Rainwater Harvesting is not a plumbing job—it is a regulated engineering system that must perform on ground and pass statutory inspection.
At D P Associates, we follow a structured, Delhi Jal Board–approved methodology that eliminates guesswork, prevents failures, and guarantees compliance.
Our systems are engineered to recharge groundwater effectively and clear Delhi Jal Board inspection without last-minute corrections or risk of rejection.
Rooftop Catchment Area Calculation
We calculate the effective rooftop area to determine expected rainwater yield, required pit or tank capacity, and the number of recharge structures needed. Systems are scientifically sized—no overdesign, no underperformance.
Detailed Site Survey & Pit Location Finalisation
Our engineers assess existing stormwater lines, down-take pipes, soil strata, percolation capacity, space constraints, and underground utilities. Correct pit placement prevents overflow, choking, and zero recharge.
Engineering Design of Recharge Pit / Tank
Each site receives a bespoke engineering design including pit or tank dimensions, proper filter media layering, inlet, outlet and overflow planning, and inspection chambers. No standard drawings are reused.
Design Approval from Delhi Jal Board
Designs are submitted for technical approval, and construction begins only after approval is granted—eliminating inspection rejection risk.
Controlled Construction Execution
Execution strictly follows Delhi Jal Board–approved drawings, correct materials, specifications, and engineering best practices. No shortcuts. No plumber-based work.
Delhi Jal Board Adequacy Certificate Application
We manage documentation, online and offline submissions, and department coordination. Clients remain stress-free while we handle the process end-to-end.
Delhi Jal Board Technical Site Inspection
Delhi Jal Board engineers verify construction against approved design, filter media, pit depth, and functional connectivity. Our systems are built to clear inspection in the first visit.
Adequacy Certificate Handover
After inspection, the Delhi Jal Board Adequacy Certificate is issued and handed over. Compliance complete—no penalties, no future notices.
We follow an engineering-first approach, align with Delhi Jal Board (DJB) norms from day one, build inspection-proof systems, and offer single-point responsibility from calculation to certificate.
Our proven track record includes systems that recharge groundwater reliably and sustain performance year after year.
Is your existing Rainwater Harvesting System actually working—or just avoiding penalties? Let our engineers review your site and design a Delhi Jal Board compliant, inspection-ready system that truly works.