Commissioning Water Treatment Flushing Engineer

Pre-Commissioning Water Treatment / Flushing Engineer 📍 Location: UK & Europe 💼 Job Type: Full-Time Are you an experienced Pre-Commissioning Water Treatment / Flushing Engineer looking for your next challenge? We're looking for a motivated professional to join the team, delivering high-quality pre-commissioning water treatment and flushing services across a range of exciting projects, including data centres, pharmaceutical facilities, commercial buildings, healthcare, and industrial developments. About the Role As a Pre-Commissioning Water Treatment / Flushing Engineer, you'll be responsible for ensuring HVAC and water systems are cleaned, treated, tested, and fully prepared for commissioning in line with BSRIA BG29 & BG50 standards. Key Responsibilities

• Carry out pre-commission cleaning, chemical dosing, static and dynamic flushing of HVAC and water systems.
• Flush and treat closed and open loop systems, including CHW, LTHW, condenser, and domestic hot & cold water systems.
• Perform on-site water quality testing, including pH, conductivity, iron, hardness, and bacterial sampling.
• Interpret test results and adjust chemical treatment as required.
• Produce accurate documentation, including flushing certificates, water treatment reports, and compliance records.
• Operate flushing pumps, dosing rigs, side-stream filters, and associated equipment.
• Work closely with mechanical and commissioning teams to deliver projects safely and efficiently.
• Ensure all works are completed in accordance with HSE requirements and COSHH regulations.
• Attend client and site meetings, providing technical support where required. What We're Looking For ✅ Minimum 1 year experience in water treatment, pre-commission cleaning, or mechanical flushing. ✅ Strong knowledge of BSRIA BG29 & BG50 guidelines. ✅ Experience working with HVAC systems, pipework, valves, strainers, and water treatment chemicals. ✅ Competent in water quality testing and the use of testing equipment. ✅ Excellent communication, reporting, and organisational skills. ✅ Full clean driving licence and willingness to travel nationwide. Desirable Experience
• Data centre, pharmaceutical, healthcare, commercial, or industrial construction projects.
• Closed loop water treatment, domestic water systems, cooling towers, or cleanroom water systems.
• Legionella Awareness or Water Hygiene qualification.
• Confined Space, MEWP, or other relevant site certifications.
• Experience supervising junior engineers or subcontractors. What We Offer
• Competitive salary and benefits.
• Company vehicle and travel expenses (where applicable).
• Ongoing training and professional development, including BSRIA and LCA certifications.
• Opportunities to work on some of the most exciting construction projects.
• A supportive team environment with genuine opportunities for career progression. 📩 Apply now through LinkedIn or send your CV to gabrielle@blackedge-consulting.com Know someone who would be a great fit? Feel free to share this opportunity with your network.