Rainwater harvesting systems for businesses and office buildings
In commercial buildings, most water is used for toilet flushing, cleaning, and outdoor purposes – where drinking water quality is not necessary. Therefore, the potential for reusing rainwater is significantly greater than in a private home, and the payback period is correspondingly shorter.
What is a commercial rainwater harvesting system?
A rainwater harvesting system collects rainwater from the building's roof, filters it, and stores it in an underground tank. From there, the water is pumped to the tap points where drinking water quality is not required – typically for toilet flushing, cleaning, and outdoor irrigation. If the tank runs dry, the system automatically switches to drinking water through an approved safety device, so operation never depends on the weather.
Businesses and offices can reuse up to 80% of their water consumption, while for private households, it typically lies around 50%.
In commercial buildings, the potential is greater than in a residence for two reasons: the roof area is significantly larger, so more water is collected, and consumption is concentrated on precisely the purposes for which rainwater may be used. An office building or a warehouse uses very little water for bathing and kitchen purposes, and much more for toilets and cleaning.
From rain on the roof to water in the building
A complete system that collects, filters and stores rainwater, allowing it to be automatically reused in the building. If the tank runs dry, the system automatically switches to mains water.
Summary
Rainwater is collected from the building's roof surface via the downpipes.
Filtering
Coarse filter and fine filter remove leaves and particles.
Storage
The water is stored in an underground tank, sized according to roof area and consumption.
Application
Used for toilet flushing, cleaning, and outdoor purposes in the building.
Do you need more capacity?
The tank sizes on the website are primarily aimed at private customers and smaller systems. For businesses, we can supply larger and individually dimensioned rainwater harvesting systems, adapted to the building's roof area, water consumption and needs.
Contact us to find a good solution for your business.
What a rainwater harvesting system means for the building's operation
Lower operating expenses each year
You pay neither water charges nor discharge fees for the rainwater you collect yourself. The savings are on the operating budget year after year — not just the first.
Speech for the sustainability report
The reduced drinking water consumption can be quantified and included in environmental documentation, certification, and reporting to the board or owner.
Approved for sewage and legal
The systems have physical separation from the drinking water installation with approved backflow prevention — a requirement in commercial buildings.
Relief during cloudbursts
Large roof areas drain large amounts of water in a short time. The tank retains the rainwater and reduces the strain on the sewer on the property.
Businesses and offices can reuse up to 80% of their water consumption
In office buildings, the majority of water is used for toilet flushing and cleaning — areas where drinking water quality is not necessary. Therefore, the potential savings are significantly greater than in private homes, where savings typically amount to up to 50%.