Based upon the IWA performance indicator system benchmarking projects for water supply enterprises have been carried out in Bavaria (Germany) and Austria. Due to the similar water supply structure of these neighbour countries, a cross-border co-operation was defined to develop a compatible system and to conduct trans-national comparisons. In this paper, the two projects and the cross-border co-operation are described. First comparison results are presented for key indicators showing a good overall performance in both projects, especially with reference to international levels.

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