Owls Hall, Farm Blackmore End, Braintree, Essex CM7 4DF
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Septic Tanks

Septic Tanks

Owls Hall Environmental has a wide range of septic tanks suited for both residential and commercial properties, all of which can be purchased online.

A Septic Tank is a system designed to treat wastewater where no mains sewer connection is available. The treated water is suitable to discharge through the ground via a suitably sized drainage field. A septic tank must be tested in accordance with EN12566/1 and sized correctly. You can use our free septic tank sizing calculator to help, or call us for more advice.

Septic tanks are made from GRP (or more modern versions from polyethene) which, like the Premier tech Septic tank, often have fine particle filters to help reduce suspended solids from the water and increase the lifespan of the drainage field. If you are discharging to a ditch, you will need to use a Sewage treatment plant.

Showing 1–12 of 14 results

  • Commercial Septic Tank

    3000L Millennium Septic Tank

    £ 590.00 excl VAT
    £ 708.00 incl VAT

    The Millennium septic tank is made from rotationally moulded Polyethylene and has a built in particle filter, offering easy installation and excellent performance. The 3000L tank is suitable for up to 6 population (4 bedrooms) and discharge to a drainage field.


    Free Delivery to UK Mainland – Excludes Highlands and Islands

    Lead Time: 1 to 2 weeks

    We will contact you upon order to arrange a suitable day for delivery.

    To get a delivery date prior to ordering, call us on: 01844 877030


    Add to basket

  • Commercial Septic Tank

    4000L Millennium Septic Tank

    £ 680.00 excl VAT
    £ 816.00 incl VAT

    The Millennium septic tank is made from rotationally moulded Polyethylene and has a built in particle filter, offering easy installation and excellent performance. The 4000L tank is suitable for up to 13 population and discharge to a drainage field.


    Free Delivery to UK Mainland – Excludes Highlands and Islands

    Lead Time: 1 to 2 weeks

    We will contact you upon order to arrange a suitable day for delivery.

    To get a delivery date prior to ordering, call us on: 01844 877030


    Add to basket

  • Commercial Septic Tank

    5000L Millennium Septic Tank

    £ 780.00 excl VAT
    £ 936.00 incl VAT

    The Millennium septic tank is made from rotationally moulded Polyethylene and has a built in particle filter, offering easy installation and excellent performance. The 5000 Litre tank is suitable for up to 20 population and discharge to a drainage field.


    Free Delivery to UK Mainland – Excludes Highlands and Islands

    Lead Time: 1 to 2 weeks

    We will contact you upon order to arrange a suitable day for delivery.

    To get a delivery date prior to ordering, call us on: 01844 877030


    Add to basket

  • Commercial Septic Tank

    6000L Millennium Septic Tank

    £ 1,039.00 excl VAT
    £ 1,246.80 incl VAT

    The Millennium septic tank is made from rotationally moulded Polyethylene and has a built in particle filter, offering easy installation and excellent performance. The 6000 Litre tank is suitable for up to 26 population and discharge to a drainage field.


    Free Delivery to UK Mainland – Excludes Highlands and Islands

    Lead Time: 1 to 2 weeks

    We will contact you upon order to arrange a suitable day for delivery.

    To get a delivery date prior to ordering, call us on: 01844 877030


    Add to basket

  • Commercial Septic Tank

    8000L Millennium Septic Tank

    £ 1,319.00 excl VAT
    £ 1,582.80 incl VAT

    The Millennium septic tank is made from rotationally moulded Polyethylene and has a built in particle filter, offering easy installation and excellent performance. The 8000L tank is suitable for up to 40 population and discharge to a drainage field.


    Free Delivery to UK Mainland – Excludes Highlands and Islands

    Lead Time: 1 to 2 weeks

    We will contact you upon order to arrange a suitable day for delivery.

    To get a delivery date prior to ordering, call us on: 01844 877030


    Add to basket

  • Commercial Septic Tank

    10000L Millennium Septic Tank

    £ 2,107.00 excl VAT
    £ 2,528.40 incl VAT

    The Millennium septic tank is made from rotationally moulded Polyethylene and has a built in particle filter, offering easy installation and excellent performance. The 10000 Litre tank is suitable for up to 53 Population and discharge to a drainage field.


