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Expert Septic Tank Solutions in Banbury
Established as a family-run business, we have dedicated over three decades to delivering expert sewage treatment solutions across the UK. Our team of seasoned professionals specialises in the installation and supply of septic tanks, sewage treatment plants, and cesspools, ensuring compliance with the latest eco-friendly legislation and British Water standards. With a focus on precision and customer satisfaction, we tailor systems to meet diverse needsfrom rural cottages to large-scale hospitality projects. Our engineers combine technical expertise with a commitment to minimising environmental impact, leaving sites restored to their original condition. Backed by glowing customer testimonials, our reputation for reliability and excellence has been built through consistent delivery of promises.

We prioritise transparent communication, offering free expert advice and efficient project management from initial consultation to completion. Our partnerships with leading manufacturers ensure access to cutting-edge, low-phosphate technologies. Whether upgrading outdated systems or designing new installations, we provide end-to-end solutions with a focus on sustainability and regulatory compliance. Our dedication to innovation and customer-centric service has solidified our position as a trusted name in the wastewater industry.
Services
Sewage treatment plant installation Septic tank supply Soakaway systems Cesspool installation Drainage field design
Highlights and features
  • We have over 35 years of experience in wastewater management.
  • Our team includes qualified engineers and NAPIT-certified electricians.
  • We adhere to British Water installation standards.
  • Free expert advice and nationwide delivery available.
  • Proven track record with glowing customer testimonials.
Associations and certifications
  • British Water
What people say
Excellent workmanship Highly efficient Professional team Eco-friendly solutions On-time delivery
Services
Sewage treatment plant installation
We design and install compliant sewage treatment plants tailored to property size and usage. Our systems reduce environmental impact while meeting regulatory standards. Clients benefit from minimal site disruption and long-term operational efficiency.
Septic tank supply
We supply high-quality septic tanks suitable for residential and commercial properties. Our products meet modern environmental requirements and are compatible with existing drainage infrastructure. Expert guidance ensures optimal system selection.
Soakaway systems
Our soakaway systems manage surface water runoff effectively. Designed to match soil conditions and property needs, these systems prevent flooding and maintain ground stability while complying with local regulations.
Cesspool installation
We install secure cesspools for properties without mains drainage. These systems provide reliable wastewater storage with scheduled emptying requirements. Our installations prioritise leak prevention and environmental safety.
Drainage field design
Our drainage fields optimise wastewater dispersal for treatment plants and septic tanks. We assess soil permeability and property demands to create efficient, sustainable systems that prevent waterlogging and contamination.
People
Wayne Clark
Managing Director
Third-generation drainage expert with over 35 years in wastewater management. Specialises in eco-friendly solutions and complex installations. Mentored by his father, he combines traditional knowledge with modern techniques.
Stephanie Clark
Company Secretary
Oversees operations and customer service excellence. Manages administrative systems and site maintenance for the company's CL Campsite. Known for organisational precision and client-focused approach.
Hayden Clark
Installation Engineer
Qualified NAPIT electrician with extensive hands-on experience in sewage system installations. Combines technical expertise with practical problem-solving for challenging projects. Also manages electrical components of treatment systems.
Susannah Arnaboldi
Administrator
Efficient office manager handling customer inquiries and project coordination. Recognised for organisational skills and ability to resolve complex client queries. Ensures smooth communication between clients and installation teams.
Questions
What is the difference between a septic tank and a sewage treatment plant?
Septic tanks store wastewater for manual emptying, while treatment plants process waste biologically for safer environmental discharge.
How do I determine the right system size for my property?
System size depends on bedroom count or maximum occupancy. We calculate capacity requirements during initial consultations to ensure compliance and efficiency.
Do you provide nationwide installation services?
Yes, we operate across the UK, handling projects from small rural properties to large commercial developments with equal expertise.
Are your installations compliant with current regulations?
All our systems meet British Water standards and Environment Agency requirements, including recent phosphate and nitrate discharge restrictions.
What aftercare services do you offer?
We provide maintenance contracts, emergency repairs, and regular servicing to ensure long-term system functionality and regulatory compliance.
Reviews (3)
Paul Weeks
Nov 12, 2021 Report
@BioPure 3
@Septic Tank Store
Summary
if you need a domestic sewage treatment plant, the BioPure 3 is worth a look. But don't go near the Septic Tank Store for installation and aftercare service. The Short Version
We spent 12,000 getting a BioPure 3 domestic sewage plant installed by the Septic Tank Store. After 2 years of working really well, the alarm system failed, the tank then flooded, destroying the electrics, and the Septic Tank Store charged us 1,000 to fix it, without, at any point, showing any interest in finding out why the system that THEY recommended and supplied and installed
Stephen Adkins
Jun 23, 2021 Report
What a great job Wayne, Hayden and the team have done in installing the new treatment plant. Was a very tricky job, not helped by the atrocious wet weather at the start. Although it was a complicated process, the whole job went smoothly and with the minimum amount of disruption and fuss. Everything was left tidy and safe at the end of the day and when the job was finished. Many many thanks and I can’t recommend you highly enough- pleasure having you here Steve
Chas Smart
Nov 07, 2020 Report
Organising a replacement septic tank is for most of us, a once in a lifetime experience, so going about selecting the right company for the job is a little daunting. We had several quotes and discussions with would-be suppliers & installers and without doubt we made the right decision in opting for The Septic Tank Store. Why? Well they did all the… simple things correctly, like returning our phone calls when they said they would, arriving on time for the site inspection, discussing and explaining the challenges of the job in a straightforward manner, undertaking the job on time, finishing