Modern Systems, Backed by Experience
At STS, we upgrade outdated septic tanks to modern, regulation-compliant Package Treatment Plants (PTPs). Whether you're a homeowner who needs to meet new environmental rules or you're exploring the nutrient mitigation scheme, we deliver dependable solutions built on decades of industry experience.

Discover the Benefits of a Package Treatment Plant
Package Treatment Plants (PTPs) are a modern, sustainable alternative to outdated septic tanks. They help homeowners meet environmental regulations, reduce pollution risks, and protect local water sources — all with minimal maintenance.
Smarter Technology for Cleaner Water
Our PTPs use advanced treatment systems to improve water quality and protect local ecosystems.
Low-Maintenance, Cost-Effective Upgrades
Built to last and simple to run, our systems offer long-term savings and minimal disruption.
Sustainable Systems for a Healthier Environment
Every upgrade helps reduce pollution and aligns with current environmental regulations.
Upgrade with Confidence — Modern Solutions for Better Wastewater Management
We specialise in upgrading outdated septic tanks with high-performance Package Treatment Plants (PTPs). These systems treat wastewater more effectively, helping protect local water sources and the surrounding environment.
With decades of industry experience, our team delivers compliant, low-maintenance installations that meet the latest environmental standards — with minimal disruption to your home.
Trusted Installations, Proven Performance
Our PTP systems are installed by experienced professionals, delivering long-term reliability and full compliance from day one.
Cleaner, Smarter Wastewater Solutions
Our modern systems reduce environmental impact, require minimal maintenance, and fit seamlessly into residential properties.
Personalised Support from Start to Finish
From your first enquiry to final checks, we offer clear guidance, honest advice, and dependable service tailored to your project.
Technology That Goes Beyond the Tank
At STS, we don’t just install systems — we power them. Our platform helps homeowners monitor their tanks in real time, while our nutrient credit database supports developers navigating complex planning requirements. It’s infrastructure, intelligently managed.

How It Works — Straightforward from Start to Finish
Step 1: Free Site Survey
We visit your property to assess what’s needed. With decades of experience, we quickly determine the right solution — no jargon, no fuss.
Step 2: Clear, No-Nonsense Quote
We send a tailored quote based on your site and needs. It’s transparent, practical, and gives you everything you need to make a decision.
Step 3: Schedule Your Installation
If you’re happy with the quote, we agree a date and plan the install. We’ll confirm if permissions are needed — and sort them for you if they are.
Step 4: Get Set Up & Connected
We install your Package Treatment Plant and get your system up and running — with optional smart monitoring for long-term peace of mind.
Ready to Upgrade Your Septic System?
Book a free survey or speak to our team — no obligation, just clear advice.
