What is Water Treatment?
Water Treatment is defined as the process of improving water quality to make it safe, compliant, and suitable for its intended use. In Cleartech’s case, that means making it suitable for drinking or for use in closed-loop systems for heating or cooling.
Water treatment involves physical, chemical, and biological processes to remove contaminants, control bacteria, corrosion monitoring and ensure compliance within British Standard BS 8558, HSG 274 and L8 ACOP, in relation to domestic water & BG29/2021, BG50/2023 & BS7593:2019 in relation to closed loop systems.
Water Treatment is important as poor quality water can lead to system damage, regulatory non-compliance, and pose serious health risks. Cleartech’s role is to prevent those issues by offering proactive water treatment that protects your business and people.
Domestic & Potable Water
Cleartech provides comprehensive treatment solutions for domestic and potable water systems, ensuring safety, hygiene, and regulatory compliance across a range of property types. Domestic water services are essential for the safe delivery of water used in drinking, washing, food preparation, and other daily activities.
Our services align with HSG 274 Part 2, BS 8558, and Water Supply (Water Fittings) Regulations, focusing on bacterial control (including Legionella), system cleanliness, temperature management, and material compatibility.
Mains Injection Chlorination & Disinfection
Cold Water Storage Tank Cleaning, Disinfection, and Refurbishment
Hot & Cold-Water System Flushing
Calorifier & Water Heater Cleaning
Thermal Disinfection / Pasteurisation
Legionella Sampling & Consultancy
Showerhead Cleaning & Disinfection
Thermostatic Mixing Valve (TMV) Servicing and Fail-Safe Testing
Dead-Leg Removal & Pipework Mods
WRAS Backflow Prevention (e.g., RPZ valves)
Water Cooler Cleaning & Maintenance
Point-of-Use Filter Install & Replacement
UV System Supply & Maintenance
Installation, Design & Servicing of On-Site water Treatment Plant
Water Softening & Scale Control
Domestic Water Risk Assessments & Consultancy
Closed Loop Commercial Service
What is Closed Loop Water Treatment?
Closed Loop Water Treatment is the process of maintaining the quality of water within a closed loop system. These systems circulate water for heating, cooling, and other industrial purposes. Careful monitoring is needed for corrosion control, scale build up, and bacterial growth. If left unattended, it can lead to inefficient performance and costly downtime.
At Cleartech, we specialise in expert closed loop water treatment and remediation services that ensure systems remain clean, balanced, and fully compliant with key UK regulations, including BSRIA BG 29/2021 and BG 50/2023.
Our Commercial Services
We provide end-to-end support across all areas of industrial and commercial water treatment across a range of sectors including Healthcare, Hospitality, Education, Data Centres, Commerical Offices and many more. Our services are delivered by highly qualified water treatment engineers, offering expert analysis and practical advice tailored to each site’s unique conditions.
All treatment services are tailored to the site and water system conditions, with regular performance reviews to ensure a consistent system of health and compliance.
Pre-Start Site Surveys
Closed Loop Water Treatment and Remediation
Pre-Commissioning Chemical Cleaning
Chemical Cleaning of Water Systems
Remedial Water Treatment
Pre-Treatment Plant Maintenance
Pre-Commissioning Cleaning of Pipework Systems (BSRIA Guide BG 29/2021)
Sampling, Testing and Monitoring of Water Systems
Side Stream & CPC Filtration
Chemical Free Water Treatment
Guided by the principles of VDI 2035, we offer our clients chemical free water treatment services. VDI 2035 is a European standard that promotes corrosion and scale prevention by controlling water quality, without the addition of chemicals.
Chemical free water treatment is a method of treating water that relies on filling water systems with low-conductivity, demineralised water, maintaining appropriate pH levels, and excluding oxygen from the system, which removes the need for chemical dosing.
A part of this approach is the use of reverse osmosis, a process that dissolves salts, minerals and impurities from water without the need for chemicals. This allows for ultra-pure fill water for closed loop systems, reducing the risk of corrosion and scaling at the source.
This approach is ideal for modern heating systems that are properly sealed and maintained. It offers a sustainable, low-risk solution that reduces chemical handling, simplifies maintenance, and supports long-term system efficiency.
Our qualified water treatment engineers can help you implement compliant chemical free water treatment, ensuring your water systems stay protected, efficient, and fully compliant with regulations and sustainability targets.
Sustainable option avoids use of chemicals and dumping water
Can allow cost saving during the maintenance stage
Saves time during the process from filling to commissioning
Specialist & Industrial Water Systems
In addition to domestic and closed-loop systems, Cleartech supports the treatment and compliance of complex industrial and process-critical water systems. These require advanced control measures to manage corrosion, scaling, bacterial risk, and efficiency in line with BS2486, HSG 274 Part 1, COSHH, and manufacturer guidance.
Our engineers apply chemical, mechanical, and digital control techniques tailored to each system’s design, load, and operational environment.
Cooling Tower Water Treatment & Control
Steam Boiler Water Treatment
Process Water Systems
On-site Water Treatment Equipment Installation & Servicing
Private Water Supplies
Site surveys and compliance assessments
Raw water sampling and laboratory analysis
Source protection and filtration strategy design
System upgrades and treatment plant specification
Full design, installation and validation of compliant systems
Ongoing monitoring and testing plans
FAQs
Closed-Loop Water Treatment is important because it is a system which recirculates the same water continuously.
If left unattended, problems such as corrosion, scale formation, and bacterial growth can gradually build up, causing system damage and reducing efficiency.
Regular maintenance helps prevent health and safety risks, improves system reliability, and ensures compliance with relevant industry standards.
If a heating or cooling system is not treated in line with current industry standards and regulations, several risks can arise over time including: corrosion, scale build up, bacteria and biofilm growth, reduced temperature performance, breakdowns, expensive repairs, and failures to meet guidelines such as BG 50/2021 or BS 8552 can result in legal or insurance complications.
After water treatment works are completed, it is important to maintain the system through regular monitoring and professional oversight. This includes routine water sampling and testing to detect any early signs of corrosion, scale formation, or bacterial growth. Chemical dosing levels, such as inhibitors and biocides, should be checked to ensure they remain within the correct parameters.
Regular system inspections can help identify potential issues, such as leaks or sediment buildup, before they worsen. Keeping accurate records of treatment activity and test results supports compliance with industry standards. For long-term reliability, partnering with a water treatment specialist ensures your system remains efficient, safe, and fully compliant over time.
Chemical free water treatment is most effective in closed-loop systems, especially those that are well-sealed and properly maintained.
These systems benefit from high-purity, low-conductivity water, often produced via reverse osmosis, which helps prevent corrosion and scale without the need for chemical additives. It is also used in certain Legionella control strategies, particularly with UV and filtration systems in open water supplies.
