TCEQ - CLASS D WATER REVIEW
Who-is-authorized-to-remove-a-lock-and-tag-placed-on-a-piece-of-equipment-to-isolate-it-
for-maintenance?---ans-✔✔Only-the-person-who-placed-the-lock-and-tag
Although-each-step-of-the-water-treatment-process-is-important,-which-process-is-often-
referred-to-as-the-most-important?---ans-✔✔Disinfection
What-is/are-the-required-locations-for-vent(s)-in-a-chlorine-gas-cylinder-storage-room?---
ans-✔✔At-least-one-high-level-and-one-floor-level-vent
A-surface-water-treatment-plant-is-flowing-at-3.1-MGD.-How-many-gallons-per-minute-
(gpm)-is-this?---ans-✔✔2,153
Which-chemical-below-is-a-solid-form-of-chlorine-that-is-often-used-by-small-water-
systems-as-their-primary-disinfectant?---ans-✔✔Calcium-Hypochlorite
If-an-operator-knows-the-pumping-water-level-and-the-static-water-level-in-a-well,-he/she-
will-be-able-to-calculate-the:---ans-✔✔Drawdown
Coagulation-by-the-addition-of-positively-charged-ions-can-also-be-described-as:---ans-
✔✔Charge-neutralization
Convert-a-flow-rate-of-1,667-gallons-per-minute-(gpm)-to-units-of-million-gallons-per-day-
(MGD).---ans-✔✔2.4
What-is-the-minimum-acceptable-disinfection-residual-at-all-points-of-the-distribution-
system?-(choose-all-that-apply)---ans-✔✔0.2-mg/L-free-chlorine-residual-&-0.5-mg/L-
Chloramine-Residual
Pipe-and-fittings-used-in-public-water-systems-may-not-contain-more-than-____%-lead-or-
solder-and-flux-may-not-contain-more-than-____%-lead.---ans-✔✔0.25,-0.2
In-addition-to-the-normal-minimum-operating-pressure-of-35-psi,-what-is-the-minimum-
emergency-operating-pressure-a-public-water-supply-system-should-maintain?---ans-
✔✔20-psi
Which-of-the-below-options-are-common-types-of-pumps-for-use-in-deep-water-wells?-
(choose-all-that-apply)---ans-✔✔Submersible-pump-&-Vertical-Turbine-Pump
, How-much-time-does-the-system-operator-have-to-contact-the-TCEQ-by-phone-when-a-
contamination-event-occurs-in-a-public-water-system?---ans-✔✔24-Hours
What-is-it-called-when-chlorine-is-added-to-a-water-supply-and-it-is-all-used-up-by-reacting-
with-iron,-organics,-or-bacteria?---ans-✔✔Demand
What-State-Agency-is-responsible-for-enforcing-the-Safe-Drinking-Water-Act-in-Texas?---
ans-✔✔Texas-Commission-on-Environmental-Quality-(TCEQ)
What-are-public-water-systems-expected-to-provide-to-their-customers-at-all-times?---ans-
✔✔Proper-disinfection-of-delivered-water
Sufficient-water-pressure
Sufficient-quantity-of-water
(ALL-OF-THE-ABOVE)
What-is-the-natural-exchange-of-water-between-the-earth-and-the-atmosphere-called?---
ans-✔✔Hydrologic-Cycle
The-chlorine-dose-is-the-combination-of-system-chlorine-demand-plus-the-desired-
chlorine:---ans-✔✔Residual
Where-is-a-Corporation-Stop-located-in-the-distribution-system?---ans-✔✔Tapped-into-the-
water-main
Use-the-formula-provided-and-the-5-step-approach-to-solve-this-problem.
The-Fluoridation-system-is-feeding-the-system-at-a-dose-of-0.8-mg/L.-How-many-pounds-
of-fluoride-are-added-per-day-if-it-is-added-to-a-flow-of-720-gpm?
