Graf UK Ltd Reviews 

1,213
TrustScore 4.5 out of 5

4.6

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Rated 5 out of 5 stars

I recently had 2 treatment plants commissioned and have to say I was delighted with the service received. Not only from the visiting service engineer who was excellent nothing was to much trouble.... See more

Rated 5 out of 5 stars

We purchased a filtration system through their website and then found out that it might not be suitable for what we needed so I called them up and spoke to one of their advisers who confirmed this aft... See more

Rated 5 out of 5 stars

Graf employees were extremely helpful from the first phone call I made to installation and commissioning. They were always on hand to answer any queries I had during the whole process, special thanks... See more

Rated 5 out of 5 stars

Despatched promptly. Website easy, courier texted to arrange delivery and delivered when they said they would. One butt wrapped in cardboard with minimal plastic- one more Ricky shape wrapped in bale... See more

Company details

  1. Manufacturer

Written by the company

Graf UK is the UK's fastest growing supplier of sustainable water management systems. We first started out as a specialist supplier of rainwater harvesting systems. Over the years as our knowledge and experience has grown, we have grown our product range which now includes stormwater attenuation & soakaway tanks, sewage treatment plants, septic tanks & cesspools, water butts and composters. We offer the full package of design, supply, installation, commissioning & maintenance to all of our customers whether that's for one-off private builds, to multiple-plot developments for housing associations, to commercial industrial units. In addition to our office in Banbury, Oxfordshire we have branches in Glasgow, Scotland and Galway.


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4.6

Excellent

TrustScore 4.5 out of 5

1K reviews

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4.6

All reviews

(1,213)

30 reviews in the last 12 months

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Rated 5 out of 5 stars

I recently had 2 treatment plants…

I recently had 2 treatment plants commissioned and have to say I was delighted with the service received.
Not only from the visiting service engineer who was excellent nothing was to much trouble. He was clear and precise on what we had and what was next.
The commissioning lady was a delight and we had almost next day service. In this complicated world it's nice to know that you can still get top draw service.
Thank You

July 14, 2026
Unprompted review
Rated 5 out of 5 stars

Excellent customer service

We purchased a filtration system through their website and then found out that it might not be suitable for what we needed so I called them up and spoke to one of their advisers who confirmed this after going through all the details with me. I then called their main office to ask if we could cancel the order. They agreed to this without any quibble and issued a refund for the full amount paid. I cannot speak for the quality of the products however their customer service was excellent

June 22, 2026
Unprompted review
Rated 5 out of 5 stars

Graf employees were extremely helpful…

Graf employees were extremely helpful from the first phone call I made to installation and commissioning. They were always on hand to answer any queries I had during the whole process, special thanks to Ewan for his time and help. Installing a sewerage treatment plant is a very daunting task made easy by this excellent company. Thank you.

April 16, 2026
Unprompted review
Rated 5 out of 5 stars

glad to have a Graf plant

I have had a difficult build but Graf team have been helpful throughout in resolving all matters to do with my graf one2clean plant and its commissioning.

May 7, 2026
Unprompted review
Rated 5 out of 5 stars

Good ordering experience

Good ordering experience. More updates on delivery progress and expected delivery time would be have improved the experience. Product is good and was straightforward to install.

April 13, 2026
Unprompted review
Rated 5 out of 5 stars

Very helpful in a difficult process

Thanks Graf, for helping me through the difficult process of choosing and installing a new Sewage Treatment Plant. Neville and Hadley were very helpful throughout the process. I would happily recommend them.

April 23, 2026
Unprompted review
Rated 5 out of 5 stars

We purchased a water butt for the…

We purchased a water butt for the garden, delivery was quick and it looks great in the garden. We have now decided, that we want another, but prices have gone up massively. In fact another £97. That's 33% roughly. I get that its coming into summer season, but its a lot money. Can you do a discount for a returning customer?

February 2, 2026
Unprompted review
Graf UK Ltd logo

Reply from Graf UK Ltd

Hi Lana, thank you very much for your review. We'd be happy to help out - could you please send us an email at info@grafuk.co.uk?

