Professional Sewage Treatment Solutions You Can Rely On
If your property isn’t connected to the main sewer network, you need a safe and reliable sewage treatment system in place. At Haydon’s Drainage, we provide expert sewage treatment plant installation, servicing, and repairs for domestic and commercial clients across the UK.
Whether you’re upgrading an outdated system, replacing a failed soakaway, or need urgent repairs, our fully qualified team is here to help—delivering clean, efficient, and compliant wastewater solutions tailored to your needs.


What Is a Sewage Treatment Plant?
A sewage treatment plant is a modern alternative to a traditional septic tank. It actively treats wastewater through mechanical and biological processes, breaking down solid waste and returning clean water into the environment. It’s more eco-friendly, effective, and often required by modern building regulations.
Off-mains drainage is crucial for properties that are too far from a mains connection or where the local mains system has reached capacity. In such cases, a sewage treatment plant becomes essential. Whether you’re building a new home or replacing an existing system, here’s what you need to know.
At Haydon’s Drainage, we work with all types of sewage treatment plants, including:
- Small domestic units for individual homes
- Larger systems for multiple households or commercial use
- Upgrades from septic tanks to full treatment plants
- Bio-disc and air-driven systems
Design Considerations
1. Regulations and Compliance
- Understanding sewage treatment regulations is paramount. Consult your local authority and relevant environment agency to ensure compliance.
- Different rules apply in England, Northern Ireland, Scotland, and Wales1.
2. Choosing the Right System
- Assess your property’s needs and select an appropriate sewage treatment system.
- Consider factors like capacity, site conditions, and environmental impact.
3. Sizing and Design
- Our qualified engineers at Haydons Drainage will guide you through the process.
- Determine the right plant size based on household size and usage.
- Design the discharge point to meet legal requirements.

Treatment Plant Installation Process
1. Site Survey and Assessment
- Our experts visit your property to assess the site.
- We evaluate ground conditions, available space, and access points.
2. System Installation
- Excavate the area for the treatment plant.
- Install the tank, pipework, and control panel.
- Connect the system to your property’s plumbing.
3. Commissioning and Testing
- We ensure the system operates correctly.
- Test for leaks, flow rates, and efficiency.
We offer a full suite of services to keep your system running smoothly:
Installation of new sewage treatment plants
Servicing and maintenance to prevent breakdowns
Repairs to pipework, control units, and tanks
Soakaway and drainage field replacement
Domestic & Commercial Specialists
We’ve helped everyone from homeowners in rural locations to small businesses and landlords. No matter the scale of the job, you’ll receive honest advice, transparent pricing, and expert workmanship.
Typical clients include:
- Homes off the mains sewer
- Rental properties
- Farmhouses and rural cottages
- Small industrial sites and units
- New developments or conversions
