Outdoor water management systems determine where rainfall goes once it reaches a roof or paved surface. Collection and storage can retain water for later use; drainage carries excess water to an approved outlet. Infiltration lets it enter the ground where soil and site conditions allow. This category includes FlowPave Sett by Firth, a permeable paving option that makes the finished outdoor surface part of the wider water-management plan.

Water Management Systems

New Zealand rainfall patterns and council stormwater requirements influence the choice between infiltration, storage and discharge. Permeable paving such as Firth’s needs a suitable base design, so its role should be resolved before paving levels are fixed. A driveway or courtyard also needs a plan for rainfall that exceeds the system’s capacity. The useful starting point for water management systems is a site plan showing where water arrives and where it can safely go, rather than a product choice made in isolation.

How does permeable paving affect runoff?

Water passes through the paving surface into a designed base rather than running directly to a drain. The designer needs to confirm whether it will soak into the ground or need an outlet.

When is a smart water management system useful?

Sensors and controls can help where stored water or irrigation needs active management. The system’s measurement or control needs should be defined, along with power requirements and access for servicing.

What should be resolved before installation?

The stormwater design and any council requirements need to be confirmed before outdoor levels are finalised. Any intended overflow route should stay clear of buildings, and drainage components need to remain accessible.