Thanks,
Charlie

Rated 5 out of 5 stars

Large water butt

A placed an order the product was not cheap but very good quality the delivery service was excellent I am very happy with the product and the service.

April 1, 2026
Unprompted review
Graf UK Ltd logo

Reply from Graf UK Ltd

Hi Ruth, thank you for leaving a review. We really hope you enjoy your new water butts.

Rated 5 out of 5 stars

Almost unbelievably good service....

Almost unbelievably good service....

My wife and I are a little shocked with the speed and quality the service provided. Flavia responded very quickly to my initial contact and continued with clear feedback.

Albeit Godfrey was luckily in this part of the country, he phoned me to walk through the problem and then turned up exactly when he said he would. He was polite and friendly, and solved the issue extremely quickly.

Thank you Graf for the exceptional service you have provided.

Kind regards,

Ross M

March 30, 2026
Unprompted review
Rated 5 out of 5 stars

A first class service and product

A first class service and product. We have installed one of 3 tanks and the service from Graf was outstanding. The commissioning appointment and paperwork was easy to make and do. The engineer turned up spot on time and did a great job commissioning the unit . The paperwork was sent over extremely quickly for the warranty . From start to finish we had a very high level of efficiency and service.

December 2, 2025
Unprompted review
Graf UK Ltd logo

Reply from Graf UK Ltd

Hi Tracy, thank you for leaving a review. We're glad you enjoyed your experience with GRAF UK!

Rated 5 out of 5 stars

Recycled plastic

Quality water butt. Fast delivery and good communication. Love the fact that it is 100 per cent recycled plastic. Recommended

March 1, 2026
Unprompted review
Graf UK Ltd logo

Reply from Graf UK Ltd

Thank you for the review. We really hope you enjoy your new water butt.

Rated 4 out of 5 stars

Bought the Graf green slim wall tank…

Bought the Graf green slim wall tank 330litres. Good thick plastic so I think it will last well.
Only complaint is the tap supplied is useless. sprays water all over the place (and I have checked it has no blockage) and the thread on the end is slightly different to standard UK fittings. I will need to empty water butt to replace.

January 11, 2026
Unprompted review
Graf UK Ltd logo

Reply from Graf UK Ltd

Hi John, thank you for your review. Sorry to hear you're having issues with your tap. Would you like us to send a replacement?

Rated 1 out of 5 stars

Buy Graf Septic Tank at your peril !

After just 4 years service we had to pay just over £1,600 for repairs to our Graf one2clean septic tank which was £500 more than the original cost before installation costs. The Graf sales pitch says they last over 20 years if properly maintained. Our septic tank was serviced annually by an approved Graf supplier.
When we complained to Graf they really showed little interest or concern.

January 29, 2026
Unprompted review
Graf UK Ltd logo

Reply from Graf UK Ltd

Hi Andy,

We’re sorry to read this and appreciate you taking the time to share your experience.

From our records, this related to an airlift issue reported last year on a system that was four years old at the time. Our technical team advised that the repair fell outside of the product warranty, and we understand this would have been frustrating.

In situations like this, it can sometimes be difficult to determine the exact cause, particularly where components may have been disturbed during routine maintenance or de-sludging. We did reach out via your servicing provider at the time to understand how you’d like us to proceed, but unfortunately, we didn’t receive a response.

That said, we genuinely don’t want any customer to feel unsupported. If you’re open to it, please contact us directly at info@grafuk.co.uk and we’ll be happy to review everything again with you.

Kind regards,
The GRAF UK Team

Rated 5 out of 5 stars

Purchased a 150l water butt.

Purchased a 150l water butt.
It was the cheapest on the market.
Delivered on time.
Couple of bits missing.
Rang the helpline.
They were delivered in a couple of days.
Totally stress free.
A pleasure to deal with.
Can't understand why you would shop elsewhere.

November 29, 2025
Unprompted review

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