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Combined Attenuation & Rainwater Harvesting

Rainwater harvesting and attenuationThe Stormsaver Combined Rainwater Harvesting and Attenuation Tank is a single piece, GRP, Pre-fabricated system, that is delivered to site for simple and rapid installation. This solution allows for efficient rainwater harvesting to a range of appliances, but also acts as flood management by attenuating excess water before allowing it to enter the storm drain system or local watercourse at a controlled flow rate. Half the GRP tank is used for storing rainwater for use in the building, whilst remaining excess water is diverted to drain in times of heavy rainfall at a controlled flow rate.

Both the attenuation tank and flow controls can be sized to suit your requirements. The tanks come in a range of sizes starting from 1500L up to 300,000L. This is a modular design and can also be joined together using interconnecting pipework to create larger attenuation system.


Please download our datasheet below for more details.

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If you have any questions or are not sure which product is best suited to you, please contact us today or call our estimating team on 01636 815254 or



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Simply fill in the form below and press send and we will get back to you shortly regarding your enquiry.

Get an idea of how much a rainwater harvesting system will cost your business or home

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"We have been using Stormsaver systems for the last 5-6 years on all our commercial projects and it is always a pleasure to work with them, very professional, always helpful, and deliver their promises every time. Big thank you to all members of the Stormsaver team.

Excellent Job!!!"

Testimonial - Mechanical and Engineering Contractor

“Stormsaver has helped us to upgrade the existing rainwater harvesting system. We desperately needed support and within one month they had attended site, carried out a survey, manufactured the new control panel, and installed and commissioned the system. Together the team at Stormsaver responded quickly, understood our requirements, and worked to ensure that we had the best solution. Their knowledge and expertise have resulted in us now having a fully functional, efficient rainwater harvesting system and we would highly recommend that other clients who need their existing rainwater system upgrading, contact Stormsaver for support.”

Facilities and SHE Manager - Further Education College

“What an absolute credit to our team your engineer was. I was most impressed with the way he worked and couldn’t have asked for a better or more helpful commissioning engineer. I will certainly be recommending Stormsaver to my colleagues” 

Site Manager - Dyer and Butler