What odors are most common when chlorophenols are present in the water?

Pharmaceutical and medicinal

What is a form of oxidation that is effective at removing reduced inorganic compounds like ferrous iron or manganous manganese?

Aeration

The process of passing water through air, or air through water is called what?

Aeration

The over-dosing of what chemical could cause the water consumer to find pink colored water running from their taps?

Potassium permanganate

What is the secret to successful taste and odor control?

Prevent taste and odors from ever developing

What improvement can produce a better tasting water, especially when changes in raw water turbidity, color, or pH have suddenly occurred?

Improving sedimentation and upstream processes

During nighttime hours, algae undergo respiration, consuming O and producing CO . What effect does this have on the source water pH and dissolved oxygen (DO)?

The pH and DO will gradually decrease

During daylight hours, algae use photosynthesis and consume CO and produce O . What effect does this have on the source water pH?

The pH gradually rises during the day

What are potential disadvantages of using chlorine dioxide for odor control?

Chlorine dioxide could form chlorate and chlorite ions as a byproduct

What two odors were found to be the primary objectionable odors complained about in a 1989 AWWA survey?

Chlorinous and earthy

What should every water plant have to help deal with a chemical spill into the source water supply?

An emergency response plan

Which form of chlorine or chloramine imparts a "swimming pool" or bleach like odor to water?

Dichloramine

What is degasification?

The removal of volatile compounds