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Industrial Rainwater Harvesting In Kerala

Industrial rainwater harvesting is the practice of capturing and storing rainwater that falls on an industrial site for later reuse. This water can be used for a variety of purposes, such as irrigation, cooling, fire protection, and even drinking water. Industrial sites are often large, so they can have significant potential to harvest a large amount of rainwater. Rainwater harvesting can help reduce the amount of water used onsite, reduce the burden on local water resources, and provide a reliable source of water for the industrial activities.

Industrial rainwater harvesting in Kerala or collection systems are an efficient way to capture and reuse rainwater for irrigation and other uses. They provide an environmentally-friendly alternative to traditional water sources and can reduce costs associated with water bills and water treatment.

1. Introduction: What is industrial rainwater harvesting?

Water scarcity is a growing global problem. According to the United Nations, 2.2 billion people lack access to safe drinking water. Water scarcity has led to a rise in the popularity of industrial rainwater harvesting. This method of water conservation collects and stores rainwater for industrial use. Industrial rainwater harvesting has numerous benefits, including reducing water bills, conserving natural resources, and reducing the impact on the environment. In this guide, we will explore the basics of industrial rainwater harvesting, including the benefits, components, and implementation.

Rainwater harvesting is an effective way for commercial businesses to reduce their reliance on public water supplies and instead tap into a renewable source of water. By collecting and storing rainwater, businesses can reduce their water bills and help conserve natural resources.

Benefits of Industrial Rainwater Harvesting:

Water Conservation Kerala

Water Conservation:

Industrial rainwater harvesting conserves water by collecting rainwater and using it for industrial purposes. By using rainwater, industries reduce their dependency on municipal water supply, which decreases the overall demand for water.


Implementing an industrial rainwater harvesting system can help reduce water bills. The collected rainwater can be used for various purposes, including cooling towers, flushing toilets, and irrigation, which reduces the need for municipal water.

Environmentally Friendly:

By reducing the demand for municipal water, industrial rainwater harvesting reduces the burden on local water sources, which helps to protect the environment. Additionally, rainwater harvesting reduces the amount of runoff and stormwater, which can lead to soil erosion and flooding.

Easy to Implement:

Industrial rainwater harvesting systems are easy to install and maintain. These systems are modular, meaning they can be added on to existing buildings or designed into new ones.

Components of Industrial Rainwater Harvesting:

Collection System:

The collection system includes gutters, downspouts, and piping that directs rainwater to a storage tank. The collection system should be designed to accommodate the average annual rainfall in the region.

Storage Tank:

The storage tank is the heart of the rainwater harvesting system. It should be sized based on the average annual rainfall and the estimated demand for water. The tank should be constructed of a durable, food-grade material that is resistant to UV radiation and weathering.

Filtration System:

Rainwater must be filtered before use. A filtration system removes debris, sediment, and contaminants that can accumulate on the roof or in the gutters.

Pumping System:

The pumping system is used to transport the collected rainwater to the point of use. The pumping system should be designed to accommodate the demand for water and the size of the storage tank.

Implementation of Industrial Rainwater Harvesting:

Site Assessment:

Before implementing an industrial rainwater harvesting system, a site assessment must be performed. This assessment includes evaluating the existing roof and gutter system, determining the appropriate size of the storage tank, and identifying the location of the collection system.

Design and Planning:

Once the site assessment is complete, the system design and planning can begin. The design should take into account the average annual rainfall in the region, the demand for water, and the local regulations.


After the design is complete, the installation process can begin. Installation includes installing the collection system, storage tank, filtration system, and pumping system.


Regular maintenance is necessary to ensure the rainwater harvesting system operates efficiently. Maintenance includes cleaning the gutters and filtration system, checking the tank for leaks, and ensuring the pumping system is functioning correctly.

Ongoing Maintenance for a Rainwater Harvesting System: Tips for keeping your system running smoothly.

Rainwater harvesting is becoming increasingly popular among homeowners. It is an environmentally friendly way of collecting and using rainwater for various purposes instead of relying solely on municipal water. Additionally, installing a rainwater harvesting system can be beneficial in areas that experience water shortages or drought. However, like any other system, rainwater harvesting systems require ongoing maintenance to ensure they remain in good working order.

Why Rainwater Harvesting System Maintenance is Important?

Rainwater harvesting systems are designed to collect and store rainwater for use in the home. As such, it is important to keep them well-maintained in order to ensure they are functioning properly and providing the highest quality water. Regular maintenance can also help extend the life of the system, saving money in the long run. Additionally, regular maintenance can help to identify potential problems before they become serious. For example, if a filter becomes clogged, it can cause a decrease in water pressure, which can lead to a decrease in water quality. Regular inspection and cleaning can help to prevent this from happening.

Regular Inspection and Cleaning

The first step in maintaining a rainwater harvesting system is to regularly inspect and clean the components. This should be done at least once a year, but more often if the system is in an area with high levels of dust or debris. The inspection should include checking the filters, hoses, and pipes for any signs of wear or damage. If any of these components are damaged, they should be replaced immediately. Additionally, the filters should be checked for any signs of clogging or blockage. Once the system has been inspected, it is important to clean all components. This includes the filters, hoses, and pipes. It is important to use a mild cleaning solution that is safe for use with rainwater harvesting systems.

Testing the Water

Once the system has been inspected and cleaned, it is important to test the water to ensure it is of the highest quality. Testing should be done at least once a year, but more often if the system is in an area with a high risk of contamination. Testing should include checking for bacteria, heavy metals, and other contaminants. It is also important to check the pH levels of the water. If any of these tests show the presence of contaminants, the system should be cleaned and disinfected.

Maintenance Tips

In addition to regular inspection and cleaning, there are a few other tips that can help to keep a rainwater harvesting system in good working order.

  • Make sure the collection area is free from debris, such as leaves and twigs, which can clog the filters.
  • Check the gutters and downspouts for signs of wear or damage. • Ensure the pipes and hoses are securely connected and sealed.
  • Clean the filters regularly.
  • Keep the storage tank clean and free from debris.


Rainwater harvesting systems require regular maintenance to ensure they are functioning properly and providing the highest quality water. This includes regular inspection, cleaning, and testing of the components. Additionally, it is important to keep the collection area free from debris and to check the gutters and downspouts for signs of wear or damage. Adhering to these maintenance tips can help to extend the life of the system and ensure it is providing the highest quality water. 


Q1. Is industrial rainwater harvesting cost-effective?

A1. Yes, implementing an industrial rainwater harvesting system can help reduce water bills and is a cost-effective solution for conserving water.

Q2. What is the storage tank made of?

A2. The storage tank should be constructed of a durable, food-grade material that is resistant to UV radiation and weathering.