Certification Exam Prep

Jan
27

Distribution System

Any connection between a potable water system and another fluid system through which contamination could enter the potable water system.  

By jay@americanwatercollege.org | Certification Exams . Distribution . Water Treatment
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Jan
26

Iron and Manganese

A mineral material (glauconite) that looks like ordinary filter sand except it is green. It is treated with potassium permanganate and is used to remove iron, manganese, and hydrogen sulfide from groundwater.

By jay@americanwatercollege.org | Certification Exams . Distribution . Water Treatment
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Jan
25

Pumps & Motors

A condition which can occur when pumps are run too fast or water is forced to change directions quickly. This condition can cause pitting of the impeller and reduce pump efficiency.

By jay@americanwatercollege.org | Certification Exams . Distribution . Water Treatment
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Jan
24

Click on the “+” symbols to learn about Iron and Manganese Staining Manganese in the water supply will cause brown or black spots on laundry and plumbing fixtures.  The maximum desirable level of manganese is 0.05 mg/L to avoid staining.  The threshold at which it creates an undesirable taste in the water is 5 mg/L. Therefore, manganese will […]

By jay@americanwatercollege.org | Certification Exams . Distribution . Water Treatment
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Jan
24

System Design & Layout

Flow velocity through pipe should be limited to 5 ft/sec in order to:

By jay@americanwatercollege.org | Certificate Programs . Distribution . Water Treatment
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Jan
24
Jan
24

Fluoridation

A dry chemical feeder used to deliver a specific weight of chemical over a specific period of time.

By jay@americanwatercollege.org | Certification Exams . Distribution . Water Treatment
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Jan
20

Backflow Prevention Devices

Click on the “+” symbols to learn about backflow prevention devices.

By jay@americanwatercollege.org | Certification Exams . Distribution . Water Treatment
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