Distribution

Front 1

7.48 gallons =

Back 1

1 cubic ft

Front 2

1 cubic ft =

Back 2

7.48 gallons

Front 3

MGD

Back 3

Million gallons per day

Front 4

GPD

Back 4

Gallons per day

Front 5

GPM

Back 5

Gallons per minute

Front 6

CFS

Back 6

Cubic feet per second

Front 7

PSI will always be the ____ # compared to the ft of head

Back 7

Smaller

Front 8

Ft of head will always be the ____ # compared to the psi

Back 8

Bigger

Front 9

2.31 ft of head =

Back 9

1 psi

Front 10

1 psi =

Back 10

2.31 ft of head

Front 11

Maximum psi in system

Back 11

80 psi

Front 12

Normal psi in system =

Back 12

35-65 psi

Front 13

Minimum psi in system

Back 13

20 or below

Front 14

PSI

Back 14

Pounds per square inch

Front 15

Maximum total chlorine level =

Back 15

4.0 mg/L

Front 16

Minimum total chlorine level =

Back 16

1.5 mg/L

Front 17

Minimum free chlorine level =

Back 17

.30 mg/L

Front 18

Bacteria samples should be filled to _____

Back 18

100 ml or 1”from the top

Front 19

Bacteria samples should be shipped within ______

Back 19

30 hours

Front 20

If you are given the purity you should ____ by it

Back 20

Divide

Front 21

VFD or VSD are both do this

Back 21

Electronically control flow

Front 22

Water mains must be able to handle working pressures of ____ psi or higher and _____.

Back 22

100 and Surge Pressure (water hammer)

Front 23

Gate Valves

Back 23

Designed to start and stop flow

Front 24

Butterfly valves

Back 24

Open quickly, used for on-off operation, may be used to throttle flow

Front 25

Check valves

Back 25

Allow water flow in only one direction

Front 26

Pressure reducing valves

Back 26

Operate automatically to throttle water flow

Front 27

Altitude valves

Back 27

Are used to fill reservoirs

Front 28

Air relief valves

Back 28

Allows air to be released from the main or column pipe of a well

Front 29

There should be _____ ft of horizontal separation between water and sewer lines

Back 29

10

Front 30

There should be _____ “ of vertical separation between water and sewer lines

Back 30

18

Front 31

Fire hydrants should be spaced every _____ to ______ ft in residential areas

Back 31

300 to 600

Front 32

Fire hydrants should be place a maximum of _____ ft in commercial areas

Back 32

800

Front 33

Fire hydrants should be set back at least ____ ft from the curb

Back 33

2

Front 34

Taps are located _____ degrees down from the top of the main

Back 34

45

Front 35

The difference between the static groundwater and pumping level is

A. Radius of influence

B. Drawdown

C. Cone of depression

D. Watershed

Back 35

Drawdown

Front 36

One indication of corrosive water is a high concentration of

A. Algae odors

B. Carbon dioxide

C. Carbonates

D. Total dissolved solids

Back 36

Carbon dioxide

Front 37

The component part of a well include all the following except

A. Sanitary seal

B. Well screen

C. Pressure switch

D. Cement grout

Back 37

Pressure switch

Front 38

Which of the following is the principal constituent in water that causes corrosion of metals

A. Alkalinity

B. Dissolved oxygen

C. Hydrogen sulfide

D. Sodium chloride

Back 38

Hydrogen sulfide

Front 39

Velocity of flow in mains is usually expressed in terms of

A. Feet per second

B. Gallons per minute

C. Liters per foot

D. Milligrams per liter

Back 39

Feet per second

Front 40

Disease causing bacteria are known as

A. Coliform

B. Noncoliforms

C. Nonpathogenic

D. Pathogenic

Back 40

Pathogenic

Front 41

Normally surface water and groundwater have a pH range of

A. 9.0 to 10.5

B. 6.8 to 8.5

C. 1.5 to 4.0

D. None of the above

Back 41

6.8 to 8.5

Front 42

The component of a centrifugal pump sometimes installed on the end of a suction pipe to hold the priming is known as

A. Casing

B. Drain

C. Foot valve

D. Ventilator

Back 42

Foot valve

Front 43

The principal purpose of an altitude valve on a n elevated tank is to

Back 43

Control maximum filling level in distribution storage

Front 44

Moderately hard water will have a range of _____ to ______ mg/L as calcium carbonate

Back 44

61 to 120

Front 45

Common method for removing hydrogen sulfide from water is

A. Aeration

B. Coagulation

C. Filtration

D. Sedimentation

Back 45

Aeration

Front 46

Disease that may be transferred to a victim through water is

A. Diphtheria

B. Gonorrhea

C. Malaria

D. Typhoid

Back 46

Typhoid

Front 47

MCL

Back 47

Maximum contaminant level

Front 48

The primary source of trihalomethane (THMs) in drinking water is

A. Industrial solvents

B. Polymer coagulants

C. Leaching from lining in storage tanks

D. Reaction of chlorine compounds & organic matter

Back 48

Reaction of chlorine compounds & organic matter

Front 49

The primary health risk of trihalomethane (THMs) is

A. Gastrointestinal disease

B. Nervous system damage

C. Cancer

D. Increased blood pressure

Back 49

Cancer

Front 50

The primary health concern of synthetic organic compounds is

A. Acute respiratory disease

B. Cancer

C. “Blue baby syndrome”

D. Reduced iq in children

Back 50

Cancer

Front 51

Pressure in a pipeline may be affected by

Back 51

Friction and elevation

Front 52

High nitrate concentrations in water can cause

Back 52

Blue baby syndrome