Appendix a Interim Midlands and GDA Water Resource Plan
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Water Supply Project Eastern and Midlands Region Appendix A Interim Midlands and GDA Water Resource Plan Interim Midlands and GDA Water Resource Plan Version 0.2 Date: October 2016 161027WSP1_FOAR Appendix A Contents EXECUTIVE SUMMARY .................................................................................................................................. 1 WATER SERVICES STRATEGIC PLAN ................................................................................................................. 2 IRISH WATER’S APPROACH ............................................................................................................................ 3 RISK OVERVIEW........................................................................................................................................... 4 PRODUCTION RISK ................................................................................................................................... 4 ABSTRACTION LICENCING .......................................................................................................................... 5 GROWTH ............................................................................................................................................... 7 CSO CENSUS DATA .............................................................................................................................. 8 INDUSTRIAL GROWTH ........................................................................................................................... 9 OBSERVED GROWTH FROM CONNECTION & DEVELOPER SERVICES AND NEW CONNECTION APPLICATIONS DATA ...................................................................................................................... 10 LEAKAGE REDUCTION ......................................................................................................................... 10 CSL / LEAK ALARMS .......................................................................................................................... 12 LEAD TIMES .......................................................................................................................................... 12 BENEFITTING CORRIDOR SUMMARY .............................................................................................................. 12 CIP 1: 2014-2016 ................................................................................................................................... 13 CIP 2: 2017-2021 ................................................................................................................................... 14 2021-2050 ......................................................................................................................................... 14 APPENDIX: SCHEMES TO BE RETAINED OR CONSOLIDATED ........................................................................ 15 161027WSP1_FOAR Appendix A EXECUTIVE SUMMARY The WSP Benefitting Corridor consists of 105 separate water treatment plants supplying over - 157MLD to their associated water supply zones. The objectives set out in the Water Services Strategic Plan are to reduce contamination risk and supply interruptions and support economic growth. In order to achieve these objectives, it is necessary to secure sustainable water sources, reduce leakage to an economic level and improve water quality standards. Irish Water has identified the sources and treatment plants at risk due to supply and treatment deficits and aims to focus on strategic water sources, reducing the number water treatment plants in the Midlands region from 105 to a more sustainable number of the order of 30% of this, by 2050. This represents a fundamental shift from discrete water supply zone operation to integrated water resource zone management. Irish Water will move towards the Water Resource Zone as the spatial unit to provide the strategic framework for managing water resources and demand, and investments. The definitions below are useful to describe the difference between approaches to water resource management. Water Supply Zone: “A Supply Zone is a geographically defined area within which water intended for human consumption comes from one or more sources and water quality may be considered as being approximately uniform.” (Irish Statute Book, 2014) Water Resource Zone: “The largest possible zone in which all resources, including external transfers, can be shared and hence the zone in which all customers will experience the same risk of supply failure from a resource shortfall.” (UKWIR, 2012) The overall aim is to reduce the risk of contamination and interruption through better management of strategic resources and increased interconnectivity of supply zones. The Water Supply Project Eastern and Midlands Region (WSP) provides all the supplies in the benefitting corridor with improved resilience and the ability to support demand growth over the longer term. By 2050 the demand in the benefitting corridor is estimated to reach 181MLD which cannot be met by existing sources and treatment capacity. The midland water resource zone requires an additional “backbone” supply of at least 56MLD by 2050. Without the WSP there is a significant risk that Irish 161027WSP1_FOAR Appendix A 1 Water will not be able to meet its WSSP objectives and that the cost of operations, maintenance and capital investment required to improve and maintain service levels will not be sustainable. This document sets out the Dublin Water Supply Area and Interim Midland Water Resource Plan at a high level, including the key steps and assumptions. This report is supported and informed by: 1. The WSP Eastern & Midlands Region Project Needs Report (Feb 2015) 2. The GDWSA Supply/Demand and Resilience Strategy Report WATER SERVICES STRATEGIC PLAN Ireland’s first integrated national plan for the delivery of water services, the Water Services Strategic Plan (WSSP) addresses six key themes: Customer service Clean safe drinking water Effective management of wastewater Protect and Enhance the environment Supporting social and economic growth Investing in our future The WSSP is an essential part of ensuring the availability of safe drinking water. It will ensure that we have an environment that is protected from the impacts of wastewater discharges, and that we have efficient modern systems that meet the needs of customers, contribute to economic growth and development, and provide value for money. The WSSP was developed following two phases of public consultation and underwent a Strategic Environmental Assessment (SEA) and an Appropriate Assessment (AA). The initial consultation was non-statutory and took place from July to September 2014. As part of the second statutory phase of public consultation, Irish Water invited submissions on the Draft WSSP together with the SEA Environmental Report and Natura Impact Statement (AA process) from the 19th February to the 17th April, 2015. Delivering on the WSSP over the next 25 years will require an unprecedented transformation in how the industry operates and increased levels of investment. The WSSP sets out the challenges we face as a country in relation to the provision of water services and identifies strategic national priorities. It includes Irish Water’s short, medium and long term objectives and identifies strategies to achieve these objectives. 161027WSP1_FOAR Appendix A 2 The key elements of the Water Services Strategic Plan (approved by the Minister for Environment, Community and Local Government in October 2015) relating to water supply are: Plan for strategic development of water supplies that comply with water quality standards and build in security of supply; protect our water supplies in accordance with international best practice; eliminate Boil Water Notices other than from short term extreme events. IRISH WATER’S APPROACH By adopting a single national best practice approach to assessing and managing drinking water supplies, Irish Water has shown beyond any doubt that drinking water quality across the country has been seriously compromised by a systematic failure in how water services have been delivered and funded over several decades. This work is based on the recommended World Health Organisation (WHO) approach to safe drinking water supply using a ‘source to tap’ risk based methodology which analyses risk rather than waiting for sampling failures. Irish Water’s work in the past two years has indicated serious compliance challenges ahead for hundreds of drinking water supplies as a result of the first ever comprehensive evaluation of the performance of Ireland’s drinking water production plants including those in the GDWSA and Benefiting Corridor. The historic water quality monitoring regime was systematically inadequate to identify the scale and range of issues that need to be addressed in order for be a reliable basis of public health assurance in drinking water. Treatment plants and networks were not upgraded or maintained because the money and resources were not available to do so. Many are therefore no longer fit for purpose or in need of significant investment. Each drinking water scheme on the EPA list is considered to be a high risk of contamination. The current EPA RAL lists 119 schemes nationally, providing water to 803,000 Irish Water customers, which are in need of urgent attention and form the basis for Irish Water’s current investment plan. Irish Water has now completed its risk based assessment of all public water supplies that shows that the real