I misread a graph which I published last week. Hamish Rennie picked me up pointing out my error and wrote:
I agree with your concerns about water reforms, although I think you have misinterpreted the graph.
That’s why this graph which was published recently which shows that Christchurch City Council’s wastewater pipelines are assessed as “highly reliable”.
The ‘highly reliable’ relates to the adequacy of the data – for which definitely take credit. The graph actually says that, based on highly reliable data, more than 10% of CHCH water systems are in poor condition. The good thing is that we know how much, those with less reliable data might be much worse off than they think they are.
I seem to recall when the Council undertook a study of the water system when I was at the table that 15% of the water system leaked, which I presume is “poor condition”. If my memory is correct then things are getting better post earthquakes.