Rainwater harvesting and drainage

Rainwater harvesting collects surface water for reuse. The drainage design may include a tank, filter and connection to the building. We install the tank and associated drainage to design so the system can be connected by the M&E contractor.

Rainwater harvesting and drainage usually becomes urgent when recurring symptoms begin affecting programme confidence, compliance, or delivery reliability.

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When to consider this guidance

Teams usually investigate rainwater harvesting and drainage when early warning signs start affecting reliability, compliance, or project timelines. This is often the point where decision makers move from observation into scoped technical action.

What often triggers action

The symptoms below are the most common triggers we see before diagnosis and repair planning.

• Rainwater tank in design
• Underground tank and excavation
• Inlet and overflow drainage
• Connection to building services
• We deliver tank and drainage

How this is usually carried out

We work from your design. We excavate, install the tank and connect the drainage.

Practical steps to a reliable outcome

We deliver rainwater harvesting infrastructure to design. We leave ready for the M&E contractor to connect.

What affects cost and complexity

Cost and complexity usually depend on access constraints, total scope, existing condition, and whether related works need to be coordinated in the same programme window.

How we work through the job

We keep delivery structured so scope, sequencing, and sign-off remain clear.

1. Step 1: Initial assessment

   What this step delivers: Root cause and scope are confirmed.

2. Step 2: Method planning

   What this step delivers: Practical repair strategy is agreed.

3. Step 3: Delivery and verification

   What this step delivers: Work is completed and validated.