Rain water Harvesting

The harvesting of rainwater simply involves the collection of water from surfaces on which rainfalls, and subsequently storing this water for later use, sometimes in periods of water scarcity. In today’s current climate, with rapid temperature changes, weather can go from one extreme to the other, meaning rainwater harvesting is becoming an increasingly more important way to save and reuse water during dry periods.

For underground systems, the water is then filtered and can be pumped directly to household appliances, or it can go to anoverhead tank which is usually kept for reuse. If you have an above ground system, such as a water storage tank, this is a much simpler process; rainwater will run off rooftops and through gutters and pipes into the water storage tank. Where it is then stored until needed for non-potable uses like watering plants or washing cars.

Groundwater Recharges

The irregularity in monsoon has severely affected the water availability at surface and sub-surface systems. Diminishing surface and sub-surface availability has not only decreased the water availability, but it additionally affected the ecosystem and increased disastrous situations like floods and resulting problems of stress on groundwater recharge. Groundwater recharge is a technique by which infiltrated water passes through the unsaturated region of groundwater and joins the water table. It is based upon soil type, land use land cover, geomorphology, geophysical and climate etc. Over the years, due to variations in weather pattern and overexploitation of aquifers groundwater recharge has decreased and groundwater level has reduced in the most parts of the country. This has led to severe water deficit problems in several parts of the country. This can be solved by different direct and indirect methods of groundwater recharge technology

Why is rainwater harvesting important?

As our climate continues to change and weather becomes unpredictable, it is important to take advantage of times of heavy rainfall; collecting and storing this water to use during dry periods where mains water becomes a precious resource and no longer fulfills the needs of the growing population.

As we all become more aware of our environmental impact, rainwater harvesting is becoming increasingly sought after by both the general community and the bigger commercial corporations as a way of protecting the environment and making the most of its natural resources.

Environmental factors aside, rainwater harvesting is also important for individuals to save money; capturing this free resource. As water companies continue to increase prices due to population size, water shortage and high demand, using rainwater for domestic non-potable practices is an easy way to reduce your water expenses.

Rainwater harvesting be used for many Application:

Drinking water Application:

In general rule, most rainwater which runs through a rainwater harvesting system which is not suitable for drinking or for use in the kitchen. This is because, the source of this water is likely to have come from your roof, where it may have picked up pollutants such as Atmospheric contamination, bird faeces, or other pollutants.

However, if we use a suitable filtration treatment system i.e. UF plant with UV system which kill the microorganisms, and other photogenic, than it safe for drinking.

General House Uses:

As most rainwater is classed as non-potable, it can be used for toilet flushing, floor washing, car washing and general uses i.e. washing of cloths after basic filtration process

Irrigation and gardening

Rainwater from rainwater harvesting systems can be used for irrigation and can save a lot of money in the process, with mains supply water being a big expense for a lot of growers. Rainwater has been used to grow crops and plants for centuries, so it is perfectly safe to use for this purpose.


You are able to use rainwater collecting in rainwater harvesting systems to provide drinking water for livestock, although for many it is a personal preference. Watering livestock can be expensive with many cows and larger animals consuming tens of liters of water a day, so using rainwater is a cost-effective solution to conserve water, and your water bills!

While many livestock would naturally drink rainwater and the pollutants that occur in this, it is debatable whether a UV filtration system would be needed to remove these contaminants if they naturally occur. However, it's up to the individual to decide whether the risks of possible contamination, outweigh the cost and environmental benefits.

Implementation Area:

  • School
  • Hospital
  • Mall
  • Office Complex
  • Township
  • Any corporate tower/building
  • Industries
  • Warehouses
  • Temple
  • Many more suitable place to catch Rain water