Engineering tomorrow’s infrastructure – keeping it performing at its best today.
Coffey delivers end-to-end operations and maintenance (O&M) for municipal and industrial water and wastewater assets, combining process know-how, civil and MEICA capability, and digital monitoring to maximise reliability, compliance, and life cycle value. We currently support drinking water and wastewater facilities across Ireland and the UK, with a track record spanning long-term DBO (Design, Build, Operate) and DBFO (Design, Build, Finance, Operate) contracts, as well as targeted O&M engagements.
Why Coffey O&M?
Integrated by design. Our in-house design, construction, commissioning, and operations teams work as one, ensuring smooth handovers and faster optimisation in live environments.
Digital in practice. From SCADA and telemetry to data-driven maintenance routines, we embed digital tooling that improves uptime, safety, and compliance reporting.
Sustainable by outcome. We prioritise energy efficiency, chemical stewardship, and resource recovery—aligning performance with environmental goals.
Proven at scale. Coffey operates 60+ sites across municipal and industrial portfolios, delivering continuity, resilience, and measurable improvements.
What we do
- Operations & Compliance
- Day‑to‑day plant operation (WTPs, WWTPs, pumping stations, nature-based systems)
- Regulatory sampling & reporting; licence and DW regulations adherence
- Out‑of‑hours response and incident management
- Maintenance & Optimisation
- Preventative maintenance routines
- Corrective works, critical spares management, OEM interfacing
- Process tuning (energy, chemicals, throughput, quality)
- Digital Monitoring & Controls
- SCADA/telemetry integration, alarm strategy, dashboards
- Data collection and analytics for predictive maintenance
- Lifecycle & DBO
- Commissioning support, operator training, O&M manuals
- Long‑term DBO/DBFO operations with performance baselines
- Industrial O&M (see dedicated section below)
- Turnkey operation, compliance stewardship, production‑aligned KPIs
Our Digital Approach
Measurable control. We integrate SCADA, telemetry, and instrumentation to provide real‑time visibility of process health, alarms, and trends—supporting proactive decision‑making and evidence‑based compliance.
Predictive maintenance. Data from critical rotating and process equipment feeds condition‑based interventions, reducing unplanned downtime and improving lifecycle cost performance.
Design‑to‑operate collaboration. Early involvement of our design teams, OEM, and instrumentation partners keeps our teams current on best‑in‑class sensing and automation, translating into smarter designs and more maintainable assets in operation.
What this means for you
- Fewer unplanned stoppages, faster recovery
- Clear audit trails and automated reporting packs
- Continuous optimisation of energy/chemical use
Sustainability in Operations
Operate efficiently. We target energy intensity hot‑spots (aeration, pumping, UV) and optimise set‑points to cut kWh/m³ without compromising quality.
Use chemicals responsibly. Improved control strategies and dosing optimisation reduce over‑use and sludge burden.
Recover and reuse. Where viable, we support nature‑based and low‑energy solutions and enable beneficial use pathways for residuals.
Design‑right. Our DBO model ensures operability, maintainability, and environmental performance from the start.
Enfield Wastewater Treatment Plant
Industrial O&M
Uptime and compliance for production‑critical sites.
Coffey provides tailored O&M for food & beverage, pharmaceutical, and manufacturing facilities, aligning plant performance with production windows, hygiene regimes, and tight discharge standards.
Typical industrial services
- 24/7 operations cover with permit‑to‑work routines
- High‑strength effluent treatment (DAF/DAFF, MBR/MBR‑RO, biological nutrient removal)
- FOG and solids management, pre‑treatment to protect downstream networks
- Real‑time compliance dashboards and regulator liaison
Commercial models
- Short‑term stabilisation and interim operations
- Multi‑year O&M with performance KPIs
- O&M wrapped into DBO/DBFO where lifecycle outcomes matter most
Municipal O&M
We operate treatment plants and networks on behalf of Uisce Éireann and local authorities, delivering safe water and compliant discharges while building asset resilience. Our long‑term DBO experience gives clients continuity through the full lifecycle design, build, commission and operate.
Delivery model
- Mobilise: Site survey, risk & opportunity assessment, KPI baselining
- Stabilise: Remove bottlenecks; standardise SOPs, alarms, set‑points
- Optimise: Implement energy/chemical efficiency plans, predictive maintenance
- Assure: Monthly performance reviews, regulator‑ready reporting packs
- Evolve: Continuous improvement tied to asset strategy and capital planning
Performance & Compliance (what clients can expect)
- Reliability: Digitally supported operations with escalation playbooks
- Compliance: Licence‑aligned routines; transparent evidence packs
- Cost control: Energy and chemical optimisation built into O&M plans
- Safety: ISO‑driven HSQE frameworks and operator training
Selected Projects
Lough Talt WTP (8 MLD) – Design, Build & O&M
End‑to‑end delivery and operations at a critical drinking water facility, including advanced filtration and disinfection, with ongoing optimisation of power and dosing regimes.
Spiddal & Ahascragh WWTPs – New build + upgrade with O&M period
Delivered a new WWTP at Spiddal and upgraded Ahascragh, integrating SCADA/telemetry, RBCs, sludge handling, and site decommissioning—followed by an operations and maintenance period to embed stable performance.
Certifications
Coffey recognises the importance of managing Health and Safety, the Environment, Quality and Energy through the operation of management systems that meet the requirements of ISO 45001 2018, ISO 14001 2015, ISO 44001 2017, ISO 9001 2015 and ISO 50001 2011.
ISO-certified management systems
Ready to talk?
Whether you need a stabilisation programme, an interim operations partner, or a lifecycle DBO/DBFO solution, our O&M team can help.
Get in touch
- Email: info@coffeygroup.com
- Call: +353 (0)91 844356
- Ireland HQ: Athenry, Co. Galway | UK Office: Burntwood, Staffordshire
