Water Treatment Operator Level 1 Exam Questions
with Correct Answers With Rationales 2025/2026
Newest
Sacrificial Anodes - ANSWER-A metal with a. negative
electrochemical potential that, when electrically coupled
with other metals, corrodes preferentially.
Make-up proportional blowdown - ANSWER-Directly
related to the amount of make-up water added to the
cooling tower. Amount is measured and triggers a timer.
Conductivity-based blowdown - ANSWER-Blowdown valve
is opened when a predetermined conductivity value is
reached. More sensitive to system upsets. Downside, if
calcium carbonate forms, lowers conductivity and gives a
, false sense, which causes blowdown to fail and can result
in more deposits.
Three categories of chemical inhibitors to form protective
layers - ANSWER-Cathodic, Anodic and General
Cathodic Inhibitors - ANSWER-Coat the cathodic surfaces
of a system.
Anodic inhibitors - ANSWER-Coat the anodic surfaces of a
system. Must make sure all areas are covered. Otherwise,
corrosion effects can worsen.
with Correct Answers With Rationales 2025/2026
Newest
Sacrificial Anodes - ANSWER-A metal with a. negative
electrochemical potential that, when electrically coupled
with other metals, corrodes preferentially.
Make-up proportional blowdown - ANSWER-Directly
related to the amount of make-up water added to the
cooling tower. Amount is measured and triggers a timer.
Conductivity-based blowdown - ANSWER-Blowdown valve
is opened when a predetermined conductivity value is
reached. More sensitive to system upsets. Downside, if
calcium carbonate forms, lowers conductivity and gives a
, false sense, which causes blowdown to fail and can result
in more deposits.
Three categories of chemical inhibitors to form protective
layers - ANSWER-Cathodic, Anodic and General
Cathodic Inhibitors - ANSWER-Coat the cathodic surfaces
of a system.
Anodic inhibitors - ANSWER-Coat the anodic surfaces of a
system. Must make sure all areas are covered. Otherwise,
corrosion effects can worsen.
