Schools

Story & Trivia

This river flows through three countries – born in Tibet, flowing through India and then on to Bangladesh. It has many names - Tsangpo in Tibet, Lohit or Brahmaputra in India and Jamuna (not to be confused with Yamuna of India) in Bangladesh.

The Mystical Tsangpo

Story & Trivia

The Ganga River is extensively mentioned in the Vedas, Puranas and the epics Ramayana and Mahabharatha.

Ganga and King Bali

Story & Trivia

A school located in Bangalore, has a strength of around 1500 students from Kindergarten to Std. XII. Water consumption in the school is primarily in the toilets. Gardening forms a small percentage and the use for drinking is minimal. However, one set of drinking water fountains is provided for the students. The layout plan is shown in Figure

Rainwater is considered a very pure form of water but it dissolves a number of impurities as it courses down the atmosphere and along catchments.  Most contamination of rainwater occurs after contact with the catchment surface (roof or ground) and during subsequent delivery and storage.

Delivery pipelines convey water from the storage tank to points of use. Ultra violet treated PVC pipes or GI pipes are normally used. The water can either be pumped or flow by gravity depending on where the tank and end-use points are situated.

Installation of delivery pipelines

Storage tanks are the most expensive part of a rainwater harvesting systems, so due consideration must be given to its design and construction. The size of the storage tank depends on the amount of rainfall that can be harvested, the demand, aesthetics and budget.

It is preferable to filter the rainwater before storing it. If leaves and other organic material enter the storage tank, they decompose and support bacterial growth in the tank. Dirt and other debris, if not filtered out, can cause blocks in the plumbing system when the stored rainwater is used.

Gutters are pipes around the edge of the roof (usually sloped roofs) that collect and transport rainwater from the roof. Downtake pipes are cylindrical pipes that transport the water down, directly from the roof or from the gutters, until the storage tank.

Catchment types
Roof catchments: The rooftop is usually the most common catchment surface and can be flat or sloping.