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The conservancy tank is identical in appearance to our “Poly-Rib” 1.200 litre septic tank, but minus all pipes and fittings. A conservancy tank, by definition, has an inlet but no outlet, and is emptied by means of “honeysucking” through the manhole lid. In the event of a configuration comprising two or more conservancy tanks, the contents of all the tanks may be emptied by accessing the assembly through any one of the manhole lids. Any size may be configured by adding tanks to an assembly. Such assemblies can be either in series or in parallel depending on the availability of space. Conservancy tanks tend to be the most expensive option, in the long run, when deciding on an on-site sewage solution, the reason for this being the on-going expense of “honeysucking” on a regular basis.

The product specifications are as follows:

Diameter (cylindrical):

Total Capacity:
Fluid Working Capacity:
Wall Thickness:
Inlet and Outlet Diameter:
Manhole Diameter:
Manhole Lid Design:
Manhole Access Extension:

No Metallic Components
Indefinite Life

1,4 metres (base to manhole lid)
1,2 metres
1,5 metres
Cylindrical ribbed with domed ends and a centre internal stabiliser
bar to reinforce the domed ends against possible abnormal pressures.

40 Kg – easily transportable
1.200 litres
1.100 litres
Provision for filling with concrete ballast

It should be remembered that the effluent contained in these tanks is still highly toxic, and should not be allowed to flow into the environment. The depth of the effluent within the tanks should be inspected regularly to ensure that “honeysucking” (emptying) can take place prior to the assembly overflowing because the capacity has been exceeded.

We reiterate that the effluent contains high levels of toxicity and this should never be permitted to lie in puddles or dams.

When there are children around, ensure that concrete ballast is cast in the lids of the manholes to prevent the children from opening the manholes. If a person falls into one of the units, drowning could result.