This report details performance against the Water Administration Ministerial Corporation (WAMC) Output Measures for 2017-18. This is a partial report, with a final report expected to be published in early 2019 upon receipt of outstanding output measures data. In our 2016 Final Report on WAMC's maximum prices we decided to require WAMC to report against a set of output measures for each year of the 2016 Determination period beginning 2016-17. These output measures relate to a range of activities including surface water and groundwater quantity and quality monitoring, floodplain management plan development and compliance, customer and billing management.