Cesspit Installation and Replacement Across Sussex, Surrey and Kent
CJ Groundworks installs and replaces sealed cesspits for homes, rural properties, farms and commercial premises across Sussex, Surrey and Kent.
With more than 35 years of groundworks and drainage experience, our family-run team can manage the physical installation from the initial site assessment and excavation through to tank placement, pipework connections, backfilling and reinstatement.
A cesspit is not suitable for every property. Before recommending one, we consider the expected volume of wastewater, available space, tanker access, ground conditions and whether connection to the public sewer or another off-mains system is practical.
You will receive clear advice on the proposed installation and a quotation based on the conditions at your property.
/Definition
What Is a Cesspit and How Does It Work?
A cesspit, also known as a cesspool, is a sealed underground tank that stores sewage and wastewater from a property that is not connected to the public sewer.
Unlike a septic tank or sewage treatment plant, a cesspit does not treat wastewater and has no outlet or environmental discharge. All waste remains inside the tank until it is removed by a registered waste carrier. A cesspit may be considered where:
- A connection to the public foul sewer is not practical
- The site is unsuitable for a septic-tank drainage field
- A permitted discharge from a treatment plant cannot be achieved
- The building has limited or intermittent use
- Planning, environmental or ground constraints rule out another system
Because every litre of wastewater must be stored and removed, the tank needs adequate capacity and reliable access for regular emptying.
/ Our Services
Cesspit Installation, Replacement and Groundworks
New Cesspit Installation
We install sealed cesspits for domestic, agricultural and commercial properties that cannot use a public sewer, septic tank or sewage treatment plant.
The installation can include:
- Assessment of the proposed tank position
- Review of tanker and machinery access
- Excavation and preparation of the installation area
- Formation of the specified base or anchoring arrangement
- Supply and positioning of the cesspit
- Inlet drainage and ventilation connections
- High-level alarm provision where included
- Backfilling in accordance with the tank specification
- Reinstatement of the affected ground
- Coordination with Building Control where included in the quotation
The tank size and installation method will be selected according to the property’s expected use, site conditions and manufacturer requirements.
Cesspit Replacement and Tank Upgrades
An existing cesspit may need replacing if it is cracked, leaking, structurally damaged, regularly overflowing or no longer large enough for the property’s level of use.
Common reasons for replacement include:
- Visible damage to the chamber or access cover
- Groundwater entering the tank
- Sewage leaking into the surrounding ground
- More frequent emptying following increased occupancy
- Damaged inlet pipework or ventilation
- Unsafe or inadequate access for inspection and emptying
- An older system that cannot be repaired reliably
We can inspect the accessible parts of the installation, explain the likely cause of the problem and recommend repair, replacement or an alternative off-mains drainage system.
Replacement work can include decommissioning the existing tank, installing the new cesspit, altering the connecting drainage and reinstating disturbed areas.
/Planning
Is a Cesspit Suitable for Your Property?
A cesspit is normally considered where there is no practical mains-sewer connection and the site cannot support another suitable off-mains drainage system. It may be appropriate for:
- Rural homes with drainage or environmental constraints
- Holiday accommodation with controlled or intermittent use
- Temporary or seasonal buildings
- Farms and equestrian premises
- Properties without a suitable drainage field
- Sites where a treated discharge cannot be made
A cesspit may be less practical for a heavily occupied property because all wastewater must be stored and removed by tanker. Water use, tank capacity, emptying frequency, access and ongoing operating costs should therefore be considered before installation.
CJ Groundworks can assess the physical requirements of the site and explain how a cesspit compares with a septic tank or sewage treatment plant.
/ Our Mission
Why Choose CJ Groundworks for Your Cesspit Installation?
35+ Years of Experience
A long-standing reputation built on expert workmanship.
In-House
Team
No subcontractors; we keep all trades under one roof.
Fully Insured &
Guaranteed
No subcontractors; we keep all trades under one roof.
Compliant &
Certified
All works carried out to UK building regs and environmental standards.
Local
Expertise
Proudly serving Sussex, Surrey & Kent.
/ Our Area
Cesspit Installation Areas
We provide cesspit installation in:
- Cranleigh
- Horsham
- Midhurst
- Petworth
- Pulborough
- All surrounding areas in Sussex, Surrey, and Kent
Arrange a Cesspit Site Assessment
Planning a new cesspit or concerned about an existing tank?
Call CJ Groundworks on 07881 757877 or send us the property postcode, expected number of users and details of the current drainage arrangement.
We will discuss the project, arrange a site visit where needed and provide a clear quotation for the agreed installation or replacement work. Where a cesspit is unlikely to be practical, we will explain the alternative options available.
/ FAQs
Frequently Asked Questions
A cesspit is a sealed underground tank that collects and stores sewage and wastewater. It doesn’t treat or discharge waste and must be regularly emptied by licensed professionals.
Emptying frequency depends on tank capacity and property usage. Most domestic cesspits require emptying every 2–4 weeks.
Yes — cesspit installations are legal, provided they are watertight, professionally installed, and emptied safely by authorised waste carriers.
Depending on your site, you might consider:
- Septic tanks with soakaway systems
- Sewage treatment plants that discharge treated water to a watercourse
CJ Groundworks can help determine the most suitable off-mains drainage option.
The cost of cesspit installation varies based on tank size, access, and ground conditions. We offer fixed-price quotes following a free, no-obligation site survey.
/Our Contact
Ready to break ground?
Get in touch with CJ Groundworks today to discuss your project and receive a free, no-obligation quotation. Our team is here to answer your questions and provide expert advice tailored to your needs.
Address
CJ Groundworks, Lower Batchelors, Emms Lane, Barns Green, West Sussex, RH13 0QH.
/Our Testimonials
What clients say about us
/ From the blog
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