Keep Your Water Supply Safe with Professional Tank Cleaning, Chlorination & Water Samples
At GW Pumps, we ensure your water tanks and systems remain clean, compliant, and safe for use with our specialist cleaning and chlorination services. Over time, water storage tanks can accumulate sediment, biofilm, and bacteria such as Legionella — posing serious health and compliance risks. Our expert team carries out thorough cleaning, disinfection, and chlorination to industry standards, protecting both potable and process water supplies. Whether you manage a commercial building, residential complex, school, or healthcare facility, we’ll help you maintain high water quality, meet legal requirements, and protect the people who rely on your water systems.
How Our Water Tank Cleaning, Chlorination & Water Samples Process Works
Keeping your water systems safe starts with a clear, thorough process. At GW Pumps, we follow a proven method to ensure your tanks are cleaned, disinfected, and fully compliant:
- Initial Site Survey & Risk Assessment We inspect your water storage tank, pipework, and associated systems to assess condition, identify contamination risks, and determine the correct cleaning and chlorination approach.
- Drain Down & Physical Cleaning Water is safely drained, and the tank is manually cleaned to remove scale, sediment, biofilm, and any visible contamination. We use specialist equipment to reach all surfaces.
- Chlorination & Disinfection The system is treated with the correct strength chlorine solution to kill harmful bacteria, including Legionella. This process follows current Water Supply (Water Fittings) Regulations and HSE guidance.
- Flush Through & Refill Once disinfection is complete, the system is thoroughly flushed to remove any remaining cleaning solution, then refilled with fresh water ready for safe use.
- Certification & Compliance Documentation We provide full certification confirming your tank has been cleaned and chlorinated in accordance with legal and industry standards — giving you peace of mind for audits and inspections.
Why You Might Need Water Tank Cleaning, Chlorination & Water Samples
- Legionella Control Compliance To meet legal requirements for Legionella risk management and protect public health in line with HSE guidelines.
- Removal of Sediment & Biofilm To eliminate the build-up of debris, rust, and organic matter that can affect water quality and safety.
- Prevent Bacterial Growth To stop harmful bacteria multiplying in stagnant or contaminated water storage tanks.
- Maintain Water Quality To ensure clean, clear, and safe water for drinking, food preparation, or industrial use.
- Meet Insurance & Audit Standards To provide certification for inspections, insurance purposes, and health & safety audits.
Why Choose GW Pumps for Water Tank Cleaning & Chlorination?
With over 15 years of experience in water and wastewater management, we’re trusted by businesses, public sector organisations, and facilities managers across Yorkshire and beyond. Our in-house team is fully trained, accredited, and insured, giving you confidence that every clean and chlorination is carried out to the highest safety and compliance standards. We work with all leading water system manufacturers, allowing us to service, repair, and maintain a wide range of tanks and associated pumping equipment. Every project we complete comes with clear documentation and certification, so you can meet your legal obligations with ease.
A few sectors we continue to support with tank cleans & chlorinations
- Facilities Management Companies – managing multiple buildings and ensuring all water storage systems remain safe and compliant.
- Healthcare Facilities – including hospitals, clinics, and care homes where water hygiene is critical for patient safety.
- Education Providers – schools, colleges, and universities requiring regular tank cleaning to protect students and staff.
- Hospitality & Leisure – hotels, gyms, and leisure centres maintaining safe water for guests and members.
- Industrial & Manufacturing Sites – facilities using stored water for production processes or site operations.
Frequently Asked Questions
How often should a water tank be cleaned and chlorinated?
For most commercial and public sector sites, water tanks should be cleaned and chlorinated at least once a year, or more frequently if water testing shows signs of contamination. Regular cleaning helps meet water hygiene regulations and ensures safe water for all users.
Why is chlorination important after cleaning a water tank?
Chlorination kills harmful bacteria, including Legionella, that can develop in stagnant or poorly maintained tanks. It provides an additional layer of protection, ensuring your water supply meets legal safety standards.
Do you provide water tank cleaning services across Yorkshire?
Yes – GW Pumps operates throughout Yorkshire, including Leeds, Sheffield, York, Bradford, Hull, and surrounding areas. Our engineers are fully trained to work on tanks of all sizes for commercial, industrial, and public sector clients.
Can you clean and chlorinate large industrial water tanks?
Absolutely – our team has experience with everything from small domestic storage tanks to large industrial and multi-site water systems. We use specialist equipment to ensure a thorough clean and safe disinfection process.
Will my water supply be disrupted during cleaning and chlorination?
Some downtime may be required, but we work with you to plan the job at the most convenient time. In many cases, we can set up temporary water supplies to minimise disruption to your operations.
Our Process
How it Works
When Working With Us
Consultation
We discuss your site, water system setup, and compliance requirements to understand exactly what’s needed.
Site Assessment
We inspect your water tanks, test water quality, and identify any hygiene risks that need to be addressed.
Clean & Chlorination
We carry out a thorough clean, removing scale and debris before disinfecting the system to industry standards.
Certification & Reporting
We provide full documentation for compliance records, including cleaning reports and chlorination certificates.
Consultation
We discuss your site, water system setup, and compliance requirements to understand exactly what’s needed.
Site Assessment
We inspect your water tanks, test water quality, and identify any hygiene risks that need to be addressed.
Clean & Chlorination
We carry out a thorough clean, removing scale and debris before disinfecting the system to industry standards.
Certification & Reporting
We provide full documentation for compliance records, including cleaning reports and chlorination certificates.
Contact Us
Get In Touch
Our team aims to reply to all enquiries within 1 working day
