AWWA OPERATOR CERTIFICATION
STUDY GUIDE 4THED. - WATER
TREATMENT SAMPLE TEST 1 - (GA.
CLASS 3 TEST)
Which-of-the-following-well-types-is-most-protected-from-surface-contamination?---ans-
✔✔Artesian-Well
One-major-factor-that-leads-to-reservoir-turnover-is...---ans-✔✔The-upper-strata-
becoming-more-dense-and-sinking-to-the-bottom
What-is-the-pressure-in-pounds-per-square-inch-at-the-bottom-of-a-standpipe-filled-to-a-
height-of-47-feet?---ans-✔✔20.3
One-gallon-per-minute-equals-_____-gallons-per-day.---ans-✔✔1,440
Which-of-the-following-elements-cause-hardness-in-water?---ans-✔✔Calcium-and-
Magnesium
Chlorine-demand-increases-when-_____-increases.---ans-✔✔organic-matter
How-many-gallons-of-water-are-in-a-tank-84-inches-in-diameter-by-20-feet-high-when-the-
water-is-16-feet-deep?---ans-✔✔4,603
The-electrical-load-placed-on-a-single-circuit...---ans-✔✔should-be-limited-by-the-
maximum-current-rating-of-the-wiring-and-switches
Chlorine-is-most-commonly-used-in-water-treatment-for...---ans-✔✔disinfection
Sedimentation-is-a-process-that-_____-suspended-matter.---ans-✔✔settles
Fusible-plugs-on-chlorine-cylinders-are-designed-to-melt-at...---ans-✔✔158-degrees-
Farenheit
In-general,-when-the-pH-of-treated-water-is-below-6.5,-it-indicates-which-of-the-following?---
ans-✔✔water-that-tends-to-be-corrosive
, When-a-permit-is-required-to-enter-a-confined-space,-who-may-sign-the-permit?---ans-
✔✔the-supervisor
The-main-objection-to-"red-water"-is-that-it...---ans-✔✔stains-plumbing-and-clothes
one-cubic-foot-of-water-weighs...---ans-✔✔62.40-pounds
Daily-consumption-of-gaseous-chlorine-may-be-checked-by...---ans-✔✔a-platform-scale
The-permissible-exposure-limit-(PEL)-for-chlorine-is...---ans-✔✔0.5-ppm
A-single-sample-taken-without-considering-the-time-of-the-day-or-the-rate-of-flow-is-called-
a-_____-sample.---ans-✔✔grab
The-Total-Coliform-Rule-is-based-first-on...---ans-✔✔Presence-or-absence-of-coliforms-in-
a-sample
How-many-pounds-of-sodium-hypochlorite-containing-8%-available-chlorine-by-weight-
would-be-needed-to-provide-25-pounds-of-chlorine?---ans-✔✔312.5
What-effect-will-the-addition-of-lime,-caustic-soda,-or-soda-ash-have-on-the-pH-of-water?---
ans-✔✔increase
A-main-break-may-cause-low-pressure-in-the-distribution-system,-which-in-turn-may-result-
in...---ans-✔✔contamination-of-the-system-by-backsiphonage
The-primary-origin-of-coliforms-in-water-supplies-is...---ans-✔✔fecal-contamination-by-
warm-blooded-animals
The-primary-health-risk-associated-with-volatile-organic-chemicals-(VOC's)-is...---ans-
✔✔cancer
Which-of-the-following-best-describes-the-characteristics-of-chlorine-when-used-for-
disinfection-in-drinking-water?---ans-✔✔greenish-yellow,-nonflammable,-heavier-than-air
A-line-has-failed-and-60-yards-of-8-inch-main-must-be-replaced.-How-many-20-foot-pipe-
sections-will-be-required?---ans-✔✔9
Why-should-you-contact-other-area-companies-with-underground-utilities-before-starting-
an-underground-repair-job?---ans-✔✔to-ask-these-companies-to-mark-the-location-of-their-
utilities-in-the-area-of-the-repair-job
The-discharge-rate-of-a-piston-type-pump...---ans-✔✔is-constant-at-a-constant-speed
STUDY GUIDE 4THED. - WATER
TREATMENT SAMPLE TEST 1 - (GA.
