat-per-month averages, based on Citizen Matters Bengaluru reporting + 2024–2026 society surveys.
| Season | Per tanker | Per flat / month |
|---|---|---|
| Pre-summer (Jan–Mar) | ₹600–900 | ₹300–600 |
| Peak summer (Apr–Jun) | ₹1,500–3,000 | ₹800–1,800 |
| Crisis (drought-year) | ₹3,000–6,000 | ₹2,000–4,000 |
Reference: Citizen Matters Bengaluru — apartment RWH economics . Last verified 2026-05-12.
Enter flat count + average tanker spend. We'll model the 10-year savings.
The 60-flat reference build
A worked example for a typical Bengaluru mid-sized society. Numbers are estimates and depend on roof area, rainfall, and groundwater conditions:
Build cost (one-time)
₹3–7 lakh
Hybrid (storage + recharge), 60 flats, ~1,500 m² roof
Annual tanker savings
₹2–4 lakh
30–50% of typical society tanker spend
Payback period
18–30 months
At current tanker rates
10-year corpus impact
₹15–40 lakh
Net of build cost, conservative tanker-price assumptions
Frequent questions
How much can a society realistically displace?
Depends on roof area, occupancy, and existing groundwater. A typical 60-flat society with 1,500 m² of rooftop can harvest ~7–9 lakh L/year. That offsets 30–50% of dry-month tanker demand and gives you a 10-year savings of ₹15–40 lakh.
Will residents see a difference in their maintenance bill?
Yes. Once installed, the society's water cost stops swinging with monsoon. The capex (₹3–10L typical) amortises across all flats over 18–30 months; after that it's pure savings to the corpus.
What about existing storage tanks?
We integrate with what's already there. Most societies already have underground sumps + overhead tanks; we add the rainwater catchment, first-flush, filter, and a flow valve into the existing sump. No tear-out.
Who does the work?
We connect you to society-scale installers in Bengaluru with active references at apartments of comparable size. You pick from 2–3 quotes; we never take commission on conversion.
What about BWSSB compliance?
Properties ≥2,400 sqft (apartment buildings comfortably exceed this) must have functional RWH or face the ₹5,000 fine + 50% water-bill surcharge. A society install closes that exposure for the whole building.
Regulation reference: Karnataka RWH mandate full guide. Last verified 2026-05-12.