Septic Tanks

Aiming to meet and exceed the requirements of all domestic, agricultural, commercial and industrial needs, Cotterill Civils are UK leading suppliers of Septic Tanks. We provide a wide range of tanks, including various types and sizes to offer something suitable for everyone.

What are Septic Tanks used for?
The main purpose of our Septic Tanks is to collect and treat wastewater in a way that’s efficient. They are generally used when a domestic dwelling isn’t connected to the main sewage system as a method for naturally processing sewage.

Our Septic Tanks are found underground and made up of two chambers. Water enters the first chamber of a Septic Tank through an inlet pipe and separates wastewater, leaving a layer of scum (grease and oil deposits) at the bottom. The wastewater then enters the second chamber and exits through an outlet pipe where it will reach a drainage field.

Septic Tanks provide an economic solution for homes and businesses of all sizes that don’t have access to mains drainage.

Here at Cotterill Civils, we are able to offer tanks from 2,800 litres, all the way up to (and beyond) the industrial 79,000 litre tanks!

When choosing a Septic Tank, you’ll discover a choice of styles too, ranging from the Basic Septic Tanks to the Shallow Dig and Cylindrical Tanks. No matter what you’re looking for, you’re sure to find a tank that meets your exact needs and wants because we supply Septic Tanks for all applications!

With leading brands like Marsh, Klargester and Clearwater, we provide you with the option to choose a high-quality tank that boasts durability and versatility. Our Septic Tanks are designed to be robust and lightweight which makes them perfect for various applications.

Septic Tanks are designed with your needs in mind. When compared to other Sewage Treatment Plants, Septic Tanks require less maintenance to ensure effective operation. To make sure that you get the most out of your Septic Tank, avoid flushing items that could potentially block the inlet and outlet pipes (this includes food waste, oils, medical waste and many other materials).

Why Cotterill Civils?
Over the last 25 years, the team at Cotterill Civils have developed a wealth of knowledge and experience when it comes to supplying Septic Tanks for all applications. We aim to deliver our products with a high level of efficiency, ensuring that your products arrive in plenty of time and that you receive an outstanding service.

As experts in installation, Cotterill Civils can also take care of the process from start to finish, guaranteeing complete satisfaction. So whether you’d like us to simply supply the tank or install and service it for you, we can help.

If you would like to discuss your needs further, we have an online chat service as well as a dedicated office that you can call for advice between 8am and 5pm Monday to Friday. We are always happy to take your call so feel free to call us on 0121 351 3230.

  • Marsh Cylindrical Septic Tank 2,800 litre Image

    Marsh Cylindrical Septic Tank 2,800 litre

    0 out of 5

    Product Spec :

    Length (mm) : 3000

    Width (mm) : 1250

    Height (mm) : 1750

    Inlet Invert (mm) : 500

    Outlet Invert (mm) : 800

    Advantages of using Marsh Tanks:

    • Easy installation with ‘keying-in’ lip and lifting eyes
    • Has a flat bottom so that it doesn’t roll during installation
    • Can be installed in pea-shingle
    • Tested and certified to BSEN12566-1
    • 50 year design life
    • 25 year structural guarantee

     

     

    P.O.A. (£0.00 incl VAT)
  • Marsh Cylindrical Septic Tank 2,800 litre Image

    Marsh Cylindrical Septic Tank 3,800 litre

    0 out of 5

    Product Spec :

    Length (mm) : 4000

    Width (mm) : 1250

    Height (mm) : 1750

    Inlet Invert (mm) : 500

    Outlet Invert (mm) : 800

    Advantages of using Marsh Tanks:

    • Easy installation with ‘keying-in’ lip and lifting eyes
    • Has a flat bottom so that it doesn’t roll during installation
    • Can be installed in pea-shingle
    • Tested and certified to BSEN12566-1
    • 50 year design life
    • 25 year structural guarantee

     

