Ireland - Services


Wastewater Services

RPS has significant experience in the development of public wastewater infrastructure.

RPS has in-house specialist engineers and scientists in HASCON / HASOP wastewater treatment, sludge treatment, SCADA, pumping, network modelling, outfall design and assessment. This allows us to provide a quality, cost-effective service to our clients in line with the latest technology and sustainability objectives.

Our range of services covers strategic planning, design, procurement and project supervision of conventional and PPP type wastewater collection and treatment projects. We have experience in the strategic planning of wastewater infrastructure and policy development. We have provided the full range of consultancy services for wastewater collection systems and treatment plants for villages and towns, with populations varying from 500 to 300,000 persons.

Over 40 years, RPS has continually developed its expertise in all aspects of wastewater services delivery, including:

Strategic planning

Feasibility studies, preliminary reports and economic analysis

Development of national guidance documentation

Storm, combined and foul networks model build, calibration, analysis and design

Pluvial, fluvial and tidal flooding relief projects

Sustainable urban drainage systems (SUDS)

Receiving water assessment

Foul and storm pumphouse design

Flow control structures and storm water overflows (CSOs)

Wastewater process design to primary, secondary and tertiary treatment standards

Wastewater treatment infrastructure including tankage, buildings and siteworks

SCADA and mechanical / electrical design

Marine and river/lake outfalls including dispersion modelling

Sludge treatment and disposal

Statutory procedures for wastewater projects including EIS, foreshore licensing, discharge licensing, land acquisition and planning procedures

Health and safety – project supervisor design process (PSDP) / CDM Co-ordinator.

Case Studies

Bray Shanganagh Wastewater Treatment Plant

Bray Shanganagh Wastewater Treatment Plant

SDD Joint Venture / Dún Laoghaire-Rathdown County Council and Bray Town Council

RPS provided Civil and Architectural design services for this high performing, sustainable wastewater facility providing a safe, hygienic environment with successful integration into the surrounding landscape.

The Shanganagh Bray Waste Water Treatment Plant, one of the largest in Ireland, has capacity to treat effluent from a 186,000 population equivalent and the potential to increase capacity to 248,000 in the future for a large conurbation on the Dublin/ Wicklow border.

RPS provided civil and architectural design services on the €98.5m project, which involved the upgrading of the existing Shanganagh Wastewater Treatment Works to provide high level secondary treatment, and the laying of a pipeline from Bray Pumping Station to the new Shanganagh plant to bring wastewater for treatment.

The Shanganagh Bray Waste Water Treatment Plant brings to an end the discharge of untreated wastewater into the Irish Sea and safeguards and protects water quality at Killiney Beach and Bray Strand to meet EU standards. It represents ‘state of the art’ innovative technology in wastewater and sludge treatment, energy recovery and environmental management to standards which set new benchmarks for excellence for such plants in Ireland.

Cheekpoint Sewerage Scheme

Cheekpoint Sewerage Scheme

Irish Water

RPS has completed the design and construction supervision of a new €3.2m wastewater treatment plant and collection system in County Waterford.

The project comprised construction of a new 750 PE treatment plant and 4km of gravity sewers, including a storm overflow pipe laid 190m out into the River Suir. The treatment processes and infrastructure will ensure the local environment is better protected from the adverse effects of urban wastewater with a significant improvement in the water quality of the River Suir.

The new plant will provide the village of Cheekpoint with a modern sewage collection and treatment system capable of meeting current and future development needs. The old septic tank systems which only provided primary treatment have been decommissioned and the new plant is fully operational. A higher standard of wastewater treatment, comprising primary and secondary treatment processes and UV disinfection, complies with the required Urban Wastewater Treatment Directive Standards and the European Council Shellfish Directive.

Corrib Onshore Gas Pipeline

Corrib Onshore Gas Pipeline

Shell E&P Ireland Ltd. (SEPIL)

RPS was responsible for developing an approach to surface water management during construction that would minimise potential impacts in an environmentally sensitive area.

RPS provided specialist technical input to the project in the following water related areas:

Flood risk assessment studies

Water catchment modelling

Drainage design for Landfall Valve Installation (LVI), pipeline construction works on land and tunnelling compound (> 3.7ha)

Wastewater design for tunnelling compound

Temporary surface water treatment systems for enabling works phases

Detailed design of surface water treatment system for tunnelling compound (300m3 per day) including high rate lamellae settlers, sand ballasted lamellae settlers, disc filters, pH dosing etc.

Technical support to SEPIL construction team for commissioning of surface water treatment system

Technical support for procurement, operations and maintenance of surface water treatment systems


Surface water management was particularly challenging on this project given that much of the construction was in peat and located in close proximity to Sruwaddacon Bay.

Greater Dublin Strategic Drainage Project

Greater Dublin Strategic Drainage Project

Dublin City Council & Six other Local Authorities

Examined the systems, policies and future requirements of the region for foul and storm water drainage, driven by EU Water Framework Directive requirements.

RPS (as part of a joint venture) carried out a major strategic study of the entire urban drainage system (foul, storm and river system) and defined a strategy to deal with the needs of the Region. The Region includes the four Dublin Local Authorities plus large areas of counties Wicklow, Kildare and Meath covering a population of some 1.4m people.

The Strategy, costed at well over €1billion, set out proposals for wastewater collection and treatment, stormwater drainage and environmental management of receiving streams and rivers. It developed best practice policies for Operation and Maintenance, Sustainable Urban Drainage Systems (SUDs) and dealing with basements.

North Coast Wastewater Treatment Plant

North Coast Wastewater Treatment Plant

The £45 million North Coast Wastewater Treatment Scheme for Northern Ireland Water (NIW).

RPS, together with its joint venture partner, provided technical and project management services from concept through to construction, commissioning and handover for the £45 million North Coast Wastewater Treatment Scheme for Northern Ireland Water (NIW).

This project has greatly improved the quality of bathing waters in the area by removing discharges of untreated wastewater. Four of Northern Ireland’s most popular beaches: Castlerock Strand, Portstewart Strand, Portrush Mill and Curran Strands (as well as the water in the tidal stretch of the River Bann) all benefit from the scheme. The new activated sludge plant should comfortably accommodate future growth in the area until 2030.

Portlaoise Main Drainage

Portlaoise Main Drainage

Laois County Council

RPS supported this award winning wastewater treatment in Irish Midlands.

This project involved design and construction of a new collection system, upgraded wastewater treatment plant and a new sludge treatment facility. It provides significant environmental benefits for the town of Portlaoise, its environs and the wider community.

The use of a gravity sewerage system in place of older pumping stations has reduced energy consumption and CO2 emissions. Improvements in water quality and the local environment were also achieved, particularly water quality in the Triogue River, which has allowed aquatic life to return and has provided enhanced protection to the River Barrow Special Area of Conservation 5km downstream. The project included a state of the art sludge management facility that has the capacity to treat all municipal sludges generated in County Laois. It was awarded the Engineers Ireland Environmental Infrastructure Award in November 2011.