GRP Underground Water Tanks

Our range of GRP underground tanks are engineered to exacting standards using the advanced chop hoop filament winding process, offering unmatched strength and reliability for below-ground installations. This patented manufacturing technique, selected after extensive research and testing, creates tanks with superior structural integrity and exceptional durability. From compact 1,000-litre units to expansive 90,000-litre systems, each tank is precision-engineered to withstand the specific demands of underground installation.
You'll discover perfect options for stormwater attenuation systems, fire-fighting sprinkler reservoirs, and potable water storage facilities. These versatile tanks also excel as septic and settlement tanks, cesspools, silage effluent holding tanks, and rainwater storage systems. The outstanding chemical resistance and structural strength make them ideal for specialised applications such as accidental spillage containment, transformer oil dump tanks, and package pumping chambers.
The superior design characteristics of our underground GRP tanks ensure outstanding performance throughout their service life. You'll benefit from their excellent resistance to ground movement, exceptional chemical compatibility, and proven long-term durability. Each tank undergoes rigorous quality control during manufacture, guaranteeing consistent performance in even the most challenging underground environments.
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List
1000 Litre GRP Underground Water Tank
1000 Litre (220 Gallon) Underground water tank
Applications:
Stormwater attenuation
Fire fighting sprinkler reservoirs
Potable water storage
Septic/settlement tanks
Cesspools and silage effluent holding tanks
Rainwater Storage
Accidental spillage containment
Transformer oil dump tanks
Package pumping chambers
These underground tanks are filament wound by the technically...
2000 Litre Below ground Water Tank
2000 Litre (440 Gallon) Underground water tank
Applications:
Stormwater attenuation
Fire fighting sprinkler reservoirs
Potable water storage
Septic/settlement tanks
Cesspools and silage effluent holding tanks
Rainwater Storage
Accidental spillage containment
Transformer oil dump tanks
Package pumping chambers
These underground tanks are filament wound by the technically...
3000 Litre GRP Underground Water Tank
3000 Litre (660 Gallon) Underground water tank.
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
4000 Litre GRP Underground Water Tank
4000 Litre (900 Gallon) Underground water tank.
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
5000 Litre Underground Water Tank
5000 Litre (1100 Gallon) Underground water tank.
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
5800 Litre Underground water tank
5860 Litre (1289 Gallon) Underground water tank.
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
6000 Litre GRP Underground Water Tank
6000 Litre (1319 Gallon) Underground water tank
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
6000 Litre Underground Water Tank
6000 Litre (1300 Gallon) Underground water tank.
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
7000 Litre Below ground Water Tank
7000 Litre (1500 Gallon) Underground water tank.
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
7300 Litre Underground Water Tank
7300 Litre (1605 Gallon) Underground water tank
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
8000 Litre GRP Underground Water Tank
8000 Litre (1759 Gallon) Underground water tank
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
9000 Litre Underground Water Tank
9000 Litre (1970 Gallon) Underground water tank.
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
10,000 Litre Underground Water Tank, GRP
10000 Litre (2200 Gallon) Underground water tank
Applications:
Stormwater attenuation
Fire fighting sprinkler reservoirs
Potable water storage
Septic/settlement tanks
Cesspools and silage effluent holding tanks
Rainwater Storage
Accidental spillage containment
Transformer oil dump tanks
Package pumping chambers
These underground tanks are filament wound by the technically...
10,400 Litre Underground Water Tank
10400 Litre (2287 Gallon) Underground water tank
Applications:
Stormwater attenuation
Fire fighting sprinkler reservoirs
Potable water storage
Septic/settlement tanks
Cesspools and silage effluent holding tanks
Rainwater Storage
Accidental spillage containment
Transformer oil dump tanks
Package pumping chambers
These underground tanks are filament wound by the technically...
12,000 Litre Underground Water Tank
12000 Litre (2639 Gallon) Underground water tank
Applications:
Stormwater attenuation
Fire fighting sprinkler reservoirs
Potable water storage
Septic/settlement tanks
Cesspools and silage effluent holding tanks
Rainwater Storage
Accidental spillage containment
Transformer oil dump tanks
Package pumping chambers
These underground tanks are filament wound by the technically...
13,500 Litre Underground Water Tank
13650 Litre (3002 Gallon) Underground water tank
Applications:
Stormwater attenuation
Fire fighting sprinkler reservoirs
Potable water storage
Septic/settlement tanks
Cesspools and silage effluent holding tanks
Rainwater Storage
Accidental spillage containment
Transformer oil dump tanks
Package pumping chambers
These underground tanks are filament wound by the technically...
