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  2. District of Columbia Water and Sewer Authority - Wikipedia

    en.wikipedia.org/wiki/District_of_Columbia_Water...

    DC Water and EPA agreed upon new nitrogen limits as part of the NPDES permit effective September 2010, reducing nitrogen levels to 4.7 million pounds per year. DC Water plans to achieve these levels by constructing new facilities at Blue Plains to perform enhanced nitrogen removal (ENR). The total cost of the project is nearly $1 billion. [15]

  3. Washington Aqueduct - Wikipedia

    en.wikipedia.org/wiki/Washington_Aqueduct

    The Washington Aqueduct is an aqueduct that provides the public water supply system serving Washington, D.C., and parts of its suburbs, using water from the Potomac River. One of the first major aqueduct projects in the United States, it was commissioned by the U.S. Congress in 1852, and construction began in 1853 under the supervision of ...

  4. Water metering - Wikipedia

    en.wikipedia.org/wiki/Water_metering

    The length and diameter of a water meter's tube are standardized to ensure compatibility with plumbing systems and adherence to regulatory requirements. Water meter diameters are typically measured in nominal pipe sizes (NPS) and are commonly available in sizes ranging from 15 mm (½ inch) to 300 mm (12 inches) or larger for industrial ...

  5. List of U.S. states and territories by area - Wikipedia

    en.wikipedia.org/wiki/List_of_U.S._states_and...

    This is a complete list of all 50 U.S. states, its federal district (Washington, D.C.) and its major territories ordered by total area, land area and water area. [1] The water area includes inland waters, coastal waters, the Great Lakes and territorial waters. Glaciers and intermittent bodies of water are counted as land area. [2]

  6. Boil water advisory issued for DC and Arlington County - AOL

    www.aol.com/news/boil-water-advisory-issued-dc...

    A boil water advisory was issued Wednesday night for the entire District of Columbia and Arlington County.

  7. CNN — Precautionary boil water advisories for Washington, DC, and Arlington County were lifted Thursday morning, after local authorities announced water quality never deviated from safety standards.

  8. Lead contamination in Washington, D.C., drinking water

    en.wikipedia.org/wiki/Lead_contamination_in...

    In their 2010 water quality report, DC Water stated that there was lead found in some water samples taken during monitoring. [49] The possible causes linked to the lead contamination was said to be "corrosion of household plumbing systems; erosion of natural deposits." The report did not state where the lead was found or who it impacted.

  9. Lead service line - Wikipedia

    en.wikipedia.org/wiki/Lead_service_line

    Depending on local water utilities, the meter may be located at the property line instead. When the water meter is located at that alternative position, the pipe section that connects the water main to the water meter is the communication pipe, and the section that connects the water meter to the building isolation valve is the supply pipe.

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