Sewage Engineering
Off Mains Drainage Solutions Designed for Compliance and Reliability
At Wessex Pumps and Pipework we specialise in providing expert sewage engineering solutions for properties not connected to the mains sewer. Whether you’re managing waste on a private estate or planning a commercial installation, we deliver systems that are efficient, legal, and built to last.
From design and planning to full installation and servicing, we offer a complete solution tailored to your site and sector.
We design and install bespoke off mains drainage systems for:
- Industrial and commercial properties
- Private homes and country estates
- Horticultural and marine sites
- Equestrian and agricultural facilities
Off Mains Drainage Systems
When mains connection isn’t possible we install:
- Septic tanks
- Sewage treatment plants
- Sewage pumping stations
Every system must meet UK regulations and Environment Agency guidelines:
- BS EN 12566 – Standards for small sewage treatment systems
- BS 6297:2007 – Design of drainage fields
- Only treatment plants can discharge to watercourses
- Permits required for most non domestic discharges
We handle all aspects of compliance, from Environment Agency permissions to final commissioning.
Septic Tank Systems
A simple and cost effective solution.
How it works:
Effluent enters a tank where solids settle. The clarified liquid drains into a soakaway system for ground filtration.
Requirements:
- Percolation test to assess soil suitability
- Cannot discharge to rivers or streams
Advantages:
- Low installation and maintenance cost
- Few mechanical parts
Limitations:
- Needs porous ground conditions
- Not suitable for watercourse discharge
Sewage Treatment Plants
Eco-friendly wastewater treatment.
How it works:
Wastewater passes through an aeration chamber where natural bacteria break down pollutants. The treated effluent is safe to discharge into a watercourse.
Advantages:
- High quality, environmentally safe discharge
- Suitable for ditches, streams, and rivers
- Compact, efficient design
Limitations:
- Requires a power supply
- Routine maintenance is essential
Sewage Pumping Stations
When gravity drainage isn’t an option.
How it works:
Wastewater is collected in a chamber and pumped via a small bore pipe to the mains sewer or treatment system.
Advantages:
- Ideal for remote or sloping sites
- Avoids major excavation or soakaway construction
- Cost effective for challenging locations
Limitations:
- Requires electricity
- Pumps and control panels need servicing
Mains Sewer Connections
If your property is close to the public sewer, UK law requires a connection unless technically unfeasible.
We provide:
- Application and compliance support
- All civil engineering and excavation work
- Pumping solutions where gravity systems can’t be used
Servicing and Maintenance
Keep your system compliant and running smoothly.
Routine servicing extends system life, reduces running costs and ensures compliance with UK discharge laws.
Our services include:
- Full maintenance contracts
- Emergency call outs – 24/7 availability
- Repairs and upgrades (including third party systems)
Speak to the Experts
Whether you’re planning a new system or need to upgrade an existing one, Wessex Pumps and Pipework has the experience, equipment, and regulatory knowledge to help.
Contact us today to arrange a free site assessment or consultation.