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This section provides an overview for rainwater utilization systems as well as their applications and principles. Also, please take a look at the list of 11 rainwater utilization system manufacturers and their company rankings. Here are the top-ranked rainwater utilization system companies as of March, 2026: 1.SA Clean Water, 2.Southland Filtration, 3.Premier Tech Ltd..
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Categories Related to Rainwater Utilization Systems
Rainwater utilization systems are designed to store and use rainwater. By storing rainwater during heavy rains and using it as needed, these systems prevent the rapid flow of water into rivers and sewers, thereby reducing flood damage. Large-scale systems require advanced planning due to varying intake locations and intended water uses.
Efficient rainwater use through these systems offers economic benefits for factories, commercial facilities, and households. Additionally, rainwater harvesting contributes to achieving the Sustainable Development Goals (SDGs), addressing water-related issues and promoting a sustainable society.
The regional benefits of installing rainwater utilization systems include potential subsidies from municipalities, with many public buildings already incorporating these systems.
These systems store rainwater to mitigate flooding from heavy rainfall. Stored rainwater can be used for non-potable purposes like domestic wastewater and toilet flushing, saving significant water in facilities with high usage. While not generally recommended for drinking or bodily contact, systems equipped with ozone or chlorine treatment can render rainwater potable.
Stored rainwater can also be used for agricultural irrigation during prolonged dry periods or for road sprinkling to utilize the evapotranspiration effect in summer. In disasters like earthquakes, these systems provide a vital emergency water source.
Typically installed by contractors, the systems can range from simple rooftop storage tanks connected to gutters, supplemented by pressurized pumps for toilet plumbing, to large underground storage tanks for more extensive applications.
Large systems often require significant storage capacity, with rainwater first filtered to remove debris before storage. Some systems are used for fire protection or rooftop gardens, with pumps connecting the stored water to facility plumbing. Disinfection equipment may be installed for hand-washing and other uses.
Regular maintenance is essential to prevent clogs from debris and mud. This includes cleaning filters, screens, and tank interiors. Maintenance frequency depends on the specific system and environmental conditions. Stagnant water can lead to bacterial growth, so it's advisable to circulate and use the stored water regularly.
While individual homeowners can usually maintain smaller systems, larger installations typically require professional contractor services. For large-scale systems, reservoirs and other large storage facilities may need specialized maintenance.
*Including some distributors, etc.
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Beijing Tidelion Science and Innovation Group Co., Ltd, established in 2003 and headquartered in Beijing, China, is a manufacturer of water control and rainwater utilization systems. The company’s product line includes plastic module combined pools, intelligent rainwater treatment machines, siphon rainwater hoppers, and PE linear drainage ditches. It also offers solutions such as rainwater collection and utilization systems, roof rainwater drainage, and a smart rainwater management system. Its marketing network covers the whole country and has expanded to more than 20 countries and regions, including Singapore, Sri Lanka, Iran, and the Maldives.
Watts was established in 1874 and is a manufacturer of water management products based in North Andover, Massachusetts, United States. The company offers various water solutions products such as automatic control valves, gas connection systems, pressure reducting valves, water quality parts, and high purity process piping systems. The products have been used for serving various industries such as healthcare, agriculture, hospitality, commercial, and municipal waterworks. The products have been created under compliance of CSA, NSF International, WQA, BSI, and AGA manufacturing standards.
Rainharvesting Systems Ltd, founded in the UK, is a supplier of rainwater tanks and filters. The company's product portfolio includes all residential tanks to large-scale industrial tanks, providing storage solutions, advanced filtration systems to ensure that the rainwater collected is clean, safe, and suitable for various applications, and submersible pumps to piping and fittings, we provide the necessary equipment to efficiently transport and utilize harvested rainwater. It also provides a customized rainwater harvesting system that aligns property layout.
Ranking as of March 2026
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | SA Clean Water |
13.6%
|
| 2 | Southland Filtration |
13.6%
|
| 3 | Premier Tech Ltd. |
9.1%
|
| 4 | RAINY |
9.1%
|
| 5 | Hydromo |
9.1%
|
| 6 | Dutypoint |
9.1%
|
| 7 | Beijing Tidelion Science and Innovation Group Co., Ltd |
9.1%
|
| 8 | Sth, Inc |
9.1%
|
| 9 | HILLSBORO PUMP SERVICE PIPE & SUPPLY INC |
4.5%
|
| 10 | Watertronics |
4.5%
|
Derivation Method
The ranking is calculated based on the click share within the rainwater utilization system page as of March 2026. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
1 | 25.0% |
|
China
|
1 | 25.0% |
|
Netherlands
|
1 | 25.0% |
|
United Kingdom
|
1 | 25.0% |
