Building public trust, one catchment at a time

Revolutionising water management with transparency and innovation

Building public trust, one catchment at a time

Revolutionising water management with transparency and innovation

About Additive Catchments

Welcome to Additive Catchments, where our commitment to environmental stewardship and community trust guides everything we do.

Our pioneering Catchment Management as a Service (CMaaS) is at the forefront of ensuring water quality and compliance through continuous monitoring and actionable insights.

Leveraging advanced IoT-enabled sensors and AI applications, we empower water companies with the confidence to meet regulatory demands, specifically Section 82, while offering communities unparalleled transparency into the environmental impact of water management operations.

Our technology solutions​

Catchment Monitoring as a Service (CMaaS®)

Combine advanced monitoring, systems thinking and AI to gain a comprehensive view of waterway health.

Storm Overflow Monitoring

Predict and monitor the impact of storm overflows on our waterways in real time.

Agricultural Monitoring

Gain detailed insight into farming practices’ effects on local water bodies and adopt more sustainable practices, reduce runoff, and enhance biodiversity.

Nature-Based Solution Monitoring

Evaluate the effectiveness of green infrastructure in improving water quality, nutrient neutrality and habitat conditions.

Our mission

At Additive Catchments, our mission is twofold: to provide water companies with a state-of-the-art tool for compliance and environmental management, and to rebuild public trust in water management from river to sea. CMaaS represents a paradigm shi< in water quality monitoring, combining compliance assurance with the opportunity for water companies to engage positively with the communities they serve.

Our impact-driven, non-profit consortium is dedicated to delivering:

Regulatory compliance
Transparency & accountability
Actionable insights
Innovation & accessibility
Scalability & future-proofing

Why use CMaaS with Additive Catchments

Our CMaaS solution is not just a service but a partnership for progress, grounded in five core
pillars designed to exceed compliance and foster environmental regeneration:

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Siemens

Our partnership with Siemens provides our robust digital infrastructure and advanced data science capabilities, facilitating real-time data collection and analysis for comprehensive monitoring. Their support is crucial in enhancing the reliability and scalability of our solutions.

"We at Siemens are proud to partner with Additive.earth in developing their innovative solutions. Additive Catchments will revolutionise environmental monitoring and water resource management. This game-changing ‘as a service’ model is set to significantly impact sustainability, efficiency, and decision-making for various industries."
Adam Cartwright - Global Industry Strategy Director, Water - Siemens
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AtkinsRéalis

AtkinsRéalis brings global expertise in infrastructure programme management, specialising in integrated catchment planning. Serving as the principal designer within our water quality consortium, AtkinsRéalis plays a crucial role in our innovative solutions.

"AtkinsRéalis is proud to partner with Additive.earth, who are at the forefront of the environmental monitoring era. Their innovative catchment monitoring solution will transform environmental monitoring and we see immense international market potential."
Gwion Kennard, Director of Digital Engineering, AtkinsRéalis
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Galliford Try PLC

Galliford Try is the largest construction contractor in the UK and plays a crucial role in our venture delivery. Their extensive experience in infrastructure projects ensures that our installations are executed proficiently and maintained to the highest standards. With their expertise, we can confidently implement and manage complex environmental monitoring systems that meet rigorous industry requirements.

"Galliford Try is thrilled to partner with Additive.earth. Additive is truly paving the way for a more sustainable future."
Steve Slessor, Managing Director,
Galliford Try - Environment Business
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Mendix

We are an ISV Partner of Mendix, a Siemens business, which supports the rapid development and deployment of our innovative solutions through their low-code platform, enabling us to leverage big data and IoT capabilities effectively.
"Additive.earth using our low-code platform, paves the way for many applications serving diverse sectors and use cases worldwide – ranging from water management and nature-based solutions to insurance. This approach optimises value and impact and we take pride in partnering with Additive on this essential journey."
Tim Srock, CEO, Mendix - A Siemens Business
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Meet our team

Sarah Smith

Marketing Director

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Sarah Smith

Marketing Director

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Sarah Smith

Marketing Director

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Sarah Smith

Marketing Director

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Success story

Monitoring Bristol’s River Frome to improve carbon reduction

In partnership with Wessex Water, we conducted a comprehensive catchment scale analysis of the twenty-mile-long River Frome in Somerset.  

This project aimed to evaluate the carbon footprint, cost and deployment speed of monitoring for Section 82 requirements, yielding impressive results: 

  • 75% carbon reduction 
  • 4x faster delivery 
  • 43% cost savings 

Talk to the team

Whether you’re in pursuit of new solutions, expert guidance or simply exploring how our technology can support your environmental goals, we’re here for you.

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