Customer Service Centre: 9924513899245140

*Dated: 18-01-2023**********WAPDA Chairman Lt Gen Sajjad Ghani (retd) met with CEO/MD Water Board Engineer Syed Salahuddin. Review of progress and detailed discussion on the K4 projects during the meeting Agreed to complete the four projects during the meeting as soon as possible***Water Board along with other relevant institutions will complete the four project of Milkar as soon as possible. Chairman WAPDA Lieutenant General Sajjad Ghani (retired) expressed his views during the meeting******K4 is a very important project to alleviate water scarcity in Karachi city. Chairman WAPDA*****06-01-2023**CEO Water Board Engineer Syed Salahuddin Ahmed and COO Water Board Engineer Asadullah Khan are meeting with Special Assistant for Slum Liaquat Askani and Special Assistant to CM District West Ali Ahmed Jan MD at Secretariat Karsaz.************03-01-2023** """وزیر بلدیات سندھ سید ناصر حسین شاہ کی زیر صدارت کراچی میں فراہمی و نکاسی آب کے نظام کی بہتری کے حوالے سے اعلیٰ سطحی اجلاس ****A high-level meeting regarding the improvement of water supply and drainage system in Karachi under the chairmanship of Sindh Local Government Minister Syed Nasir Hussain Shah *******Providing better facilities including water supply and drainage to the citizens is one of our top priorities. Sindh Local Government Minister *******Sindh government will use all resources for the improvement of the city. Syed Nasir Hussain Shah ********I pay tribute to the Water Board management and employees for providing better water supply and drainage facilities to the citizens. Sindh Local Government Minister ********All matters agreed with the World Bank regarding the early completion of water supply and drainage projects should be fully implemented. Sindh Local Government Minister's directive ********Unnecessary delays in projects and postponement of projects should be avoided. Syed Nasir Hussain Shah ********Full transparency and merit should be promoted to complete the projects. Sindh Local Government Minister ********All concerned officers and consultants shall continue the consultation process until all projects are completed. Sindh Local Government Minister *******The Water Board is working well under the supervision of CEO/MD Water Board Engineer Syed Salahuddin Ahmed and COO Water Board Engineer Asadullah Khan. Sindh Local Government Minister ******Constomer Services Center Lower Block A Ninth Mile Karsaz Shahrah Faisal Lal Qila Restaurant Karachi Phone:-021-99245138-43 Fax 021-99245190 Whatup:0319-2046357 *************** Issued by 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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