Water tanks are essential for delivering clean water in domestic and commercial settings. Without regular cleaning, tanks can harbor harmful microorganisms such as , posing serious health risks.

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Key Benefits of Routine Tank Maintenance:

• Prevent bacterial growth and biofilm formation,

• Remove sediment and organic matter,

• Maintain water quality and system efficiency,

• Ensure compliance with water hygiene regulations.

PM Technical Services provides expert inspection, cleaning, and disinfection of water tanks following and WRAS-approved methods.

 

Cold Water Tank Cleaning

Our services restore water safety and system integrity by:

• Inspecting and sanitising tank interiors,

• Removing biofilm, algae, and contaminants,

• Using chemical disinfection (chlorination) with controlled contact time,

• Flushing, neutralising, and refilling tanks with clean water,

• Providing post-cleaning sampling and a detailed job report.

 

Cleaning Procedure Overview:

1. Install safety signage

2. Isolate water supply

3. Drain tank and remove sediment

4. Scrub and sanitise interior surfaces

5. Partial refill and flush tank

6. Chlorinate and allow contact time

7. Neutralise excess chlorine

8. Final drain and refill

9. Reinstate system and remove signage

10. Conduct sampling and client handover

11. Issue detailed cleaning report

 

Preventing Bacterial Growth

Legionella proliferates in tanks due to:

• Stagnant water,

• Nutrient build-up (sediment, biofilm, algae),

• Temperatures between 20–45°C.

Regular cleaning and monitoring reduce the risk of outbreaks and maintain compliance with and HSE guidance.

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Property Types & Sectors Served

PM Technical Services provides tailored solutions for:

• Hospitals, care homes, schools, universities,

• Hotels, restaurants, retail spaces, leisure centres,

• Industrial and residential properties.

 

Compliance & Quality:

• Free quotations and technical advice,

• Services aligned with LCA code of conduct, ACOP L8, and HSG274,

• Certified engineers and detailed Legionella log books,

• Site-specific Method Statements and Risk Assessments,

• Optional staff training.

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Additional Considerations

We assess tank compliance with BS 8558:2015, reviewing:

• Physical condition and accessibility,

• Turnover rates and stagnation risks,

• Exposure to heat or environmental contaminants,

• Recommendations for remedial works or upgrades.

Early identification of issues ensures tanks are safe, efficient, and aligned with current water hygiene standards.

 

Regular inspection and cleaning are essential to prevent bacterial contamination and ensure safe, high-quality water.

PM Technical Services provides fast, reliable, fully certified tank cleaning and disinfection. Contact us for a free, site-specific quotation.