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2. Swimming pool sanitation - Wikipedia

   en.wikipedia.org/wiki/Swimming_pool_sanitation

   Indicated by a pressure gauge on the pressure side of the filter reaching into the 'red line' area, the pool owner is alerted to the need to 'backwash' the unit. The sand in the filter will typically last five to seven years before all the "rough edges" are worn off, and the more tightly packed sand no longer works as intended [ citation needed ] .

3. Pressure washing - Wikipedia

   en.wikipedia.org/wiki/Pressure_washing

   A pressure washer is used to remove old paint from a boat. Patio flagstones being pressure washed using a rotary nozzle. Pressure washing or power washing is the use of high-pressure water spray to remove loose paint, mold, grime, dust, mud, and dirt from surfaces and objects such as buildings, vehicles and concrete surfaces.

4. Pool suction-drain injury - Wikipedia

   en.wikipedia.org/wiki/Pool_suction-drain_injury

   Pool suction-drain injury, also known as suction entrapment, occurs when the drain of a wading pool, swimming pool, hot tub, or fountain sucks in a swimmer's jewelry, torso, limbs, hair or buttocks. In some cases of buttocks entrapment, victims are disemboweled .

5. Backwashing (water treatment) - Wikipedia

   en.wikipedia.org/wiki/Backwashing_(water_treatment)

   In some applications, air and water streams are simultaneously pushed upwards through the granular media followed by a rinse water wash. [3]: 213–4 Backwashing continues for a fixed time, or until the turbidity of the backwash water is below an established value. At the end of the backwash cycle, the upward flow of water is terminated and the ...

6. I don’t want our neighbors using our pool without asking ...

   www.aol.com/news/don-t-want-neighbors-using...

   Having a swimming pool at your home is nice but also can cause unwanted stress from neighbors. In her latest column, BND etiquette expert Dianne Isbell offers advice on how to deal with a couple ...

7. Automated pool cleaner - Wikipedia

   en.wikipedia.org/wiki/Automated_pool_cleaner

   Two years later, the "Automatic Swimming Pool Cleaner" was created by Andrew L. Pansini; it was the first truly automatic pool cleaner and was touted by Pansini as "effective to remove the scum, dirt and other accumulations from both the bottom and sidewalls of a pool to disperse foreign matter in the water for removal therefrom by a normal ...