S.L. 465.3 Art. 19Offences. Cooling to evaporative condensers Warm water Cold water or as cessary, first by monthly or frequently recommended manufacturer daily Fountains features indoors) ACTION HETERO- TROPHIC COLONY COUNT1 CFU/ ML AT 30ºC (Minimum 48 hours incubation) <10,000 >10,000 and up to 100,000 >100,000 1 C

Any person who contravenes any of the provisions of these regulations shall be guilty of an offence under the Act. SCHEDULE 1

RECOMMENDED INSPECTION FREQUENCIES FOR RISK SYSTEMS CHECKLIST 1: COOLING WATER INSTALLATIONS

SYSTEM/SERVICES TASK FREQUENCY wers and Monitor water quality, water use and 6 monthly biocide/chemical use to assess and ensure effectiveness of water treatment regime, including key chemical and microbiological parameters and observations of internal condition of pond, pack and water Central control function, conductivity Month ly to 3 sensor calibration, blow down function, m onthly, uniformity of water distribution, according to risk condition of sprays/troughs, eliminators, pack, pond, immersion heater, fan and sound attenuators Clean and disinfect cooling towers/ 6 monthly evaporative condensers, make up tanks and associated systems, including all wetted surfaces, descaling as necessary. Packs should be removed and cleaned where practicable.

CHECKLIST 2: HOT AND COLD WATER SERVICES

SERVICES TASK FREQUENCY services Arrange for samples to be taken from hot 6 monthly water heaters, in order to note condition of drain water Check temperatures in flow and return at Daily calorifiers Check temperature up to 1 minute to see Weekly if it has reached 50ºC in the sentinel taps Visual check on internal surfaces of Annually water heaters for scale and sludge Check representat ive taps for Monthly temperature as above on a rotational basis services Check tank water temperature remote 6 monthly from ball valve and mains temperature at ball valve. Note maximum temperatures recorded by fixed max/min thermometers where fitted SERVICES TASK FREQUENCY Note: This temperature Check that temperature is below 20ºC Weekly may not be reached after running the water for up to 2 during the summer minutes in sentinel taps months in Malta Visually inspect cold water storage tanks 6 monthly and carry out remedial work where necessary Check representativ e taps for Monthly temperature as above on a rotational basis Shower heads Dismantle, clean and descale shower Quarterly, heads and hoses ne whichever comes Little used outlets Flush through and purge to drain Weekly

CHECKLIST 3: OTHER RISK SYSTEMS SYSTEM/SERVICES TASK FREQUENCY Spray humidifiers, air Clean and disinfect spray humidifiers/air 6 monthly wash er s and wet washers and make up tanks including all scrubbers wetted surfaces, descaling as necessary Confirm the operation of non chemical Weekly water treatment (if present) Water softeners Clean and disinfect resin and brine tank - As check with manufacturer what chemicals recommended can be used to disinfect resin bed manufacturer Emergency showers Flush through and purge to drain 6 and eye wash sprays more if by Sprinkler and hose reel When witnessing tests of sprinkler blow Quarterly systems down and hose reels ensure that there is minimal risk of exposure to aerosols Lathe and machine tool Clean and di sin fect storag e and 6 monthly coolant systems distribution system Spa baths Check filters - sand filters should be Daily backwashed daily Check water treatment - pools should be 3 times continuously treated with oxidising biocide Clean and disinfect entire system Weekly Horticultural misting Clean and disinfect distribution pipe Annually systems work, spray heads and make-up tanks, including all wetted surfaces, descaling as necessary SYSTEM/SERVICES TASK FREQUENCY and water Clean and disinfect ponds, spray heads Weekly (particularly and make-up tanks, including all wetted surfaces, descaling as necessary

SCHEDULE 2 LEVELS FOLLOWING MICROBIOLOGICAL MONITORING FORCOOLING TOWER SYSTEMS AND EVAPORATIVE CONDENSERS

LEGIONELLA ACTION REQUIRED ON NOTIFICATION TO BACTERIACF SYSTEM SUPERINTENDENT U/LITRE2

<1000 System under control None >1000 and Review programme operation - Following resampling and similar up to 10,000 The count should be confirmed by counts are confirmed, the immediate re-sampling. If similar Superintendent is to be informed in count is found again, a review of writing within 24 hours of receiving the control measures and risk the laboratory report and should assessment should be carried out include copies of laboratory results to identify any remedial actions. together with the control measures being taken by the responsible person to remedy the situation. >10,000 Implement corrective action - Once microbiological results The system should immediately indicate these levels of bacterial be re-sampled. It should then be counts, the responsible person ‘shot dosed’ with an appropriate within 24 hours of receiving the biocide, as a precaution. The risk laboratory report shall inform the assessment and control measures Superintendent by phone and in should be reviewed to identify writing within 48 hours which remedial actions. report should include copies of the laboratory results together with the control measures being taken to remedy the situation. count determined by pour plate method according to ISO 6222(20) or by spread plate extract agar 2 Determined in accordance with ISO 11731(19) SCHEDULE 3

