Top 5 Rainwater Harvesting Companies in the UK

Water is a precious resource, but due to the rapidly growing environmental issues, it’s more important than ever to manage it wisely. One of the most effective ways to do this is through rainwater harvesting. This sustainable practice captures, stores and uses rainwater for different purposes, reducing our reliance on mains water and helping to protect our environment.

In this post, we’re going to introduce you to the top 5 rainwater harvesting companies in the UK, highlighting their ratings, pros, cons, company overviews, and customer reviews. These companies are leading the way in sustainable water management, offering innovative solutions to save water and money.

Each of these companies has a unique approach to rainwater harvesting, and we’ll be taking a closer look at what sets them apart, from their services and products to their commitment to sustainability and customer satisfaction.

So, if you wish to install a rainwater harvesting system or simply want to learn more about it, keep reading.

Resolute Civils

Company Overview

Resolute Civils, a part of the Resolute Engineering Group, is a leading name in stormwater management systems in Ireland and Europe. With over 60 years of combined experience in sustainable urban design, they are known for their innovative solutions. Their focus is on creating effective and environmentally friendly water management systems.

The company’s journey began with its parent company, Resolute Engineering Group, in 2020. Their vision is to revolutionise stormwater management through innovative and efficient solutions. This vision has led them to become Ireland’s largest supplier of StormTech attenuation systems.

Led by Joe Brennan, Patrick Gavin, and Ivan McFadden, the team at Resolute Civils is skilled in civil engineering and passionate about sustainable water management solutions. They work closely with StormTech to provide reliable and affordable solutions, aiming to make a positive impact in the stormwater management field.

Rating: 4.8/5


  • Exemplary customer service
  • Expertise in rainwater harvesting
  • High-quality products


  • Limited to Ireland and Europe.
  • Fewer Customer Reviews


  • “Joe & John in Resolute were very easy to deal with. What I especially liked was that they kept saying ‘no’ to me. I needed this because my initial hopes of what solar could do for me was wildly unrealistic. This way I made an informed decision with realistic expectations. I cannot recommend Resolute Engineering enough, especially to the novice.” – Shay Rohan, Roscommon
  • “Very professional, well installed and easy to work with on grants etc. The panels are working great since installation earlier this year. I would definitely recommend.” – Brian Tonge
  • “Very good professional services.” – Kevin Delany
  • “Very professional from start to finish. Great installation team.” – Brenda Mccann


Contact: (01) 485 3184

Stormsaver Ltd

Company Overview

Stormsaver Ltd, established in 2003, is a UK market leader in the design and manufacture of rainwater harvesting systems. Based in Nottinghamshire, the company develops innovative and state-of-the-art rainwater harvesting solutions to help businesses and individuals recycle rainwater, reduce utility costs, and contribute to the environment.

The company’s vision is to live in a world where mains water is used for potable use and rainwater is used for everything else. With nearly 20 years of expertise, Stormsaver is ready to help you meet your water conservation targets.

Stormsaver has received many accolades for its pioneering work in the sustainable construction sector. These include being finalists in the Innovation category of the National Business Awards in 2009, finalists in the Midlands Excellence Awards 2009, and in 2007 being selected as Nottinghamshire’s Most Innovative Business.

Rating: 4.3/5


  • Diverse range of products
  • Competitive pricing
  • Efficient installation process


  • Some reports of delayed customer support
  • Limited warranty options


  • “I recently had the pleasure of working with a company specialising in rainwater harvesting systems. From the moment I visited their website, I knew I was in good hands. The website was clean, user-friendly, and packed with useful information. The company’s dedication to sustainability was evident throughout its content. Their team was incredibly knowledgeable and responsive. They took the time to understand my needs and provide customised solutions that exceeded my expectations. The installation process was seamless, and the quality of their products was outstanding. I was particularly impressed with their after-sales service. They promptly addressed any concerns I had and made sure I was satisfied with the entire experience. Their level of professionalism and attention to detail truly set them apart. Overall, I highly recommend this company to anyone interested in rainwater harvesting systems. Their expertise, customer service, and commitment to sustainability make them an excellent choice for all your water conservation needs.” – Angela Cope.
  • “I’m so happy with the rainwater harvesting system I purchased from Stormsaver Ltd. It works flawlessly and has helped me save a significant amount of water. The team at Stormsaver Ltd was helpful and provided excellent support. I would highly recommend their products.” – Mayra Sante.

