Clearwater Alpha Septic Tank 4600 17 population

Clearwater Alpha Septic Tank 4600 17 population

£838.80 £778.80

Ex Tax: £649.00

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Clearwater Onion Shape Septic Tank 4600: 17 population


These septic tanks are of standard glass fibre construction - similar to the Klargester equivalent tank.

Onion shape septic tanks are currently the most used septic tanks in the UK, the most popular models being those manufactured by Klargester and Clearwater.

This type of septic tank has been improved over the years and now represents a cost effective yet high quality sewage treatment tank.

All septic tanks must have a soakaway system - click here for more information.

If you would like more detailed information on any of these septic tanks or any other sewage treatment or drainage related matters, please feel free to call us on 01296 326 111 -  we will be happy to give you the benefit of our experience in this field and some impartial advice.

Click here for drawings 

Click here for brochure 

Have You Got a Grease Trap?

The Building Regulations (Approved Part H) requires any hot food premises to install BS EN1825 Grease traps /interceptors in its drain runs.

Please Check Out Our Grease Trap Range Click Here

Sewage Treatment Plant Properly Registered?

Under the new EPP2 regulations, only septic tanks with the EN12566-3 2005 Certification are allowed to register for the Discharge Permit or Exemption now required by the Environment Agency for all new septic tanks or older tanks which were not previously registered with the Environment Agency for 'Consent to discharge'.

For more important information on the relevant legislation and how this may affect you please take a  look at our Sewage Disposal Legislation page.

If you would like UK Septic Tanks to register your Septic Tank or Sewage Treatment Plant with the Environment Agency then please go to our Registration Service page.

About Septic Tanks

Septic tanks are like sewage treatment plants – just on a smaller scale.They are chambered,vary in size (typical capacities 2800-5000 litres) and are used for properties with no mains drainage connection.

Septic tanks have an inlet from the waste pipe of the property and an outlet into the drainage field or soak-away. The term “septic” refers to the process of anaerobic bacteria (does not need lots of oxygen) breaking down and mineralizing waste discharged into the tank.

When waste enters the first chamber, solids settle and a surface scum forms 'crust'Settled solids then get digested by the bacteria and the remaining liquid waste enters the second and third chambers where more settlement of the waste happens – are you keeping up? Finally, excess water flows out via the outlet to the drainage field for further treatment from the soil. Any remaining solid waste must be removed periodically by tanker.

About Clearwater

Clearwater pollution control was established in 1978 and has a proven track record in the design and manufature of waste water treatment systems. They have produced a range of systems for waste water handling and also offer good quality, simplified rainwater harvesting systems for the home and garden controlled by a pump, suitable for either direct or gravity fed applications. 


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About Us

UK Septic Tanks and Drain Supplies are trading names of The Drainage Company Ltd. We pride ourselves on delivering good customer service and quality products. Because we are a family run business rather than a franchise, we can maintain competitive pricing on all our products – we are one of the largest septic tank suppliers in the UK. Head Office: 20-22 Wenlock Road London N1 7GU

Contact Us

01296 326111