Project Description

Water Tank Disinfection

We carry out water tank disinfection to all size’s of tanks to a very high standard, water tanks need regular maintenance and are inspected on a 6 monthly basis to keep them safe. Water sampling can be done periodically to safeguard these systems.


Regular Water Tank Disinfection helps reduce and prevent biofilm buildup thus reducing bacteria counts and the risk of legionnaires diseases.
Sherpa can also install new water tanks where required.

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water tank disinfection

Legionella In Water Storage Tanks

Every year unsuspecting people inhale water droplets containing deadly bacteria and contract Legionnaires diseases. Water tanks can be a source of biofilm where legionella bacteria can breed if not properly maintained thus contaminating down services such as taps, toilets and showers. For this reason, cold water storage tanks should form part of the sites legionella risk assessment and legionella control policy where regular water tank disinfection is carried out.

Water Tank Disinfection Large

Do You Need Water Tank Disinfection?

ACOP L8 is the Health and Safety Executive document that gives recommendations for the control of Legionnaire’s Disease in water systems. It recommends that water tanks are inspected annually and if found to be dirty should be cleaned and then disinfected.

The following solution covers the procedure for disinfecting header tanks and if required, the down services. Whether disinfection is required on the down services, this will depend on the clients wishes and whether it is practical. If for example the down services are in a hotel which is in constant use then it will not be possible to disinfect unless the hotels water outlets have been shut down for maintenance.  The standard typically requires a concentration of 50 ppm Chlorine in constant contact for at least 1 hour or 20 ppm of chlorine for at least 2 hours.

  • Isolate cold water tank

  • Drain water tank and clean using chemicals

  • Disinfect water tank using chemicals

  • Disinfect lid and pipework if needed

  • Carry out complete system disinfection for a full system clean

  • Water samples are taken to an UKAS accredited laboratory for bacteria testing including legionella, TVC, E. coli


Water Tank Maintenance 100%
System Survey 100%
Legionella Tank Cleaning 100%
Downstream Chlorination Service 100%


Week Days 8:00 – 6:00
Saturday 9:00 – 5:00

01582 343116


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If you do not find the service you are looking for below, it’s more than likely we can cater for it, please give Sherpa Environmental a call on 01582 343116 to discuss.

Legionella Risk Assessments

We can carry out Legionella Risk Assessments of your water systems to make sure that you are compliant.

READ MORE – Legionella Risk Assessments

TMV Maintenance

We can carry out TMV Maintenance and Thermostatic Mixing Value Services to make sure that you are compliant.

READ MORE – TMV Maintenance

Legionella Awareness Training

Sherpa can help you increase Legionella Awareness with an engaging and interesting training session.

READ MORE – Legionella Awareness Training

Scheme Of Control

After the Risk Assessment has been completed, we can help produce a Written Scheme.

READ MORE – Scheme Of Control

Water Quality Testing

Where water condition is a concern, we can test water samples to determine water quality.

READ MORE – Water Quality Testing

Remedial Works

It is important that building owners help reduce risks by removing or replacing high risk components or pipework.

READ MORE – Remedial Works


Sherpa Environmental are accredited members of the LCA, and are regularly audited and inspected by them to ensure we are working to high standards.
Modern law can be confusing and places a lot of pressure on building owners to comply with government regulations, particularly around Legionella. To help, Sherpa guarantee a wide range of services that are designed to offer a complete water hygiene solution. This means we can survey, assess the risks and help design a solution for you, reducing or eliminating the risks entirely. Sherpa works with a Solutions Partner philosophy, giving you sound advice to help you manage your water hygiene risks within your building or portfolio, all at cost effective rates. We guarantee to:

  • Abide by the Legionella Control Associations Code Of Practice

  • Comply with ISO9001

  • Comply with ISO14001

  • Compliance with Safe Contractor health and safety

  • Offer great value for money

  • All our work!


Do you need help with water hygiene? Fill out this form to get in touch.




    9:00am – 6:00pm


    01582 343116


    01582 343116


    9:00am – 6:00pm