    P.O.A. (£0.00 incl VAT)
  • Marsh Cylindrical Septic Tank 2,800 litre Image

    Marsh Cylindrical Septic Tank 4,500 litre

    0 out of 5

    Product Spec :

    Length (mm) : 2650

    Width (mm) : 1600

    Height (mm) : 2100

    Inlet Invert (mm) : 500

    Outlet Invert (mm) : 800

    Advantages of using Marsh Tanks:

    • Easy installation with ‘keying-in’ lip and lifting eyes
    • Has a flat bottom so that it doesn’t roll during installation
    • Can be installed in pea-shingle
    • Tested and certified to BSEN12566-1
    • 50 year design life
    • 25 year structural guarantee

     

    P.O.A. (£0.00 incl VAT)
  • Marsh Cylindrical Septic Tank 2,800 litre Image

    Marsh Cylindrical Septic Tank 6,000 litre

    0 out of 5

    Product Spec :

    Length (mm) : 2950

    Width (mm) : 1900

    Height (mm) : 2400

    Inlet Invert (mm) : 500

    Outlet Invert (mm) : 800

    Advantages of using Marsh Tanks:

    • Easy installation with ‘keying-in’ lip and lifting eyes
    • Has a flat bottom so that it doesn’t roll during installation
    • Can be installed in pea-shingle
    • Tested and certified to BSEN12566-1
    • 50 year design life
    • 25 year structural guarantee

     

    P.O.A. (£0.00 incl VAT)
  • Marsh Spherical Septic Tank 2,800 litre Image

    Marsh Spherical Septic Tank 2,800 litre

    0 out of 5

    Product Spec :

    Diameter (mm) : 1870

    Height (mm) : 2780

    Inlet Invert (mm) : 1000

    Outlet Invert (mm) : 1075

    Advantages of using Marsh Tanks:

    • Easy installation with ‘keying-in’ lip and lifting eyes
    • Has a flat bottom so that it doesn’t roll during installation
    • Can be installed in pea-shingle
    • Tested and certified to BSEN12566-1
    • 50 year design life
    • 25 year structural guarantee

     

    P.O.A. (£0.00 incl VAT)
  • Marsh Spherical Septic Tank 2,800 litre Image

    Marsh Spherical Septic Tank 3,800 litre

    0 out of 5

    Product Spec :

    Diameter (mm) : 2075

    Height (mm) : 3000

    Inlet Invert (mm) : 1000

    Outlet Invert (mm) : 1075

    Advantages of using Marsh Tanks:

    • Easy installation with ‘keying-in’ lip and lifting eyes
    • Has a flat bottom so that it doesn’t roll during installation
    • Can be installed in pea-shingle
    • Tested and certified to BSEN12566-1
    • 50 year design life
    • 25 year structural guarantee

     

    P.O.A. (£0.00 incl VAT)
  • Marsh Spherical Septic Tank 2,800 litre Image

    Marsh Spherical Septic Tank 4,500 litre

    0 out of 5

    Product Spec :

    Diameter (mm) : 2196

    Height (mm) : 3100

    Inlet Invert (mm) : 1000

    Outlet Invert (mm) : 1075

    Advantages of using Marsh Tanks:

    • Easy installation with ‘keying-in’ lip and lifting eyes
    • Has a flat bottom so that it doesn’t roll during installation
    • Can be installed in pea-shingle
    • Tested and certified to BSEN12566-1
    • 50 year design life
    • 25 year structural guarantee

     

    P.O.A. (£0.00 incl VAT)
  • Clearwater Septic Tank 4,600 ltr (1000mm invert) Image

    Klargester Alpha GRP Septic Tank 2,800 Litre – upto 5 person

    0 out of 5

    CAPACITY ; 2800 LITRES

    No. PEOPLE (150l/head/day) : 5

    WIDTH (mm) : 1905

    INLET LEVEL TO BASE (mm) : 1565

    Klargester Alpha tanks provide a reliable and economic solution for homes not connected to mains drainage. Alpha tanks are manufactured from composite GRP – light, chemically resistant and watertight.

