Water Tank Cleaning and System Disinfection

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Professional Water Hygiene Solutions You Can Trust

Keeping your water tanks and systems clean is essential for maintaining water hygiene and preventing the growth of harmful bacteria such as Legionella. At Bespoke Compliance Solutions, we provide expert water tank cleaning and system disinfection services to help landlords, facilities managers, and duty holders meet their legal responsibilities and protect the health of occupants.
Our fully trained engineers use industry-approved techniques and disinfection chemicals to thoroughly clean and sanitise tanks, pipework, and water systems, ensuring compliance with HSE ACOP L8 and HTM 04-01 guidelines.

Why Water Tank Cleaning and Disinfection is Important

Over time, water storage tanks and distribution systems can accumulate:

Scale and sediment
Sludge and biofilm
Corrosion and debris
Harmful bacteria including Legionella

These conditions create an environment where bacteria can thrive, increasing the risk of contamination and waterborne illnesses. Regular water tank cleaning and disinfection is a vital part of any water hygiene management plan.

When Should Water Systems Be Cleaned?

According to HSE guidance, cleaning and disinfection should be carried out:

After installation of a new system
Following significant modifications or repairs
When routine monitoring indicates contamination
If the system has been out of use for a long period
As part of ongoing maintenance where risk assessments highlight the need

Our Water Tank and System Cleaning Services

Water Tank Cleaning - We provide a full cleaning service for cold water storage tanks, removing sediment, scale, and debris before disinfecting to ensure the system is safe and compliant.

System Disinfection - Our engineers disinfect entire hot and cold water systems using approved biocides or chlorination, flushing thoroughly to eliminate bacteria and restore water hygiene.

Remedial Works - If cleaning identifies structural issues such as damaged tank linings, corroded fittings, or redundant pipework, we can carry out remedial works to restore system integrity and reduce risks.

Certification & Compliance

Following cleaning and disinfection, we provide a detailed certificate of completion and compliance report for your records and auditing requirements.

Example of a dirty & clean Cold Water Storage Tank

Does you tank need fixing or replacing?

A damaged or ageing cold water tank can pose serious risks to water quality and increase the chance of Legionella growth. At Bespoke Compliance Solutions, we provide professional cold water tank replacement and repair services, ensuring your system remains safe, efficient, and fully compliant with HSE ACOP L8 guidance. Whether it’s fixing leaks, upgrading old tanks, or installing new systems, our engineers deliver reliable solutions to protect your water supply and occupants.

Request a Quotation

Why Cold Water Storage Tanks Pose a Risk

Cold water storage tanks are common in many residential, commercial, and industrial buildings. While they provide a reliable supply of water, they can also create the perfect environment for Legionella bacteria to grow if not properly maintained. Poorly designed, damaged, or neglected tanks can accumulate sediment, scale, and biofilm — all of which encourage bacterial growth and compromise water quality.

How Legionella Develops in Cold Water Tanks - Legionella bacteria thrive in conditions where:

Water temperatures are between 20°C and 45°C
Stagnation occurs due to low water turnover
Nutrients are present, such as rust, scale, or sludge
Lids, insulation, or tank linings are damaged, allowing contamination

If these risks are not managed, bacteria can multiply within the tank and spread throughout the water system, increasing the risk of Legionnaires’ disease — a serious and potentially fatal lung infection.

Common Risks of Cold Water Storage Tanks

Stagnant water – poor turnover or oversized tanks allow bacteria to multiply.
Debris and sediment – create food sources for bacteria.
Corrosion and scale – damage system integrity and promote biofilm growth.
Unsecured lids or damaged linings – allow dirt, vermin, and other contaminants to enter.
Inadequate insulation – water may rise into the danger temperature zone (20–45°C).

Preventing Legionella in Cold Water Tanks - To control the risks associated with cold water storage tanks, regular inspection, cleaning, and maintenance are essential. Best practices include:

Carrying out a Legionella risk assessment to identify and manage risks.
Inspecting tanks for signs of damage, leaks, or poor insulation.
Cleaning and disinfecting tanks regularly to remove scale, sludge, and biofilm.
Replacing or repairing old, corroded, or poorly designed tanks.
Monitoring water temperatures and turnover to prevent stagnation.

