UK's specialist supplier

Water, waste & septic tanks — delivered nationwide

From 5 to 1,000,000 litre capacity with a huge range of options. Potable, non-potable, rainwater harvesting and sewage treatment. Trade accounts welcome.

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Unlimited
Capacity range
3500+
Tanks to choose from
4.8/5
From 3,200 reviews
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I need
Capacity
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Nationwide deliveryGB and NI coverage
Trade accounts30-day terms available
Expert adviceMon–Fri 8am–6pm
WRAS & KIWACompliant product range
01 · Categories

Shop by category

Every category is stocked in multiple sizes and materials. Filter by capacity, inlet, or fitting on any page.

Water storage tanks
Over 350 products · From £30

Water storage tanks

Potable and non-potable storage. Above-ground, underground and loft variants.

Shop water tanks →
IBC tanks
9 products · From £130

IBC tanks

1,000L intermediate bulk containers — new, reconditioned, and food-grade.

Shop IBCs →
Wastewater tanks
Over 300 products · From £280

Wastewater tanks

Our wastewater tanks come in all shapes and sizes, for both domestic and industrial use.

Shop wastewater →
GRP tanks
From 835 products · From £190

GRP tanks

GRP cold water tanks are available as potable, one-piece, two-piece, and sectional water tanks,

Shop GRP tanks →
Parts & Accessories
Over 820 products · From £0.08

Parts & Accessories

We offer a comprehensive range of parts and accessories to keep your tank running smoothly and efficiently.

Shop parts & accessories →
Booster Pump Sets
Over 340 products · From £260

Booster Pump Sets

Our WRAS-approved Cold Water Booster Sets deliver consistent, reliable water performance on demand.

Shop booster pump sets →
02 · Prepare for the season

The seasonal collection

Suggested based on the current or approaching season.

See the full collection
30 Gallon Cattle Drinker
Agricultural Tanks

30 Gallon Cattle Drinker
£85.00
ex VAT
In stock
250 Litre Marquee Weight
Water Tanks

250 Litre Marquee Weight
Black / Outlet
From£133.00
ex VAT
In stock
Horse Haybell Feeder
Agricultural Tanks

Horse Haybell Feeder
£427.00
ex VAT
In stock
1250 Litre Baffled Water Tank, Flat
Water Tanks

1250 Litre Baffled Water Tank, Flat
Black / 1'' Outlet
From£494.00
ex VAT
In stock
Sewage Station, 190 litre tank
Waste Water Tanks

Sewage Station, 190 litre tank
10 Metre Head Pump Upgrade
From£515.00
ex VAT
In stock
Enduramaxx 10,000 Litre Non Potable Water Tank
Water Tanks

Enduramaxx 10,000 Litre Non Potable Water Tank
Black
From£1,125.00
ex VAT
In stock
GRP Booster Enclosure PWH-1.2x1.2x1.2
Water Tanks

GRP Booster Enclosure PWH-1.2x1.2x1.2
Green
£1,699.00
ex VAT
In stock
Clearwater BioAir CW2 Sewage Treatment Plant - 6 Person
Waste Water Tanks

Clearwater BioAir CW2 Sewage Treatment Plant - 6 Person
Gravity / Inlet Invert Depth - 645 - 1015 mm
From£1,743.00
ex VAT
In stock

03 · Featured product

10000 Litre Round Water Tank, Potable

A robust and versatile solution that is full KUKreg4 with KIWA accreditation, it is designed to meet any water storage requirements.

  • 10000 litres Potable above groundwater tank.
  • KUKREG4 Accredited To ensure total compliance.
  • Available in a 'Non-Potable' option.
  • High-quality MDP UV stabilised.
Add to basket — £1,050 ex VATTD Own Brand
04 · Guidance

Choosing the right system

Free, plain-English guides written by our technical team. Useful for homeowners, self-builders and installers.

All you need to know about bladder tanks

How to size a potable tank for your household, and why a direct vs indirect feed matters.

Read the guide →

Sewage treatment, 1–20+ persons

When you need a treatment plant vs a septic tank, and what the 2020 rules changed.

Read the guide →

Great advice on septic tanks

Shallow dig, deep invert, onion vs spherical — and what your ground conditions decide for you.

Read the guide →
Need help choosing?

Talk to a
specialist

Sizing, regulations, installation. Our team has been answering these questions for over 25 years.

Phone 01643 703358Mon-Fri 8am-6pm WhatsApp Message usTap to open WhatsApp Email sales@tanks-direct.co.ukPrompt, courteous replies

05 · ABOUT US

Welcome to Tanks Direct

Our extensive range of water storage tanks include Above and below ground water storage tanks, Baffled water tanks, IBC's, rainwater harvesting tanks and water butts to name but a few. We offer a full range of plastic, steel and GRP (fibreglass) water tanks, cold water tanks for the loft and large galvanised steel water tanks for agricultural use.  Food grade water containers that are suitable for potable (drinking) water, chemical storage, waste water and general cold water storage.

Sewage Treatment Plants

Sewage treatment plants are ideal for any residences that require an off mains drainage solution and produce cleaner, more environmentally friendly water for discharge. Domestic sewage treatment plants are available from Kingspan Klargester, Clearwater, Harlequin, Clenviro and Rewatec (Premier Tech) With capacities of up to 50 people and over 15,000 litres. 

With the the industry-leading Harlequin Hydroclear, Klargester BioDisc, Klargester BioAir. Rewatec ASP and Clearwater BioTec Treatment Plants. All of our Sewage Treatment Plants meet or exceed all current legislation including the General Binding Rules 2020. Read our complete guide on Sewage Treatment Plants here.

Majority of our plastic tanks are made from UV stabilised high quality MDPE (Medium Density Polyethylene), the tanks are hard wearing, weatherproof and long-lasting. If the tanks are being used to store or transport drinking water then the tanks need to be listed as suitable for potable water. We offer UK and International delivery.

We have a number of helpful guides on water storage tanks on Tanks Direct. Read more on how should buy new IBC tanks, how water booster pumps work and much more now.

Septic Tanks

Our extensive range of Septic Tanks caters from any size from 2,500 litres to 79,000 litres from leading UK and Irish manufacturers including Klargester and Clearwater.

A septic tank consists of a two or three chamber system that retains sewage from a property for sufficient time to allow the solids to form into sludge at the base of the tank, where it is partially broken down through anaerobic digestion. The remaining liquid in the tank then overflows from the tank by means of an outlet pipe to a drainage field.

The traditional shape of the septic tank is the onion/bulb shaped tank, however to save on excavation costs we also offer a full range of shallow dig tanks.

We also have an informative guide on Septic Tank regulations that you can read today!

Trusted for more than 40 years
4.8 / 5
3,214 verified reviews

Delivery was a day earlier than quoted and the driver helped us get it off the lorry. Perfect.

M. Patel · Self-builder · Devon

Ordered 14 IBCs for a site in Leicester. Invoiced on 30-day terms, everything arrived shrink-wrapped.

Groundworks Ltd · Midlands

Technical team actually knew what they were talking about. Sized the plant, sorted the outlet spec, done.

J. Reeves · Smallholding · Powys