Green Water Services provides professional cold water storage tank cleaning and disinfection services for domestic and commercial properties. Based in the Midlands and trusted by clients across the UK, we help ensure your water systems are safe, compliant, and free from harmful bacteria, including Legionella. Here’s why our water tank disinfection services can benefit your employees, and therefore, your business.
Whether you operate a care home, school, warehouse, office block, or manage residential buildings, regularly inspecting and cleaning your cold water storage tanks is critical. It’s not just about compliance – it’s about protecting people.
Why is cold water tank cleaning essential?
If left unchecked, cold water storage tanks can quickly become breeding grounds for harmful bacteria. Over time, sediment, scale, stagnation, and other debris can accumulate, creating ideal conditions for the growth of Legionella, the bacteria responsible for Legionnaires’ disease; a potentially fatal type of pneumonia.
Poor tank design, lack of maintenance, or infrequent outlet use can also accelerate the problem, especially in larger systems where water may sit undisturbed for extended periods.
This risk is exceptionally high in buildings with vulnerable occupants, such as hospitals, care facilities, and schools. In commercial settings, landlords and property managers have a legal duty of care to manage this risk under the Health and Safety at Work Act and ACoP L8 guidelines.
What does our cold water tank cleaning service include?
Our cold water tank cleaning service begins with a full inspection to identify any signs of contamination, corrosion, or damage. We then completely drain the tank, safely removing all stored water to allow thorough access. Our technicians perform manual and mechanical cleaning to eliminate sediment, scale, and biofilm build-up.
Once the tank is cleaned, we disinfect all internal surfaces using approved biocides to ensure complete sanitisation. The tank is then refilled and recommissioned, ready for safe use. We will also carry out post-clean chlorination or flushing of the connected distribution pipework if necessary.
You will receive full documentation and certification of the completed works within 48 hours, or sooner if needed. We can also offer UKAS-accredited water sampling to support ongoing water hygiene monitoring.
All work is carried out per recognised British Standards, including BS EN 806-5:2012, BS 8558:2011, and BS PD 855468:2015, giving you complete peace of mind that you’re meeting compliance requirements.
When should cold water tanks be cleaned?
Industry guidance recommends that cold water storage tanks be inspected every six months as part of a routine water hygiene programme. Cleaning should be done if there is any visible contamination, such as sediment or corrosion, or if water quality tests return unsatisfactory results. Tanks should also be cleaned and disinfected after any significant changes to the system, such as new pipework or system modifications.
If Legionella bacteria are detected through sampling, a complete system clean may be required to prevent the risk of further spread. Buildings that have experienced periods of low occupancy, such as schools during holidays or offices after hybrid working changes, may also require flushing and cleaning to address stagnation.
Importantly, cleaning schedules should be defined as part of your Legionella Risk Assessment. Our experts can advise on appropriate inspection and maintenance intervals based on your property type and usage if you’re unsure.
What types of properties do we work with?
We work across various sectors and property types, including commercial offices and business parks, residential apartment blocks, healthcare facilities, educational institutions, industrial units, leisure centres, hospitality venues, and public buildings. No matter the complexity or scale of your system, we tailor our services to suit your specific operational needs and compliance responsibilities.
Why choose Green Water Services for water disinfection services?
As a Midlands-based company, we’re proud to offer a responsive, knowledgeable service to clients across the region and beyond. Our fast turnaround times mean you can expect full certification typically within 48 hours of the clean, helping you stay on top of compliance requirements.
We deeply understand relevant regulations and work closely with facilities managers, landlords, and business owners to deliver reliable, cost-effective solutions.
Our flexible approach means we can schedule work to suit your site and minimise disruption to operations. Most importantly, we believe in clear, straightforward communication from the initial quote to the final handover, so you always know where you stand.
We don’t just clean tanks, we deliver complete peace of mind that your water system is being maintained to the highest standards.
Book your cold water tank cleaning today.
If you’re responsible for water hygiene in your building, don’t leave it to chance. Contact Green Water Services for professional cold water tank cleaning and expert support. We’ll help you keep your system clean, compliant, and under control.
Green Water Services – Keeping your water clean and your systems safe.
