WASTEWATER OPERATOR CLASS C FINAL PAPER 2026 COMPLETE QUESTIONS AND ANSWERS ALREADY PASSED

WASTEWATER OPERATOR CLASS C FINAL
PAPER 2026 COMPLETE QUESTIONS AND
ANSWERS ALREADY PASSED



◉ Name the 3 types of disinfection. Answer: 1) HEAT - boiling



2) RADIANT - uv lights



3) CHEMICAL - Chlorine, Ozone



◉ List 6 WATERBOURNE illnesses of concern. Answer: Cholera
Giardiasis Dysentery Hepatitis Gastroenteritis Typhoid




"Coughing Greatly Disrupts Healthy Growth Today."



◉ How does high turbidity water harm disinfection. Answer: the
turbidity causing particles shield the bacteria from contact with the
disinfecting agent

, ◉ Difference between disinfection and sterilization. Answer:
*disinfection inactivates pathogenic organisms

-they can't reproduce to build up harmful numbers....giving your
immune system a chance



*sterilization destroys ALL organisms

- no harm because ITS ALL DEAD



◉ Does liquid chlorine lower or raise the pH of water?. Answer: Liquid
RAISES pH of water



Liquid - Sodium Hypochlorite aka Bleach (5%-15%)



◉ Does solid chlorine lower or raise the pH of water?. Answer: solid
RAISES pH of water



Calcium Hypochlorite aka High Test Chlorine (65%-75%)



◉ Does pure gas chlorine lower or raise the pH of water?. Answer: gas
LOWERS pH of water