Septic Tanks

With so many different types and sizes of septic tank systems on offer at Cotterill Civils, we’re bound to have something to suit your needs. As one of the UK’s leading septic tank suppliers, we are able to offer tanks from 2,800 litres up to and beyond the massive industrial size of 79,000 litres. Styles range from the basic septic tank to the shallow dig and the cylindrical tank, and with our highly efficient delivery and septic tank replacement or installation services, we see the process through from beginning to end, ensuring that you are completely satisfied with the result. We have been doing business in this industry for almost twenty-five years, and pride ourselves in our knowledge and expertise, so you can be sure that your equipment is in very safe hands. Much of our equipment is guaranteed for fifty years for your peace of mind.

If you would like to talk to one of our experts today, 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. Our number is 0121 351 3230, and we’re always happy to take your call. Let us know your requirements, and we’re sure to be able to find a product that meets your needs exactly.

  • 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)
  • Klargester Alpha Septic Tank Cover & Frame Image

    Klargester Alpha Septic Tank Cover & Frame

    0 out of 5

    Glavanised steel cover and black polypropylene frame to fit Klargester Alpha septic tank.

    This Klargester cover and frame is pedestrian rated and has a maximum weight limit of 1 tonne.

    Shipping cost £15 – Estimated delivery: 3-5 days

    £47.30 (£56.76 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)