Water Sampling & Testing

ACOP L8 requires that Legionella samples are taken from all cooling towers on a quarterly basis and that the biological quality or Total Viable Count (TVC) of the cold water feed to the cooling tower is tested quarterly.

It is also considered best practice, and many Environmental Health Officers also request that, monthly biological quality samples be taken from cooling towers.

Again, although not a legal requirement, it is also considered best practice to carry out a six monthly analysis of TVC, E.Coli and Coliforms of all cold water storage tanks which supply drinking water.

What are the benefits?

Regular biological monitoring of a building’s water services can be of benefit in the following ways:

  • Detailed trend analysis to aid in the better management of the water systems;
  • Highlights minor issues with the water quality/water hygiene before they escalate into more serious widespread problems;
  • Ensures peace of mind and increased confidence that the water management and water hygiene control programs are working effectively on site;
  • Provides a tool to report positive compliance to clients and other stakeholders.
How can the S2 Partnership help?

An experienced and trained water consultant will attend site as requested to take water samples from locations as determined by the legionella risk assessment or following discussions with the client as to which systems/locations require sampling. Water sampling will follow the guidelines outlined in standard Operating Procedure SOP_W1.

As part of your obligations to comply with current legislation and codes of practice governing the control and management of legionella (COSHH, RIDDOR, HSWA, MHSWA, Notification of Cooling Towers and Evaporative Condensers Regulations, ACOP L8). The following is required from clients for water systems that they manage:

  1. The need to carry out a suitable and sufficient risk assessment
  2. The need to prepare a scheme for preventing or controlling the risk
  3. The need to implement, manage and monitor precautions
  4. The need to keep records of the precautions
  5. The need to appoint a person to managerial responsibility

It is the client’s responsibility to maintain all records pertinent to the control of legionella on-site and to determine where these records will be kept. Records are to be maintained for a period of five years.

The S2 Partnership can provide comprehensive monitoring/sampling program for all buildings water services to include:

  • Quarterly Legionella analysis of cooling towers (this can specifically target problem areas such as dead-legs or little used plant);
  • Quarterly microbiological analysis of cooling tower make-up water;
  • Six monthly TVC, E.coli and Coliform analysis of cold water storage tanks which supply drinking water;
  • One off analysis of any system or outlet to try and identify trends or highlight possible problems on site;
  • Emergency sampling in the event of a suspected case of Legionnaires’ disease;
  • Follow up reporting to clearly explain the meaning of all laboratory results obtained and to help site find the most cost effective solutions when sample results are non-compliant.

For clients subscribing to RiskWise, reports (including any logsheets and actions) are uploaded directly to RiskWise, prompting an email notification to the site representative of the new report being available.

For clients without RiskWise, reports are issued directly by email to the client representative with the option of hard copies being posted on request.

The S2 Partnership is a member of the Legionella Control Association, delivering key services including risk assessments, consultancy, training and analytical services.

The S2 Partnership Registration Certificate can be viewed here. To see a current copy of the Legionella Control Association Code of Conduct which S2 Partnership complies with please click here.

Please contact us for more information.