In this video, I walk you through the complete plumbing system in my Toyota HiAce campervan, showing exactly how I designed and installed a simple, reliable setup that’s been proven on the road.

This walkthrough focuses on practical decisions, not overcomplicated systems. I explain why each component was chosen, how everything connects, and what I’d change if I were starting again — all from the perspective of a real DIY build.

In this plumbing system walkthrough, I cover:

• Fresh water tank layout and hose routing

• 12V water pump setup and placement

• Sink and tap install basics

• Drainage and grey water management

• Tips to keep your plumbing simple and easy to maintain

If you’re building your first campervan, or you’re stuck trying to plan a plumbing system that won’t leak, rattle or drive you mad — this video will give you a clear starting point and help you avoid common mistakes.

👉 For a full step-by-step breakdown of the entire van build process, check out my Van Conversion Guide, where plumbing fits into the bigger picture alongside electrical, insulation, flooring and more.