London & South East Specialist

Water Tank
Cleaning & Disinfection

Dedicated to protecting your health and the environment with expert BS8558-compliant sanitation services for commercial and domestic systems.

BS8558 Compliant
Fully Insured
London & South East
Certified Technicians
Environmentally Responsible

Professional Water Tank Cleaning & Disinfection Services

H2O Comply provides specialist water tank cleaning and disinfection services for commercial and domestic systems across London and the South East.

Our experienced technicians work in full accordance with BS8558 and HSG274 guidance , ensuring your stored water remains safe, compliant, and fit for purpose.

From routine maintenance to post-incident disinfection, we deliver reliable, documented solutions tailored to your site and usage.

Why Water Tank Hygiene Matters

Poorly maintained water storage systems can harbour bacteria, sediment, and biofilm, increasing the risk of contamination and system failure.

Regular inspection, cleaning, and disinfection reduces health risks, protects downstream equipment, and helps demonstrate compliance with current water safety legislation.

Disinfection Methods

Every site is different. We select the safest, most effective method based on your tank type, access, usage, and risk profile, then provide clear documentation for compliance.

Chlorination

Reliable, widely used disinfection

A proven method for eliminating bacteria and viruses in stored water systems. Water tank chlorination is ideal for routine disinfection, post-incident response, and recommissioning.

Best for

General disinfection, post-outage recovery, recommissioning, and ongoing hygiene control.

Process

Dose, circulate, contact time, neutralise (where required), flush, then verification checks.

Documentation

Method statement, readings, contact time record, completion notes and recommendations.

Silver Stabilised Hydrogen Peroxide

Lower odour, material-friendly option

A strong oxidising disinfectant often chosen where reduced taste/odour is important or where certain materials benefit from an alternative to chlorine-based treatment.

Best for

Sites wanting a non-chlorine option, sensitive environments, and systems requiring a gentler approach.

Advantages

Typically less noticeable odour, effective biofilm disruption, and good compatibility across many systems.

Documentation

Application notes, concentrations used, contact time record, and next-step recommendations.

A Risk-Based, Not One-Size-Fits-All Approach

No two water systems are the same. Tank size, usage patterns, temperature control, and historical sampling all influence our choice of method.

Condition System contamination level
User Base Occupancy & vulnerability
Legalities HSG274 & ACoP L8
Logistics Operational constraints

Efficient Thermal Disinfection

Our thermal disinfection procedures are not only efficient but also environmentally responsible, reducing the risk of cross-contamination and leaving no chemical residue behind.

By relying purely on controlled heat, we eliminate harmful bacteria while ensuring your system remains safe, compliant, and fit for use. Suitable for both residential and commercial hot water systems.

Previous Work

Here are real examples of what we find inside poorly maintained water tanks. Buildup, damage, and contamination risk are common issues that routine tank cleaning and disinfection can prevent.

Dirty water tank showing internal damage and contamination
Internal Damage Wear, damage and debris can compromise water quality and system integrity.
Contaminated water tank interior with visible buildup
Contamination & Buildup Sediment and biofilm can develop over time, increasing risk and reducing performance.
Dirty water tank before cleaning with visible residue and sediment
Before Cleaning Typical pre-clean condition we resolve with cleaning, disinfection and documentation.

Sectors We Work With

We deliver water tank cleaning and disinfection services across a wide range of environments, tailoring our approach to suit each setting.

Commercial Buildings
Healthcare & Care Homes
Education
Hotels & Leisure
Industrial Sites
Residential Properties
Storage & Distribution
Utilities & Infrastructure

“Highest quality of works and very good customer service. Helped our site from tank cleans/new installs/ repairs everything we’ve needed doing they have been spot on with…even with specialist pipework no one would help us with. Always willing to go the extra mile and we wouldn’t use anyone else.”

Rated 5 out of 5