Your Trusted Partner for Tank Cleaning & Disinfection
If you’re here, there’s a good chance your cold water storage tank needs cleaning - maybe you’ve had poor sample results, visible contamination, or a recent inspection has highlighted non-compliance.
You’re in the right place. At Titan Water, we provide professional water tank cleaning and disinfection services for all types of commercial and industrial sites. Our engineers carry out full internal cleans, debris removal and BS 8558-compliant disinfection to make sure your drinking and domestic water systems remain safe, clean, and fully compliant with ACOP L8 and HSG274.
We take a practical, thorough approach. That means proper isolation, deep cleaning using safe, approved methods, and disinfection carried out to recognised standards. You’ll receive clear certification and straightforward guidance on any issues we find. Whether it’s a routine clean or a reactive disinfection after contamination, Titan Water will help you get your system back to a safe and compliant condition.
Nationwide Service
Reliable Expertise Wherever You Are
Our experienced management team operate from the Titan head office near Liverpool, but while our roots are firmly in the North West, our reach goes far beyond it. Our engineers carry out tank cleaning and disinfection projects across the UK, supported by a trusted network of regional specialists. Whether it’s a school in Birmingham, a hotel in Cardiff, or a commercial building in Newcastle, we’ve been there – and we understand the importance of keeping cold water storage tanks clean and compliant.
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If you’re dealing with dirty tank conditions, poor sample results, or you’re simply due a routine clean, the team at Titan are always happy to offer clear, honest advice on the best route forward.
BEFORE
AFTER
What Is Water Tank Cleaning and Disinfection?
Tank cleaning and disinfection is the process of removing sediment, scale, biofilm, and debris from a cold water storage tank, followed by treating the system with an industry-approved disinfectant to eliminate harmful bacteria such as Legionella and E. coli.
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A full clean includes draining the tank, physical cleaning and scrubbing of internal surfaces, removal of contaminants, and a chlorination/disinfection process carried out to BS 8558, PD 855468, and HSG274 guidance. It ensures your drinking and domestic water supply is hygienic, safe, and fully compliant with HSE regulations.
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Key objectives:
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Remove contamination and biofilm from tank surfaces.
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Disinfect the system to eliminate harmful bacteria.
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Ensure legal compliance with ACOP L8 and HSG274.
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Improve water quality and system performance.
How Often Should a Cold Water Storage Tank Be Cleaned?
Most cold water storage tanks should be cleaned and disinfected annually, although the exact frequency depends on water quality, system design, and risk assessment findings.
You should also schedule a clean if:
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Water sample results show elevated bacteria counts.
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There is visible debris, scale, rust, or sludge.
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The tank has been offline or unused for an extended period.
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The tank has been repaired, relined, or altered.
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A Legionella risk assessment recommends cleaning.
Regular cleaning prevents contamination, improves water quality, and helps maintain compliance with HSE guidance and local authority expectations.
What’s Involved in the Tank Cleaning and Disinfection Process?
A professional tank clean follows a structured and controlled procedure:
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Drain down and isolation – Making the tank safe to enter and ensuring supply continuity where required.
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Physical internal clean – Removing sediment, scale, rust, biofilm, and debris from all internal surfaces.
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Inspection and condition check – Assessing tank structure, coatings, lids, insulation and warning of any defects.
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Disinfection (chlorination) – Filling the tank with a disinfectant solution to BS 8558 standards and circulating it through the system.
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Contact time and neutralisation – Allowing the disinfectant to work, then flushing the system with clean water.
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Certification and reporting – Providing a disinfection certificate and clear recommendations if further action is needed.
Most cleans can be completed within a few hours, depending on tank size, access, and system layout. A skilled team will keep disruption to a minimum while ensuring a fully compliant and thorough clean.
Explore Our Full Range of Services
Case Studies
Want to learn more about the kind of work we do? Well you're in luck, as our 'Case Studies' pages are the perfect way to explore some of the 700+ projects we deliver every year, offering a glimpse into the challenges we've faced and the innovative strategies our team have employed to deliver excellence for our customers.
Our Clients
Appointed on our reputation, retained on our results!
With over 75 years of water management experience, Team Titan have become trusted partners to some of the UK's leading corporate brands.
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