Water Treatment Engineer
| Posting date: | 19 February 2026 |
|---|---|
| Salary: | £34,000 to £38,000 per year |
| Hours: | Full time |
| Closing date: | 21 March 2026 |
| Location: | Newbury, West Berkshire |
| Remote working: | On-site only |
| Company: | ISS Facilities Services |
| Job type: | Permanent |
| Job reference: | 152325 |
Summary
Water Treatment Engineer
Contract: Key Account Network
Location: Newbury or surrounding area, with regular travel across the South East
Hours of work: 40
Contract Type: Permanent
We are recruiting a Water Treatment Engineer to support a growing portfolio of commercial, banking and government sites across Southern England.
Job Description
This is a hands-on, field-based role where you’d manage full water hygiene programmes across commercial office sites, carrying out sampling, temperature monitoring, TMV servicing, cooling tower testing, closed system dosing, and tank inspections to ensure full compliance.
Act as a trusted on-site specialist, producing accurate reports while building strong relationships with facilities teams and proactively maintaining safe, efficient water systems.
Key Responsibilities
What You’ll Be Doing (Day-to-Day):
Temperature monitoring and outlet flushing
Shower head inspection, cleaning and disinfection
TMV servicing and fail-safe testing
Cold water storage tank inspections, cleaning and chlorination
Legionella sampling
Closed system sampling, testing and dosing (LTHW / CHW systems)
Checking inhibitor levels, pH and system condition
Supporting minor remedial works where required
Completing accurate service reports via handheld PDA
Professional and Personal Competencies/Qualifications
Full UK driving licence (max 6 points)
Experience in water hygiene / legionella / water treatment maintenance
An understanding of ACoP L8 and HSG274 guidelines
Experience working on commercial water systems
Closed system sampling/dosing experience desirable
Eligible for BPSS clearance (5 years UK residency & clean criminal record)
If you’re looking for a stable, permanent role with consistent overtime, varied sites and genuine career progression - apply today.
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: Key Account Network
Location: Newbury or surrounding area, with regular travel across the South East
Hours of work: 40
Contract Type: Permanent
We are recruiting a Water Treatment Engineer to support a growing portfolio of commercial, banking and government sites across Southern England.
Job Description
This is a hands-on, field-based role where you’d manage full water hygiene programmes across commercial office sites, carrying out sampling, temperature monitoring, TMV servicing, cooling tower testing, closed system dosing, and tank inspections to ensure full compliance.
Act as a trusted on-site specialist, producing accurate reports while building strong relationships with facilities teams and proactively maintaining safe, efficient water systems.
Key Responsibilities
What You’ll Be Doing (Day-to-Day):
Temperature monitoring and outlet flushing
Shower head inspection, cleaning and disinfection
TMV servicing and fail-safe testing
Cold water storage tank inspections, cleaning and chlorination
Legionella sampling
Closed system sampling, testing and dosing (LTHW / CHW systems)
Checking inhibitor levels, pH and system condition
Supporting minor remedial works where required
Completing accurate service reports via handheld PDA
Professional and Personal Competencies/Qualifications
Full UK driving licence (max 6 points)
Experience in water hygiene / legionella / water treatment maintenance
An understanding of ACoP L8 and HSG274 guidelines
Experience working on commercial water systems
Closed system sampling/dosing experience desirable
Eligible for BPSS clearance (5 years UK residency & clean criminal record)
If you’re looking for a stable, permanent role with consistent overtime, varied sites and genuine career progression - apply today.
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.