Water efficiency means promoting sustainable water use using solutions enabling comprehensive reductions in wastage of domestic water. Water-efficient measures achieve substantial savings in water quantities, costs and energy.
While both terms promote the responsible use of water, water efficiency is different from water saving.
Water savings are efforts to reduce the direct consumption of water. In households, turning the tap off while soaping your hands, using dishwashers and laundry machines only when full, and the fixing of leaks, are everyday examples of measures for saving water.
Water efficiency, on the other hand, aims at sustainable water use to a wider extent. The idea is to reduce the unnecessary consumption of water and make the use of water more sustainable by focusing on responsible solutions for the use and supply of water.
In other words, water efficiency is reducing the water used by water functions, without compromising the comfort and convenience of water supply. For example, technology that measures water consumption, water-saving fittings and property environment certification are means for promoting long-term water efficiency.
Environmental certification for properties. Numerous green construction certificates take water efficiency goals into account as part of sustainable construction. Ecofriendly construction is a sustainable trend, the focus on which will increase in the coming years.
Correct water pressure level. A significant cause of water wastage is the supply water set at an excessive pressure level. The water pressure is often set too high in Finnish apartment blocks, and this causes the unnecessary wasting of water. Water flows should be set at a sustainable level, so water also flows smoothly to the highest floors.
Technology to measure the consumption and use of water. Once real-time data on water consumption is available, this data can be used to implement water-saving measures that will have a permanent, positive impact on reducing water wastage. An example being a small water leak not being noticed in time causing costs in the thousands of euros.
Water-saving water fittings and appliances. Water-saving shower heads and dual-flush toilets can save up to dozens of litres of water every day per end user.
Energy-efficient household appliances. An everyday example of water efficiency is to invest in technology that avoids the unnecessary wasting of water.