Service Engineer – Water Hygiene & Water Treatment

2026-02-27

Daytime shift

Permanent


Service Engineer – Water Hygiene & Water Treatment

Location: Field-based (South UK)

Salary: Competitive + OT + Company Vehicle

Employment Type: Full-time, Permanent

Industry: Water Hygiene / Water Treatment


Join a Growing Company

We’re supporting a well‑established technical services organisation in the water treatment & water hygiene sector, who are expanding their engineering team due to continued growth. This is an exciting opportunity for an experienced Service Engineer looking to develop their skills across a wide range of commercial and industrial water systems.

You’ll be joining a supportive, highly skilled team where no two days are the same, with excellent training and progression opportunities available.


The Role

You’ll carry out a variety of water hygiene and water treatment tasks across client sites. Typical duties include:


Water Hygiene & Monitoring

  • Monthly temperature monitoring at sentinel outlets and calorifier flow/return
  • Weekly flushing of little‑used outlets
  • Showerhead and hose descale & disinfection

System Servicing & Compliance

  • TMV servicing (6‑monthly and annual)
  • Expansion vessel purging
  • Cold-water storage tank inspections (cleanliness, integrity, vermin screens, supports)
  • Calorifier inspections, blowdowns & borescope checks
  • Water softener servicing
  • Cleaning & disinfection of tanks, pipework, and associated services

Water Treatment

  • Cooling towers, closed systems & boiler checks (weekly/monthly/quarterly/annual)
  • Sampling: Legionella, TVC, and closed systems
  • Chemical dosing, calibration & equipment checks
  • RO system maintenance
  • Filtration system replacement/backwashing
  • UV system cleaning and lamp replacement

Remedials & Additional Tasks

  • Dead-leg removal
  • Equipment installation
  • Tank compliance upgrades
  • Chemical dosing via pot or pump, with interpretation of water results


What We’re Looking For

Essential

  • Proven experience in water hygiene and/or water treatment
  • Ability to demonstrate competency in some or all of the technical duties listed above
  • Ability to interpret test results and dose closed systems appropriately
  • Strong communication and reporting skills
  • Valid UK driving licence - maximum of 6 points


Desirable

  • Knowledge of HSG274, ACOP L8, and BG50
  • Plumbing or electrical experience
  • Experience using test kits for cooling towers, boilers, and closed systems
  • RO, UV, chemical dosing, or filtration system experience


Qualifications

No mandatory qualifications required — plumbing or electrical qualifications are an advantage.


Why Apply?

  • Company vehicle & fuel card
  • Overtime available (including weekend rota)
  • Training and development through a dedicated technical academy
  • Long-term progression opportunities
  • Supportive, friendly engineering team


Interested?

Apply now with your CV, or contact us for a confidential discussion.




Engineering

Engineering

1059 - Gi Pro - Engineering

Wokingham - Wokingham



Service Engineer – Water Hygiene & Water Treatment
Permanent / Wokingham
Location:
Wokingham
Sector:
Engineering
Job Type:
Engineering
Number of vacancies:
1
Reference code:
1059
Gi Group Team:
Gi Pro - Engineering
Date Vacancy Posted:
2026-02-27

Service Engineer – Water Hygiene & Water Treatment

Location: Field-based (South UK)

Salary: Competitive + OT + Company Vehicle

Employment Type: Full-time, Permanent

Industry: Water Hygiene / Water Treatment


Join a Growing Company

We’re supporting a well‑established technical services organisation in the water treatment & water hygiene sector, who are expanding their engineering team due to continued growth. This is an exciting opportunity for an experienced Service Engineer looking to develop their skills across a wide range of commercial and industrial water systems.

You’ll be joining a supportive, highly skilled team where no two days are the same, with excellent training and progression opportunities available.


The Role

You’ll carry out a variety of water hygiene and water treatment tasks across client sites. Typical duties include:


Water Hygiene & Monitoring

  • Monthly temperature monitoring at sentinel outlets and calorifier flow/return
  • Weekly flushing of little‑used outlets
  • Showerhead and hose descale & disinfection

System Servicing & Compliance

  • TMV servicing (6‑monthly and annual)
  • Expansion vessel purging
  • Cold-water storage tank inspections (cleanliness, integrity, vermin screens, supports)
  • Calorifier inspections, blowdowns & borescope checks
  • Water softener servicing
  • Cleaning & disinfection of tanks, pipework, and associated services

Water Treatment

  • Cooling towers, closed systems & boiler checks (weekly/monthly/quarterly/annual)
  • Sampling: Legionella, TVC, and closed systems
  • Chemical dosing, calibration & equipment checks
  • RO system maintenance
  • Filtration system replacement/backwashing
  • UV system cleaning and lamp replacement

Remedials & Additional Tasks

  • Dead-leg removal
  • Equipment installation
  • Tank compliance upgrades
  • Chemical dosing via pot or pump, with interpretation of water results


What We’re Looking For

Essential

  • Proven experience in water hygiene and/or water treatment
  • Ability to demonstrate competency in some or all of the technical duties listed above
  • Ability to interpret test results and dose closed systems appropriately
  • Strong communication and reporting skills
  • Valid UK driving licence - maximum of 6 points


Desirable

  • Knowledge of HSG274, ACOP L8, and BG50
  • Plumbing or electrical experience
  • Experience using test kits for cooling towers, boilers, and closed systems
  • RO, UV, chemical dosing, or filtration system experience


Qualifications

No mandatory qualifications required — plumbing or electrical qualifications are an advantage.


Why Apply?

  • Company vehicle & fuel card
  • Overtime available (including weekend rota)
  • Training and development through a dedicated technical academy
  • Long-term progression opportunities
  • Supportive, friendly engineering team


Interested?

Apply now with your CV, or contact us for a confidential discussion.



https://uk.gigroup.com/job-offer-detail/wokingham-service-engineer-water-hygiene-water-treatment/?jobid=1059