Water Quality Awareness 101 23 | P a g e 14. EQUIPMENT AND PERSONNEL People, materials and equipment working around water treatment plants, filter beds, water storages and pump wells. When in doubt, stop and question the actions being considered before creating an incident that could have been avoided. 14.1.1 Issues  Pumps, pipework and fittings that have been removed and sent away for repairs should not be assumed to be fit for immediate use when returned (i.e. disinfected)  Lifting pipework, pumps and fittings (which have been properly cleaned) into a drinking water storage with equipment such as chains and slings that may have been previously contaminated and not disinfected  Installing Cathodic Protection anodes, sensors or instrumentation into tanks. These items can be contaminated from transport to site or from being laid out on unclean areas before installation  Vacuum and tanker trucks cleaning out filter beds, storages and pump wells can have hoses that were previously used in unclean environments. There is also the risk of a back-flow event occurring to the area being worked upon  Personnel or divers entering into storages, filter beds or pump wells to carry out cleaning, maintenance work or inspections. The risk of cross contamination from previous jobs cannot be underestimated - this includes the vehicles, all equipment, PPE and the personnel themselves 14.1.2 Solutions  Clean and disinfect all items (however small) before they are used in the maintenance of drinking water facilities and storages  Cranes that are used to lift in larger items should only use new and/or disinfected lifting equipment when working on pump wells, WTP facilities and storage tanks  Cathodic Protection anodes, sensors or instrumentation should all be disinfected onsite before installation  Vacuum or tanker trucks working on drinking water sites need to be carefully managed. Only new and/or disinfected hoses should be used and backflow prevention devices should be installed and tested  Divers working inside storage tanks and treatment facilities should be drinking water dedicated (DWD) - this includes their personnel, equipment and support vehicles