Rainwater harvesting system in commercial building

Non-Pressurised System

Our non-pressurised rainwater harvesting system is ideal for reducing mains water consumption in large commercial buildings. Instead of relying on traditional drinking water supplies for non-potable usage, our non-pressurised system is designed to save water, reduce carbon emissions* and save money on monthly water bills.

The non-pressurised system is ideal for buildings which have a high daily water demand and an abundance of plant space high up. A header tank arrangement ensures a consistent supply of non-potable water even in the event of power failure or low rainfall, making our non-pressurised system perfect for critical buildings such as, hospitals, schools, and government buildings.

Many mechanical and electrical contractors choose our non-pressurised system as it can supply large volumes of water to non-potable outlets, all whilst removing the need for costly booster pumps.

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12 month system warranty

All Stormsaver water reuse systems come with a 12-month warranty from date of commissioning.

How does the Rainwater Harvesting System work?

Rainwater is channelled from the roof into the storage tank passing an integrated filter to remove large debris, leaves etc. Water then enters the tank via an inlet calmer preventing disturbance to fine sediment on the base of the tank.

Excess rainwater flows out of an overflow which has a one-way valve and rodent protection; also skimming surface particles.

Inside the tank are sensors and a submersible pump which on demand take water from the cleanest part of the tank through a floating suction filter supplying filtered rainwater to the break tank.

This tank gravity supplies water to point of use. It is possible to have the break tank at any level in the building when combined with a booster unit sized for the specific building requirements.

During periods of low rainfall our mains water top-up provides a continuous failsafe supply. All products are compliant with the Water Supply (Water Fittings) Regulations 1999.

More than one break tank can be used in a system - our team can offer design assistance to ensure the most economic solution is applied.

Automatic Backwash Filtration

Maintenance made simple.

The Singlex non pressurised control panel includes our unique automatically backwashing fine filtration unit, which has been tested to a million backwashes. This is always recommended where the client requires the highest quality of water or where a UV disinfection unit is to be included within the system. This ensures that when the rainwater passes through the UV unit it is filtered to 35 microns, thereby reducing the amount of particle build up on the UV tube so that the disinfection remains effective.

Download Technical Data Sheet

Interested in our Non Pressurised Rainwater Harvesting System? Download our technical data sheet here.

Stormsaver Schematic - Non-pressurised Standard rainwater harvesting system

Stormsaver Rainwater Harvesting - non pressurised standard 2023

Stormsaver Rainwater Harvesting - non pressurised singlex 2023