Home Solution Aqua Gratis domestic greywater recycling system
United Kingdom

Aqua Gratis domestic greywater recycling system

Wastewater treatment and reuse

Reducing domestic water wastage and energy consumption through greywater recycling.

Contact

Logo

Cascade Water Products Ltd

Company Established Year

Since 2015

Who is this solution for

Business, Govt

Info

Available

To sell

Project Status

In commerce

Looking to expand internationally

Yes

Doing business in

worldwide

Awards and certifications

Scottish EDGE Grant Winner

2019

warded £75,000 for development of Aqua Gratis as a circular, low-carbon technology.

VIBES Scottish Environment Business Award – Good Practice

2020

Lauded for environmental innovation and water-energy nexus efficiency.

Solar Impulse Efficient Solution Label

2022

Recognized Aqua Gratis as a sustainable, cost-effective greywater reuse system.

Product description

Aqua Gratis domestic greywater recycling system is a revolutionary solution developed by Cascade Water Products Ltd. to address the pressing issue of domestic water wastage and energy consumption. This patented micro greywater reuse technology captures and filters water from showers, baths, and washing machines, storing it for reuse in flushing toilets. The system is equipped with advanced features such as a smart monitoring panel, leak detection sensors, and a self-cleaning filter to ensure optimal performance and minimal maintenance.

Compliant with British Standards BS EN 16941‑2:2021 and BS 8525, Aqua Gratis offers significant benefits to households, developers, water utilities, and sustainability projects. By delivering up to 45% potable water savings and reducing domestic sewage volumes, it contributes to environmental conservation and energy efficiency. The system is carbon-negative in lifecycle analysis, making it a sustainable choice for new builds, student housing, and social housing projects.

With its innovative design and eco-friendly features, Aqua Gratis is a game-changer in the field of domestic water recycling, supporting net-zero housing ambitions and promoting a more sustainable future.

Key characteristics and environmental benefits

  • Patented micro greywater recycling technology
  • Smart monitoring panel and leak detection sensors
  • Self-cleaning gravity-fed filter for minimal maintenance
  • Up to 45% potable water savings and reduced sewage volumes
  • Carbon-negative lifecycle analysis
  • Compliance with British Standards for quality and safety
  • Suitable for new builds, student housing, and social housing
  • Supports developers, water utilities, and sustainability projects
  • Contributes to net-zero housing ambitions
  • Promotes environmental conservation and energy efficiency

About the Company

Cascade Water Products Ltd is a Scotland-based environmental enterprise developing domestic greywater reuse solutions. Founded in 2015 by Carolyn Hogg, the company created the patented Aqua Gratis micro-greywater system, designed to capture shower and bath water to flush toilets—saving up to 45% of potable water consumption for households. This low-energy, compact solution is easy to install and maintain, combining smart sensor monitoring with self-cleaning filters. Cascade engages with housing developers, social housing, and water utilities and is part of the Solar Impulse World Alliance as a certified Efficient Solution. Backed by Innovate UK, Scottish EDGE, and Horizon 2020 grants, Aqua Gratis contributes to achieving SDG 6 and 7, supporting water efficiency, circular economy, and CO₂ reduction through infrastructure demand reduction.

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