What is the most common type of hardness in water? - Answer Calcium and
magnesium
What is formed when calcium and magnesium carbonates are combined with
carbon dioxide? - Answer Calcium and magnesium bicarbonates called carbonate
hardness
TCEQ Surface Water B License Test with Questions
and Correct Answers| Latest Update | Verified
What is the most common type of hardness in water? - Answer Calcium and
magnesium
What is formed when calcium and magnesium carbonates are combined with
carbon dioxide? - Answer Calcium and magnesium bicarbonates called carbonate
hardness
What are the factors affecting hydraulic gradient? - Answer Emergency demand,
throttled valves, pipe diameter, flows that are too small or too great
What does hard water cause? - Answer Scale
What is the maximum combined filter NTUs? - Answer 0.3 NTUs or less in 95% of
the monthly samples, never exceed 1 NTU
What must membrane facilities meet? - Answer Site-specific performance
approved by TCEQ
What is the maximum NTU that individual filters cannot exceed? - Answer 1
What is the maximum NTU that individual filters can exceed after 4 hours of
returning to service in systems serving 10,000 or more? - Answer 5
, What is required for water with very fine suspended solids? - Answer Increased
coagulant dosage
At what pH does water with high amounts of color coagulate better? - Answer
Low pH
What is the detention time for flocculation and settling? - Answer 6 hours
What are acute violations? - Answer Tier 1 violations that have significant
potential for serious, adverse effects on public health
What are non-acute violations? - Answer Tier 2 violations that do not pose an
immediate risk to public health, but could pose risk to the public
Why should you not completely drain a tank? - Answer N/A
Who receives the Consumer Confidence Report (CCR)? - Answer All people in the
water system
During a jar test, which of the following cannot be observed? - Answer Chemical
Use
What is a common chemical used in disinfection of a small water supply? - Answer
Sodium hypochlorite (liquid bleach)
What does sand filtration remove? - Answer Turbidity
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