An introduction to the importance of water quality and its effect on the environment

What you can do Introduction We tend to think of water in terms of a particular purpose: Water fit for one use may be unfit for another. We may, for instance, trust the quality of lake water enough to swim in it, but not enough to drink it.

An introduction to the importance of water quality and its effect on the environment

As a valuable natural resource, it comprises marine, estuarine, freshwater river and lakes and groundwater environments that stretch across coastal and inland areas.

Water has two dimensions that are closely linked: Water quality is commonly defined by its physical, chemical, biological and aesthetic appearance and smell characteristics. A healthy environment is one in which the water quality supports a rich and varied community of organisms and protects public health.

Water quality in a body of water influences the way in which communities use the water for activities such as drinking, swimming or commercial purposes. More specifically, the water may be used by the community for: Why is water quality important?

Our water resources are of major environmental, social and economic value to NSW, and if water quality becomes degraded this resource will lose its value. Water quality is important not only to protect public health: If water quality is not maintained, it is not just the environment that will suffer.

The commercial and recreational value of our water resources will also diminish. What affects the quality of our water?

Water quality is closely linked to the surrounding environment and land use. Other than in its vapour form, water is never pure and is affected by community uses such as agriculture, urban and industrial use, and recreation.

The modification of natural stream flows by dams and weirs can also affect water quality.

An introduction to the importance of water quality and its effect on the environment

The weather, too, can have a major impact on water quality, particularly in a dry country like Australia which is periodically affected by droughts.

Groundwater is a major source of water in NSW, with reserves estimated to be times more than the water in dams. Groundwater is an integral part of our water supply. At times of low river flow, groundwater enters the rivers, maintaining river flow.

Although data on groundwater quality is limited, it is clear that, like other bodies of water, groundwater close to urban or industrial development is vulnerable to contamination. Generally the water quality of rivers is best in the headwaters, where rainfall is often abundant.

2 Sources of water

Of course, there are exceptions to the rule and water quality may improve downstream, behind dams and weirs, at points where tributaries or better quality groundwater enter the main stream, and in wetlands.

Rivers frequently act as conduits for pollutants by collecting and carrying wastewater from catchments and, ultimately, discharging it into the ocean. Stormwater, which can also carry heavy loads of nutrients, organic matter and pollutants, finds its way into rivers and oceans, mostly via the stormwater drain network.

Beach water quality in NSW may also be affected by bacteria from sewer overflows or other runoff into stormwater drains. Back to top How is water quality measured? The presence of contaminants and the characteristics of water are used to indicate the quality of water.

These water quality indicators can be categorised as: Measurements of these indicators can be used to determine, and monitor changes in, water quality, and determine whether it is suitable for the health of the natural environment and the uses for which the water is required.

The design of water quality monitoring programs is a complex and specialised field. The range of indicators that can be measured is wide and other indicators may be adopted in the future.

An introduction to the importance of water quality and its effect on the environment

The cost of a monitoring program to assess them all would be prohibitive, so resources are usually directed towards assessing contaminants that are important for the local environment or for a specific use of the water. This water quality information can then be used to develop management programs and action plans to ensure that water quality is protected.

How does water quality affect aquatic ecosystems? Protecting aquatic ecosystems is in many ways as important as maintaining water quality, for the following reasons: Aquatic ecosystems are an integral part of our environment.

They need to be maintained if the environment is to continue to support people. World conservation strategies stress the importance of maintaining healthy ecosystems and genetic diversity.

Aquatic ecosystems play an important role in maintaining water quality and are a valuable indicator of water quality and the suitability of the water for other uses. Aquatic ecosystems are valuable resources.

Aquatic life is a major source of protein for humans. In most countries, including Australia, commercial and sport fishing is economically important. How does water work?Preface In and , the World Health Organization (WHO) published the first edition of Guidelines for drinking-water quality in three metin2sell.com development of these guidelines was organized.

THE IMPORTANCE OF WATER, THE HISTORY OF WATER. WATER: THE IMPORTANCE OF WATER With two thirds of the earth's surface covered by water and the human body consisting of 75 percent of it, it is evidently clear that water is one of the prime elements responsible for life on earth.

THE IMPORTANCE OF WATER, THE HISTORY OF WATER. WATER: THE IMPORTANCE OF WATER With two thirds of the earth's surface covered by water and the human body consisting of 75 percent of it, it is evidently clear that water is one of the prime elements responsible for life on earth.

FAITH | LEARNING | COMMUNITY. In the way of Jesus, St Joseph’s Catholic High School aspires to respect and celebrate the dignity of all.

Inspired by the life of St Joseph, the school promotes a culture of faith, justice and service. A. A1C A form of hemoglobin used to test blood sugars over a period of time.

Why is water quality important?

ABCs of Behavior An easy method for remembering the order of behavioral components: Antecedent, Behavior, Consequence. Environmental Awareness - Naturalist Intelligence Environment is the area in which we live. The thin layer of air that surrounds our planet that supports metin2sell.com are the only kind of life that we know of that exists in our universe.

If we did not have our environment we could not exist.

An introduction to the importance of water quality and its effect on the environment