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The shamal is the north-westerly wind that pushes down the Gulf, most intensely in early summer and in shorter winter bursts, and it is the single most predictable cause of green pools in the Emirates. The dust it carries is not inert: it brings phosphates and organic matter that feed algae, and a heavy storm can seed a warm, marginally chlorinated pool so effectively that visible bloom appears within two or three days.

The response window is short. Within a day of a major dust event the pool should be skimmed, the walls and floor brushed to lift settled dust before it binds to surfaces, the skimmer and pump baskets emptied, and the filter run extended. A preventive shock dose after a bad storm is cheap insurance; a green-to-clean recovery a week later is a multi-visit job involving heavy chlorination, flocculant, vacuuming to waste and sometimes a filter media change.

Around the pump itself, the checks are for shaft seal weeping (a small drip under the pump that, ignored, becomes a burned-out motor), air in the pump basket lid indicating a suction-side leak, and valve positions after any backwash. Timer settings deserve a glance every visit because power cuts and DEWA or SEWA meter work can silently reset them, leaving a pool circulating four hours a day in July.

UAE pump rooms have one hazard of their own: heat. An enclosed block room in August can exceed 50 degrees inside, which shortens motor and capacitor life dramatically. Ventilation grilles blocked by garden storage are one of the most common and most avoidable causes of summer pump failure. If your pump room doubles as a store cupboard, stop; the space around the motor is not shelf space.

If you own a villa with a private pool, everything in this guide is your responsibility, discharged either personally or through a maintenance contract. There is no inspector coming; the consequences of neglect are simply borne by your family and your resale value. Most villa owners settle on a contract in the AED 300–900 monthly band depending on pool size and visit frequency, and treat one-off jobs — media changes, green recoveries, heater services — as extras.

Community and tower pools are a different legal animal. Shared pools in Dubai fall under Dubai Municipality's public pool requirements, with obligations around water testing logs, lifeguards for certain facilities and periodic inspection; other emirates run parallel regimes through their municipalities. The owners' association or the building's facilities management company holds the contract, funded through service charges, and residents' role is mostly to report problems rather than fix them.