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Water School

Archive by category: Water TreatmentReturn

What types of contaminates can be found in drinking water?

No water is completely pure. Contaminates, both naturally occurring and manmade, occur at differing levels depending on your location throughout the world. In the United States, federal and state regulations set standards for the maximum amount of contaminants allowed for water to be considered safe for drinking. Regulated contaminants include a variety of microbes and substances that at certain levels could cause adverse health effects.Though most treated drinking water is safe for consumption,...
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What is in untreated water that can make you sick?

What is in untreated water that can make you sick?

Water drawn from rivers, lakes stream and other bodies of water as well as groundwater can be contaminated and could make you sick if you drink it without treating it first. Waterborne diseases, caused by microorganisms that live in untreated water, can cause diarrhea, nausea vomiting and other symptoms, and in extreme cases, death.Many of these pathogens infect water through contact with human and animal feces, carried there by runoff or seeping into the water supply from leaking sewage or sept...
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What is mgd?

MGD or million gallons per day is a measurement of water flow frequently used in measurement of water consumption. One mgd equals 133,680.56 cubic feet per day, 1.5472 cubic feet per second or 3.0689 acre-feet per day.
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What is chlorination?

Chlorine is one of the elements known as halogens that are commonly used in bleach.  It is used in potable water treatment plants to eliminate bacteria and to minimize odor and taste.The amount of chlorine needed to purify drinking water is known as the chlorine demand.
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What is filtration?

Filtration is the process of separating solids from water during the potable treatment process using a porous material such as a permeable fabric called a membrane or by using sand.
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What is potable water treatment?

Potable water treatment is the process to purify water to make it acceptable to drink.  Most water treatment processes include some form or a combination of sedimentation, filtration, and chlorination.To view an illustration of the potable water treatment process at the East Williamson County Regional Water System, click here.
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What is raw water?

Raw water is ground or surface water that is taken directly from its source without treatment. Typically, most water is considered to be raw until it is treated by a potable water treatment process.
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What can be done to remove pharmaceuticals from drinking water?

While water treatment plants can remove some chemicals, at this time, wastewater systems are not designed to remove pharmaceuticals.  At this point, the best way to reduce the number of chemicals in our water is at their source.Pharmaceuticals enter the water cycle through a variety of sources including drugs that pass through the human body or domestic animals that are not completely absorbed and byproducts of the pharmaceutical manufacturing process.Additionally, improper disposal of old ...
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What is desalination?

Desalination is the process of removing dissolved minerals (including total dissolved solids, chlorides, and others) from water to produce potable water for human consumption or fresh water for industrial use. The two most popular methods are thermal and membrane technologies.In the thermal process, salty water is heated to make vapor, which is condensed and collected as fresh water leaving the minerals behind. Membrane processes use high pressure to filter water through permeable membranes...
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Occasionally, my water has an offensive odor and taste? Why?

The woody, musty, earthy taste that shows up from time to time in our drinking water is normally due to natural causes. The main culprit: algae. When blue-green algae end their lifecycle they emit an oily substance called geosmin, which has a distinctive earthy taste that humans can detect in even small concentrations. While this added flavor in drinking water can be annoying, it poses no health hazard.While water utilities have long worked to reduce the prevalence of the offensive taste and odo...
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What makes water hard or soft?

The mineral content determines whether your elements' water is either “hard” or “soft.”  The higher the mineral content, the harder the water. Minerals affecting water hardness can include calcium and magnesium bicarbonate or calcium sulfate, calcium chloride, magnesium sulfate and magnesium chloride.The harder the water, the more soap is needed to make foam or lather. Hard water also produces scale in hot water pipes, heaters, boilers and other places where the ...
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How many potable water treatment plants are run by the Brazos River Authority and whom do they serve?

The Brazos River Authority owns and operates the East Williamson County Regional Water System serving the cities of Taylor, Hutto and Thrall, the Jonah Special Utilities District and the Nowak Water Supply Company. The BRA also contracts to operate the Sandy Creek Water Treatment Plant in Leander and the Lee County Fresh Water Supply District No. 1, serving the community of Dime Box.
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The information provided on this site is intended as background on water within the Brazos River basin. There should be no expectation that this information is all encompassing, complete or in any way examines every aspect of this very complex natural resource.

If you have questions about a post or would like additional information, please contact us or call 888-922-6272.

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