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Practivistas rainwater 2014/Literature Review
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== Cleaning == Maintenance required for rain water catchment system is minimal, only obligations are annual inspection of gutters, roof, and screening for mosquitos and sediment, such as leaves and dirt. Cleaning of the harvesting tank is also essential. In order to prevent mosquito breeding and infestation it is crucial to ensure that any opening in the tank are entirely screened. (Hattum, 2006) During the dry season, when surfaces have the potential to become dirty, it is advised to clean and sweep all parts of harvesting system such as roof, gutters, and tank in order to avoid contamination of rain water during the first flush. (Hattum, 2006) The tank should be checked for damage and leaks, regularly. (Hattum, 2006) The table below is the suggested maintenance procedures for a rainwater harvesting systems published by the EPA.<ref>Hattum, J. W. (2006). Rainwater harvesting for domestic use. The Netherlands: Digigrafi, Wageningen.</ref> {| class="wikitable" ! Activity ! Frequency |- | Keep gutter and downspouts free of leaves and other debris | Twice a year |- | Inspect and clean pre-screening, inlet filtration devices, and first flush diverters | Four times a year |- | Inspect and clean storage tanks lids, paying special attention to vents and screens on inflow and outflow spigots, Check mosquito screens and patch holes or gaps immediately | Once a year |- | Inspect condition of overflow pipes, overflow filter path, and/or secondary runoff reduction practices | Once a year |- | Inspect tank for sediment buildup | Every third year |- | Cleaning overhanging vegetation and tress over roof surface | Every third year |- | Check integrity of backflow preventer (unless required more frequently by state or local regulations) | Every third year |- | Inspect structural integrity of tank, pump, pipe, and electrical system | Every third year |- | Replace damaged or defective system components | Every third year |}
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