    Free Delivery to UK Mainland – Excludes Highlands and Islands

    Lead Time: 1 to 2 weeks

    We will contact you upon order to arrange a suitable day for delivery.

    To get a delivery date prior to ordering, call us on: 01844 877030


    Add to basket

  • Clearwater GRP Septic Tank 4600L

    Clearwater GRP Septic Tank 2800L

    £ 455.00 excl VAT
    £ 546.00 incl VAT

    The Clearwater 2800L Septic tank is made from GRP and suitable for treating domestic wastewater to a level where discharge to ground via a correctly constructed drainage field is possible.


    Free Cover and Frame – No hidden extras at checkout

    Free Delivery to UK Mainland – Excludes Highlands and Islands

    Lead Time: 1 to 2 weeks

    We will contact you upon order to arrange a suitable day for delivery.

    To get a delivery date prior to ordering, call us on: 01844 877030


    Add to basket

  • Clearwater GRP Septic Tank 4600L

    Clearwater GRP Septic Tank 3800L

    £ 565.00 excl VAT
    £ 678.00 incl VAT

    The Clearwater 3800L Septic tank is made from GRP and suitable for treating domestic wastewater to a level where discharge to ground via a correctly constructed drainage field is possible.


    Free Cover and Frame – No hidden extras at checkout

    Free Delivery to UK Mainland – Excludes Highlands and Islands

    Lead Time: 1 to 2 weeks

    We will contact you upon order to arrange a suitable day for delivery.

    To get a delivery date prior to ordering, call us on: 01844 877030


    Add to basket

  • Clearwater GRP Septic Tank 4600L

    Clearwater GRP Septic Tank 4600L

    £ 665.00 excl VAT
    £ 798.00 incl VAT

    The Clearwater 4600L Septic tank is made from GRP and suitable for treating domestic wastewater to a level where discharge to ground via a correctly constructed soakaway is possible.


    Free Cover and Frame – No hidden extras at checkout

    Free Delivery to UK Mainland – Excludes Highlands and Islands

    Lead Time: 1 to 2 weeks

    We will contact you upon order to arrange a suitable day for delivery.

    To get a delivery date prior to ordering, call us on: 01844 877030


    Add to basket

  • Clearwater Shallow Dig Septic Tank 9150L

    Clearwater Shallow Dig Septic Tank 2800L

    £ 689.00 excl VAT
    £ 826.80 incl VAT

    The Clearwater Shallow Dig 2800L Septic tank is made from GRP and suitable for treating domestic wastewater to a level where discharge to ground via a correctly constructed soakaway is possible.


    Free Cover and Frame – No hidden extras at checkout

    Free Delivery to UK Mainland – Excludes Highlands and Islands

    Lead Time: 1 to 2 weeks

    We will contact you upon order to arrange a suitable day for delivery.

    To get a delivery date prior to ordering, call us on: 01844 877030


    Add to basket

  • Clearwater Shallow Dig Septic Tank 9150L

    Clearwater Shallow Dig Septic Tank 3800L

    £ 799.00 excl VAT
    £ 958.80 incl VAT

    The Clearwater Shallow Dig 3800L Septic tank is made from GRP and suitable for treating domestic wastewater to a level where discharge to ground via a correctly constructed soakaway is possible.


    Free Cover and Frame – No hidden extras at checkout

    Free Delivery to UK Mainland – Excludes Highlands and Islands

    Lead Time: 1 to 2 weeks

    We will contact you upon order to arrange a suitable day for delivery.

    To get a delivery date prior to ordering, call us on: 01844 877030

    Add to basket

  • Clearwater Shallow Dig Septic Tank 9150L

    Clearwater Shallow Dig Septic Tank 5700L

    £ 1,098.00 excl VAT
    £ 1,317.60 incl VAT

    The Clearwater Shallow Dig 5700L Septic tank is made from GRP and suitable for treating domestic wastewater to a level where discharge to ground via a correctly constructed soakaway is possible.


    Free Cover and Frame – No hidden extras at checkout

    Free Delivery to UK Mainland – Excludes Highlands and Islands

    Lead Time: 1 to 2 weeks

    We will contact you upon order to arrange a suitable day for delivery.

    To get a delivery date prior to ordering, call us on: 01844 877030


    Add to basket