Tank Cleaning & Chlorination: A Complete Guide for Landlords & Facility Managers

If you’re a landlord or facilities manager, you’ve likely got a lot on your plate. But one thing you can’t afford to ignore is the cleanliness of your water tanks. Whether you’re managing a residential block, a hotel, a school or an office complex, regular tank cleaning and chlorination is essential — not just for compliance, but for health, safety, and peace of mind.

Why Tank Cleaning Matters
Water tanks play a vital role in storing and supplying clean water throughout a building. Over time, they can accumulate debris, sediment, algae, or even harmful bacteria like Legionella. If left untreated, this can lead to water contamination, unpleasant odours, and serious health risks for tenants or staff.

At NT Cloke Pumps & Water, we work with landlords and facilities teams across the UK to deliver professional tank cleaning and chlorination services — keeping systems compliant and safe, all year round.

What’s Involved in a Professional Tank Clean & Chlorination?

A proper clean and chlorination isn’t just about draining the tank and giving it a rinse. Here’s what you can expect from a professional service like ours:

• Full system inspection
• Safe draining and removal of sludge, scale, and debris
• Deep cleaning of internal surfaces
• Disinfection of the tank using a safe chlorination solution
• Refill and flushing of the entire system
• Certification for compliance

This process ensures water quality is fully restored, helping you meet your legal responsibilities as a building owner or manager.

Who Needs It — And How Often?

• Landlords – Especially for HMOs, student housing, and blocks of flats
• Schools & Nurseries – Where young or vulnerable people may be exposed to water systems
• Hotels, Gyms & Spas – High usage systems where hygiene is critical
• Commercial Properties – Offices, warehouses, and industrial units with storage tanks

The recommended frequency for tank cleaning and chlorination is every 6–12 months, depending on system use and your water hygiene risk assessment.

What Are the Risks of Not Cleaning Your Water Tank?

Neglecting regular tank maintenance can lead to:

• Legionella outbreaks
• Water supply contamination
• Legal action and fines
• Loss of tenant trust or business disruption

In short: it’s not worth the risk.

Why Choose NT Cloke Pumps & Water?

We’re trusted by housing associations, letting agents, and FM teams across the UK. Whether you need a one-off clean or regular scheduled servicing, we bring:

• Decades of experience
• Full certification and compliance
• Rapid UK-wide response
• Expertise in water hygiene, pump systems and pressurisation units

Get Ahead of the Problem

Don’t wait until you’re dealing with murky water or a compliance issue. Preventative maintenance is cheaper, safer, and smarter.

Frequently Asked Questions

1. How often should water tanks be cleaned and chlorinated?

Water tanks should be professionally cleaned and chlorinated every 6 to 12 months, depending on usage and water hygiene risk assessments.

2. Do landlords have to clean water tanks by law?

Yes, under the Health and Safety at Work Act and COSHH regulations, landlords must ensure water systems are safe from bacteria like Legionella — which includes regular tank maintenance.

3. What does a tank chlorination service include?

Tank chlorination typically includes system inspection, sludge removal, internal tank cleaning, disinfection with chlorination solution, flushing, and certification.

4. Can NT Cloke provide ongoing maintenance contracts?

Absolutely. NT Cloke Pumps & Water offers planned preventative maintenance (PPM) contracts for landlords and facilities managers across the UK.

5. What are the signs your water tank needs cleaning?

Signs include discoloured water, bad odours, reduced water pressure, or visible sediment in the tank. If you’re unsure, NT Cloke can carry out an inspection.

Need a quote or want to book your next tank clean?

Contact NT Cloke Pumps & Water today — and keep your system safe, certified, and running like clockwork.