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  2. Water supply and sanitation in the Philippines - Wikipedia

    en.wikipedia.org/wiki/Water_supply_and...

    The vast majority used flush toilets connected to septic tanks. Since sludge treatment and disposal facilities were rare, most effluents were discharged without treatment. [26] Within the entire country, septic tanks are the most common method of sewage treatment. In Metro Manila alone, about 75 local companies provide tank-desludging services ...

  3. Maynilad Water Services - Wikipedia

    en.wikipedia.org/wiki/Maynilad_Water_Services

    It supplies about 90 percent of raw water requirements for Metro Manila through the facilities of the Metropolitan Waterworks and Sewerage System. Maynilad is sourcing its more than 90 percent raw water supply requirement from Angat Dam. Laguna de Bay is another source of water for Maynilad, mainly serving Muntinlupa and Cavite.

  4. 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]

  5. Water privatization in Metro Manila - Wikipedia

    en.wikipedia.org/wiki/Water_privatization_in...

    Water privatization in Metro Manila began when the then President of the Philippines, Fidel Ramos, instructed the government in 1994 to solve what he called the water crisis in Manila by engaging with the private sector. In 1997, two concession contracts for the Eastern and Western halves of Metro Manila were awarded after an open competition ...

  6. Manila Water - Wikipedia

    en.wikipedia.org/wiki/Manila_Water

    It is a rockfill dam with a spillway equipped with three gates at a spilling level of 217 meters (712 ft). Angat Dam supplies 96% of Metro Manila's water needs with a storage capacity of about 850 million cubic meters (30 × 10 ^ 9 cu ft). Five auxiliary turbines release water from Angat Dam, where it is diverted to the two tunnels going to Ipo ...

  7. Effluent sewer - Wikipedia

    en.wikipedia.org/wiki/Effluent_sewer

    Effluent sewer systems, also called septic tank effluent gravity (STEG), solids-free sewer (SFS), or septic tank effluent drainage (STED) systems, have septic tanks that collect sewage from residences and businesses, and the liquid fraction of sewage that comes out of the tank is conveyed to a downstream receiving body such as either a ...

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  9. Wastewater treatment - Wikipedia

    en.wikipedia.org/wiki/Wastewater_treatment

    Gravity separation of solids is the primary treatment of sewage, where the unit process is called "primary settling tanks" or "primary sedimentation tanks". [17] It is also widely used for the treatment of other types of wastewater. Solids that are denser than water will accumulate at the bottom of quiescent settling basins.