Mace were finding the completion of the water system at Park House difficult as the Contractors were unable to locate a commercial water softening device that met the requirements of the current Water Supply (Water Fittings) Regulations.The background is that the building, comprising Commercial and Residential units, was specified to incorporate WRAS approved Water Softeners in accordance with Thames Water requirements. At the time of construction, no WRAS approved item was on the market resulting in the installation of non-compliant units.RAH Consultancy were engaged to review the design of the installed units and advise a way forward. RAH based their review upon the requirement for a Water Regulations Compliant Water Softening device. Our work included;Sourcing of such a device (none currently available) Liaising with the manufacturer/installer Production of layout drawings Co-ordination of the Technical Submittals Liaison with Thames Water Regulators The organisation of factory testing of the proposed units Undertake site inspections of the system at regular intervals up to the acceptance and signing off of the installations by Thames Water Regulators General advice in dealing with Thames Water Utilities Water Regulations Department. The units are now successfully installed and, following an inspection by Thames Water Regulators, a letter granting consent and a Certificate of Compliance have been issued.The contract for the manufacture and installation of the water softeners was placed with Ward Commercial Water Treatment, Essex. The units were designed in consultation with RAH Consultancy and installed as a triplex combination.