CLASS 3 TEST)
Which-of-the-following-well-types-is-most-protected-from-surface-contamination?---ans-
✔✔Artesian-Well
One-major-factor-that-leads-to-reservoir-turnover-is...---ans-✔✔The-upper-strata-
becoming-more-dense-and-sinking-to-the-bottom
What-is-the-pressure-in-pounds-per-square-inch-at-the-bottom-of-a-standpipe-filled-to-a-
height-of-47-feet?---ans-✔✔20.3
One-gallon-per-minute-equals-_____-gallons-per-day.---ans-✔✔1,440
Which-of-the-following-elements-cause-hardness-in-water?---ans-✔✔Calcium-and-
Magnesium
Chlorine-demand-increases-when-_____-increases.---ans-✔✔organic-matter
How-many-gallons-of-water-are-in-a-tank-84-inches-in-diameter-by-20-feet-high-when-the-
water-is-16-feet-deep?---ans-✔✔4,603
The-electrical-load-placed-on-a-single-circuit...---ans-✔✔should-be-limited-by-the-
maximum-current-rating-of-the-wiring-and-switches
Chlorine-is-most-commonly-used-in-water-treatment-for...---ans-✔✔disinfection
Sedimentation-is-a-process-that-_____-suspended-matter.---ans-✔✔settles
Fusible-plugs-on-chlorine-cylinders-are-designed-to-melt-at...---ans-✔✔158-degrees-
Farenheit
In-general,-when-the-pH-of-treated-water-is-below-6.5,-it-indicates-which-of-the-following?---
ans-✔✔water-that-tends-to-be-corrosive
, When-a-permit-is-required-to-enter-a-confined-space,-who-may-sign-the-permit?---ans-
✔✔the-supervisor
The-main-objection-to-"red-water"-is-that-it...---ans-✔✔stains-plumbing-and-clothes
one-cubic-foot-of-water-weighs...---ans-✔✔62.40-pounds
Daily-consumption-of-gaseous-chlorine-may-be-checked-by...---ans-✔✔a-platform-scale
The-permissible-exposure-limit-(PEL)-for-chlorine-is...---ans-✔✔0.5-ppm
A-single-sample-taken-without-considering-the-time-of-the-day-or-the-rate-of-flow-is-called-
a-_____-sample.---ans-✔✔grab
The-Total-Coliform-Rule-is-based-first-on...---ans-✔✔Presence-or-absence-of-coliforms-in-
a-sample
How-many-pounds-of-sodium-hypochlorite-containing-8%-available-chlorine-by-weight-
would-be-needed-to-provide-25-pounds-of-chlorine?---ans-✔✔312.5
What-effect-will-the-addition-of-lime,-caustic-soda,-or-soda-ash-have-on-the-pH-of-water?---
ans-✔✔increase
A-main-break-may-cause-low-pressure-in-the-distribution-system,-which-in-turn-may-result-
in...---ans-✔✔contamination-of-the-system-by-backsiphonage
The-primary-origin-of-coliforms-in-water-supplies-is...---ans-✔✔fecal-contamination-by-
warm-blooded-animals
The-primary-health-risk-associated-with-volatile-organic-chemicals-(VOC's)-is...---ans-
✔✔cancer
Which-of-the-following-best-describes-the-characteristics-of-chlorine-when-used-for-
disinfection-in-drinking-water?---ans-✔✔greenish-yellow,-nonflammable,-heavier-than-air
A-line-has-failed-and-60-yards-of-8-inch-main-must-be-replaced.-How-many-20-foot-pipe-
sections-will-be-required?---ans-✔✔9
Why-should-you-contact-other-area-companies-with-underground-utilities-before-starting-
an-underground-repair-job?---ans-✔✔to-ask-these-companies-to-mark-the-location-of-their-
utilities-in-the-area-of-the-repair-job
The-discharge-rate-of-a-piston-type-pump...---ans-✔✔is-constant-at-a-constant-speed
