NeerTarka is a decision-support platform that transforms rainwater harvesting planning from guesswork to data-driven strategy. The system guides users from site assessment ('Where can we harvest?') through intervention design ('What should we build here?'), serving homeowners, municipalities, and water practitioners. It delivers measurable social impact via improved water-resilience and recharge planning, economic benefits through right-sized systems and cost comparison, and environmental gains including rainwater capture, groundwater replenishment, and runoff reduction. Urban planners and water engineers can fork and customize this infographic on Diagrams.so to communicate NeerTarka's value proposition to stakeholders. The platform exemplifies how accessible GUIs and integrated impact metrics drive adoption of sustainable water infrastructure.