Top 5 Leading Rainwater Harvesting Companies in the Europe

The Europe rainwater harvesting market size reached a value of more than USD 218.34 million in 2024. The market is projected to grow at a CAGR of 3.9% in the forecast period of 2024-2034 to reach USD 308.09 million by 2034. As per the analysis by Expert Market Research, the market is expected to be driven by the renovation wave in Europe and expanding demand for green roofing.

The increasing adoption of a sustainable lifestyle and the increasing efforts undertaken on the residential level to reduce ecological footprint are augmenting the implementation of rainwater harvesting systems. To expand the adoption of green buildings, by 2030, 35 million buildings could be renovated in Europe, expanding the demand for rainwater harvesting systems.

Rainwater harvesting aids in maintaining healthy soil, reducing carbon footprint, restoring the hydrologic cycle, and recharge groundwater, which may bolster the Europe rainwater harvesting market growth. The heightened interest in green roof systems in European countries such as Germany, Switzerland, and Scandinavia to capture and process rainwater on roofs while reducing water damage is likely to propel the growth of the market. 

The surging water demands across industry verticals, including agriculture and manufacturing industries, are expected to bolster the adoption of rainwater harvesting solutions in the forecast years. In 2022, the European manufacturing sector recorded a 0.4% growth compared to 2021.

In July 2023, a Dutch-Spanish consortium received EUR 3,000,000 to scale up rainwater reuse in European cities. The EU funding instrument for the environment and climate action, LIFE, funded the project. Two pilot sites for this project include Alphen aan de Rijn (the Netherlands) and Madrid (Spain), in which approximately 10 million litres of drinking water can be saved every year.

Figure: Residential Building Permits for European Union, 2018-2022

Top 5 Rainwater Harvesting Companies in Europe

1. Kingspan Group

Kingspan is the global leader in high-performance insulation and building envelope solutions. The company focuses on energy efficiency and environmental responsibility, offering innovative solutions for commercial, residential, and industrial applications. Its high-performance insulated panel systems enable low energy and low carbon buildings with a range of insulation cores, from A-class mineral fibre to flagship QuadCore technology. 

2. Otto Graf GmbH

Graf is renowned for its specialised manufacturing of high-quality plastic products. The company is known for its innovative solutions, including wastewater treatment, rainwater treatment, stormwater management, drinking water storage in the residential and industrial sectors. The company focuses on providing efficient and sustainable products while adhering to strict quality standards.

3. Wisy AG

The company specialises in developing advanced products that enhance water conservation and efficiency in residential and industrial sectors. It produces products related to rainwater harvesting systems, including filters, pumps, cisterns, and barrels using unique filter technology. 

4. System UVEX Ltd

UVEX offers an engineering solution to meet the challenge of maintaining water quality in commercial buildings. The company is specialised in offering UV based water management systems with a broad range of other products and services. The company is known for its cutting-edge technologies, ensuring products meet stringent safety requirements globally to ensure better environmental performance.

5. Boxall Ward Limited

Boxall Ward Sussex specialises in the installation and servicing of private off-mains drainage, including sewage treatment plants and septic tanks. Their work spans various sectors, including residential, commercial, and industrial developments, delivering innovative and sustainable solutions that meet clients' specific needs and ensuring high-quality standards and compliance with regulatory requirements.