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Rainwater Harvesting Packages, Rainwater Tanks, Accessories, and more…

from £1400.00

Rainwater Harvesting Packages

from £300.00

Rainwater tanks

from £600.00

Pumps & Control units

from £20.00


from £190.00

Above ground rainwater tanks

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GRAF UK – Specialists In Water Management

Graf UK Ltd is one of the fastest-growing suppliers of sustainable water management systems in the UK. We’re focused on three top priorities;

> Preventing flooding in increasingly extreme weather conditions, through stormwater management.
> Preventing sewage being discharged into water courses.
> Putting the precious resource of rainwater to good use through rainwater harvesting.

Using 100% recycled materials in the process.

“We believe that we can all do more to help save water. In the future everyone will realise how precious it is.”

The Latest From Instagram

Every stormwater crate on the market has what's called a void ratio.

This percentage tells you how much space in the crate is available to hold water as a small percentage of the volume of the crate is taken up my plastic.

The higher the void ratio the better, as the crate can hold more water and with large attenuation tanks this could mean that overall size of the tank is smaller due to a higher void ratio of the tank.

In this clip we explain more about what void ratio is and what it means.

#stormwatermanagement #stormwaterattenuation #attenuationtank #civils #drainage

Harvesting rainwater to reuse in your garden is incredibly beneficial for your plants, as most plants in your garden prefer slightly acidic water and rainwater is slightly acidic.

So, it's no wonder why people want to connect a rainwater harvesting tank to a garden irrigation system, to automatically feed their garden with nutrient filled rainwater.

#rainwaterharvesting #rainwaterharvestingsystem #drainage #water #watersaving #rainwatercollection

Did you know that most plants in your garden prefer slightly acidic water? And guess what rainwater is slightly acidic! 🧪

By using rainwater, you give your plants the perfect soil conditions to grow and flourish in. ☔️

Plus, mains water is treated with alkaline in order to protect metal pipework from corroding over time, and if you water your plants with mains water then you are reducing the acidity levels in the soil. 🚰

#rainwaterharvesting #rainwatercollection #rainwaterharvestingsystem #watersaving #ecofriendly

As with any system that's installed underground it's hard to tell if there's a problem with it until the last minute when most of the damage has been done.

Being able to inspect a stormwater tank periodically can help you spot any potential issues with the tank, that's why having access for regular maintenance can prevent future problems from occuring.

#stormwaterattenuation #stormwatermanagement #attenuationtank #suds #civils #drainage

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