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The only Rainwater Harvesting System supplier you will ever need

Rainwater Harvesting Specification Tool

You asked for a standard rainwater harvesting specification to add to your documents.... Stormsaver have given you better than that!

We have created a unique, online specification tool for consultants, public health engineers and architects. Or if you are a contractor working on a Design and Build Project, our clever programme can build you a bespoke specification in just 3 minutes. 

Once you have completed the information we need to be able to size the system, our unique sizing system will provide you with the correct specification for your needs, complete with tank capacities, the correct controls and pumping requirements, data sheets and written documents for you to include in your specification.

Not only will you save HOURS of time, you will have the peace of mind that, provided the information inputted is correct, then your specification should be correct.

Once completed, our team will recieve a copy of the specification you have created and we would always advise you to call to run through this with us as each building has it's own needs.

Our Rainwater Harvesting Specification Tool can be accessed HERE.

Give it a try today and let us know how you get on. If you have any feedback it is always welcome.


“We installed the Stormsaver domestic rainwater harvesting system 8 years ago. The savings on our mains water consumption have been amazing. We are a 4 person household, with 2 kids so lots of baths and clothes washing! We use around 56m3 of mains water a year the same as an average single person household without rainwater harvesting.  Our systems provides rainwater for toilets, laundry and irrigation and has reduced our water bill over £200 a year. I specialise in designing and building low energy housing and it is important that I not only research the best available products, but actual experience using them. The Stormsaver system has been simple to install and maintain with very good after market care, I will be using their product again.”

Charlie Luxton - Architect and TV Presenter

The Leader In Rainwater Harvesting Systems