lb/day-=-(Flow,MGD)-*-(Dose,-mg/L)-*-(8.34)---ans-✔✔6.9-lb/day
What-would-a-physical-connection-between-a-public-water-supply-and-a-private-well-
(unknown-water-quality)-be-considered?---ans-✔✔A-Cross-Connection
What-is-the-minimum-distance-required-to-separate-cattle-feedlots,-wastewater-treatment-
plants-and-landfills-from-a-public-well?---ans-✔✔500-Feet
Gloves,-face-shields,-hearing-protection,-hard-hats,-and-safety-glasses-are-all-examples-
of:---ans-✔✔PPE
Newly-installed-or-repaired-water-lines-must-be-disinfected-prior-to-placing-them-in-
service.-What-chlorine-dose-is-required-for-non-emergency-disinfection?---ans-✔✔50-
mg/L
When-collecting-a-routine-distribution-system-sample-for-Total-Coliform-testing,-which-of-
the-following-is-required?---ans-✔✔Use-of-a-sterile-sample-container
Who-is-authorized-to-remove-a-lock-and-tag-placed-on-a-piece-of-equipment-to-isolate-it-
for-maintenance?---ans-✔✔Only-the-person-who-placed-the-lock-and-tag
Although-each-step-of-the-water-treatment-process-is-important,-which-process-is-often-
referred-to-as-the-most-important?---ans-✔✔Disinfection
What-is/are-the-required-locations-for-vent(s)-in-a-chlorine-gas-cylinder-storage-room?---
ans-✔✔At-least-one-high-level-and-one-floor-level-vent
A-surface-water-treatment-plant-is-flowing-at-3.1-MGD.-How-many-gallons-per-minute-
(gpm)-is-this?---ans-✔✔2,153
Which-chemical-below-is-a-solid-form-of-chlorine-that-is-often-used-by-small-water-
systems-as-their-primary-disinfectant?---ans-✔✔Calcium-Hypochlorite
If-an-operator-knows-the-pumping-water-level-and-the-static-water-level-in-a-well,-he/she-
will-be-able-to-calculate-the:---ans-✔✔Drawdown
Coagulation-by-the-addition-of-positively-charged-ions-can-also-be-described-as:---ans-
✔✔Charge-neutralization
Convert-a-flow-rate-of-1,667-gallons-per-minute-(gpm)-to-units-of-million-gallons-per-day-
(MGD).---ans-✔✔2.4
What-is-the-minimum-acceptable-disinfection-residual-at-all-points-of-the-distribution-
system?-(choose-all-that-apply)---ans-✔✔0.2-mg/L-free-chlorine-residual-&-0.5-mg/L-
Chloramine-Residual
Pipe-and-fittings-used-in-public-water-systems-may-not-contain-more-than-____%-lead-or-
solder-and-flux-may-not-contain-more-than-____%-lead.---ans-✔✔0.25,-0.2
In-addition-to-the-normal-minimum-operating-pressure-of-35-psi,-what-is-the-minimum-
emergency-operating-pressure-a-public-water-supply-system-should-maintain?---ans-
✔✔20-psi
Which-of-the-below-options-are-common-types-of-pumps-for-use-in-deep-water-wells?-
(choose-all-that-apply)---ans-✔✔Submersible-pump-&-Vertical-Turbine-Pump
, How-much-time-does-the-system-operator-have-to-contact-the-TCEQ-by-phone-when-a-
contamination-event-occurs-in-a-public-water-system?---ans-✔✔24-Hours
What-is-it-called-when-chlorine-is-added-to-a-water-supply-and-it-is-all-used-up-by-reacting-
with-iron,-organics,-or-bacteria?---ans-✔✔Demand
What-State-Agency-is-responsible-for-enforcing-the-Safe-Drinking-Water-Act-in-Texas?---
ans-✔✔Texas-Commission-on-Environmental-Quality-(TCEQ)
What-are-public-water-systems-expected-to-provide-to-their-customers-at-all-times?---ans-
✔✔Proper-disinfection-of-delivered-water
Sufficient-water-pressure
Sufficient-quantity-of-water
(ALL-OF-THE-ABOVE)
What-is-the-natural-exchange-of-water-between-the-earth-and-the-atmosphere-called?---
ans-✔✔Hydrologic-Cycle
The-chlorine-dose-is-the-combination-of-system-chlorine-demand-plus-the-desired-
chlorine:---ans-✔✔Residual
Where-is-a-Corporation-Stop-located-in-the-distribution-system?---ans-✔✔Tapped-into-the-
water-main
Use-the-formula-provided-and-the-5-step-approach-to-solve-this-problem.
The-Fluoridation-system-is-feeding-the-system-at-a-dose-of-0.8-mg/L.-How-many-pounds-
of-fluoride-are-added-per-day-if-it-is-added-to-a-flow-of-720-gpm?
lb/day-=-(Flow,MGD)-*-(Dose,-mg/L)-*-(8.34)---ans-✔✔6.9-lb/day
What-would-a-physical-connection-between-a-public-water-supply-and-a-private-well-
(unknown-water-quality)-be-considered?---ans-✔✔A-Cross-Connection
What-is-the-minimum-distance-required-to-separate-cattle-feedlots,-wastewater-treatment-
plants-and-landfills-from-a-public-well?---ans-✔✔500-Feet
Gloves,-face-shields,-hearing-protection,-hard-hats,-and-safety-glasses-are-all-examples-
of:---ans-✔✔PPE
Newly-installed-or-repaired-water-lines-must-be-disinfected-prior-to-placing-them-in-
service.-What-chlorine-dose-is-required-for-non-emergency-disinfection?---ans-✔✔50-
mg/L
When-collecting-a-routine-distribution-system-sample-for-Total-Coliform-testing,-which-of-
the-following-is-required?---ans-✔✔Use-of-a-sterile-sample-container
