GWA GROUP LIMITED. revenue for the last year amounted to 413.50 M AUD, the most of which — 413.49 M AUD — came from its highest performing source at the moment, Water Solutions, the year earlier bringing 411.84 M AUD. The greatest contribution to the revenue figure was made by Australia — last year it brought GWA GROUP LIMITED. 342.26 M AUD, and the year before that — 336.35 M AUD.