Legionella Risk Assessment

Property address:

General description
Incoming mains water supply
1 / Location of incoming main
2 / Construction material
3 / Water meter fitted?
4 / Direct Supply from water undertaker?
5 / Mains supply lagged
6 / Lagging satisfactory/unsatisfactory?
7 / Any deadlegs identified?
8 / Mains water temperature <200C
9 / Mains water temperature <250C
10 / Mains water temperature monitored
Residual risk and Actions needed
Cold water storage tanks
1 / Ambient temperature, supply water temperature and stored water temperature monitored and recorded 6-monthly?
2 / Tank inspected internally on an annual basis for signs of corrosion, scale and other contamination?
Residual risk and Actions needed
Hot water system
1 / Method of domestic hot water generation?
2 / Stored water temperature?
3 / Maximum outlet temperature?
4 / Minimum outlet temperature?
5 / Drainvalve fitted?
6 / Calorifier/water heater blowdown?
7 / Frequency of blowdowns?
8 / Can calorifier/water heater be inspected internally for build-up of sludge, scale, etc.?
9 / Calorifier circulation pumps alternated weekly?
10 / Temperature gauges fitted to calorifier flow and return lines?
11 / Date of last internal inspection?
12 / Spray taps fitted?
13 / Showers fitted?
14 / Rarely used outlets?
15 / Deadlegs identified?
16 / Calorifier/water heater monitored?
17 / Outlet temperatures monitored
18 / Regime in place for disinfection/descale of showers/spray taps
19 / Thermostatic mixer valves utilised?
20 / Maximum distance of mixer valves from outlet?
21 / Immunosuppressed or other persons on site who may be particularly susceptible to the legionella bacterium?
22 / System sampled for the presence of legionella?
Residual risk and Actions needed
Records & Documentation / Frequency?
1 / Are mains water temperatures monitored and recorded?
2 / Are storage tanks inspected internally & findings recorded?
3 / Are stored water temperatures monitored and recorded?
4 / Are calorifiers/water heaters monitored regularly and findings recorded?
5 / Are domestic hot water outlet temperatures monitored and recorded?
6 / Are tank-fed cold water outlet temperatures monitored and recorded?
7 / Are calorifier/water heater blowdowns conducted and recorded?
8 / Are showers/spray taps cleaned, disinfected and descaled regularly?
9 / Are cleaning and disinfection certificates present (hot & cold water services)?
10 / Is there a copy of the plan of the systems on site?
11 / Are there adequate responsibility structures and communication channels including contact names and numbers in place?
12 / Are there training records for site staff? Is there a ‘safe working system’ in place for cleans and disinfections or thermal pasteurisations?
Residual risk and Actions needed
Health and Safety
1 / Is the plant room kept locked?
2 / Adequate lighting?
3 / Is there an adequate emergency action plan for a positive legionella result or a suspected outbreak?
Residual risk and Actions needed
Summary Risk Assessment and Actions needed