STUDY GUIDE COMPREHENSIVE REVIEW WITH
SOLVED SCENARIOS AND DETAILED ANSWERS
2026 EDITION
◉What are the detention times for setting basins? Answer: 6 hours for
normal, 4.5 for Softening
◉What type of reaction is coagulation? Answer: Chemical and physical
◉What does the reaction of Alum or iron compounds with natural
alkalinity in water form? Answer: Insoluble Hydroxide (Floc)
◉What is the maximum number of connections for a 2-inch line?
Answer: 10
◉What is the use of powdered activated carbon (PAC) dependent on?
Answer: Water treatment process
◉What is the first step after entering a chlorine room? Answer: Turn on
the fan