    Estimated delivery: 5-7 days

    £473.00 (£567.60 incl VAT)
  • Clearwater Septic Tank 4,600 ltr (1000mm invert) Image

    Clearwater Septic Tank 2,800 ltr (1000mm invert)

    0 out of 5

    Product Spec:

    • Capacity (Ltrs) : 2800
    • No. People (150 lts/head/day) : 5
    • Width (mm) : 1905
    • Inlet Level to Base (mm) : 1565
    • Height (mm) : 2599

    Features:

    • Manufactured from GRP – strong, light, chemically resistant and watertight
    • Suitable for homes up to 5 occupants
    • Performance tested to EN-12566 (part 1)

    Estimated delivery: 5-7 days

     

    £491.05 (£589.26 incl VAT)
  • Clearwater Septic Tank 4,600 ltr (1000mm invert) Image

    Klargester Alpha GRP Septic Tank 3,800 litre

    0 out of 5

    CAPACITY : 3800 LITRES

    No. PEOPLE (150l/head/day) : 12

    WIDTH (mm) : 2070

    INLET LEVEL TO BASE (mm) : 1795

     

    Klargester Alpha tanks provide a reliable and economic solution for homes not connected to mains drainage. Alpha tanks are manufactured from composite GRP – light, chemically resistant and watertight.

    Estimated delivery: 5-7 days

    £598.40 (£718.08 incl VAT)
  • Clearwater Shallow Dig Septic Tank 5,700 ltr (500mm invert) Image

    Clearwater Shallow Dig Septic Tank 2,800 ltr (500mm invert)

    0 out of 5

    Product Spec:

    • Capacity (Ltrs) : 2800
    • No. People (150 lts/head/day) : 5
    • Diameter (mm) : 1225
    • Length (mm) : 2955
    • Standard Invert Height (mm) : 500

    Features:

    • 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.

    Estimated Delivery 5-7 Days

     

    £681.95 (£818.34 incl VAT)
  • Klargester Shallow Dig Septic Tank 9,150 litre Image

    Klargester Shallow Dig Septic Tank 2,800 litre

    0 out of 5

    Product Spec :

    Capacity (Ltrs) : 2800

    No.People (150l/head/day) : 5

    Diameter (mm) :1225

    Length (mm) : 2955

    Standard Invert Height (mm) : 500

     

    Robust and simple to install

    • Less excavation costs, less soil disposal and less backfill material
    • Made from composite GRP – strong, light, chemically resistant and watertight
    • EN-12566 Part 1 approved and 99.7% efficient

    Estimated delivery: 5-7 days

     

    £690.80 (£828.96 incl VAT)
  • Clearwater Septic Tank 4,600 ltr (1000mm invert) Image

    Klargester Alpha GRP Septic Tank 4600 litre

    0 out of 5

    CAPACITY : 4600 LITRES

    No. PEOPLE (150l/head/day) : 17

    WIDTH (mm) : 2080

    INLET LEVEL TO BASE (mm) : 2035

     

    Klargester Alpha tanks provide a reliable and economic solution for homes not connected to mains drainage. Alpha tanks are manufactured from composite GRP – light, chemically resistant and watertight.

    Estimated delivery: 5-7 days

    £695.20 (£834.24 incl VAT)
  • Clearwater Septic Tank 4,600 ltr (1000mm invert) Image

    Clearwater Septic Tank 4,600 ltr (1000mm invert)

    0 out of 5

    Product Spec:

    • Capacity (Ltrs) : 4600
    • No. People (150 lts/head/day) : 17
    • Width (mm) : 2080
    • Inlet Level to Base (mm) : 2035
    • Height (mm) : 2984

    Features:

    • Manufactured from GRP – strong, light, chemically resistant and watertight
    • Suitable for homes with up to 17 occupants
    • Performance tested to EN-12566 (part 1)

    Estimated Delivery 5-7 Days

     

    £718.75 (£862.50 incl VAT)
  • Clearwater Shallow Dig Septic Tank 5,700 ltr (500mm invert) Image

    Clearwater Shallow Dig Septic Tank 3,800 ltr (500mm invert)

    0 out of 5

    Product Spec:

    • Capacity (Ltrs) : 3800
    • No. People (150 lts/head/day) : 12
    • Diameter (mm) : 1225
    • Length (mm) : 3895
    • Standard Invert Height (mm) : 500

    Features:

    • 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.

