Building Services Engineer - Water Hygiene

ISS Facilities Services; Rottingdean; On-site; GBP 30,000 - 50,000; Full time

Job summary

A leading workplace and facility management company is looking for a Building Services Engineer specializing in Water Hygiene. This role involves ensuring safe water systems through maintenance, Legionella testing, and compliance with regulations. Candidates should have experience in water hygiene, plumbing knowledge, and be dedicated to health and safety. You will perform routine checks and be involved in emergency responses to ensure immediate action on water quality issues. A challenging position within a diverse and inclusive team awaits you.

Qualifications

• Some prior experience in water hygiene or a similar plumbing/water treatment position.
• Knowledge of water systems and relevant regulations (ACOP L8, HSG274).
• Ability to work independently and as part of a team.

Responsibilities

• Conduct routine temperature monitoring and flushing of water systems.
• Take water samples for microbiological and chemical analysis.
• Perform cleaning, descaling, and disinfection of water system components.
• Service and calibrate Thermostatic Mixing Valves (TMVs).
• Respond to emergency callouts for urgent water quality issues.

Skills

Problem-solving

Attention to detail

Communication skills

Basic IT literacy

Education

City & Guilds in Legionella Control

NVQ Level 2 in plumbing

Job description

Building Services Engineer - Water Hygiene

Contract: Professional Services, Production & Technology

Location: London, W12 7GF

Hours of work: 40

Contract Type: Permanent

Join our team as a Water Hygiene Engineer and play a vital role in ensuring safe and compliant water systems. This position is perfect for individuals with hands‑on experience in water hygiene or plumbing who are passionate about health and safety standards.

Job Description

As the Water Hygiene Engineer, you will be responsible for maintaining water systems to prevent Legionella and other waterborne pathogens. The role involves planned preventative maintenance (PPM), remedial tasks, and compliance with industry regulations across diverse client sites.

Key Responsibilities

• Conduct routine temperature monitoring and flushing of water systems.
• Take water samples for microbiological and chemical analysis, including Legionella testing.
• Perform cleaning, descaling, and disinfection of water system components such as cold‑water storage tanks and calorifiers.
• Service and calibrate Thermostatic Mixing Valves (TMVs).
• Carry out remedial works, including minor plumbing and removal of unused pipe sections.
• Maintain accurate documentation and service reports using electronic or paper‑based systems.
• Ensure compliance with ACOP L8 and HSG274 guidelines.
• Liaise with clients to provide advice and recommendations.
• Respond to emergency callouts for urgent water quality issues.

Professional and Personal Competencies/Qualifications

• Some prior experience in water hygiene or a similar plumbing/water treatment position.
• Knowledge of water systems and relevant regulations (ACOP L8, HSG274).
• Desirable Qualifications: City & Guilds in Legionella Control or NVQ Level 2 in plumbing.
• Problem‑solving, attention to detail, communication skills, and basic IT literacy.
• Ability to work independently and as part of a team, positive attitude, and commitment to health and safety practices.

The Company

ISS is a world‑leading workplace and facility management company, connecting people and places to make the world work better. Working with customers day by day, side by side, we understand every aspect of the user experience. Through a unique combination of intelligent solutions, high standards and people who care, to help our customers achieve their purpose, whether it’s hospitals healing patients, businesses producing the next great innovation, or airports bringing passengers home to their families. ISS is committed to doing business the right way, taking its corporate responsibility very seriously. Our passion is people.

We offer you a challenging and exciting career in an organisation with people at its heart. In ISS, everyone has the opportunity to develop, grow and make a difference. #ISSGreatPeople #ISSTalent #PeopleMakePlace

ISS is proud to be a diverse and inclusive employer. ISS welcomes all applicants regardless of age, disability, gender identity or gender reassignment, marital or civil partnership status, pregnancy or maternity, race (which includes race, colour, nationality, ethnic or national origin and caste), religion or belief, sex, sexual orientation or educational background. We are a Disability Confident Committed (Level 2) employer, proudly supporting and promoting inclusive hiring practices in line with the UK government’s Disability Confident scheme. Our passion for inclusivity and diversity makes ISS a more creative, productive and happy place to work.

If you have any further queries regarding this role, please contact the Resourcing Team by emailing [e-mail]