Infrastructure Strategy Riverlands supply will become mandatory. Plans to build a treatment plant to remove Data collection on asset condition and performance is improving and is building into a manganese and iron will have to be upgraded for full treatment of bacteria and more accurate picture of where renewals works can be most effectively targeted. More protozoa at an estimated cost of $7.25M. resources will be allocated to pipe condition assessments to inform the renewals programme. Increased monitoring of the water quality supplied is also likely to be required. This might include installing chlorine monitoring points on the distribution system and taking 3.4 Earthquake risk additional tap samples for laboratory analysis. These additional costs are included in Major new assets will be built to the current high standards of earthquake resistance. the operational cost projections in the following section. Networks will be designed with increased inter-connections to allow flexibility of supply The Council will wait for direction from central government through the local District in the event of earthquake damage. Additional strengthening will be retrofitted for Health Board on whether water fluoridation is required. In order to be prepared for that critical assets and less resistant pipe materials will be replaced as part of the renewals situation, the Council will investigate the costs for installation of fluoridation dosing programme. The residual risk will be mitigated with financial contingencies to meet the plant and the ongoing maintenance at all treatment plants. The overall costs are not realistic costs of repair. The insurance sector has helped the council to calculate the likely to be very high. ‘maximum probable loss’ from the most recent experience around the country and is assisting the Council with its risk management plans. 3.2 Water availability and consumption 4. Table of major projects for this activity Universal metering and demand management techniques will be required at Havelock A brief summary of upcoming projects for this asset is shown below, and includes an and Renwick to prolong the current sources. The most recent census has shown that indication of the main reasons for the projects. Many of these have multiple drivers that growth in Picton has slowed significantly and a decision on metering can be delayed. span the challenges identified in the earlier sections of this chapter. For example, the Seddon and Renwick reservoirs provide a contact time for the disinfectant but also More active leakage detection, repairs and renewals are likely to be employed in all provide some security of supply and help to balance peak demand periods. areas to reduce wastage and demonstrate efficient use of the resource. It is probable that within the span of this strategy that metering will be adopted for all of the Council’s The key ‘drivers’ of investment are: water supply schemes. The introduction of advanced ‘smart meters’ and remote control of household • Growth — investment to provide additional capacity to cope with increased appliances will allow customers to have more choices about how they manage their demand for the service due to population growth or increased usage water consumption patterns. They will be able to use the ‘internet of things’ to reduce • Levels of service — investment to improve the service customers receive peak demands and this will allow the Council (and the community) to benefit from more efficient sizing of the supply infrastructure. • Renewals — investment to replace worn out or inefficient assets. 3.3 Ageing infrastructure There will be a relatively small but growing water pipe renewals programme over the Project next 10 years which will increase significantly over the following 20 years as the ageing Title pipe network begins to struggle to meet customers’ expectations. Critical pipes and materials that are expected to perform less well in an earthquake will be prioritised for replacement. Blenheim 2017 2.2 90 10 0 The asbestos cement water mains in Renwick have been analysed and found to have Taylor High deteriorated more quickly than anticipated. Money has been allocated for their Res. replacement and a renewal programme is being developed. Picton 2017 2.3 10 70 20 Speeds 2018-2028 Long Term Plan Page 192 etamixorppAderiuqeRetaD detamitsE tsoC m$revirD tcejorP)gnithgiew %( htworGrevirDtcejorP)gnithgiew%(fo leveL ecivreSrevirDtcejorP)gnithgiew %( laweneR