Klargester 15,000 Litre Water Holding Tank
15,000 Litre Water Holding Tank - Suitable for Non-Potable Water Storage
The Klargester Underground Non-Potable Water Holding Tank is a high-capacity, sealed storage unit specifically engineered for non-potable (non-drinking water) applications. Suitable for use in industrial, agricultural, commercial, and landscaping environments, this tank offers a reliable solution for storing grey water, stormwater,...
from £4,572.00 ex VAT
(£5,486.40 inc VAT)
17,000 Litre Underground Water Tank
17000 Litre (3739 Gallon) Underground water tank.
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
18,000 Litre GRP Underground Water Tank
18200 Litre (4003 Gallon) Underground water tank.
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
20,000 Litre GRP Underground Water Tank
20000 Litre (4399 Gallon) Underground water tank
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
Klargester 22,000 Litre Water Holding Tank
22,000 Litre Water Holding Tank - Suitable for Non Potable Water Storage
The Klargester Underground Non-Potable Water Holding Tank is a high-capacity, sealed storage unit specifically engineered for non-potable (non-drinking water) applications. Suitable for use in industrial, agricultural, commercial, and landscaping environments, this tank offers a reliable solution for storing grey water, stormwater,...
from £5,999.00 ex VAT
(£7,198.80 inc VAT)
25,000 Litre GRP Underground Water Tank
25000 Litre (5499 Gallon) Underground water tank.
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
27,000 Litre Underground Water Tank
27300 Litre (6005 Gallon) Underground water tank
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
30,000 Litre Underground Water Tank
30000 Litre (6599 Gallon) Underground water tank.
Applications:
Stormwater attenuation
Fire fighting sprinkler reservoirs
Potable water storage
Septic/settlement tanks
Cesspools and silage effluent holding tanks
Rainwater Storage
Accidental spillage containment
Transformer oil dump tanks
Package pumping chambers
These underground tanks are filament wound by the technically...
Klargester 34,000 Litre Water Holding Tank
34,000 Litre Water Holding Tank - Suitable for Non Potable Water Storage
The Klargester Underground Non-Potable Water Holding Tank is a high-capacity, sealed storage unit specifically engineered for non-potable (non-drinking water) applications. Suitable for use in industrial, agricultural, commercial, and landscaping environments, this tank offers a reliable solution for storing grey water, stormwater,...
from £7,926.00 ex VAT
(£9,511.20 inc VAT)
35,000 Litre Underground Water Tank
35000 Litre (7698 Gallon) Underground water tank.
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
40,000 Litre GRP Underground Water Tank
40000 Litre (8798 Gallon) Underground water tank
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
45,000 Litre Underground Water Tank
45500 Litre (10008 Gallon) Underground water tank.
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
Klargester 46,000 Litre Water Holding Tank
46,000 Litre Water Holding Tank - Suitable for Non Potable Water Storage
The Klargester Underground Non-Potable Water Holding Tank is a high-capacity, sealed storage unit specifically engineered for non-potable (non-drinking water) applications. Suitable for use in industrial, agricultural, commercial, and landscaping environments, this tank offers a reliable solution for storing grey water, stormwater,...
from £9,850.00 ex VAT
(£11,820.00 inc VAT)
50,000 Litre Underground Water Tank
50000 Litre (10998 Gallon) Underground water tank.
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
55,000 Litre Underground Water Tank
55000 Litre (12098 Gallon) Underground water tank.
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
Klargester 59,000 Litre Water Holding Tank
59,000 Litre Water Holding Tank - Suitable for Non Potable Water Storage
The Klargester Underground Non-Potable Water Holding Tank is a high-capacity, sealed storage unit specifically engineered for non-potable (non-drinking water) applications. Suitable for use in industrial, agricultural, commercial, and landscaping environments, this tank offers a reliable solution for storing grey water, stormwater,...
from £12,541.00 ex VAT
(£15,049.20 inc VAT)
60,000 Litre Underground Water Tank
60000 Litre (13198 Gallon) Underground water tank.
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
Klargester 63,000 Litre Water Holding Tank
63,000 Litre Water Holding Tank - Suitable for Non Potable Water Storage
The Klargester Underground Non-Potable Water Holding Tank is a high-capacity, sealed storage unit specifically engineered for non-potable (non-drinking water) applications. Suitable for use in industrial, agricultural, commercial, and landscaping environments, this tank offers a reliable solution for storing grey water, stormwater,...
from £13,238.00 ex VAT
(£15,885.60 inc VAT)
70,000 Litre Underground Water Tank
70000 Litre (15397 Gallon) Underground water tank.
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
75,000 Litre Underground Water Tank
75000 Litre (14700 Gallon) Underground water tank.
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
Klargester 79,000 Litre Water Holding Tank
79,000 Litre Water Holding Tank - Suitable for Non Potable Water Storage
The Klargester Underground Non-Potable Water Holding Tank is a high-capacity, sealed storage unit specifically engineered for non-potable (non-drinking water) applications. Suitable for use in industrial, agricultural, commercial, and landscaping environments, this tank offers a reliable solution for storing grey water, stormwater,...
from £15,973.00 ex VAT
(£19,167.60 inc VAT)
80,000 Litre Underground Water Tank
80000 Litre (17597 Gallon) Underground water tank.
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...
90,000 Litre Underground Water Tank
90400 Litre (19797 Gallon) Underground water tank
Applications:
- Stormwater attenuation
- Fire fighting sprinkler reservoirs
- Potable water storage
- Septic/settlement tanks
- Cesspools and silage effluent holding tanks
- Rainwater Storage
- Accidental spillage containment
- Transformer oil dump tanks
- Package pumping chambers
These underground tanks are filament wound by the technically...