Football Club ONT Opeinde

Leading sustainability from the locker room.

Amateur football club v.v. ONT, based in the Frisian town of Opeinde, is home to 600 members and operates an intensive facility with 63 showers. Like many sports clubs, water use was high, around 700,000 liters per year, driven largely by showers in locker rooms. Determined to reduce its environmental footprint, the club set out to rethink how water was used behind the scenes.

With water prices relatively low in the Netherlands, traditional efficiency measures alone could not deliver meaningful savings or a viable business case. At the same time, the club wanted to take responsibility for reducing potable water use without compromising hygiene, comfort, or daily operations.

The solution.

The football club installed a Hydraloop water recycling system that collects, treats, and reuses shower water for toilet flushing. The impact was immediate and measurable. Annual water consumption dropped from approximately 700,000 liters to no more than 400,000 liters.

In 2023, v.v. ONT was officially recognised as the ‘Dutch Sustainable Sports Facility of the Year’ by NOC*NSF, praised for its clear vision, measurable results, and role-model impact.

Project information

• Opeinde, the Netherlands
• 600 members, 3.000 weekly visitors

Installation details

• Devices: 6 x H300 Cascade
• Potential annual savings: 788.400 liters | 208,273 US gallons
• Treatment capacity: 2160 liters | 570 US gallons per day

Usage details

• Collection sources: Showers
• End uses: Toilet flushing

For many clubs that will need to renovate their facilities from the 1960s and 1970s in the coming years, Hydraloop presents a tremendous opportunity. We want to be an example for sport facilities across the Netherlands.

– Jeen Visser, Chairman football club vv ONT