Particles also provide attachment places for other pollutants, notably metals and bacteria. For this reason, turbidity readings can be used as an indicator of potential pollution in a water body. Excessive turbidity, or cloudiness, in drinking water is aesthetically unappealing, and may also represent a health concern.
Turbidity can provide food and shelter for pathogens. If not removed, the causes of high turbidity can promote regrowth of pathogens in the water, leading to waterborne disease outbreaks, which have caused significant cases of intestinal sickness throughout the United States and the world.
Although turbidity is not a direct indicator of health risk, numerous studies show a strong relationship between removal of turbidity and removal of protozoa. The particles of turbidity provide "shelter" for microbes by reducing their exposure to attack by disinfectants. Microbial attachment to particulate material has been considered to aid in microbe survival. Fortunately, traditional water treatment processes have the ability to effectively remove turbidity when operated properly.
Source: U. Environmental Protection Agency. State-of-the-art turbidity meters are beginning to be installed in rivers to provide an instantaneous turbidity reading. A long device is lowered into the water and at the end is a turbidity sensor.
It reads turbidity in the river by shining a light into the water and reading how much light is reflected back to the sensor. These devices can house multiple water-quality sensors, such as a conductivity sensor to measure electrical conductance of the water, which is strongly influenced by dissolved solids, and a temperature gauge.
Water test kits are available from World Water Monitoring Challenge WWMC , an international education and outreach program that builds public awareness and involvement in protecting water resources around the world. Teachers and water-science enthusiasts: Do you want to be able to perform basic water-quality tests on local waters?
WWMC offers inexpensive test kits so you can perform your own tests for temperature , pH , turbidity , and dissolved oxygen. Geological Survey, Want to know more about turbidity and water? Looking at water, you might think that it's the most simple thing around. Pure water is practically colorless, odorless, and tasteless. But it's not at all simple and plain and it is vital for all life on Earth.
Fahey, K. Hibbard, D. Dokken, B. Stewart, and T. Maycock eds. Sabine et. An indicator of current global average temperature as measured by NASA; updated annually. Global Climate Change: Causes. An overview of the greenhouse effect and other contributors to abrupt climate change. Graphic: Global Warming from to Climate Kids: What is Happening in the Ocean?
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