Clearwater units are available in two shapes, spherical and cylindrical, with sizes suitable for all domestic applications.
Clearwater septic tanks are designed to meet both the installation requirements and the standards of discharge specified by EN 12566 Part 1.
Clearwater tanks are used for domestic sewage disposal where connection to a mains sewer is not practical.
The septic tanks in the range all achieve a high degree of settlement, producing a quality of effluent for discharge to a land drainage system.
Septic Tanks & Cesspools
A septic tank consists of a single 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.
Cesspools are designed for storage only, with their contents being emptied at regular intervals using tankers. High Level Alarms with audible and visual warnings are available for all tanks to enable level monitoring for optimum use.
When sizing a storage tank for domestic properties it must be noted that under the Building Regulations it must have a minimum capacity of 18,000 litres (2 people) under Environment Agency regulations.
When siting units there are a number of factors to be considered. Systems should not be positioned closer than 7 metres to any dwelling and as far as possible from any watercourse, normally not less than 10 metres. Adequate access to tankers for emptying should also be taken into consideration.
Shallow Dig Septic Tank
- Reduced installation costs – less soil disposal and excavation costs.
- Manufactured from GRP and EN12566-1 approved.
- 99.7% efficient.
- Suitable for pea shingle gravel backfill for dry sites
- Fully CE-marked
Spherical Septic Tank and Cesspool Selection Chart
Spherical septic tanks are manufactured as standard from 2,800 to 4,600 litres net working capacity.
Cylindrical cesspools are available with capacities from 18,000 to 26,000 litres. The cylindrical tank allows reduced depth excavation in comparison with the same size of spherical tank, offering considerable savings where ground conditions are difficult or where there is a high water table.
|Septic Tanks (Spherical)||Cesspools (Cylindrical)|
Septic Tanks have a 1.0m standard invert depth. 1.5m inverts are available upon request.
Cesspools are available with invert depths of up to 2.0m. For deeper cesspool inverts please contact our technical sales team.
Clearwater storage tanks provide a reliable solution for the collection and retention of:
- Surface water;
- Firefighting reservoirs;
- Rainwater harvesting reservoirs;
- Animal drinking reservoirs.
* For silage storage, please inquire.