Northern Ireland Water is progressing work on several multi-million pound sewerage improvement schemes.
The water company is continuing work on the £4.1 million programme of work to upgrade the City of Lisburn’s sewerage system.
When complete, the entire programme of work will restore the quality and appearance of one of the city’s greatest natural assets, the River Lagan, to present day standards as well as catering for future housing and commercial development in the area.
Phase 1 of the programme, a £2.9 million replacement pumping station at Old Warren, was completed in October 2014.
Phase 2, at a total estimated project cost of £1.2 million, entails construction work to upgrade combined sewer overflows at various isolated locations throughout the city centre and the wider area. The contractor for Phase 2 is BSG Civil Engineering and work got underway in January 2015.
Work to replace an existing “combined” sewer with a larger one started at the end of June 2015 with the intention of being complete before the schools in the area start back on 27th of August. However, NI Water said that due to unforeseen circumstances, progress has been much slower than anticipated. There is an unexpectedly high concentration of existing utility services in the area and additional technical challenges and redesign work to minimise the risk of interrupting services to customers has delayed progress on the scheme.
Work to upgrade combined sewer overflows at isolated locations throughout the city centre and the wider area is progressing well with completion anticipated in October 2015.
The water company has also separately announced that a programme of sewer rehabilitation has commenced in the Portadown and Lurgan areas. The work is part of a much wider project which will identify defects in approximately 26km of Northern Ireland’s sewerage network and allow us to carry out any necessary repair or replacement work.
The project will be carried out in two stages: Stage one will involve investigative and design work, which includes pipeline / manhole cleaning and CCTV surveys, which will identify defects and define the work to be carried out in Stage two of the project. This work will be carried out during August and September 2015.
Stage two will involve the core sewer improvement work, which may include the installation of “liners” in existing pipelines or the laying of new replacement pipelines as well as other associated work.
Contractor Graham Construction is carrying out the work for NI Water. Where possible, “low-dig” techniques will be employed throughout the scheme, which will significantly reduce the amount of digging in the area and will ensure that repair work is completed as quickly as possible.
Once complete, the project will provide the local community with improved sewerage systems that are less prone to failure from blockages and sewer collapses. It will also increase the water carrying capacity of the existing infrastructure and reduce the risks of ‘out of sewer’ flooding and environmental pollution.
It is anticipated that the overall programme of work will be completed during 2016.
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