
Why Choose Us
Agile Engineering Backed by Proven Experience
At 4D Ltd., we’re redefining engineering consulting no overcharging, no fluff, just smart, efficient solutions. With decades of hands-on experience, we deliver clear, competent, and cost-effective engineering support for clients in the wastewater and process industries. Whether you’re tackling a small upgrade or a full-scale project, we’re the partner you can count on.
HISTORY
Founded in 2020, 4D Ltd. Brings many years of experience from industrial sectors to 3-waters. We’ve distilled that knowledge into a nimble, reliable consultancy that works hand-in-hand with operators and project managers alike.
Process Design & Project Management
From concept to commissioning, we guide your project every step of the way.
Wastewater Treatment
Practical, proven solutions tailored to your treatment needs.
Engineering Drawings
Clear, accurate, and build-ready documentation.
Operational Excellence
Helping your systems run smoother, safer, and more efficiently.
Meet Our Team

Our Strengths in Action
Hear From Our Clients
Testimonial

We brought 4D Ltd. on for a wastewater optimisation project and were impressed by how quickly they understood our system. Their team was responsive, down-to-earth, and delivered exactly what we needed—on time and without overcomplicating things.