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  2. Utility tunnel - Wikipedia

    en.wikipedia.org/wiki/Utility_tunnel

    A utility tunnel, utility corridor, or utilidor is a passage built underground or above ground to carry utility lines such as electricity, steam, water supply pipes, and sewer pipes. Communications utilities like fiber optics, cable television, and telephone cables are also sometimes carried.

  3. Light poverty - Wikipedia

    en.wikipedia.org/wiki/Light_poverty

    Light poverty is the state or condition in which people or communities lack artificial or electric light after sunset. This originates from many social and economic reasons, including inability to afford efficient lighting. [1] Light poverty may also occur when a country's national grid has not electrified rural areas requiring light. [2]

  4. Three utilities problem - Wikipedia

    en.wikipedia.org/wiki/Three_utilities_problem

    The classical mathematical puzzle known as the three utilities problem or sometimes water, gas and electricity asks for non-crossing connections to be drawn between three houses and three utility companies in the plane. When posing it in the early 20th century, Henry Dudeney wrote that it was already an old problem.

  5. History of water supply and sanitation - Wikipedia

    en.wikipedia.org/wiki/History_of_water_supply...

    A drinking water supply system was developed starting at least as early as 550 AD. [42] This dhunge dhara or hiti system consists of carved stone fountains through which water flows uninterrupted from underground sources. These are supported by numerous ponds and canals that form an elaborate network of water bodies, created as a water resource ...

  6. Public utility - Wikipedia

    en.wikipedia.org/wiki/Public_utility

    The term can refer to the set of services provided by various organizations that are used in everyday life by the public, such as: electricity generation, electricity retailing, electricity supplies, natural gas supplies, water supplies, sewage works, sewage systems and broadband internet services. [21]

  7. Seattle City Light to increase rates due to higher demand ...

    www.aol.com/news/seattle-city-light-increase...

    The Seattle City Light Department recently announced a plan to increase rates for customers amid a growing energy demand and heightened labor costs.

  8. 13 reasons why your electric bill is so high—plus tips to ...

    www.aol.com/finance/13-reasons-why-electric-bill...

    Arbor breaks down 13 reasons why your electricity bill may have experienced a sudden increase, plus tips on how to lower it.

  9. Sanitary engineering - Wikipedia

    en.wikipedia.org/wiki/Sanitary_engineering

    An example of a wastewater treatment system. Sanitary engineering, also known as public health engineering or wastewater engineering, is the application of engineering methods to improve sanitation of human communities, primarily by providing the removal and disposal of human waste, and in addition to the supply of safe potable water.