Water pipe renewals earn the city $96k
Porirua City will be refunded nearly $ 100,000 after saving millions of litres of water.
The latest water account from Greater Wellington Regional Council includes a credit of $96,833, thanks to measures put in place in the past three years.
The council reduced water pressure in the CBD, upped its leak detection technology and water flow monitoring, and since 2008 introduced $1 million per annum for pipeline renewals.
‘‘The council decided instead of spending money on maintaining old leaky pipes, it was better to invest in new assets that are better for the environment and the back pocket,’’ says water and drainage engineer Des Scrimgeour.
The measures taken in the past three years means the 2009 forecasted cost of bulk water for 2010-11 is now under budget by about $400,000, and maintenance costs have dropped by $200,000. These savings will be factored into the planning on infrastructure spending for the next 10-year plan.
Mayor Nick Leggett says the financial saving is fantastic and evidence of a job well done by the water assets team.
With the next round of longterm planning due to start later in the year, he is confident the council will continue to include pipeline replacement as a priority.
‘‘ The council recognises the importance of upgrading the city’s core infrastructure, and this year $2 million was included in the annual plan for sewer pipe renewals. Whether it’s drinking water, wastewater or stormwater – all three networks need sound management and maintenance.’’
Water and drainage manager Phil Nordberg says keeping a close eye on the system and checking discrepancies when they arise has saved a lot of waste.
‘‘It’s important to be proactive to find the leaks,’’ he says.
‘‘ Come July 20, instead of writing a cheque to Greater Wellington we will be receiving one.’’