Engineered systems to rapidly isolate drainage networks , prevent environmental incidents, and maintain full bore performance — compliant with CIRIA C736 guidance.
It is an offence under the Water Resources Act 1991 to allow polluting matter to enter controlled waters.
Effective pollution containment requires more than flow control — it demands systems that can rapidly isolate drainage networks during emergency events. ToggleBlok® is an automated containment valve engineered to close within seconds, preventing contaminated runoff from leaving site.
Designed for new developments and retrofit applications, our systems maintain full bore hydraulic capacity while supporting compliance with environmental regulations. We work with drainage engineers and site operators across industrial, commercial, and infrastructure sectors to deliver practical, reliable solutions.
Trusted across manufacturing, logistics, and major infrastructure projects, Sandfield Penstock Solutions provides proven containment systems where performance is critical.
See how ToggleBlok® rapidly isolates drainage systems to prevent contaminated runoff leaving site during emergency events.
We support both system designers and site operators in managing pollution risk and achieving compliance.
We support drainage engineers and design consultants in specifying effective pollution containment systems that meet regulatory requirements and integrate seamlessly into new developments.
We help industrial and commercial sites safeguard operations by modelling pollution events such as spills, firewater runoff, and flooding. Our spillmapping visualises how contamination spreads through drainage systems — helping identify risks and implement effective containment solutions.
We provide engineered pollution containment systems for both new developments and existing operations — supporting designers in achieving compliance and helping operators protect their sites from environmental risk.
ToggleBlok® enables rapid, automated isolation of drainage systems, helping you meet CIRIA C736 requirements while maintaining full bore performance.
Discover our range of advanced pollution control solutions designed to protect your site, ensure compliance, and safeguard the local and wider environment.
From initial design through to operational protection, we support clients in identifying pollution risks and implementing effective containment solutions that meet current environmental standards.
See the impact of a pollution event before it happens. Visualise how spills, firewater runoff, and flood events move through your drainage system. Our spill mapping identifies potential failure points and helps define the most effective containment strategy — supporting compliance and informed decision-making.
Maintain Performance of Existing Penstock Systems. Ensure your existing penstock valves remain operational, compliant, and capable of responding when required. Our servicing and maintenance support helps identify wear, corrosion, and performance issues before they become critical failures.
Identify Risks Within Your Drainage System. Understand how your drainage network performs under real-world conditions. Our expert assessments diagnose operational issues, highlight potential pollution risks, and provide clear recommendations to improve system resilience and protect business continuity.
Trusted by leading organisations across manufacturing, logistics, and infrastructure sectors. See how our systems have been implemented across industrial, infrastructure, and commercial sites to prevent pollution incidents, support compliance, and protect operations during high-risk events.
A pollution containment valve is designed to isolate drainage systems during emergency events such as chemical spills, firewater runoff, or flooding. It prevents contaminated water from leaving site and entering controlled waters, helping businesses comply with environmental regulations.
Penstock valves are primarily designed for flow control rather than pollution containment. They may not provide the rapid, leak-tight isolation required during emergency events, which is why dedicated containment systems are increasingly specified.
Firewater containment involves capturing contaminated water used during firefighting to prevent it entering drainage systems and watercourses. It is a key requirement for industrial and high-risk sites to avoid environmental damage and regulatory penalties.
CIRIA C736 is industry guidance that outlines best practice for the design and implementation of pollution containment systems. It is widely referenced by regulators and engineers when assessing compliance and system suitability.
Automated systems such as ToggleBlok® can isolate drainage systems within seconds of activation, ensuring rapid response to pollution events and reducing the risk of environmental contamination.
Get expert advice on pollution containment systems, CIRIA C736 compliance, and protecting your site from environmental risk. Whether you’re designing a new project or reviewing an existing system, our team is here to help.
Call us on 01299 823158 or email us to discuss your requirements
