Water Treatment Grade 4 exam prep
1. which disinfectant would work best against Cryp- Ozone
tosporidium
2. The pH of a Water sample Is greater than the PHs so indicates the water is scale
the Langlier index forming
3. When water high in calcium bicarbonate is softened Sodium Bicarbonate re-
by ion exchange mains in the product wa-
ter
4. A bypass valve would be used with a gate valve
5. Where ground frost is expected the riser pipes in a 1-2 inches
meter pit should be atleast how far away from any wall
of the meter box to prevent freezing
6. which type of pipe joint is available in both bolted and Ball and Socket Joint
bolt less flexible pipe joint designs
7. which type of pipe joint permits flexible pipe align- push on joint
ment is inexpensive to manufacture and is easy to
assemble
8. new polyvinyl chloride pipe has a c-value of about 150+
9. which type of valve would be particularly useful for pinch valve
throttling the flow of corrosive liquids
10. Water meter pits are usually used in cold climates
11. fuel oil will permeate which type of pipe polyethylene pipe
12. An ion exchange softener is treating a flow rate of 39.6 hr
125 gpm. what is the operating time in hours if the
, Water Treatment Grade 4 exam prep
softener unit treats 297000 gallons before it requires
regeneration?
13. in describing pump operation what type of curve P-Q curve
shows the relationship between power and capacity
14. What is Head Loss energy used by water
when moving from point
to point
15. Static Suction Lift Difference in water place-
ment
16. What is Power Work done in a given time
17. if a water system collects at least 40 samples per no more than 5%
month for the analyses of total coliforms, what per-
centage of total coliform samples are acceptable for
the system to remain in compliance with the maxi-
mum contaminant level for total coliforms
18. water systems are required to achieve at least________ 4 log
removal and or inactivation of viruses between a point
where the raw water is not subject to recontamination
by surface water runoff and a point downstream be-
fore or at the first customer.
19. where are the sampling points located for required entry points to the distrib-
samplings of organics (except THMs) in a community ution system
water system
20. where are the sampling points located for required each entry point to the
sampling of natural radionuclides in a community wa- system
ter system
, Water Treatment Grade 4 exam prep
21. continuous chlorine residual monitoring is required population served is
where the water enters the distribution system under >3300 people.
the SWTR when the
22. a community water system must post the consumer 100000 people
confidence report on a publicly accessible website if it
serves more than
23. public water systems that cannot meet the required <2.0 mg/L
removal of TOCs can comply if the source water TOC
level is ________ calculated quarterly as a running an-
nual average
24. the Surface water treatment rule does not specify chloramine disinfection
which of the following treatment technology
25. a regulated organic contaminant concentration that is a teir 2 violation re-
exceeds the MCL quiring public notification
withing 30 days
26. operators must balance satisfying regulations on the meeting disinfection limits
amount of certain chlorinated organic compounds
with
27. a water system using conventional filtration treat- the treated water quarter-
ment does not have to use enhanced coagulation to ly running average TOC is
achieve the total organic carbon percent removal if less than 2.0 mg/L
28. the stage 1 DBPR established an MCL of _____ for .08 mg/L
TTHM ( total THMs)
29. the safe drinking water act defines a public water sys- 15;25
tem as a supply of piped water for human consump-
1. which disinfectant would work best against Cryp- Ozone
tosporidium
2. The pH of a Water sample Is greater than the PHs so indicates the water is scale
the Langlier index forming
3. When water high in calcium bicarbonate is softened Sodium Bicarbonate re-
by ion exchange mains in the product wa-
ter
4. A bypass valve would be used with a gate valve
5. Where ground frost is expected the riser pipes in a 1-2 inches
meter pit should be atleast how far away from any wall
of the meter box to prevent freezing
6. which type of pipe joint is available in both bolted and Ball and Socket Joint
bolt less flexible pipe joint designs
7. which type of pipe joint permits flexible pipe align- push on joint
ment is inexpensive to manufacture and is easy to
assemble
8. new polyvinyl chloride pipe has a c-value of about 150+
9. which type of valve would be particularly useful for pinch valve
throttling the flow of corrosive liquids
10. Water meter pits are usually used in cold climates
11. fuel oil will permeate which type of pipe polyethylene pipe
12. An ion exchange softener is treating a flow rate of 39.6 hr
125 gpm. what is the operating time in hours if the
, Water Treatment Grade 4 exam prep
softener unit treats 297000 gallons before it requires
regeneration?
13. in describing pump operation what type of curve P-Q curve
shows the relationship between power and capacity
14. What is Head Loss energy used by water
when moving from point
to point
15. Static Suction Lift Difference in water place-
ment
16. What is Power Work done in a given time
17. if a water system collects at least 40 samples per no more than 5%
month for the analyses of total coliforms, what per-
centage of total coliform samples are acceptable for
the system to remain in compliance with the maxi-
mum contaminant level for total coliforms
18. water systems are required to achieve at least________ 4 log
removal and or inactivation of viruses between a point
where the raw water is not subject to recontamination
by surface water runoff and a point downstream be-
fore or at the first customer.
19. where are the sampling points located for required entry points to the distrib-
samplings of organics (except THMs) in a community ution system
water system
20. where are the sampling points located for required each entry point to the
sampling of natural radionuclides in a community wa- system
ter system
, Water Treatment Grade 4 exam prep
21. continuous chlorine residual monitoring is required population served is
where the water enters the distribution system under >3300 people.
the SWTR when the
22. a community water system must post the consumer 100000 people
confidence report on a publicly accessible website if it
serves more than
23. public water systems that cannot meet the required <2.0 mg/L
removal of TOCs can comply if the source water TOC
level is ________ calculated quarterly as a running an-
nual average
24. the Surface water treatment rule does not specify chloramine disinfection
which of the following treatment technology
25. a regulated organic contaminant concentration that is a teir 2 violation re-
exceeds the MCL quiring public notification
withing 30 days
26. operators must balance satisfying regulations on the meeting disinfection limits
amount of certain chlorinated organic compounds
with
27. a water system using conventional filtration treat- the treated water quarter-
ment does not have to use enhanced coagulation to ly running average TOC is
achieve the total organic carbon percent removal if less than 2.0 mg/L
28. the stage 1 DBPR established an MCL of _____ for .08 mg/L
TTHM ( total THMs)
29. the safe drinking water act defines a public water sys- 15;25
tem as a supply of piped water for human consump-
