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Water hygiene services

Water tank cleaning.

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Our services

Water tank cleaning services

Water tank cleaning and disinfection are essential parts of maintaining safe, compliant water systems. Over time, water storage tanks accumulate debris, scale, biofilm, and other contaminants that can promote the growth of harmful bacteria, including Legionella. Regular cleaning and chlorination help protect against these risks while ensuring your systems remain compliant with HSE ACoP L8 and BS8558:2019 standards.

At ARA Environmental, we provide comprehensive water tank cleaning, disinfection, and chlorination services to safeguard water quality, reduce contamination risk, and help you meet your legal obligations. Our fully trained and Legionella Control Association (LCA) accredited technicians deliver work to the highest standards, ensuring your water systems remain safe, efficient, and fully compliant.

Our memberships and accreditations
  • CSA logo
  • Legionella control association logo
  • CHAS logo
  • Reset member company logo
  • Facilities line gold member logo
  • BSRIA logo
  • LPCB UKAS ISO 9001 logo
  • Safe contractor logo
  • acclaim accrediation logo
  • Construction online logo
Why choose Complii?

How we can help.

Protect your people, property, and business. Here’s why we’re the right choice for water tank cleaning and disinfection.Routine cleaning and disinfection remove biofilm, sludge, and deposits that support bacterial growth, preventing Legionella contamination and waterborne disease.

Protects against Legionella and other bacteria

Routine cleaning and disinfection remove biofilm, sludge, and deposits that support bacterial growth, preventing Legionella contamination and waterborne disease.

Maintains water quality and safety

Our cleaning process keeps your stored water clean, clear, and safe for use by removing discolouration, odours, and microbial build-up.

Ensures legal and regulatory compliance

All cleaning and chlorination procedures are carried out in line with HSE ACoP L8, BS8580-1:2019, and BS8558:2019, giving you full compliance assurance.

Improves system efficiency

Removing scale and sediment helps your water system operate efficiently, extending equipment life and reducing operational costs.

Provides assurance through testing and reporting

We conduct pre- and post-clean sampling through UKAS-accredited laboratories, verifying the cleaning results and providing complete compliance documentation.

Minimises disruption to your operations

Our experienced technicians plan every project carefully to reduce downtime, working around your schedule to complete cleaning with minimal impact.

Your questions answered.

  • Tanks should be inspected at least once a year and cleaned when there is evidence of contamination, stagnation, or bacterial growth.

  • Yes. Post-clean sampling confirms the absence of Legionella, E. coli, and other bacteria, verifying that your system is safe and compliant.

  • In most cases, yes. We schedule works to minimise downtime and can complete cleaning during off-peak hours where required.

  • All work follows HSE ACoP L8, BS8580-1:2019, and BS8558:2019, which define the safe management and control of Legionella in water systems.

  • Yes. You will receive a detailed report, sampling results, and certification confirming compliance with UK water hygiene regulations.

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Compliance with confidence.

Get in touch for a tailored quotation that fits your site’s needs.