Until the end of January, the scheme had delivered almost 31 million cu m of water to 96 shareholders - about 50% more water than the same time last season.
Of those, there had been issues at six take-off points throughout the scheme, with pressure or flow below optimum levels for the farm, but water still available.
The Otago Daily Times had been alerted to issues with the scheme, suggestions it was not coping with demand, and that at least one farmer was threatening legal action.
Company chief executive officer Robyn Wells said one farmer shareholder had contacted the company through a solicitor, but that did not mean issues with the scheme could be resolved any quicker.
''We are all in this together and it is our culture to get on and fix any issues in an open and transparent manner, which is what we are doing,''.
The unprecedented demand since about mid-September because of an extended dry spell, which led to a drought declaration, had caused problems at six out of 150 off-takes at either the ends of lines or high points.
The scheme from September onwards had exceeded all previous records. By October, it had delivered 8.31 million cu m of water (the highest previous was 3.5 million in the 2011-12 season).
By the end of last month, the cumulative total was 30.96 million cu m (compared with the previous highest of 20.45 million in 2010-11) - more water in five months than in any full nine-month season.
It was expected there would be similar demands this month and into the next. This year was the first time in its nine-year history the scheme had faced such a major test.
''What is unprecedented is the length of demand this season,'' Ms Wells said. Generally, demand gradually increased, but this year had climbed steeply and continued to rise, she said.
''What we are experiencing now are some hydraulic inefficiencies at the high points and ends of distributions lines.''
The company, with an experienced hydraulic engineer on staff, was determining the cause and had an operations improvement plan under way.
When improvements could be made immediately, they were being done.
Others were being considered as part of the design of stage 2 of the scheme, proposed to be in operation from September 2016.
To assist those affected, the company had asked for voluntary reductions in water take.
The neighbours of one farmer had voluntarily reduced their allocation by 10% to try to improve performance on one off-take.
Farmers had also been asked to pay special attention to irrigation management and scheduling to capture any efficiencies which could potentially help others.
The farmer believed to be considering legal action was contacted by the Otago Daily Times, but did not want to named or comment.
