When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. How long do you need to boil water? Boil water notices issued ...

    www.aol.com/long-boil-water-boil-water-151323413...

    If you do not have bottled water available, the next best option is to boil your tap water to make it safe to drink. If boiling your tap water is not possible, you can disinfect it to make it safe ...

  3. Portable water purification - Wikipedia

    en.wikipedia.org/wiki/Portable_water_purification

    Boiling does not remove most pollutants and does not leave any residual protection. The WHO states bringing water to rolling boil then naturally cooling is sufficient to inactivate pathogenic bacteria, viruses and protozoa. [8] The CDC recommends a rolling boil for 1 minute. At high elevations, though, the boiling point of water drops.

  4. Purified water - Wikipedia

    en.wikipedia.org/wiki/Purified_water

    Double-distilled water (abbreviated "ddH 2 O", "Bidest. water" or "DDW") is prepared by slow boiling the uncontaminated condensed water vapor from a prior slow boiling. Historically, it was the de facto standard for highly purified laboratory water for biochemistry and used in laboratory trace analysis until combination purification methods of ...

  5. Water purification - Wikipedia

    en.wikipedia.org/wiki/Water_purification

    Fresh water can have widely ranging pH values depending on the geology of the drainage basin or aquifer and the influence of contaminant inputs . If the water is acidic (lower than 7), lime, soda ash, or sodium hydroxide can be added to raise the pH during water purification processes. Lime addition increases the calcium ion concentration, thus ...

  6. 'Continue to boil water': Richmond residents urged to ... - AOL

    www.aol.com/news/continue-boil-water-richmond...

    A "Water Boil Advisory" issued Monday afternoon will remain in effect until "all required testing is complete and approved in accordance with drinking water quality standards. At that point, the ...

  7. Long Beach asks residents to boil water before drinking due ...

    www.aol.com/news/long-beach-asks-residents-boil...

    Long Beach utility officials are asking residents in three ZIP Codes to boil their water before drinking following a water main break in North Long Beach late Wednesday night.

  8. Distilled water - Wikipedia

    en.wikipedia.org/wiki/Distilled_water

    Water escaping as steam, for example from a boiler of heating system or steam engine, leaves behind any dissolved materials leading to mineral deposits known as boiler scale. A boiling water distiller. Boiling tank on top and holding tank on the bottom. Low-volume humidifiers such as cigar humidors can use distilled water to avoid mineral ...

  9. List of purification methods in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_purification...

    Water purification combines a number of methods to produce potable or drinking water. Downstream processing refers to purification of chemicals, pharmaceuticals and food ingredients produced by fermentation or synthesized by plant and animal tissues, for example antibiotics, citric acid, vitamin E, and insulin.