    Estimated Delivery 5-7 Days

    £809.60 (£971.52 incl VAT)
  • Klargester Shallow Dig Septic Tank 9,150 litre Image

    Klargester Shallow Dig Septic Tank 3,800 litre

    0 out of 5

    Product Spec :

    Capacity (Ltrs) : 3800

    No.People (150l/head/day) : 12

    Diameter (mm) : 1225

    Length (mm) : 3895

    Standard Invert Height (mm) : 500

     

    Robust and simple to install

    • Less excavation costs, less soil disposal and less backfill material
    • Made from composite GRP – strong, light, chemically resistant and watertight
    • EN-12566 Part 1 approved and 99.7% efficient

    Estimated delivery: 5-7 days

    £817.30 (£980.76 incl VAT)
  • Klargester Shallow Dig Septic Tank 9,150 litre Image

    Klargester Shallow Dig Septic Tank 5,700 litre

    0 out of 5

    Product Spec :

    Capacity (Ltrs) : 5700

    No.People (150l/head/day) : 24

    Diameter (mm) : 1425

    Length (mm) : 4275

    Standard Invert Height (mm) : 500

    Robust and simple to install

    • Less excavation costs, less soil disposal and less backfill material
    • Made from composite GRP – strong, light, chemically resistant and watertight
    • EN-12566 Part 1 approved and 99.7% efficient

    Estimated delivery: 5-7 days

    £1,177.00 (£1,412.40 incl VAT)
  • Clearwater Shallow Dig Septic Tank 5,700 ltr (500mm invert) Image

    Clearwater Shallow Dig Septic Tank 5,700 ltr (500mm invert)

    0 out of 5

    Product Spec:

    • Capacity (Ltrs) : 5700
    • No. People (150 lts/head/day) : 24
    • Diameter (mm) : 1425
    • Length (mm) : 4275
    • Standard Invert Height (mm) : 500

    Features:

    • 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.

    Estimated Delivery 5-7 Days

     

    £1,263.85 (£1,516.62 incl VAT)
  • Klargester Shallow Dig Septic Tank 9,150 litre Image

    Klargester Shallow Dig Septic Tank 7150 litre

    0 out of 5

    Product Spec :

    Capacity (Ltrs) : 7150

    No.People (150l/head/day) : 34

    Diameter (mm) : 1920

    Length (mm) : 3225

    Standard Invert Height (mm) : 500

    Robust and simple to install

    • Less excavation costs, less soil disposal and less backfill material
    • Made from composite GRP – strong, light, chemically resistant and watertight
    • EN-12566 Part 1 approved and 99.7% efficient

    Estimated delivery: 5-7 days

    £1,504.80 (£1,805.76 incl VAT)
  • Klargester Shallow Dig Septic Tank 9,150 litre Image

    Klargester Shallow Dig Septic Tank 9,150 litre

    0 out of 5

    Product Spec :

    Capacity (Ltrs) : 9150

    No.People (150l/head/day) : 47

    Diameter (mm) : 1920

    Length (mm) : 3960

    Standard Invert Height (mm) : 500

     

    Robust and simple to install

    • Less excavation costs, less soil disposal and less backfill material
    • Made from composite GRP – strong, light, chemically resistant and watertight
    • EN-12566 Part 1 approved and 99.7% efficient

    Estimated delivery: 5-7 days

    £1,922.80 (£2,307.36 incl VAT)