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A. Lough Ree Abstraction (Only) involves water abstraction from Lough Ree, water treatment and pumping facilities near Lough Ree and pipelines approximately 104km in length to convey treated water to the Dublin Region. This option also has the capability of supplying treated water to Midlands Local Authorities along the pipeline route. |
B. Lough Derg Abstraction (Only) involves water abstraction from Lough Derg, water treatment and pumping facilities near Lough Derg and pipelines approximately 122km in length to convey treated water to the Dublin Region. This option also has the capability of supplying treated water to Midlands Local Authorities along the pipeline route. |
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C. Parteen Basin (Abstraction near Parteen Weir) involves water abstraction from Parteen Basin, water treatment and pumping facilities near Parteen Basin and pipelines approximately 158km in length to convey treated water to the Dublin Region. This option also has the capability of supplying treated water to Midlands Local Authorities along the pipeline route. |
D. Lough Ree and Lough Derg Abstractions (Phase 1 Abstraction Lough Ree followed by Phase 2 Lough Derg) involves water abstraction initially (Phase 1) from Lough Ree, water treatment and pumping facilities near Lough Ree and pipelines approximately 104km in length to convey treated water to the Dublin Region. A second phase (approximately 10 years later) involves abstraction from Lough Derg, treatment near Lough Derg and pumping treated water via pipelines 73km in length to a booster station located approximately midway between Lough Ree and the Dublin Region. This option also has the capability of supplying treated water to Midlands Local Authorities along the pipeline routes from Lough Ree to the Dublin Region and from Lough Derg to the booster station location. |
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E. Lough Ree Abstraction and Supplementary Storage (Use of storage in former (cutaway) bogs to supplement water supply from Lough Ree in dry years) involves raw water abstraction from Lough Ree, pumping of raw water to a “cutaway bog” site (owned by Bord na Móna) near Rochfortbridge Co. Westmeath, raw water storage facilities, water treatment and pumping facilities at the site and pipelines to convey the treated water to the Dublin Region. Overall raw water and treated water pipelines are approximately 104km in length. Storage facilities will accommodate up to 4 months average supply requirements. This option has the capability of supplying treated water to Midlands Local Authorities from Rochfortbridge. |
F. Lough Derg Extraction and Supplementary Storage (Use of storage in former (cutaway) bogs to supplement water supply from Lough Derg in dry years) involves abstraction from Lough Derg in combination with bog storage. Two bogs have been identified as suitable for storage, one near Rochfortbridge, Option F1, and the other near Portarlington, Option F2. |
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G. Impoundment involves the abstraction of raw water from Lough Ree during higher flow months, pumping of raw water via pipelines approximately 113km in length to an impoundment location in the Dublin/Wicklow mountains, water storage and treatment near the impoundment site and delivery of treated water to a designated termination point near Dublin. This option has no capability for supplying treated water to locations en route between the Shannon and Dublin. This option could also use Lough Derg as its source of raw water. |
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Of the 10 Water supply options that were being considered, 7 (A to F) had River Shannon lake storage locations as their primary water supply source.
Two of the River Shannon abstraction options, E and F, combined abstraction with storage in aquifers and former/cutaway bogs. These were being examined in conjunction with Bord Na Móna, who own and operate the sites
All River Shannon water supply options would involve the construction of pumping facilities to abstract water, and treatment plants and pipelines to bring water to consumers in the Dublin Region. Options A - F have the potential to supply treated water to other Local Authorities en route between the River Shannon and Dublin
For more information on the regulations governing flow in the River Shannon please click here
The current studies, in relation to the long-term water supply needs of the Dublin Region (Water Supply Area), have been underway since 2004. Over the intervening period, two phases of public consultation have taken place (2006 & 2008/09) under the Strategic Environmental Assessment (SEA) process, regarding potential new source options for meeting long-term supply needs. The (2008) draft Plan and Environmental Reports, involving 10 potential new water supply options, were tabled for public consultation under the SEA (Phase 2) process from November 2008 to Feb / March 2009. Consultations with stakeholders during this period were extensive and feedback from the process has now been incorporated, as appropriate, into the current recommendations. A Non Technical Summary of the recommendations (and a Power Point Presentation) is now being made available to stakeholders and the general public, via this dedicated project website, in order to provide an interim update on the current status of the project (July 2010).
For more information on the recommended option please click here