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  2. AOL Mail

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  3. Plumbing - Wikipedia

    en.wikipedia.org/wiki/Plumbing

    sewage systems and septic systems with or without hot water heat recycling and graywater recovery and treatment systems; Rainwater, surface, and subsurface water drainage; fuel gas piping; hydronics, i.e. heating and cooling systems using water to transport thermal energy, as in district heating systems, like for example the New York City steam ...

  4. Water point mapping - Wikipedia

    en.wikipedia.org/wiki/Water_Point_Mapping

    One drawback of water point maps is that they are only as accurate as the underlying data collected, [3] so that there is a need to define reliable but simple indicators as the basis of the monitoring framework. Clearly, the core sector indicator is water supply coverage, and in rural areas, access to water is normally defined by establishing a ...

  5. Septic tank - Wikipedia

    en.wikipedia.org/wiki/Septic_tank

    A septic tank is an underground chamber made of concrete, fiberglass, or plastic through which domestic wastewater flows for basic sewage treatment. [2] Settling and anaerobic digestion processes reduce solids and organics, but the treatment efficiency is only moderate (referred to as "primary treatment"). [2]

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  7. Sewage treatment - Wikipedia

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    Sewage treatment (or domestic wastewater treatment, municipal wastewater treatment) is a type of wastewater treatment which aims to remove contaminants from sewage to produce an effluent that is suitable to discharge to the surrounding environment or an intended reuse application, thereby preventing water pollution from raw sewage discharges. [2]