Septic Tank Installation in Sussex, Surrey & Kent

Looking for reliable septic tank installation in Sussex, Surrey, or Kent? CJ Groundworks is your trusted local specialist with over 35 years of experience in drainage and off-mains wastewater systems. Whether you’re replacing an old tank, upgrading to meet regulations, or installing a new system for a rural property, our expert team will guide you through every stage — from site assessment to completion.

Our family-run business handles all aspects of installation, including excavation, drainage field design, soakaway construction, and Building Control approval. We guarantee every septic tank installation is fully compliant with UK environmental standards and Environment Agency (EA) guidelines.

/ Our Services

Our Septic Tank Installation Services

At CJ Groundworks, we deliver comprehensive septic tank solutions tailored to your property, location, and ground conditions.

Septic Tank Installation

Septic Tank Replacement

Septic Tank Emptying & Servicing

/Planning

When is a Septic Tank the Right Solution?

Septic tank installation is best suited for properties that:

They’re often used in rural homes, holiday properties, farms, and buildings where electricity supply is limited or inconsistent, making them a simpler alternative to sewage treatment plants.

We’ve installed septic tanks for:

If you’re unsure whether your property is better suited to a septic tank or sewage treatment plant, our experts will carry out a detailed ground assessment and provide honest, practical advice.

/ Our Mission

Why Choose CJ Groundworks for Septic Tank 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

Locations We Cover for Septic Tank Installation

Our team helps you determine if a septic tank is compliant and practical for your land.

Whether you’re searching for septic tank installation West Sussex or a professional replacement in Surrey or Kent, our experienced team can help.

Get a Free Septic
System Assessment

Call CJ Groundworks on 0788 175 7877 or email chris@cjgroundworks.com to book a free site survey and quote. We’ll recommend the best setup for your needs — whether that’s a new tank, an upgrade, or a switch to a sewage treatment plant.

/ FAQs

Septic Tank Installation FAQs

A septic tank is an underground chamber that collects and partially treats wastewater from your home. Solids settle at the bottom while liquid effluent drains safely into a soakaway or drainage field. It’s a passive, energy-free system that requires only periodic emptying.

Typically every 12–18 months, depending on usage and tank capacity. Neglecting to empty your tank can cause blockages, odours, and system failures. We can recommend trusted septic tank emptying providers in your local area.

Since 2020, all septic tanks must comply with the Environment Agency’s General Binding Rules. Discharges directly to surface water are no longer permitted. CJ Groundworks ensures every septic tank installation is fully compliant and properly certified.

Most installations only require Building Control notification rather than full planning permission. If discharging to a watercourse or installing in complex ground conditions, we’ll handle any necessary permits and approvals.

Signs include foul odours, standing water near the tank, backflow issues, or regular overflows. Our specialists can assess your system and advise if a new septic tank installation is needed.

/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.

Email

Phone

0788 175 7877
Mon – Sat, 9AM – 5PM

Follow Us

/Our Testimonials

What clients say about us

I contracted CJ Groundworks to install a sewage treatment plant, it was a very pleasant experience dealing with Chris and his ever smiling team. The job was done professionally in time at a reasonable price. The plant is working satisfactorily for 3 months.

Arvind Gulati

After calling round dozens of other contractors and hearing nothing I came across CJ groundwork's and I'm glad I did. They built a big shed base and carried out landscaping work in the garden. They fitted us in at short notice and everything was done to a brilliant standard at a fair......

Ryan Ainsworth

CJ and his sons, Henry and Marcus, did an excellent job fitting our new sewage treatment plant. Friendly, efficient and tidy. I would definitely recommend them for any groundworks.

Richard Jones

Chris and sons installed Aco channel and soakaway. Excellent job done and no hesitation recommending this company. Left the place tidy. Friendly people to deal with.

Ranjinie Fernando