Quiz: The Ultimate Sewer and Septic Systems Quiz
The Ultimate Sewer and Septic Systems Quiz
By: Staff
Image: refer to hsw

About This Quiz

Most of us probably don't devote a lot of thought to what happens after we flush the toilet. However, occasionally problems do occur and understanding how the waste disposal system works can help us decide how to deal with them. Take this quiz and see what you can do to solve sewage problems.

Apparently, this is what sewage is known as in polite society.

Definitely not. Besides its odor, it contains bacteria, solids and chemicals that can adversely affect the environment.

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What effect can nitrogen and phosphates have on water in a stream?

Since they are fertilizers, they encourage excessive growth of algae, thereby blocking light and fouling the water.

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What effect will increased bacteria have on stream water?

These bacteria consume oxygen. The resulting lack of oxygen will kill fish and other life forms.

A sewer system in rural areas, where homes are spaced far apart, would be too expensive to install and so homeowners have their own sewage facilities.

It is a large concrete or steel tank buried in the backyard.

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How many layers are formed within a septic tank?

Three layers are formed: a scum layer, water and a sludge layer.

Gases are created by bacteria breaking down the organic material in the wastewater.

It is a loop of pipe containing water to prevent gasses from flowing into the house.

It is a trench containing perforated pipes, through which water from the septic tank flows. The water is then filtered by the soil.

A typical drain field is 4 to 6 feet (about 1.5 m) deep and 2 feet (0.6 m) wide.

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How do you determine the size of a drain field?

The size is determined by how efficiently the ground absorbs water.

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Is a pump necessary for a septic system to work well?

Not at all -- it is a passive system relying on gravity.

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Is the saying "the grass is always greener over the septic tank" true?

Actually, the grass area over the drain field will be greener, because of the nutrients released into the soil.

The sewer main could be 3 to 5 feet (1 to 1.5 m) in diameter.

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In order to utilize gravity, these plants are usually located in a low-lying area.

A round cover cannot fall down the manhole.

A grinder-pump or lift station will move the wastewater over the obstacle.

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How many stages are there in a sophisticated treatment plant?

There are three stages of treatment: primary, secondary and tertiary.

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Because of the huge amounts of water discharged from a plant and the possible damage to the environment, it is essential to monitor for potential hazards.

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