Domestic Water

Domestic water, also called "tap", "drinking" or "potable" water, is for the use inside of your home, office or institution and is intended for general consumption and contact with the body.  This water has gone through a series of procedures to make sure that it is safe for human consumption and and general domestic water use.

Water agencies continually test their water for purification.  Domestic water, as the term is commonly referred to in technical or construction terms, is brought from wells and reservoirs through pipelines to the water agencies and then pumped to your community through local water mains.

New waterlines are specifically designed by civil engineers to fulfill the needs of the community, depending on the need, type and nature of businesses or building(s) being built as well as taking into consideration the existing environment. Waterlines are built to code depending on which city and/or governing agency will be responsible for future maintenance of the waterline.

For public water installation, the type of pipe typically installed consists of PVC (plastic), steel, or ductile iron pipe. Water mainlines generally consist of sizes ranging from 6" to 60" depending on the demand and governing jurisdiction.

Waterline construction generally includes the installation of 1" thru 8" water services and meters, fire hydrants, gate valves, pressure reducing stations, water blow-off assemblies, air vacuum release assemblies, and many other technical appurtenances.

Unlike sewer and storm drainage pipelines that operate with gravity flow, water lines operate as a pressurized system. Hydrostatic pressure tests are taken, which generally take 3-4 hours, and tests to ensure that there is no leakage in the pipeline. After the waterline has been satisfactorily tested to hold pressure, it is then chlorinated using chlorination tablets or chlorine gas to eliminate bacteria. After properly flushing the chlorine, samples of the water are taken to a laboratory to determine that the water meets all of the health requirements prior putting the new water main into service.

An indication in the street where a water main may exist is by a circular metal lid, indicating the location of a water valve. These valves allow access to close water mains as necessary for repair, new construction, or other purposes. These are typically painted blue and are generally only to be accessed by the respective governing agency.

Domestic water is the most important type of water supply, besides recycled and fire line water, because it is crucial to sustaining life. How water is ultimately used, consumed, and reclaimed continues to be a topic of environmental and construction-related discussion.

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Published on September 27, 2010 | Comments: 0

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