What is a design for a septic installation?
A septic design is the blueprint for your installation. It specifies what septic system will be installed on your property, where it will go, and how everything will be configured.
Every design is unique. The right system for your neighbour's property may not be right for yours. Soil conditions, plot size, proximity to watercourses, and the number of people the system needs to serve all shape the final design.
Our designs are built around our own product range. Depending on your situation, your system may be as straightforward as a septic tank and drainage field. Or, it may require a sewage treatment plant for a higher level of treatment. Whatever the case, we have the right solution.
At the end of the process, you receive a complete design document. It specifies exactly what will be installed, where, and how. This document forms the basis of your regulatory approvals.
Already have a design from another provider?
No problem. We can review it and adapt it to Premier Tech products. Get in touch to discuss your situation.
How we create your septic system design
Once we have your site assessment and soil testing results, our design process begins.
We aim to have your completed design ready within 2 working days.
Here's what to expect:
- We review your results
We analyse your site assessment findings and soil testing data to understand exactly what your property can support and what regulatory requirements apply. - We select the right system
Based on your results, we identify the most appropriate system type and size for your situation — from a simple septic tank and drainage field to a more advanced sewage treatment plant system where needed. - We plan the layout
We determine the optimal location and configuration for your system and discharge area. We take into account your plot size, access restrictions, proximity to watercourses, and any other site-specific constraints. - We prepare your design document
We produce a complete design document that specifies exactly what will be installed, where, and how. This document forms the basis of your regulatory approvals and is yours to keep. - We walk you through the plan
We present the design to you in plain language, explain the reasoning behind our recommendations, and answer any questions you have before you decide how to proceed.
Professional septic design, at no cost to you
Our residential septic design service is free. No cost, no obligation.
Septic design is not typically a free service. Most companies bill for it — anywhere from £500 to £2,000 for a completed design document. With us, there's no charge.
If you choose to proceed with your design, we carry out the installation. You don't need to lose time finding a contractor. There are no delays from handoffs, and you don't need to explain your project to someone new. Just a fluid process from design to installation day.
Installation is a paid service. We will provide a clear, transparent quote based on your design before any work begins. You know exactly what to expect before you commit to anything.
Off-mains expertise you can count on
We have been working with off-mains drainage systems across the UK for more than 50 years.
We don't just design systems — we manufacture, install, and service them. That means we understand the full picture, from soil conditions and regulatory requirements to the long-term performance of every component we specify.
When you request a free septic design with us, you get:
- expertise backed by British Water accreditation
- honest, straightforward advice with no jargon and no pressure
- a team that stands behind every design and installation
