Drainage Engineer

OCS; Hounslow; On-site; GBP 30,000 - 50,000; Full time

Job summary

OCS UK & Ireland is seeking an experienced Drainage Engineer to support a leading UK broadcasting and media organisation. You will operate, maintain and repair environmental water and drainage systems across the site, ensuring safety, compliance and continuous operation.

The role requires practical expertise in water treatment, drainage and related equipment, with responsibilities spanning monitoring, maintenance, CCTV surveys and liaising with contractors to resolve issues.

Qualifications

• Practical engineering experience within water systems, water treatment or environmental services.
• Knowledge of domestic and commercial water systems.
• Experience with water softeners, pumps and dosing systems.

Responsibilities

• Monitor and maintain building water systems in line with ACOP L8 and Water Regulations.
• Inspect and repair water treatment equipment and dosing systems.
• Carry out drainage maintenance including foul drainage, traps, gullies and sump pumps.
• Carry out CCTV surveys and remedial works on drainage systems.
• Respond to Legionella risks, flooding and public health concerns.

Skills

Water systems

Water treatment

Legionella knowledge

Fault-finding

Maintenance

MS Office

Education

City & Guilds water qualifications

Job description

About The Role:

OCS is looking for an experienced Drainage Engineerto join our team supporting a leading UK broadcasting and media organisation.

You will be responsible for the operation, maintenance, monitoring and repair of environmental water and drainage systems across the site, ensuring systems remain safe, compliant and fully operational.

The role requires strong practical engineering knowledge, particularly across water treatment, water systems, drainage and associated equipment.

Key Responsibilities

• Monitor and maintain building water systems in line with ACOP L8, HSG 274 Parts 1, 2 and 3, Water Fittings Regulations and relevant site procedures.
• Inspect, fault-find and repair water treatment equipment, including water softeners, dosing pumps and associated systems.
• Carry out monitoring and maintenance of environmental water systems and equipment.
• Undertake drainage maintenance, including:
  • Foul drainage systems
  • Grease traps
  • Penstocks
  • Gullies
  • Soil stacks
  • Sump pumps
  • Interceptors
• Carry out CCTV/camera surveys of drainage systems when required.
• Clean, inspect, fault-find and arrange remedial works on drainage, interceptors, sump pumps and associated equipment.
• Respond to environmental water issues, including Legionella risks, flooding, drainage issues and public health concerns.
• Maintain accurate water and environmental system logbooks and records.
• Liaise with specialist contractors and subcontractors to resolve water and environmental system issues.
• Review and update relevant drawings, schematics and system documentation.
• Ensure high-risk activities, including sump and interceptor cleaning, are carried out in accordance with approved RAMS, Safe Systems of Work and Permit to Work procedures.
• Identify faults and elevate issues where specialist support or further remedial works are required.
• Support the delivery of planned and reactive maintenance activities across the site.
• Maintain a high standard of housekeeping and ensure work areas are left safe and clean.

Health, Safety & Compliance

• Follow all OCS health, safety, environmental and compliance procedures.
• Work in accordance with approved RAMS, Safe Systems of Work and Permit to Work requirements.
• Report accidents, near misses, hazards and unsafe conditions through the appropriate systems.
• Complete all mandatory training and maintain required competency levels.
• Use all required PPE and safety equipment.
• Ensure work is completed in accordance with current legislation, industry standards and site procedures.
• Be willing to undertake First Aid training and associated duties where required.

Contractor & Supply Chain Management

• Liaise with subcontractors and specialist contractors working on water and environmental systems.
• Monitor subcontractor performance and ensure work is completed safely, to specification and within agreed timescales.
• Provide feedback on contractor performance and identify opportunities to improve service delivery.
• Identify opportunities to bring suitable outsourced services in-house where appropriate.

Client & Customer Service

• Build and maintain a professional working relationship with the client, site teams and end users.
• Respond promptly and professionally to water and environmental system issues.
• Maintain clear communication with relevant stakeholders throughout planned and reactive works.
• Ensure actions arising from inspections, faults and client feedback are recorded and followed through to completion.
• Support the delivery of agreed service levels, KPIs and SLAs.

IT & Administration

• Maintain accurate maintenance records, logbooks and reports.
• Use relevant CAFM, maintenance and reporting systems effectively.
• Maintain proficiency in Microsoft Office, including Word and Excel.
• Produce clear and concise written reports where required.

Person Specification

Essential

• Practical engineering experience within water systems, water treatment, plumbing or environmental services.
• Knowledge of domestic and commercial water systems.
• Experience working with equipment such as water softeners, pumps and dosing systems.
• Understanding of Legionella control and the risks associated with water systems.
• Good understanding of safe working practices and Permit to Work procedures.
• Ability to fault-find and undertake practical maintenance activities.
• Good written and verbal communication skills.
• Ability to work independently and as part of a wider engineering team.
• Good IT skills, including Microsoft Word and Excel.
• Full UK driving licence preferred.

Desirable / Advantageous

• Experience of cooling tower operation and maintenance.
• Legionella/Legionnaires' disease training, including cooling tower awareness.
• Water Fittings Regulations and backflow prevention training, such as BPEC.
• TMV maintenance training.
• Confined Space training.
• Relevant City & Guilds or equivalent water systems qualifications.
• Experience working within a large commercial, industrial or critical environment.

Personal Attributes

• Practical and solutions-focused approach.
• Strong attention to detail.
• Organised and able to prioritise workload effectively.
• Comfortable making decisions and working with limited supervision.
• Reliable and professional approach.
• Able to communicate effectively with clients, colleagues and contractors.
• Flexible approach to working hours and operational requirements.
• Committed to maintaining high standards of safety, compliance and customer service.

About The Company:

OCS UK & Ireland is a leading facilities management company with 50,000+ colleagues and a turnover in excess of £2bn. We deliver innovative, award-winning services within facilities management, hard services, cleaning, security and catering.

Our mission is to make people and places the best they can be for our colleagues, customers and the communities we serve. Our commitment to doing business the right way is rooted in our TRUE values - Trust, Respect, Unity, and Empowerment.

Why Work for OCS?

Award-Winning Employer: Ranked 36th on Glassdoor’s Best Companies to Work For 2025 — we value and motivate our people.

Digital Learning: The OCS Academy offers digital courses and resources to help you build skills and grow your career.

Retail Perks With our Hapi app, you can gain access to exclusive discounts, rewards and wellbeing resources.

Professional Growth: 600+ live learners across UK&I — Empowering colleagues with further development and qualifications!

Flexible Pay: Access a portion of earned wages before payday with our Wagestream App! (Contract Specific)

We are an equal opportunities employer and rely on a diverse workforce with a broad range of knowledge, skills, and backgrounds to deliver our goals. We offer an inclusive and welcoming environment and actively encourage applications from all individuals regardless of race, gender, nationality, religion, sexual orientation, disability, or age.

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