eco-cistem™ saves over 600,000 litres of water per annum at One City Park, Bradford
41 eco-cistem™ units installed. Estimated annual water savings: 600,000 litres.
One City Park is a landmark commercial office development in the heart of Bradford - marking the city’s first new office building in over 25 years. Completed in 2024 ahead of the Bradford City of Culture 2025 celebrations, the five-storey, 56,000 sq ft Grade A facility sets a new benchmark for sustainable design and digital connectivity.
The building has achieved:
Gold SmartScore certification* Gold WiredScore certification** BREEAM Excellent rating***
G&H was appointed by main contractor Caddick Construction to deliver full mechanical, electrical, and public health (MEP) design and build services. Their work included the integration of rooftop photovoltaic panels, air source heat pumps, and ten EV charge points - each contributing to the building’s high-performance credentials.To further reduce environmental impact, G&H specified and installed 41 eco-cistem™ units across the building - approximately 12 per floor. These innovative cisterns repurpose grey condensate water generated by the building’s air conditioning system, using it to flush toilets instead of drawing on mains water.
Each eco-cistem™ unit features:
- A patented 18-litre twin-chamber cistern
- 12-litre upper chamber for grey water storage
- 6-litre lower chamber for flushing
- Automatic prioritisation of grey water, with mains backup only when needed
This smart reuse of condensate water ensures consistent flushing performance while dramatically reducing freshwater consumption.
“The eco-cistem™ units are an ideal way to harness the grey condensate water produced by the air conditioning system,” says David Davis, Pre-Construction Director at G&H. “Using our bespoke calculator, we modelled annual condensate output, flush frequency, and water costs. The result was a projected return on investment in under three years - while supporting the building’s sustainability goals.”
Shown here as a single-unit install, eco-cistem™ is fully scalable - ideal for hotels, flats, and offices. Multiple units fit standard service voids, with a full design guide available at eco-cistem.com.
*Recognises smart buildings that deliver exceptional user experience, sustainability, and future-readiness
** Assesses digital infrastructure, resilience, and connectivity.
*** Measures environmental performance across a building’s lifecycle
