Field Commissioning Specialist - Water Mains (Pressure & Chlorination)

Celnor; Greater London; On-site; GBP 30,000 - 42,000; Full time

Benefits offered by this job

24 days annual leave

Private healthcare

Additional holiday days (up to 30)

Pension contributions

Professional development funding

Salary reviews

Job summary

Celnor Group is seeking a field-based Pressure Tester to deliver end-to-end commissioning on clean water mains projects in London. You will work closely with the Field Supervisor and Project Manager to ensure safe, compliant site delivery.

The role covers pressure testing, chlorination and dechlorination tasks, with opportunities to develop within a growing environmental services group that values safety, teamwork and hands-on expertise.

Qualifications

• Experience in a commissioning role with exposure to pressure testing, chlorination and dechlorination.
• Industry certifications such as EUSR Water Hygiene and NRSWA are preferred.
• Strong safety and RAMS briefing skills and ability to uphold high standards.

Responsibilities

• Ensure full compliance with HSE, safety and environmental standards on site.
• Deliver commissioning activities including pressure testing, chlorination, dechlorination and asset commissioning.
• Conduct pre-, live- and post-site surveys and briefings for safe delivery.
• Liaise with internal teams, clients, contractors and suppliers to maintain clear communication.
• Monitor dosing equipment performance (flow, pressure, turbidity, chlorine) for compliance.
• Identify and resolve commissioning issues to protect water quality and network integrity.
• Maintain records, manage equipment, support other workstreams and mentor technicians.

Skills

Pressure testing

Chlorination

Dechlorination

Commissioning

Valve operations

Driving licence

Education

EUSR Water Hygiene

SHEA Water

Hydrostatic Pressure Testing

NRSWA

CSCS/SSSTS/SMSTS

Tools

GIS mapping tools

PDA/Tablet use

Online reporting software

Job description

Celnor Group is seeking a field-based Pressure Tester to deliver end-to-end commissioning on clean water mains projects in London. You will work closely with the Field Supervisor and Project Manager to ensure safe, compliant site delivery.

The role covers pressure testing, chlorination and dechlorination tasks, with opportunities to develop within a growing environmental services group that values safety, teamwork and hands-on expertise.