Resources & Guides

While there's no strict minimum, a roof area of at least 30 square meters is recommended for meaningful water collection. However, even smaller roofs can contribute to groundwater recharge through proper recharge structures.

Costs vary based on roof area, storage capacity, and local conditions. Typically, a basic system for a 100 sq.m roof costs between ₹50,000 to ₹1,50,000, with payback periods of 3-7 years depending on water costs in your area.

Rainwater can be made safe for drinking with proper filtration and treatment. However, it's commonly used for non-potable purposes like gardening, toilet flushing, and groundwater recharge. For drinking purposes, additional purification systems are recommended.

Regular maintenance includes cleaning gutters and filters, checking for leaks, removing debris from storage tanks, and ensuring proper functioning of first flush diverters. Most systems require monthly inspections and annual deep cleaning.

Yes, apartment buildings are excellent candidates for rainwater harvesting due to large roof areas. Community-based systems can be more cost-effective and provide greater water collection capacity. Building association approval and coordination are typically required.