PMT 108: PRINCIPLES OF WATER EXAM
QUESTIONS AND ANSWERS 100%
SOLVED.
, Air Gap - ANSWERA physical separation sufficient to prevent backflow between the
free-flowing discharge end of a potable water system outlet and any other system.
Size of Air Gap - ANSWEREqual to twice the diameter of the outlet. Never less than 1
inch
Backflow - ANSWERThe flow of non-potable water or other liquids, mixtures, or
substances into the potable water supply.
Backflow Prevention Device - ANSWERA device or means designed to prevent
backflow or backsiphonage. (One Way Valve)
Check Valve - ANSWERself closing device which is designed to allow the flow of fluids
in one direction and to close if there is a reversal of flow
Chloramine - ANSWERchlorine + ammonia (Ammonia from reaction byproduct)
Disinfectant Examples - ANSWERChlorine, Chlorine dioxide, Chloramines, and Ozone
Free Available Chlorine (FAC) - ANSWERChlorine available after chlorine demand has
been satisfied.
Marginal Chlorination - ANSWERapplication of chlorine to produce the desired total
chlorine residual without reference to the amounts of free or combined chlorine present
Raw Water - ANSWERUntreated Water
Total Available Chlorine - ANSWERFree available chlorine (FAC) + Combined Available
Chlorine (CAC)
What does the EPA do? - ANSWERSets and enforces national pollution control
standards
The EPA created and enforces the - ANSWERSafe Drinking Water Act (SDWA)
The SDWA ensures - ANSWEREnsures the quality of Americans" drinking water
The SDWA was created in - ANSWER1974
The National PRIMARY Drinking Water Regulation (NPDWR) is concerned with -
ANSWERThe health of public water systems
QUESTIONS AND ANSWERS 100%
SOLVED.
, Air Gap - ANSWERA physical separation sufficient to prevent backflow between the
free-flowing discharge end of a potable water system outlet and any other system.
Size of Air Gap - ANSWEREqual to twice the diameter of the outlet. Never less than 1
inch
Backflow - ANSWERThe flow of non-potable water or other liquids, mixtures, or
substances into the potable water supply.
Backflow Prevention Device - ANSWERA device or means designed to prevent
backflow or backsiphonage. (One Way Valve)
Check Valve - ANSWERself closing device which is designed to allow the flow of fluids
in one direction and to close if there is a reversal of flow
Chloramine - ANSWERchlorine + ammonia (Ammonia from reaction byproduct)
Disinfectant Examples - ANSWERChlorine, Chlorine dioxide, Chloramines, and Ozone
Free Available Chlorine (FAC) - ANSWERChlorine available after chlorine demand has
been satisfied.
Marginal Chlorination - ANSWERapplication of chlorine to produce the desired total
chlorine residual without reference to the amounts of free or combined chlorine present
Raw Water - ANSWERUntreated Water
Total Available Chlorine - ANSWERFree available chlorine (FAC) + Combined Available
Chlorine (CAC)
What does the EPA do? - ANSWERSets and enforces national pollution control
standards
The EPA created and enforces the - ANSWERSafe Drinking Water Act (SDWA)
The SDWA ensures - ANSWEREnsures the quality of Americans" drinking water
The SDWA was created in - ANSWER1974
The National PRIMARY Drinking Water Regulation (NPDWR) is concerned with -
ANSWERThe health of public water systems
