Inspire : Public Works Sept Oct 2012
41 “It has rain sensors and fow sensors and can tell if there has been a break in a system. It can shut that line down so we don’t waste any water.” Starting with premier and local sports felds, the city has been upgrading several of its parklands to central control systems with each annual budget and are about two thirds of the way through. “We had the Glenelg to Adelaide parkland water reuse scheme, and we were able to put a fair amount of the high water users onto the re-use scheme, including a couple of sporting felds and a few large parks,” Kirwan says.“We also trial new ways of saving water, such as sub-surface irrigation.” In implementing its IPOS, the City of West Torrens makes no distinction between bore, reclaimed and mains water, treating all water as a precious resource. It took a single watering season of working with the code for the City of West Torrens to streamline its systems and work methods as well as managing its own and the public’s expectations of the changes. “I would defnitely recommend IPOS, especially from an operational point of view,” Kir wan adds. “It’s commonsense and, although it’s done from a South Australian point of view, someone from interstate could take the ideas on board.” ••• SIX steps to implementing IPOS 1 Implement a strategic approach to irrigation management 2 Ensure systems are functioning properly with periodic system audits and regular maintenance 3 Implement a horticultural maintenance program to maintain soil structures and turf nutrient requirements 4 Use long-term climatic data to set the monthly base irrigation schedule 5 Amend the base irrigation schedule on a regular basis to account for climatic variance from the long-term average in any given season 6 Monitor irrigation consumption against requirements and report on irrigation e ciency and turf quality CONTINUE THE CONVERSATION Have your say on this story. Go to http://goo.gl/zjcRG to comment on this article. MAINS WATER ALLOCATION ALLOCATION FOR THE 2011/12 WATERING SEASON (WS): 38,760 KL A DECREASE OF 9% ON THE 2010/11 WS FOUR-YEAR AVERAGE: 43,74 4 KL MAINS WATER CONSUMPTION ACTUAL CONSUMPTION: 36, 214 KL A DECREASE OF 1% ON THE 2010/11 WS FOUR-YEAR AVERAGE: 41, 278 KL IRRIGATION EFFICIENCY IRRIGATION EFFICIENCY INDEX 2011/12: 93% FOUR-YEAR IRRIGATION EFFICIENCY: 94% IRRIGATED PUBLIC OPEN SPACES AREA: 11.8 HECTARES DECREASE OF 14% ON THE 2010/11 WS AVERAGE OF 12.7 HA OVER FOUR YEARS. VARIANCES ARE ATTRIBUTED TO RECLAIMED WATER USE.
Public Works July Aug 2012
Public Works Nov Dec 2012