GWA GROUP LIMITED. revenue for the last year amounted to 411.80 M AUD, the most of which — 411.84 M AUD — came from its highest performing source at the moment, Water Solutions, the year earlier bringing 418.72 M AUD. The greatest contribution to the revenue figure was made by Australia — last year it brought GWA GROUP LIMITED. 336.35 M AUD, and the year before that — 340.62 M AUD.