Basic Chapter 3

Front

A pathogen causes:

Back

Outbreaks of Severe Illness

Front

Poor _______ and ineffective water _______ increase the incidence of waterborne disease.

Back

Filtration, Disinfection

Front

Waterborne disease outbreaks occur each ________ in the U.S. and many result in ________ deaths.

Back

Year, 1,000

Front

A __________ sample result is bad because it means that coliform organisms were present in the sample.

Back

Positive

Front

When coliform bacteria are present in water, the water may be _______ and is not considered suitable for human consumption.

Back

Contaminated

Front

When the testing lab notifies that coliform organisms were found in a homeowner's well supply, _______ samples should be taken.

Back

Repeat

Front

Waterborne diseases are destroyed by ________.

Back

Disinfection

Front

The most common disinfectant is ________. It is an ____________ agent.

Back

Chlorine, Oxidizing

Front

Dosage is:

Back

How much disinfectant is added to a system.

Front

Demand is:

Back

How much disinfectant is used up.