Rainwater Harvesting for Apartment Complexes in Bangalore
BWSSB-compliant RWH design and installation for housing societies, apartment complexes and commercial buildings. Borewell recharge, storage integration and compliance documentation — with a written itemised proposal your association can approve with confidence. Systems from ₹80,000.
Why Apartment Societies Are Under Pressure on RWH
BWSSB's rainwater harvesting mandate covers every plot of 1,200 sq ft and above — which means every apartment complex in Bangalore, without exception. Societies without a functioning, compliant system face monthly penalties added directly to the water bill. At apartment scale, with dozens of connections, that penalty compounds into a significant recurring cost the association has to explain at every AGM.
Beyond compliance, the economics are compelling: an apartment roof of 10,000 sq ft receives roughly 8–9 lakh litres of rain per year in Bangalore. Most societies currently pay tankers for that same water. A properly designed RWH system recovers its cost in 2–4 years through reduced tanker dependence and healthier borewells.
What We Install at Apartment & Commercial Scale
- Rooftop collection retrofit — gutter and downpipe modifications across blocks, first-flush diverters, and multi-stage filter units sized for large roof areas
- Borewell recharge structures — silt traps, percolation chambers and recharge pits feeding society borewells (see our borewell recharge service)
- Storage integration — routing filtered rainwater into existing sumps with overflow management, or dedicated storage where space allows
- BWSSB compliance documentation — system drawings, self-declaration support and certification assistance for the association's records
- Annual maintenance — pre-monsoon filter cleaning, silt trap clearance and system health check under AMC
Pricing for Apartments & Commercial Buildings (2026)
| Property Scale | Typical Scope | Price Range |
|---|---|---|
| Small complex (under 30 flats) | Rooftop collection + 1 recharge structure | ₹80,000–₹1,50,000 |
| Mid-size society (30–100 flats) | Multi-block collection + 2–3 recharge structures | ₹1,50,000–₹2,50,000 |
| Large society / commercial | Full collection + multiple recharge + storage integration | ₹2,50,000–₹4,00,000+ |
Milestone payments built for society approvals: 50% advance to mobilise materials and labour, 35% at 75% completion after association verification, 15% on final handover with compliance documentation. Your committee verifies progress before every release.
Free • Written Proposal for Your Committee
Getting BWSSB penalty notices at your society?
WhatsApp us your society name and approximate number of flats — we schedule a free site assessment and deliver a written, itemised proposal your association can table at the next committee meeting. No obligation.
💬 Request Society Proposal 📞 +91-8123083393Recent Commercial Project: Shivarama Karanth Nagar
We recently designed and delivered a commercial rainwater harvesting installation in Shivarama Karanth Nagar (North Bangalore) — a staged system combining rooftop collection with groundwater recharge, executed on our milestone payment structure with written scope at every phase. Commercial and society projects run on exactly this discipline: itemised proposal first, association sign-off at each milestone, documentation at handover.
How a Society Project Runs
- Week 0 — Site assessment (free): roof area measurement, downpipe survey, borewell condition, sump capacity, soil percolation check
- Week 1 — Written proposal: system design, itemised costs, timeline, and compliance pathway — ready for committee circulation
- Weeks 2–4 — Installation: staged block-by-block so resident water supply is never interrupted; association verifies at 75% before the second milestone
- Handover: system walkthrough with the committee, maintenance guidance, BWSSB documentation pack, and AMC option
Frequently Asked Questions
Our society already has an old RWH structure. Does it count?
Often not. Many builder-installed RWH systems from 2010–2016 are silted up, disconnected, or were token structures that never functioned. BWSSB compliance requires a working system. Our assessment tells you whether your existing structure can be revived (usually cheaper) or needs replacement.
Can the system feed our borewells directly?
Yes — borewell recharge is usually the highest-value component for societies, because it revives the borewells you already depend on. We build silt traps and filtration ahead of the casing so only clean water enters.
Who signs the contract — and who do we call later?
LoklFix is your single point of contact from proposal to handover and through the AMC. One number — +91-8123083393 — for the entire lifecycle.
Do you handle the BWSSB paperwork?
We prepare the system documentation and assist with the self-declaration and certification process. See our BWSSB self-declaration guide for how the process works.