Communal & Residential Active Attenuation

Rainwater captured from the roof area is transported to a central location via separate pipework.

Roof runoff and surface water runoff are transported in separate pipework to avoid cross-contamination from the more heavily polluted surface water.

The rainwater is transported to a central storage location. All rainwater will go through a pre-tank filter to remove large debris prior to entering the tank.

Active Attenuation turns the rainwater harvesting storage and attenuation capacity into one capacity.

This is achieved by intelligent monitoring of incoming weather patterns. If the control panel detects a large storm is incoming and more capacity is required, it will reduce the level of stored water to an optimal level.

This is achieved via a fail-safe valve arrangement or booster set, depending on the site requirements.

When a demand for non-potable water is detected in the building, submersible pumps will boost the rainwater from the central storage tank to multiple smaller break tanks around the development.  

Environmental benefits

• Reduce water consumption in new homes.
• Reduce flood risk within the wider community.
• Prevent surplus stormwater from entering the combined sewer system.
• Lower the risk of untreated sewage overflowing into natural water courses.
• Future-proof homes against the impacts of climate change.

Many housing developments require sustainable drainage systems (SuDs) to be installed as part of planning conditions. Typically, this involves installing large swales and ponds to achieve attenuation capacity. These ponds and swales take up valuable space in the development.

Active Attenuation can reduce pond sizes, ensuring compliance with biodiversity net gain restrictions, while supplying sustainable water to homes and creating more usable space for developers.

Active Attenuation produces a supply of recycled rainwater. Reclaimed rainwater can provide a sustainable water supply for many common uses of water within domestic properties, including…

• Toilet flushing.
• Garden irrigation.
• Laundry.

Ideal project types:

• Housing developments.
• Student accommodation.
• Residential apartments.
• Hotels.