CA Water Treatment Operator T1-T4
Comprehensive Resource To Help You Ace 2026-2027
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!!
Current Update!!
1. The ideal pH for chlorine disinfection. - Correct Answer: <7.5
2. POS - Meaning/Definition - Correct Answer: 1. Point of Source.
A discharge of pollutants that comes out the end of a pipe or other clearly identifiable
conveyance.
3. What are the 3 types of Polymers? - Correct Answer: Cationic (positive charge)
Anionic (negative charge)
Non-Ionic (no charge)
Easy way to remember:
Cationic is positive because it has a "t" in it, which looks like a "+" sign.
Easy way to remember:
Anionic is negative because it has A Negative (ANionic) charge.
4. Polymers are also known as? - Correct Answer: Polyelectrolytes
5. What are polymers used for? - Correct Answer: They are used as filter aids in
addition to the primary coagulating chemicals.
,6. Free Chlorine Residual definition - Correct Answer: Includes chlorine in the forms of
Hypochlorous acid (HOCl) and hypochlorite ion.
7. TOC removal is based on these two parameters. - Correct Answer: 1. The
concentration of the TOC
2. The alkalinity of the water.
8. Tier 1 Violation notification time. - Correct Answer: Notify within 24 hours.
9. Tier 2 Violation notification time. - Correct Answer: Notify within 30 days (but ASAP).
10. Tier 3 Violation notification time. - Correct Answer: Notify within 1 year.
11. Chloramines vs Chlorine - Correct Answer: Chlorine is a more powerful disinfectant,
but chloramines have longer lasting residuals.
12. Dimictic - Correct Answer: A body of water (lake, reservoir) that turns over twice per
year.
13. Monomictic - Correct Answer: A body of water (lake, reservoir) that turns over once
per year.
14. Prescriptive Water Rights - Correct Answer: Rights that are acquired by diverting
water (illicitly) and putting it to use for a period of time specified by statute.
15. Riparian Water Rights - Correct Answer: Water rights given to land owners whose
land borders a source of surface water.
, 16. Appropriative Water Rights - Correct Answer: Ownership or rights to a supply of
water which is acquired for the beneficial use of the water.
17. Direct Filtration Steps - Correct Answer: 1. Coagulation
2. Flocculation
3. Filtration (silica sand, garnet, granulated media, anthracite coal)
No sedimentation.
18. Inline Filtration Steps - Correct Answer: 1. Coagulation
2. Filtration (granulated media)
Commonly used in pressure filters.
19. Conventional Filtration Steps - Correct Answer: 1. Coagulation
2. Flocculation
3. Sedimentation
4. Filtration (silica sand, garnet, granulated media, anthracite coal)
20. Slow Sand Filtration - Correct Answer: A process where low flows (typically <0.15
gpm/sq.ft.) of water are filtered through a sand bed.
21. A biological layer (Schmutzdecke) builds on the surface of the sand and aids in the
filtration process.
22. Color can be removed by (3 processes)? - Correct Answer: 1. Conventional Filtration
2. Membrane Filtration
Comprehensive Resource To Help You Ace 2026-2027
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!!
Current Update!!
1. The ideal pH for chlorine disinfection. - Correct Answer: <7.5
2. POS - Meaning/Definition - Correct Answer: 1. Point of Source.
A discharge of pollutants that comes out the end of a pipe or other clearly identifiable
conveyance.
3. What are the 3 types of Polymers? - Correct Answer: Cationic (positive charge)
Anionic (negative charge)
Non-Ionic (no charge)
Easy way to remember:
Cationic is positive because it has a "t" in it, which looks like a "+" sign.
Easy way to remember:
Anionic is negative because it has A Negative (ANionic) charge.
4. Polymers are also known as? - Correct Answer: Polyelectrolytes
5. What are polymers used for? - Correct Answer: They are used as filter aids in
addition to the primary coagulating chemicals.
,6. Free Chlorine Residual definition - Correct Answer: Includes chlorine in the forms of
Hypochlorous acid (HOCl) and hypochlorite ion.
7. TOC removal is based on these two parameters. - Correct Answer: 1. The
concentration of the TOC
2. The alkalinity of the water.
8. Tier 1 Violation notification time. - Correct Answer: Notify within 24 hours.
9. Tier 2 Violation notification time. - Correct Answer: Notify within 30 days (but ASAP).
10. Tier 3 Violation notification time. - Correct Answer: Notify within 1 year.
11. Chloramines vs Chlorine - Correct Answer: Chlorine is a more powerful disinfectant,
but chloramines have longer lasting residuals.
12. Dimictic - Correct Answer: A body of water (lake, reservoir) that turns over twice per
year.
13. Monomictic - Correct Answer: A body of water (lake, reservoir) that turns over once
per year.
14. Prescriptive Water Rights - Correct Answer: Rights that are acquired by diverting
water (illicitly) and putting it to use for a period of time specified by statute.
15. Riparian Water Rights - Correct Answer: Water rights given to land owners whose
land borders a source of surface water.
, 16. Appropriative Water Rights - Correct Answer: Ownership or rights to a supply of
water which is acquired for the beneficial use of the water.
17. Direct Filtration Steps - Correct Answer: 1. Coagulation
2. Flocculation
3. Filtration (silica sand, garnet, granulated media, anthracite coal)
No sedimentation.
18. Inline Filtration Steps - Correct Answer: 1. Coagulation
2. Filtration (granulated media)
Commonly used in pressure filters.
19. Conventional Filtration Steps - Correct Answer: 1. Coagulation
2. Flocculation
3. Sedimentation
4. Filtration (silica sand, garnet, granulated media, anthracite coal)
20. Slow Sand Filtration - Correct Answer: A process where low flows (typically <0.15
gpm/sq.ft.) of water are filtered through a sand bed.
21. A biological layer (Schmutzdecke) builds on the surface of the sand and aids in the
filtration process.
22. Color can be removed by (3 processes)? - Correct Answer: 1. Conventional Filtration
2. Membrane Filtration
