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VK Raviraja’s rain water harvesting solutions for the water crisis in Chennai


V K Raviraja has installed four types of rainwater harvesting systems in his house.

Product or concept

His 1000 sq. ft house is self-sufficient in terms of his day to day water requirements due to the rain water harvesting solutions put in place.

Problem being solved

Reduces dependency on metro water sources and ground water levels.

Process or technology involved

Four types of rainwater harvesting systems are set up:

  • Constructed underground sump to store rainwater.
  • Has a direct borewell recharge pit. These borewells are 120 ft deep.
  • Constructed mini recharge wells.
  • Set up 3 rainwater harvesting systems on his terrace, out of which 2 are interconnected.

All these systems are cleaned and maintained periodically.

Sustainability benefits

  • Increases the groundwater levels since the water is allowed to reach the ground through a connection of pipes.
  • Prompts and persuades others in leading a self-sufficient lifestyle.

User segments that will benefit

  • Residential Complexes
  • Municipal Corporations
  • Facility Management Companies

People or organizations involved

V K Raviraja

Innovations or USPs

  • Costs of constructing the rainwater harvesting structures are minimal – involves only masonry work.
  • All of his family’s water needs are met by the rainwater harvesting systems in place.
  • Regular maintenance has led to the total dissolved solids in the water storage units to be less than 10 mg/L compared to municipal water, that has close to 2000 mg/L.

Related engineering, science or business topics

  • Water Management and Conservation
  • Civil Engineering

Other interesting highlights

  • Also has constructed two types of biogas plants – to treat kitchen and human waste.
  • Installed a 2-kilowatt solar power plant at his house.

Residence at:



RainWater Harvesting Animated Explanation

Rainwater Harvesting System

Harvesting rain - an urban rainwater system, Bangalore, India.

Take a journey for this topic: Learn more, experience stuff, do something...

Know more about the people behind this

As Chennai Struggles For Water, This Man Has Enough For 6+ Months! : The article talks about the type of structures VK Raviraja has implemented at his home.

Make a visit to get a first-hand experience

Involve yourself/participate in activities

Purchase the product/solution

Connect with experts

Akash Ganga Trust - Rain Centre : The centre was established in 2001. Sekhar Raghavan who runs the centre provides training programs for those interested in learning about different rainwater harvesting methods.

Experiment through do-it-yourself projects

Rainwater harvesting techniques-Making a recharge pit : The video describes the process involved to make a recharge pit for rainwater harvesting structures.

Bore Well Recharge - How it is done. : Borewell recharge pit used by VK Raviraja

Rainwater Harvesting - Home System Tour : The video makes reference to the variety of systems a house can construct for harvesting the rainwater.

Learn more

Components of a Rainwater Harvesting System : This article provides information regarding the different modules present in rainwater harvesting.

Catch water where it falls: Urban rainwater harvesting : The article gives a detailed explanation on the different rainwater harvesting systems needed in an urban environment.