TOILETS

Our Ifö Cera ES4 toilets are the epitome of robust ecological design. The ES4 is the most water-efficient toilet on the market yet it doesn't even have a dual flush. Dual flush toilets make sense, but they have their problems: choose the wrong button and you may have to flush again. Furthermore, because the flushing mechanism uses valves rather than the traditional siphon, the toilet is more likely to jam or leak in the long term.

The ES4 is a single flush siphonic toilet that can never leak - and it uses only 4.5 litres per flush. It can neither be misused nor go wrong without you noticing. The make is Swedish but it was designed by a British company, Elemental Solutions. Their website www.elementalsolutions.co.uk is a great source of information on water efficiency and natural sewage systems.

The ES4 is available through the Green Building Store on 01484 854898 or www.greenbuildingstore.co.uk.