How Bespoke Compliance Solutions Can Help - We specialise in cold water tank compliance and Legionella control, offering:

Cold water tank inspections and risk assessments
Professional cleaning and disinfection services
Cold water tank replacement and repair
Legionella water testing and monitoring
Ongoing maintenance contracts for compliance peace of mind

Our expert engineers follow HSE ACOP L8 and HSG274 guidance to ensure your water systems remain safe, compliant, and bacteria-free. Protect Your Occupants and Stay Compliant.

Cold water storage tanks, if left unchecked, can pose a serious risk to health and compliance. With the right management and professional support, these risks can be effectively controlled.

Water Tank Cleaning and System Disinfection

Professional Water Hygiene Solutions You Can Trust

Why Water Tank Cleaning and Disinfection is Important

Over time, water storage tanks and distribution systems can accumulate:

​

Scale and sediment

Sludge and biofilm

Corrosion and debris

Harmful bacteria including Legionella

​

These conditions create an environment where bacteria can thrive, increasing the risk of contamination and waterborne illnesses. Regular water tank cleaning and disinfection is a vital part of any water hygiene management plan.

When Should Water Systems Be Cleaned?

According to HSE guidance, cleaning and disinfection should be carried out:

After installation of a new system

Following significant modifications or repairs

When routine monitoring indicates contamination

If the system has been out of use for a long period

As part of ongoing maintenance where risk assessments highlight the need

​

Our Water Tank and System Cleaning Services

Water Tank Cleaning - We provide a full cleaning service for cold water storage tanks, removing sediment, scale, and debris before disinfecting to ensure the system is safe and compliant.

System Disinfection - Our engineers disinfect entire hot and cold water systems using approved biocides or chlorination, flushing thoroughly to eliminate bacteria and restore water hygiene.

Remedial Works - If cleaning identifies structural issues such as damaged tank linings, corroded fittings, or redundant pipework, we can carry out remedial works to restore system integrity and reduce risks.

Certification & Compliance

Following cleaning and disinfection, we provide a detailed certificate of completion and compliance report for your records and auditing requirements.

Does you tank need fixing or replacing?

Request a Quotation

Why Cold Water Storage Tanks Pose a Risk

How Legionella Develops in Cold Water Tanks - Legionella bacteria thrive in conditions where:

​

Water temperatures are between 20°C and 45°C

Stagnation occurs due to low water turnover

Nutrients are present, such as rust, scale, or sludge

Lids, insulation, or tank linings are damaged, allowing contamination

​

If these risks are not managed, bacteria can multiply within the tank and spread throughout the water system, increasing the risk of Legionnaires’ disease — a serious and potentially fatal lung infection.

Common Risks of Cold Water Storage Tanks

​

Stagnant water – poor turnover or oversized tanks allow bacteria to multiply.

Debris and sediment – create food sources for bacteria.

Corrosion and scale – damage system integrity and promote biofilm growth.

Unsecured lids or damaged linings – allow dirt, vermin, and other contaminants to enter.

Inadequate insulation – water may rise into the danger temperature zone (20–45°C).

​

Preventing Legionella in Cold Water Tanks - To control the risks associated with cold water storage tanks, regular inspection, cleaning, and maintenance are essential. Best practices include:

​

Carrying out a Legionella risk assessment to identify and manage risks.

Inspecting tanks for signs of damage, leaks, or poor insulation.

Cleaning and disinfecting tanks regularly to remove scale, sludge, and biofilm.

Replacing or repairing old, corroded, or poorly designed tanks.

Monitoring water temperatures and turnover to prevent stagnation.

​

How Bespoke Compliance Solutions Can Help - We specialise in cold water tank compliance and Legionella control, offering:

​

Cold water tank inspections and risk assessments

Professional cleaning and disinfection services

Cold water tank replacement and repair

Legionella water testing and monitoring

Ongoing maintenance contracts for compliance peace of mind

​

Our expert engineers follow HSE ACOP L8 and HSG274 guidance to ensure your water systems remain safe, compliant, and bacteria-free. Protect Your Occupants and Stay Compliant.

Cold water storage tanks, if left unchecked, can pose a serious risk to health and compliance. With the right management and professional support, these risks can be effectively controlled.