Rainwater Harvesting Ltd

Company Overview

Rainwater Harvesting Ltd, established in 2006, is an independently owned company that has quickly become one of the UK’s leading Rainwater Harvesting Specialists. The company designs and manufactures rainwater harvesting equipment, offering competitive prices and quick delivery from their large stock held at their 60,000 sq ft warehouse in Peterborough.

The company specialises in providing complete rainwater harvesting packages for customers, whether it be for a single property or a large multi-house development. They deal with many of the National Housebuilders and Housing Associations and can provide advice on the correct size and style of tank required as well as installation, and Sustainability Code credit assessments.

Rainwater Harvesting Ltd is committed to finding and developing new products and innovations in the market. They manufacture the Rain Director®, the only WRAS approved header tank solution which controls the flow of both rainwater and mains water through the house. It is probably the most energy-efficient rainwater system on the market.

Their sister company HydroForce™ Pumps Ltd manufactures the HydroForce™ Series 4 Clean water Pump which gives them a huge advantage over their competitors as they have full control of the only moving parts in a rainwater system. They have a dedicated after-sales support team and a highly efficient technical department to support and service any needs during the install period.

Rating: 4.9/5


  • Wide range of product options
  • Globally recognized company
  • Offers training and consultancy services


  • Limited local presence
  • Higher installation costs


  • “Third time ordering and as usual delivery was prompt. My only negative is the water pump only lasts 2 or 3 years at most.” – Michael Brown.
  • “Spare part kit for submersible pump delivered quickly and solved the problem.” – Graham Cheale.
  • “From start to finish customer service was excellent, quoting, the order service and delivery was all as planned and on time.” – Mark Prewett.
  • “Excellent service. Tim was amazing and he was very helpful. The parts arrived the day after. Great company and person to deal with. Thank you very much. The parts fixed it.” – Nick Carr.
  • “Incredibly good customer service. Had a problem with a pump – spoke to an engineer very quickly, they helped me work out what was wrong. Couldn’t be fixed over the phone, so they collected it the next day. Repaired it, and returned it a few days later. All covered under warranty. Highly recommend.” – Customer

The Rainwater Guy Ltd

Company Overview

The Rainwater Guy Ltd was established in 2013 by Jamie Rolph, who is the Lead Engineer and Director. With over 16 years of experience in the industry, he has worked with several businesses and clients across the Rainwater Harvesting and Wastewater treatment sector. He prides himself on ensuring all of their customers receive the best service possible as well as being on hand to provide emergency out of hours support when needed.

Leading a small team of engineers, The Rainwater Guy Ltd covers the length and breadth of the country with customers as far North as Ullapool in Scotland to the Southern tip of Cornwall. Their portfolio includes numerous local authorities, County Councils, large supermarket chains, and a range of facilities management companies to service and repair large commercial rainwater and wastewater systems.

Alongside this, they have hundreds of individual clients and domestic systems which they regularly maintain. The Rainwater Guy Ltd, a leading UK-based rainwater and wastewater harvesting company, offers sustainable water management solutions for residential and commercial clients.

Rating: 5.0/5


  • Specialises in residential rainwater systems
  • Offers personalised solutions
  • Excellent customer reviews


  • Limited commercial application options
  • Smaller team, potential delays in service


Unfortunately, there are no reviews available for The Rainwater Guy Ltd at this time.

