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Our services

Tank & System Disinfection

Cleaning and disinfection of tanks, cylinders and whole water systems, carried out in line with ACoP L8 and BS 8558:2015.

  • Cold water storage tank cleaning
  • Full hot and cold system disinfection
  • Calorifier and water heater descaling
  • Disinfection certificate and logbook update
Tank & System Disinfection

Ensuring your water system is clean is an essential element of preventing the growth of legionella and other dangerous bacteria. Where water is stored e.g. tank in a loft or hot water cylinder the risk of legionella bacteria growth is higher. Areas where water is stored increases the chance of bacteria growth and multiplication; systems with stored water need to be careful monitored and maintained to ensure all control measures are being carried out to lower the risk. We offer a full range of cleaning and disinfection services including:

  • Cold water storage tank cleaning & disinfection
  • Full disinfection of hot and cold water systems
  • Mains water system disinfection and dosing
  • Calorifier & water heater disinfection and descale

Our cleaning and disinfection services are carried out in accordance with ACoP L8 and BS 8558:2015 which states that cleaning and disinfection should be carried out when the following occurs:

  • New water system installations or refurbishment of hot and cold water systems
  • Installation of new components
  • Systems that have been out of use for long periods of time
  • Evidence of contamination or stagnation in tanks
  • Substantial alterations to the systems
  • Following sample results indicating contamination
  • During or following an outbreak of legionella
  • Where indicated by the risk assessment

We will update the site log book and issue disinfection certification quickly after the works are completed, ensuring all measures are carried out in full and all required information is recorded efficiently.

Contact Us

Fill in our online enquiry form to receive a free quote.

How it works

From first call to a compliant building

A clear, simple process, with a bespoke report at the end of it.

  1. 1

    Tell us about your building

    Send the form or call us. We reply with a quote and our availability.

  2. 2

    Full site survey

    An assessor surveys your water systems, from the supply into the building to the drain.

  3. 3

    Checked, bespoke report

    Your report and schematic drawings are checked by our QC management team.

  4. 4

    Stay compliant

    Delivered as a PDF or printed copy, with monitoring, sampling and remedial works if you need them.

Also from Envirisk

Our other services

Legionella Risk Assessment

A complete survey of your premises by a qualified assessor, then a bespoke report that shows your level of risk and exactly what to do about it.

  • Full site survey of your water systems
  • Risk rating and recommendations
  • Asset register and schematic drawings
  • A scheme of control to follow

Find out more

Monitoring Services

Routine monitoring that keeps your water system compliant with ACoP L8 and HSG274, from monthly site visits to annual audits.

  • Monthly water system monitoring
  • Quarterly shower and spray outlet descaling
  • Tank, cylinder and TMV checks
  • Site logbook, also available electronically

Find out more

Remedial Works & Servicing

Skilled engineers to put right the faults and risks found in your water system or raised by your risk assessment.

  • Remedial works raised by risk assessments
  • Servicing and maintenance of plant and fittings
  • TMV servicing
  • Systems left compliant, safe and efficient

Find out more

Water Sampling

Water samples tested in UKAS accredited laboratories, taken by our engineers on site or with a DIY postal kit.

  • UKAS accredited laboratories
  • Legionella, TVC, Coliforms, E. coli and Pseudomonas
  • On-site sampling or a postal kit
  • Positive results reported immediately

Find out more

Get a free, no-obligation quote

Tell us about your building and we'll reply with a quote and our availability.

CallFree quote