WATER TREATMENT Become an Associate with City & Guilds! J
oin our City & Guilds Associate community and make a difference. We have a wide range of flexible Associate Opportunities, in the Building Services (BSE) sector that give you the opportunity to get involved. Associate roles are extremely varied, offering great opportunities and collaboration with others, and we are confident there is an opportunity for you. These roles are a great way to build additional income with competitive daily rates, support your industry and develop your own skills at the same time. Many of the roles are flexible so you can combine becoming an Associate alongside your other professional and personal commitments.
Marking Examiners: We are looking for T Level Marking Examiners to join us in the delivery of the Summer 2025 assessment series and beyond.
As a Marking Examiner you will mark scripts/evidence accurately and consistently to ensure overall standards
T Level Moderators The moderator role involves, moderating centre marking, providing advice and guidance to centres and producing City & Guilds and centre reports.
External Quality Assurers (EQA) Our EQAs support our centres with current industry and quality assurance expertise. As a City & Guilds EQA you will need to maintain effective working relationships with our centres and the City & Guilds office, planning and monitoring quality assurance activities in line with our qualification requirements.
will establish minimum performance and reliability standards for heat networks. This will be a significant step forward for building owners and contractors, ensuring their systems perform efficiently. Heat network operators will need to meet strict technical standards and end users will benefit from reliable and cost-effective heating. Since the end of 2022, the Department for Energy Security and Net Zero (DESNZ) has been working with its technical author (Fairheat) to develop a technical standards Code. This sets out technical requirements (e.g. pipe insulation, water flow temperatures) which will be mandated in upcoming regulations. Many of these technical requirements build on the voluntary standards set out in CIBSE CP1 (2020). For existing networks, assessments will be required over time, allowing systems to transition to the new regulations.
Regulations for existing non- heat network systems
For buildings not on heat networks, Building Regulations Part L governs heating system efficiency. Part L requires thorough cleaning and flushing of systems before installing a new boiler and the Addition of chemical water treatments to prevent corrosion and scaling. Despite these regulations, compliance is inconsistent. BSRIA guidance (BG50) provides best practices but lacks enforcement mechanisms. This is a missed opportunity, as improved compliance could significantly reduce carbon emissions and operating costs.
The cost of poor water treatment
Ignoring water treatment leads increased energy costs, for example: just 1mm of limescale can increase energy use by 7%. Poor water treatment can also lead to Premature component failure, and it is worth noting that appliance warranties are often voided if poor water quality is detected. System downtime and loss of efficiency can lead to higher maintenance and replacement costs. There also may be environmental penalties, as inefficient systems contribute more CO2 emissions. Failure to meet MEES (Minimum Energy Efficiency Standards) and EPC rating requirements makes properties potentially non- compliant by 2030.
Conclusion
Effective water treatment is not just a maintenance task. It is a strategic necessity for commercial heating systems. Whether a system is part of a heat network or operating independently, preventing corrosion, scaling, sludge accumulation and biofouling is key to maintaining efficiency, lowering energy costs, and ensuring regulatory compliance. The introduction of HNTAS will help enforce stricter standards for heat networks, while adherence to Building Regulations Part L remains essential for standalone systems. Regular monitoring, correct chemical treatment, and compliance with best practices such as BSRIA BG50 will allow commercial building owners and contractors to avoid costly failures, improve energy efficiency, and contribute to a more sustainable future.
*Source: ADEY Commercial System Diagnostics Test Kit City and Guilds qp BSEE
Apr25.indd 1 Read the latest at:
www.bsee.co.uk 10/3/25 11:34 BUILDING SERVICES & ENVIRONMENTAL ENGINEER APRIL 2025 11
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Why become an associate: • Competitive Rates • Great way to develop your own skills • Network with others in your industry and sector • Gain greater awareness of qualifications and products • Flexible • 100% Homebased (Marking Examiner roles) • An excellent CPD opportunity
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