What do you mean by water scarcity?

Following are the measures for preventing water Scarcity

(1) Productivity of agricultural water can be improved by using better cultivars and nutrient applicants. This can help reduce the fraction of people living in areas facing water stress by 2 per cent by 2050. Water stress is defined as a scenario “where more than 40 per cent of the available water from rivers is unavailable because it is already being used”.

(2) Irrigation efficiency can be improved by switching from flood irrigation to sprinklers or drips. However, this measure can result in soil salinisation, warns the study. 

(3) Domestic and industrial water use can be reduced by cutting leakage in distribution and by improving water recycling facilities

(4) Keeping world population below 8.5 billion by 2050 though tax incentives and family planning can reduce the demand for water. But current trends indicate that this measure could be difficult to implement, says that study. 

Hard measures
(5) Increasing storage in reservoirs by enlarging the capacity of existing reservoirs, by making new reservoirs and by reducing sedimentation. This strategy would require an additional 600 cubic km of additional capacity and could have “negative ecological and social impacts”  

(6) Increasing the capacity or numbers of desalination plants can help in countering the problem in coastal areas. A 50-fold increase is needed to have an impact. This would require significant investments and will have energy costs. Also, waste water discharged will need to be disposed of safely.

 

Depletion in water level is said to be water scarcity . ..

In Simple Words..

Jitni Per Day Ki Need Hai Water Ki Utna Water Bhi Na Milna

Water scarcity, insufficient freshwater resources to meet the human and environmental demands of a given area. Water scarcity is inextricably linked to human rights, and sufficient access to safe drinking water is a priority for global development. However, given the challenges of population growth, profligate use, growing pollution, and changes in weather patterns due to global warming, many countries and major cities worldwide, both wealthy and poor, faced increasing water scarcity in the 21st century.
There are two general types of water scarcity: physical and economic. Physical, or absolute, water scarcity is the result of a region’s demand outpacing the limited water resources found there. According to the Food and Agricultural Organization (FAO) of the United Nations, around 1.2 billion people live in areas of physical scarcity; many of these people live in arid or semi-arid regions. Physical water scarcity can be seasonal; an estimated two-thirds of the world’s population lives in areas subject to seasonal water scarcity at least one month of the year. The number of people affected by physical water scarcity is expected to grow as populations increase and as weather patterns become more unpredictable and extreme.
Economic water scarcity is due to a lack of water infrastructure in general or to the poor management of water resources where infrastructure is in place. The FAO estimates that more than 1.6 billion people face economic water shortage. In areas with economic water scarcity, there usually is sufficient water to meet human and environmental needs, but access is limited. Mismanagement or underdevelopment may mean that accessible water is polluted or unsanitary for human consumption. Economic water scarcity can also result from unregulated water use for agriculture or industry, often at the expense of the general population. Finally, major inefficiencies in water use, usually due to the economic undervaluing of water as a finite natural resource, can contribute to water scarcity.

Water scarcity is increasing and availability of water for agriculture is decreasing. ... There are two key types of water scarcity: physical and economic. Physical scarcity occurs when the demand of the population exceeds the available water resources of a region.

Lack of sufficient water is water scarcity

Hey,water scarcity is the lack of sufficient available water resources to meet the demands of water usage within a region 

Water scarcity is the lack of sufficient available water resources to meet the demands of water usage within a region.

It already affects every continent and around 2.8 billion people around the world at least one month out of every year.
More than 1.2 billion people lack access to clean drinking water.
Water scarcity involves water stress, water shortage or deficits, and water crisis.
While the concept of water stress is relatively new, it is the difficulty of obtaining sources of fresh water for use during a period of time and may result in further depletion and deterioration of available water resources.Water shortages may be caused by climate change, such as altered weather patterns including droughts or floods, increased pollution, and increased human demand and overuse of water.
A water crisis is a situation where the available potable, unpolluted water within a region is less than that region's demand.
Water scarcity is being driven by two converging phenomena: growing freshwater use and depletion of usable freshwater resources.
Water scarcity can be a result of two mechanisms: physical (absolute) water scarcity and economic water scarcity, where physical water scarcity is a result of inadequate natural water resources to supply a region's demand, and economic water scarcity is a result of poor management of the sufficient available water resources.
According to the United Nations Development Programme, the latter is found more often to be the cause of countries or regions experiencing water scarcity, as most countries or regions have enough water to meet household, industrial, agricultural, and environmental needs, but lack the means to provide it in an accessible manner.
The reduction of water scarcity is a goal of many countries and governments.
The UN recognizes the importance of reducing the number of people without sustainable access to clean water and sanitation.
The Millennium Development Goals within the United Nations Millennium Declaration state that by 2015 they resolve to "halve the proportion of people who are unable to reach or to afford safe drinking water."

Water scarcity can be defined as a lack of sufficient water, or not having access to safe water supplies. Water is a pressing need in many areas of the world. That scarcity is spreading as water is needed to grow and process food, create energy, and serve industry for a continually growing population.

When water is not provided sufficient to people tofulfill their basic needs this situation leads to "water scarcity. "

Water scarcity is the lack of fresh water resources to meet water demand . It affects every continent and was listed in 2015 by the WORLD ECONOMIC FORUM as the largest global risk  in terms of potential impact over the next decade. It is manifested by partial or no satisfaction of expressed demand, economic competition for water quantity or quality, disputes between users, irreversible depletion of groundwater, and negative impacts on the environment. One-third of the global population (2 billion people) live under conditions of severe water scarcity at least 1 month of the year. Half a billion people in the world face severe water scarcity all year round.Half of the world’s largest cities experience water scarcity.

WATER SCARCITY-when the available water is not sufficient to meet the water requirements of people of a particular region or country it is said to be water scarcity.THE MAIN REASONS BEHIND WATER SCARCITY ARE-1.increase in population.2. uneven distribution of water resources among people.3. climatic conditions also results for water scarcity in some regions.4. now a days water bodies are polluted also result is lack of water supply to all people.5. water is required for many imp activities such as agriculture which is very important and since these activities required a large amount of water there is insufficient water to meet the water requirement of all people

Water Scarcicity means lack of fresh water as per demand

Unavailability of water

Water scarcity meaning the lack of water in our biosphere it includes the fresh water which comes to our use.

Water scarcity is the lack of sufficient available water resources to meet the demands of water usage within a region. The increase in water demand is a contribution of various factors including growing population, increased agricultural needs, industrial use and for electricity production.

Water scarcity is the situation under which availablity of water is less than demand.

"WATER SCARCITY" is the lack of fresh water resources to meet water demand...