2/22/25, 1:24 AM level 1 Water Operator Cert Exam Questions & Answers Updated Flashcards | Quizlet
level 1 Water Operator Cert Exam Questions &
Answers Updated
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Practice questions for this set
Learn 4 /7 Study with Learn
OCl- and HOCl
Give this one a try later!
A physical property, as opposed to
After chlorination, the free chlorine
1 a chemical property, important to
residual includes
water treatment is
When should polyphosphates use
Opening the discharge valve one for sequestration of iron and
3 4
full turn on a chlorine cylinder will manganese from a well be injected
into the process
Don't know?
Terms in this set (85)
https://quizlet.com/1009070026/level-1-water-operator-cert-exam-questions-answers-updated-flash-cards/?new 1/11
, 2/22/25, 1:24 AM level 1 Water Operator Cert Exam Questions & Answers Updated Flashcards | Quizlet
The two most important concentration of chlorine and contact time
factors impacting the
effectiveness of
chlorination are
The treatment process Stabilization
that controls corrosion or
scaling is known as
Permanganate reactions pH
are highly dependent
upon
Organism that causes cryptosporidiosis
illnesses and is the
hardest to kill
Disinfection of water 12-24 hours; 50 mg/L
wells with free chlorine
requires exposure for
______ hours at a
concentration of
______mg/L
Detention time in 15-45 minutes
flocculation basins are
usually designed to
provide for
Alum works best in a Ph 5.8 - 7.5
range of
What has little effect on gravity
colloidal particles since
they are so small
Natural electrical force zeta potential
that keeps colloidal
particles apart in water
treatment
https://quizlet.com/1009070026/level-1-water-operator-cert-exam-questions-answers-updated-flash-cards/?new 2/11
level 1 Water Operator Cert Exam Questions &
Answers Updated
Save
Practice questions for this set
Learn 4 /7 Study with Learn
OCl- and HOCl
Give this one a try later!
A physical property, as opposed to
After chlorination, the free chlorine
1 a chemical property, important to
residual includes
water treatment is
When should polyphosphates use
Opening the discharge valve one for sequestration of iron and
3 4
full turn on a chlorine cylinder will manganese from a well be injected
into the process
Don't know?
Terms in this set (85)
https://quizlet.com/1009070026/level-1-water-operator-cert-exam-questions-answers-updated-flash-cards/?new 1/11
, 2/22/25, 1:24 AM level 1 Water Operator Cert Exam Questions & Answers Updated Flashcards | Quizlet
The two most important concentration of chlorine and contact time
factors impacting the
effectiveness of
chlorination are
The treatment process Stabilization
that controls corrosion or
scaling is known as
Permanganate reactions pH
are highly dependent
upon
Organism that causes cryptosporidiosis
illnesses and is the
hardest to kill
Disinfection of water 12-24 hours; 50 mg/L
wells with free chlorine
requires exposure for
______ hours at a
concentration of
______mg/L
Detention time in 15-45 minutes
flocculation basins are
usually designed to
provide for
Alum works best in a Ph 5.8 - 7.5
range of
What has little effect on gravity
colloidal particles since
they are so small
Natural electrical force zeta potential
that keeps colloidal
particles apart in water
treatment
https://quizlet.com/1009070026/level-1-water-operator-cert-exam-questions-answers-updated-flash-cards/?new 2/11
