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Large Concrete Water Tanks
10,200L - 32,000L

Due to today’s climate and water restrictions many people are opting for large capacity water storage tanks. These tanks are designed for residential, rural and commercial situations. Our commercial heavy duty concrete tanks can be manifolded for water retention/ detention and fire fighting storage (see commercial gallery). Fittings, tank heights and lids can be customised to your needs.

We can provide squat tanks which are ideal for high water table or rocky areas with difficult excavation. Our 3.5m diameter range (10,200ltr - 23,000ltr) are suitable for above ground and retaining situations.
LARGE CONCRETE WATER TANK SIZES (click on your preferred size tank below for more information)
PRODUCT CODE  WEIGHT (T) CAPACITY (L) DIAMETER (M) TOTAL HEIGHT (M)
HD 10200 (squat)
T2 Lid (Class B)
T44 Lid (Class D)
6.8
8.5
9.8
10,200
3.5
1.49
1.565
1.615
HD 14000
T2 Lid (Class B)
T44 Lid (Class D)

7.5
9.3
10.5
14,000
3.5
1.875
1.95
2.00
HD 18000
T2 Lid (Class B)
T44 Lid (Class D)

9.3
11.0
12.5
18,000
3.5
2.275
2.35
2.4
HD 23000
T2 Lid (Class B)
T44 Lid (Class D)

10.0
11.6
13.0
23,000 3.5 2.8
2.875
2.925
STD 32000
T2 Lid (Class B)
T44 Lid (Class D)

13.0
14.8
N/A
32,000 3.5 4.0
4.075
N/A

* Light Traffic Lid required for all under ground units (2 Tonne Point Load) an additional 75mm to total height.
* 32,000lt units not suitable for above ground - MUST be at least 3m in ground.



Small Concrete Water Tanks
3,700L - 10,000L

Allcast Precast small concrete water tanks are designed to exceed minimum holding capacity requirements for single and multi residential buildings.

These tanks are ideal for townhouses and developments with small sized allotments. With the option of placing our light trafficable lids on top for underground use it allows precious space to be available on housing blocks. Lids and covers can be altered for below lawn, driveways and patios.

The Allcast Precast 5,200ltr squat underground concrete water tank is designed and manufactured for residential and commercial builds. The dimensions of the tank allows for shallow excavation which is great for areas with high water tables or rocky ground.


SMALL CONCRETE WATER TANK SIZES (click on your preferred size tank below for more information)
PRODUCT CODE  WEIGHT (T) CAPACITY (L) DIAMETRE (M) TOTAL HEIGHT (M)
STD 3700 (Squat)
T2 Lid (Class B)
2.5
3.3
3,700
1.93
1.7
1.775
STD 5200
T2 Lid (Class B)
3.0
3.8
5,200
1.93
2.275
2.35
STD 5200 (Squat)
T2 Lid (Class B)
4.0
4.8
5,200
2.5
1.475
1.55

STD 6200 (Squat)
T2 Lid (Class B)
4.3
5.0
6,200
2.5
1.725
1.8
STD 8600
T2 Lid (Class B)
4.5
5.3
8,600
2.5
2.225
2.3
STD 10000
T2 Lid (Class B)
6.3
7.0
10,000
2.5
2.6
2.675
* Light Traffic Lid required for all under ground units (2 Tonne Point Load) an additional 75mm to total height.
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