Exam 35: Wastewater Treatment, Water Purification, and Waterborne Microbial Diseases

The organism causing giardiasis is a

Which treatment method(s) are used in primary wastewater treatment?

Before about 1905, water purification was limited to ________.

Disinfection of water with a standard application of ultraviolet radiation kills most microorganisms but does not always kill viruses.

Drinking water standards in the United States are specified under the _________ Act.

The single most important measure available for ensuring public health is________.

A major factor in the reduction in the number of cases of typhoid fever was the introduction of________ and _________ into water purification systems.

Both physical and chemical methods are used to treat and purify water.

Most wastewater treatment facilities employ methods designed to detect each pathogenic organism that may be present in a given sample.

In the United States, individuals become infected with Vibrio cholerae most commonly by

To reduce further the possibility of biological contamination, most treatment plants treat the effluent with

Protists that produce spore are especially difficult to kill, because they contain cell membranes that are resistant to common disinfecting chemicals.

Most coliforms are members of which bacterial group?

Legionellosis is normally transmitted in________ .

Water is considered to be the third most important common source of infectious diseases.

While the wastewater is in the activated sludge tank, much of the organic matter is

When discussing treated water, the term used to describe the storage tanks and supply lines is________ .

Microbial contamination of materials shared by a large number of individuals can lead to________diseases.

Which product of anoxic sewage treatment can be used to heat and power an entire water treatment facility?

Two common methods used in the diagnosis of giardiasis are demonstration of Giardia________and demonstration of Giardia ________.