Building Services Engineer - Water Hygiene
| Posting date: | 09 January 2026 |
|---|---|
| Salary: | £39,000 to £43,000 per year |
| Hours: | Full time |
| Closing date: | 08 February 2026 |
| Location: | W12 7GF |
| Remote working: | On-site only |
| Company: | ISS Facilities Services |
| Job type: | Permanent |
| Job reference: | 150397 |
Summary
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 resourcing.team@uk.issworld.com
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 resourcing.team@uk.issworld.com
Proud member of the Disability Confident employer scheme
Disability Confident
About Disability Confident
A Disability Confident employer will generally offer an interview to any applicant that declares they have a disability and meets the minimum criteria for the job as defined by the employer. It is important to note that in certain recruitment situations such as high-volume, seasonal and high-peak times, the employer may wish to limit the overall numbers of interviews offered to both disabled people and non-disabled people. For more details please go to Disability Confident.