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Rainwater is a valuable and underutilized natural resource. With the right infrastructure and strategy, rainwater harvesting and management can reduce pressure on freshwater sources, mitigate flood risks, and support sustainable water use for industrial, municipal, and residential applications.

Your challenges

Effectively capturing and using rainwater involves both technical and environmental challenges—especially as climate change increases rainfall intensity and variability.

Increased rainfall variability

Erratic weather patterns are leading to more intense rainfall events followed by prolonged dry spells. This makes stormwater management and rainwater harvesting more complex and critical for climate adaptation.

Flood risks in urban and industrial areas

Impermeable surfaces and aging drainage systems often lead to urban flooding, infrastructure damage, and public safety risks during heavy rains. Efficient rainwater collection systems are essential to reduce surface runoff.

Untapped potential for water reuse

Despite its abundance, rainwater remains largely underutilized. Without proper collection, storage, and treatment systems, industries and cities miss the opportunity to reuse rainwater for non-potable applications like irrigation, cooling, or cleaning.

Regulatory and environmental compliance

Environmental regulations increasingly demand sustainable water management practices, including rainwater harvesting, runoff control, and groundwater recharge. Organizations must comply with these requirements while also enhancing their environmental and ESG performance.

How can the Saur group meet your needs?

Saur supports clients in transforming rainwater from a risk into a resource. Our end-to-end solutions—from rainfall data analysis and hydraulic modeling to system design and maintenance—empower industries and municipalities to capture, store, and reuse rainwater effectively. Whether your goal is to reduce flood risk, cut water consumption, or meet regulatory targets, we tailor rainwater management strategies that align with your operational and sustainability goals.

Our solutions

From smart rainwater harvesting systems and stormwater control infrastructure to digital monitoring tools and nature-based solutions, Saur provides the expertise and innovation needed to integrate rainwater into your sustainable water management strategy.

  • Municipal
  • Wastewater

CARBOPLUS® Wastewater

  • Micropollutants
  • PFAS
  • Wastewater
CarboPlus® is a patented drinking water treatment process using suspended activated carbon to remove micropollutants.
France and worldwide
  • Municipal
  • Drinking water

Ultrafiltration

  • Drinking water
  • Micropollutants
  • PFAS
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France and worldwide

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