Graf UK Ltd

Company Overview

Graf UK Ltd is one of the fastest-growing suppliers of sustainable water management systems in the UK. The company was formed following the acquisition of SCP Water Management Ltd by Graf GmbH, the European market leaders in rainwater harvesting. Graf UK Ltd specialises in stormwater management, wastewater treatment, and rainwater harvesting.

The company has built up trading relationships with several builders merchants throughout the UK, as well as specialist partners and stockists of rainwater harvesting products to improve and enhance their distribution. They also supply bespoke products for customers new and old and have a good network of contacts within the civil engineering and general construction industry.

Graf UK Ltd provides cost-effective, reliable solutions, which can be installed on an individual plot basis or a shared system for several houses. They also provide larger systems for commercial developments including hotels, supermarkets, industrial buildings, and warehousing/storage. All of the systems sold and installed by Graf UK meet British Standard 8515: 2009.

Their business office is located at Regen House, Beaumont Road, Banbury OX16 1RH, England. They are an active private limited company incorporated on 4 April 2013.

Rating: 3.9/5


  • Wide range of rainwater harvesting products
  • Environmentally conscious practices
  • Reliable customer service


  • Slightly higher pricing
  • Reports of occasional delays in delivery


  • “Very good quality butts. Great that the tap is pre-drilled with a screw fit and there is access similarly at the bottom to drain or measure.”
  • “Great Service. Very good customer service from all the departments. Enjoyed talking to the very pleasant delivery driver who was well informed on the products.”
  • “Graf. An absolute pleasure to work with, competitive price, short lead time, fast material delivery, installation was swift with a high standard of installation highly recommended.”
  • “As one of Graf UK Kent, Sussex and Sussex accredited installers and service providers we are really happy with all the products and services we get from Graf. Every order is on time and correct with great back up support from all the team whenever needed via phone or email.”
  • “We bought the ergo raised bed planters for my parents. They were badly let down by a landscape contractor so we needed something easy and quick to install but also something affordable and stylish. They tick both these boxes and more.”

Factors Considered While Choosing the Best Companies

While selecting the top rainwater harvesting companies in the UK, we considered several factors to ensure a comprehensive and fair evaluation. Here are the key factors:

Experience and Expertise

We looked at the number of years the company has been in operation and the level of expertise they have in the field of rainwater harvesting. Companies with a long history in the industry often have a wealth of experience and knowledge that can be invaluable.

Customer Reviews and Ratings

We considered the reviews and ratings given by customers on various platforms. These reviews provide insight into the quality of service provided by the company and the satisfaction level of their clients.

Range of Services

We evaluated the range of services offered by the company. Companies that provide a wide range of services related to rainwater harvesting were given higher preference.

Innovation and Sustainability

We also considered the company’s commitment to innovation and sustainability. Companies that use advanced and eco-friendly technologies in their systems were favoured.

Certifications and Accreditations

We checked for any certifications or accreditations the company has received from recognized industry bodies. These serve as a testament to the company’s commitment to maintaining high standards in their operations.

Geographical Coverage

We considered the geographical coverage of the company. Companies that offer their services across a wide area were given higher preference.

By considering these factors, we have tried to provide a balanced and fair evaluation of the top rainwater harvesting companies in the UK. However, we recommend potential clients to conduct their own research and consider their specific needs before choosing a company.

Take Benefit of the Best Harvesting Company in UK

Choosing the right rainwater harvesting company can make a significant difference in your water conservation efforts. Resolute Civils stands out as our top choice among the best rainwater harvesting companies in the UK. 

With their extensive experience, innovative solutions, and commitment to sustainability, they are leading the way in the industry. Their high customer ratings and positive reviews reflect their dedication to providing excellent service. 

By choosing Resolute Civils, you’re not just investing in a rainwater harvesting system; you’re investing in a sustainable future. So why wait? Take advantage of their expertise and make a positive impact on the environment today. Remember, every drop counts!


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