Water Hygiene Management Review

Has a 'responsible person' been designated?

Is there a designated deputy responsible person?

Are contact details for these people readily available?

Are the roles and responsibilities for these people clearly defined?

Have the people involved in the management process had suitable training?

Are all contractors involved in the management process clearly identified?

Is the scope of work for each contractor clearly defined?

Has contractor competency been checked?

Have all other H&S issues related to water treatment management processes been considered?

Are there any cooling towers at the building?

Has the cooling tower(s) been notified to the local authority?

Is there a written scheme for controlling the risk from exposure to legionella bacteria

Does the scheme contain an up-to-date plan of the system (a schematic plan is acceptable)?

Does the scheme contain instructions for operating the system?

Does the position of the cooling tower affect:

Is the cooling tower constructed from impervious materials?

Are drift eliminators fitted?

Are they:

Is the area above the pond as enclosed as possible?

Are all visible surfaces free from:

Does the water flow evenly across the fill pack?

Have all of the folowing been removed as far as possible:

Are all those parts of the tower that become wet, acessible and/or removable for cleaning?

Is the system in regular operation?

Are there procedures in place to operate standby equipment on a rotational basis?

Is there an operations manual for the cooling system?

If the tower is not in regular use, is it run once a week to circulate the treatment chemicals to all parts of the system?

If the tower is out of use for longer than a week, are there procedures in place to bring the tower back into operation safely?

Is there a water treatment programme in place?

Are chemicals/biocides used to control:

If non-oxidising biocides are used, are two types used alternately?

Are chemicals dosed automatically?

If yes, are the pumps calibrated regularly?

Is there a daily check to make sure that the system is operating as per the operations manual?

Is there a daily visual check of the cleanliness of the water in the system?

Is the physical condition of the system checked at least every week?

Is the chemical composition of the cooling and make-up water monitored on a regular basis?

Are the safe operating limits for each parameter which is being measured, known and recorded in the Water Treatment Log Book?

Is the corrective action for out of limits situations recorded in the Water Treatment Log Book?

Are the results of all tests and checks recorded?

Are details of all remedial actions taken, recorded in the Water Treatment Log Book?

Are dip slides taken on a weekly basis?

Do the dip slides undergo the correct incubation process?

Are results recorded so that trends over time can be identified?

Are samples taken quarterly, to test for legionella?

Has there been a need to test more frequently due to elevated readings?

Is there a written procedure for regular cleaning and disinfection of the system?

Does this take place at least every 6 months?

Does the cleaning and disinfection include:

If packs cannot be removed, are there alternative methods of making sure that they remain clean in place?

Type of system:

Is there a written scheme for controlling the risk from exposure to legionella bacteria?

Does the scheme contain an up to date plan of the system (a schematic is acceptable)?

Does the scheme contain instructions for the operation of the system?

Does the scheme contain details of the precautions to be taken to control the risk of exposure to legionella bacteria?

Does the scheme contain details of the checks that are to be carried out (and their frequency) to ensure that the scheme is effective?

Are low corrosion materials used?

Are TMV's fitted in the system?

Are the TMV's fitted as close to the point of use as possible?

Are low use outlets installed upstream of higher used outlets?

Has the amount of cold water storage been assesed and minimised, i.e. holds enough water for a day's use only?

Is pipework insulated, and kept as far away from heat sources as possible?

Is the cold water tank:

Does the calorifier storage capacity meet normal daily fluctuations in hot water use while maintaining a supply temperature of at least 50°C?

Are the hot water distribution pipes insulated?

Are multiple calorifiers, connected in parallel in use?

If the water supplied to your building is not mains supply, has the water been pre-treated to make sure it is of the same quality as the mains

Is the entire contents of the calorifier(s), including the base(s), heated to 60*C for an hour each day, for example by using a shunt pump?

Are all outlets that are not needed cut back as far as the main pipe run?

Are there arrangements to incorporate standby equipment, for example calorifiers, pumps, into routine use?

If thermostatic mixing valves are fitted, are they included in the maintenance schedule?

If fitted, is the temperature of the water supply to the thermostatic mixing valves checked on a monthly basis?

Is there a water treatment programme in place?

Is temperature used as a control method?

If there is a risk of scalding (for example where the young, elderly or disabled may use the outlets), are thermostatic mixing valves fitted?

Is the temperature of sentinel hot and cold water outlets checked on a monthly basis?<br><br>(Note: cold water should be 20*C or below, hot water at least 50*C)

If fitted, is the temperature of the water supply to thermostatic mixing valves checked on a six-monthly basis?

Is the temperature of the water in the outlet and return pipes of the calorifier checked on a quarterly basis?

Is the temperature of the incoming water supply checked on a six-monthly basis?

Is the temperature of a representative number of hot and cold water outlet checked on an annual basis?

Is the control level required, known and recorded in the operations manual?

Is the rate of release/rate of addition of biocides known and recorded?

Is the concentration of biocides at sentinel outlets checked on a monthly basis?

Is the concentration of biocide checked at representative outlets on an annual basis?

Are the results of all tests and checks recorded, together with details of any remedial action taken (if required)?

Are there procedures in place to identify circumstances when either general microbiological monitoring or sampling for legionella would appropriate?

If there are procedures in place, do these identify where samples should be taken, and the frequency and actions required?

Have the circumstances when cleaning and disinfection of the hot water system would be appropriate been identified?

Are procedures in place for the chosen method of cleaning and disinfection?