Water Portal / Rainwater Harvesting / Rooftop rainwater harvesting
From Akvopedia
Where access to groundwater is limited, rainwater harvesting in underground tanks can be an effective and low-cost solution. Water stored in the rainy season can be used in the dry season and lifted from the tank with a rope pump or with a Flexi- Emas pump (see PVC pumps),which can elevate water up to 30 m.