TEMPERATURE CONTROL FOR HOT AND COLD WATER SYSTEMS

STANDARD TO MEET FREQUENCY CHECK COLD WATER HOT WATER Weekly Sentinel taps The water The water This check temperature temperature should the sup should be below be at least 50ºC temperatures 20ºC or less after within a minute of are unchanged running the water running the water is functioning for up to two minutes Monthly If fitted, input to The water supply to One way thermostatic the TMV is to use mixer valves temperature should temperature

(TMV) on a be at least 50ºC sentinel basis within a minute of running water Water leaving and Outgoing water If fitted, returning to the should be at least pocket at water heater 60ºC, return at least water storage 50ºC the retur points temperature If measurements carried out building system Six monthly Incoming cold The water should The most water inlet (at preferably be to measure least once in the below 20ºC at all ball valve winter and once in times water storage summer) Six monthly Representative The water The water This check number of taps on temperature temperature should the wh a rotational basis should be 20ºC or be at least 50ºC working properly less after running within a minute of the water for two running the water. minutes The difference between the highest and lowest temperature recorded at the taps after one minute should not be greater that 10ºC SCHEDULE 4

LEVELS FOLLOWING MICROBIOLOGICAL MONITORING FOR HOT AND COLD WATER SYSTEMS

NOTIFICATION TO ACTION REQUIRED ON SYSTEM 1 SUPERINTENDENT

System under control None Either: Following resampling and similar counts are confirmed, the

(i) If only one or two samples Superintendent is to be informed in are positive, systems should writing within 24 hours of receiving be re sampled. If a similar the laboratory report, and should count is found, then review of include copies of laboratory results the control measures and risk together with the control measures assessment should be carried being taken by the responsible out to identify any remedial person to remedy the situation actions;

(ii) If the majority of samples are positive, the system may be colonised, albeit at a low level, with Legionella. Disinfection of the system should be considered but an immediate review of control measures and risk assessment should be carried out to identify any other remedial action required. The system should be re-sampled Once microbiological results and an immediate review of the indicate these levels of bacterial control measures and risk counts, the responsible person within assessment carried out to identify 24 hours of receiving the laboratory and remedial actions, including report shall inform the possible disinfection of the system Superintendent by phone and in writing within 48 hours which report should include copies of the laboratory results together with the control measures being taken to remedy the situation in accordance with ISO 11731(19) SCHEDULE 5

CONFIRMATION DECLARATION OF FEES DUE TO THE SUPERINTENDENT OF PUBLIC HEALTH

The Superintendent of Public Health Health Division

I, the undersigned, in my capacity of ................................................. .............................................. (premises name) hereby declare that I will one month’s time of receipt of invoice, all the expenses that the Health incur in the sampling, transportation, preparation and analysis of ........... samples, which have been taken from ................................................(premises name and address) on the .................... (date of sampling) as part of the of a case or suspected case of Legionnaire’s disease.

(Sgd) Name and Surname o.b.o. I.D. No. Date of Birth

Place of Birth Parent’s Name and Surname Residential Address

Billing Address VAT No.

Date SCHEDULE 6

HEALTH AUTHORITY ENFORCEMENT NOTICE

per regulation 18(2) of the Control of Legionella Regulations)

...........................................

................................................ ................................................ ................................................

Following investigations carried out by the Superintendent of Public Health, that the risk of infection from Legionnaire’s Diseases is significant at ................................................................................................................................. .................................................................................................................................

risk of infection from Legionnaire’s Diseases relates to: ........................ ................................................................................................................................. .................................................................................................................................

Without prejudice to the Superintendent’s right to take action in accordance provisions of the Control of Legionella Regulations, you are hereby IMMEDIATELY close down the ............................................................ notice.

Superintendent of Public Health