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*Dated:-29-09-2022*******In connection with the arrangements for the celebration of Eid Milad-ul-Nabi in the month of Rabi-ul-Awwal, an emergency has been imposed in the Water Board****Letter issued to Water Board authorities to take effective measures for water supply and drainage****All arrangements for water supply and drainage should be completed throughout the city before 12 Rabi Awwal. MD Water Board****Immediate measures should be taken to eliminate all complaints of water supply and drainage at mosques, madrasas, monasteries, shrines. MD Water Board Minster Local Govt. **********37.334 million assistance for the rehabilitation of the victims of stormy rains and floods across Sindh on behalf of Water Board officers and employees.***Vice Chairman Water Board Syed Najmi Alam handed over a pay order of 37.334 million to Advisor to Chief Minister Sindh Syed Waqar Mehdi to help flood victims. KARACHI***05-09-2022***** Orders issued to the Water Board officers in connection with the arrangements of Chehlum Martyrs of Karbala Effective steps should be taken for water supply and drainage across the city before the martyrs of Karbala. Strict instructions from MD Water Board Muhammad Rafiq Qureshi Urgent steps should be taken to eliminate all complaints of water supply and drainage in mosques, imambargahoons, village majlis, sabils and procession routes. MD Water Board Place ring slabs and covers on all open manholes. MD Water Board ****** *** En EASE OF DOING BUSINESS REFORMS GETTING CONSTRUCTION PERMITS (KARACHI) REGARDING DOUBLE-STOREY WAREHOUSES. for more details Click Here **** 01-11-2021...CANCELLATION OF TENDER The Tender notice No. KW&SB/DPR/2021/38, for the work of "Potable water supply through Tnders to District Keamari from Mianwali Pumping Station Hydrat through tanker service District Keamari which was publish in the Daily Newspapers The same has been cancelled due to unavoidable circumstances, the same will be re-published through press. S.E Hydrant Cell Issued by: - S.E HYDRANT CELL Public Relations Officer**

History Of Water

DO YOU KNOW THE STORY OF DRINKING WATER

The Egyptians were the first people to record methods for treating water. These records date back more than 1,500 years to 400 A.D. They indicate that the most common ways of cleaning water were by boiling it over a fire, heating it in the sun, or by dipping a heated piece of iron into it. Filtering boiling water through sand and gravel and then allowing it to cool was another common treatment method.

Water treatment is much more complex today and is discussed a bit later in this Web site.

About 70% of the earth’s surface is covered with water.

Ninety-seven percent of the water on the earth is salt water. Salt water is filled with salt and other minerals, and humans cannot drink this water. Although the salt can be removed, it is a difficult and expensive process. Two percent of the water on earth is glacier ice at the North and South Poles. This ice is fresh water and could be melted; however, it is too far away from where people live to be usable.

Less than 1% of all the water on earth is fresh water that we can actually use. We use this small amount of water for drinking, transportation, heating and cooling, industry, and many other purposes.

Everything is made of atoms. An atom is the smallest particle of an element, like oxygen or hydrogen. Atoms join together to form molecules. A water molecule has three atoms: two hydrogen (H) atoms and one oxygen (O) atom. That’s why water is sometimes referred to as H2O. A single drop of water contains billions of water molecules.

Pure water is tasteless, odorless, and colorless. Water can occur in three states: solid (ice), liquid, or gas (vapor).

Solid water—ice is frozen water. When water freezes, its molecules move farther apart, making ice less dense than water. This means that ice will be lighter than the same volume of water, and so ice will float in water. Water freezes at 0° Celsius, 32° Fahrenheit.Liquid water is wet and fluid. This is the form of water with which we are most familiar. We use liquid water in many ways, including washing and drinking.

Water as a gas—vapor is always present in the air around us. You cannot see it. When you boil water, the water changes from a liquid to a gas or water vapor. As some of the water vapor cools, we see it as a small cloud called steam. This cloud of steam is a miniversion of the clouds we see in the sky. At sea level, steam is formed at 100° Celsius, 212° Fahrenheit.The water vapor attaches to small bits of dust in the air. It forms raindrops in warm temperatures. In cold temperatures, it freezes and forms snow or hail.

The water cycle or hydrologic is a continuous cycle where water evaporates, travels into the air and becomes part of a cloud, falls down to earth as precipitation, and then evaporates again. This repeats again and again in a never-ending cycle. Water keeps moving and changing from a solid to a liquid to a gas, over and over again.

Precipitation creates runoff that travels over the ground surface and helps to fill lakes and rivers. It also percolates or moves downward through openings in the soil to replenish aquifers under the ground. Some places receive more precipitation than others do. These areas are usually close to oceans or large bodies of water that allow more water to evaporate and form clouds. Other areas receive less precipitation. Often these areas are far from water or near mountains. As clouds move up and over mountains, the water vapor condenses to form precipitation and freezes. Snow falls on the peaks.

Water treatment is the process of cleaning water. Treatment makes the water safe for people to drink. Because water is a good solvent, it picks up all sorts of natural pollutants. In nature, water is not always clean enough for people to drink. When the microscope was invented in the 1850s, germs could be seen in water for the first time. In 1902, Belgium was the first country to use chlorine to clean or treat water in a public water supply. Today, almost every city in the world treats their drinking water. Treatment includes disinfection with chlorine or other chemicals to kill any germs in the water.

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