Unlock Planning with Certified Nutrient Mitigation
STS provides a Natural England–assessed mitigation scheme that helps developers meet nutrient neutrality rules and secure planning approval. We install and maintain high-performance Package Treatment Plants (PTPs), issue nutrient credits, and track everything through our digital platform — so you can move forward with confidence.

A Practical Route Through Planning Delays
New developments in sensitive catchments are increasingly held up by nutrient neutrality requirements. Our scheme offsets the wastewater impact of new homes by upgrading existing rural treatment systems — enabling Local Planning Authorities to approve your development with confidence.
We handle the mitigation, the paperwork, and the long-term maintenance — so you can focus on delivery.
A Digital Platform Built for Developers
Our custom platform puts control and clarity in your hands — from initial enquiry to planning submission.
Track credit availability in real time, generate site-specific documentation, and manage your mitigation strategy all in one place.
Automated Documentation
Generate credit certificates and Shadow HRAs for submission in just a few clicks.
Project Dashboard
Monitor credit status, installation milestones, and servicing timelines from a single interface.
Transparent Compliance Tracking
Every credit is logged, timestamped, and linked to mitigation activity — supporting LPA confidence and long-term assurance.
Guided by Advice from Natural England
We received advice from Natural England confirming that Local Planning Authorities can rely on our scheme when undertaking Appropriate Assessments. This provides confidence for developers, planners, and homeowners navigating the nutrient neutrality process.
Secure Credits and Move Forward With Confidence
Credit availability depends on catchment and timing. Get in touch today to check availability, review site suitability, or explore how STS can support your next planning submission.