In recent years, Fonterra has expanded a number of their dairy manufacturing sites to increase the overall milk processing capacity of its New Zealand operations.
Each year ESR surveys all networked water suppliers that provide water to more than 100 people for information on their achievement of the Drinking-water Standards for New Zealand (the Standards).
This paper reports on selected water-related exposure factors for New Zealanders, derived through a Ministry of Health-funded project to develop exposure factors for assessing the risk from hazardous substances and products.
The study found the main reason for zones failing to meet the E. coli and chemical requirements of the Standards was too many transgressions (maximum acceptable value exceedences). Almost all zones with an excessive number of transgressions, for both E. coli and chemicals, served populations in the 501-5000 bracket.
This study demonstrates that AGSs developed for wastewater treatment can effectively remove micropollutants without compromising the C, N and P removal performance.
This paper will review the performance of the GRP jacking as compared to the theoretical performance including verification testing of the pipes.
This paper will present the reasons why New Zealand should be embracing the use of product-based delivery and will draw on 10 years’ experience gained from working with Anglian Water, Yorkshire Water and United Utilities in developing their Product-based delivery approaches.
This paper will highlight the most recent, as well as upcoming, developments in spiral wound liners that have furthered their capabilities for the renewal of deteriorated underground conduits.
This paper outlines some of the implications that the Freshwater NPS may have on the three waters sector. It then describes the Ministry’s project, as part of the wider guidance and implementation programme, specifically targeted to help territorial authorities as water users, land managers and operators of three waters infrastructure.
This paper will discuss these four priority areas and how renewable energy technologies identified as part of the study rank at an Australian and international water sector level, and how the New Zealand water sector could potentially benefit from these opportunities.
This paper covers retrofit elements that are assessed and upgraded to provide a seismic resilient reservoir system including walls – hoop strength, roof uplift, floor slab capacity, overturning, roof capacity, and high level geotechnical considerations.
This paper reports the development of an economic appraisal tool for Christchurch City Council (‘Council’) to interrogate and evaluate stormwater management approaches, inform climate adaptation and help plan significant infrastructure delivery.
Through knowledge of the requirements of the standards and the significance of consistency of raw materials the consumer will better be able to evaluate the long term performance and overall cost of asset ownership of GRP piping systems.
In 2015 New Zealand committed to a reduction in carbon footprint in agreement with the Kyoto accord requiring a reduction in Net carbon of footprint of around 30MtCO2-e/yr from 2014, by 2030. (Ministry for the Environment, 2016).
This paper covers guidelines for water suppliers to develop Safety Plans for Backflow Protection using risk assessment to determine the level of backflow protection required.
In this paper, literature regarding modelling water treatment plant performance or a similar field of study has been assessed with the goal to establish the current state of creating an overall predictive water treatment plant model and identify knowledge gaps.
This paper summarises the evolution of IWN technologies from simple, static and reactive systems to comprehensive event management solutions for water utilities.
The Rosedale SMA is a highly pumped network conveying wastewater flows up to the Rosedale Wastewater Treatment Plant located at elevation RL 45 metres. The model has become a very powerful planning and operations decision making tool.
The paper will look globally at what other communities are doing both reactively and now proactively to face the uncertainty associated with climate change, population growth, sea level rise and creating liveable cities in the coastal margins.
This paper presents two different project examples where hydraulic, ecological, landscape and other multidisciplinary design elements have been successfully balanced, and identifies the key project features that can be applied in other waterway designs.
The media used in bioretention influence hydraulic, chemical and plant growth performance. Resilient media have characteristics that resist or buffer changes to maintain design performance over the life of a device. We followed the performance of Wynyard Quarter raingardens installed between 2007 and 2013.