Water Hygiene Risk Assessor

About The Role

Monday to Friday, 08:00 – 17:00

This position is a mobile role, covering the London and surrounding areas.

• Inspect, clean and disinfect hot and cold-water systems, including storage tanks, calorifiers and associated pipework, in line with HSG
  274 Part 2 and L8 ACOP.
• Carry out routine temperature monitoring, water sampling and basic testing to minimise Legionella risk.
• Interpret test results and recommend appropriate remedial actions.

• Support Legionella risk assessments and implement required control measures.
• Ensure compliance with L8 ACOP, HSG
  274, COSHH, and Health & Safety legislation.
• Maintain accurate inspection, testing and compliance records.

• Complete flushing, descaling, chlorination and other remedial works.
• Install, repair and maintain TMVs, pumps and associated water system components.
• Respond to emergency water hygiene callouts when required.

• Communicate inspection findings and recommendations to clients.
• Deliver a professional, customer-focused service at all times.

• Promote a strong health and safety culture across all activities.
• Work in accordance with OCS policies, RAMS and Construction Phase Plans (CPPs).
• Complete and support risk assessments, method statements and toolbox talks.

• Experience as a Water Hygiene Engineer or similar.
• Good knowledge of HSG
  274 Part 2, L8 ACOP and UK water hygiene legislation.
• Experience carrying out water sampling, temperature monitoring and remedial works.
• Strong problem-solving, attention to detail and communication skills.
• Full UK driving licence.
• Flexible approach to working hours, including occasional out-of-hours callouts.

• City & Guilds Legionella Control in Hot and Cold-Water Systems (or equivalent).
• Experience installing and maintaining TMVs.
• L8 ACOP Qualification
• Knowledge of COSHH and safe handling of water treatment chemicals.

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.

• 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.