Rainwater Harvesting
At Barr + Wray, we provide fully engineered rainwater harvesting and treatment systems designed to reduce reliance on mains water supplies and support sustainable water management across a variety of commercial, municipal, industrial, and leisure applications.
Engineered Rainwater Harvesting Systems for Sustainable Water Management
While rainwater is a valuable natural resource, it typically contains contaminants such as dust, leaves, organic matter, microorganisms, and atmospheric pollutants.
To ensure safe and effective use, Barr + Wray designs bespoke treatment systems that address the specific challenges associated with collected rainwater.
Our Rainwater Treatment Process Typically Includes:
- Pre-Filtration – We supply robust leaf traps and mesh screens to remove large debris at the collection point.
- Settling or Sedimentation Tanks – Used to allow heavier particles to settle before further treatment stages.
- Media Filtration – Custom-designed sand or multimedia filters remove fine sediments and suspended solids
- Activated Carbon Filtration – Our systems incorporate high-performance carbon media to reduce odours, improve taste, and adsorb chemical pollutants
- Disinfection – To ensure microbiological safety, we offer both UV disinfection systems and automated chlorination units, suitable for high-demand or sensitive applications.
- pH Correction – Where rainwater is acidic, we implement automated dosing or neutralising filters to stabilise water chemistry.
All systems are modular and scalable, allowing us to integrate them into new developments or retrofit existing buildings. Whether for non-potable reuse (e.g., toilet flushing, irrigation, cooling towers) or more advanced potable treatment, we tailor each solution to meet site-specific requirements and local regulations.
Backed by our engineering expertise and full project lifecycle support, Barr + Wray’s rainwater systems offer sustainable, efficient, and cost-effective alternatives to traditional water supply – ideal for organisations seeking to improve environmental performance and reduce operational costs.
Process + Water Solutions
Our core services span the full spectrum of industrial water engineering.
Filtration Systems
Advanced filtration technologies tailored to specific contaminants, flow rates, and industry standards.
Pumping Solutions
High-performance pumps for fluid transfer, dosing, and pressure management across diverse applications.
Water Treatment
Design and installation of systems for clean water supply, effluent treatment, and resource recovery.
Consultancy
Expert advice on compliance, sustainability, and system optimisation to support long-term operational goals.
Need help with your water systems?
Our engineers are ready to help you scope, design, and deliver the right solution for your site.
Brewing + Distilling
Food + Beverage
Oil + Gas
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