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  2. Swimming pool sanitation - Wikipedia

    en.wikipedia.org/wiki/Swimming_pool_sanitation

    Over time, calcium from municipal water tends to accumulate, developing salt deposits in the swimming pool walls and equipment (filters, pumps), reducing their effectiveness. Therefore, it is advised to either completely drain the pool, and refill it with fresh water, or recycle the existing pool water, using reverse osmosis. The advantage of ...

  3. Sump pump - Wikipedia

    en.wikipedia.org/wiki/Sump_pump

    A sump pump is a pump used to remove water that has accumulated in a water-collecting sump basin, commonly found in the basements of homes and other buildings, and in other locations where water must be removed, such as construction sites. The water may enter via the perimeter drains of a basement waterproofing system funneling into the basin ...

  4. Virginia Graeme Baker Pool and Spa Safety Act - Wikipedia

    en.wikipedia.org/wiki/Virginia_Graeme_Baker_Pool...

    The Virginia Graeme Baker Pool and Spa Safety Act (VGBA) is a United States law named after Virginia Graeme Baker, who died after sustaining a pool suction-drain injury in June 2002, when the suction from a spa drain entrapped her under the water. It is incorporated as Title 14 of the U.S. Energy Independence and Security Act of 2007 (EISA ...

  5. Swimming pool - Wikipedia

    en.wikipedia.org/wiki/Swimming_pool

    An Olympic-size swimming pool (first used at the 1924 Olympics) is a pool that meets FINA's additional standards for the Olympic Games and for world championship events. It must be 50 by 25 m (164 by 82 ft) wide, divided into eight lanes of 2.5 m (8.2 ft) each, plus two areas of 2.5 m (8.2 ft) at each side of the pool.

  6. Sump - Wikipedia

    en.wikipedia.org/wiki/Sump

    Sump. A sump is a low space that collects often undesirable liquids such as water or chemicals. A sump can also be an infiltration basin used to manage surface runoff water and recharge underground aquifers. [1] Sump can also refer to an area in a cave where an underground flow of water exits the cave into the earth.

  7. Submersible pump - Wikipedia

    en.wikipedia.org/wiki/Submersible_pump

    A submersible pump (or electric submersible pump (ESP) is a device which has a hermetically sealed motor close-coupled to the pump body. The whole assembly is submerged in the fluid to be pumped. The main advantage of this type of pump is that it prevents pump cavitation, a problem associated with a high elevation difference between the pump ...

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