Water Operator Certification Study Material ( New Mexico) (Basic) Exam (La
est Update 2026) UPDATE!! (Recent exam) Fully solved & updated 2026 Mos
TESTED (2026
1. Maximum Contaminent Level MCL
2. Public water system is a system that serves a popula- 25
tion of ___ or more regularly
3. Maximum total chlorine residual ___ mg/l 4
4. What type of contaminant is Iron Secondary
5. Primary contaminant is sometimes added to water Fluoride
supplies to prevent tooth decay
6. The Failure of a public water system to comply with 48
the NM Drinking Water Regulations must be reported
to NMED within ___ hours
7. MCL for Total Trihalomethanes ___ mg/l 0.1
8. SDWA sampling results must be reported to New Mexico Enviroment
Department (NMED)
9. Ground water systems must sample for inorganic 3
chemicals every ___ years
10. The SDWA Compliance Cycle for Standardized Moni- 3
toring Rule consists of ___ Compliance Periods
11. ___ or less than 5% bacteriological samples must be 40
taken every month before a system is allowed to have
TWO positive samples without violating the drinking
water standard?
, Water Operator Certification Study Material ( New Mexico) (Basic) Exam (La
est Update 2026) UPDATE!! (Recent exam) Fully solved & updated 2026 Mos
TESTED (2026
12. Action level for Lead ___ mg/l 0.015
13. If Bacteriological retakes are done this month what is 5
the minimum number of samples that must be turned
in next month?
14. if a 3-log removal is required for Giardia Lamblia what 0.1
percentage of organisms can survive and still meet
requirements
15. Primary Inorganic Contaminant poses an immediate Nitrates
health risk
16. The Presence of Nitrates in the bloodstream that re- Blue Baby Syndrome
duces oxygen uptake that gives the skin a blue tint
17. Primary Contaminant that shields harmful bacteria Turbidity
from disinfection processes
18. Device used to measure NTU's Nephelometer
19. Turbidity is Measured with Turbidimeter or Neph-
elometer
20. Chemical sampling results be kept ___ years 10
21. Bacteriological sampling results be kept ___ years 5
22. Microorganisms whose presence in water indicates Indicator organism
probable presence of pathogens.
23. White powder used to neutralize chlorine Sodium Thiosulphate
, Water Operator Certification Study Material ( New Mexico) (Basic) Exam (La
est Update 2026) UPDATE!! (Recent exam) Fully solved & updated 2026 Mos
TESTED (2026
24. To insure the water being sampled is from the main Flush line
and not the customers plumbling
25. Number is used to determine how many Bac-t sam- People served
ples must be taken
26. Minimum number of Bac-T samples required each 1
month?
27. Anytime the MCL is exceeded and fecal coliform posi- Non-acute violation
tive results come back from any of the samples
28. If retakes are required this month what is the mini- 5
mum number of samples required next month
29. Bacteria that are found only in surface water supplies Cryptosporidium & Giar-
dia
30. How soon must NMED be notified that a Bacterial MCL 24
has been exceeded? ___ hours
31. Coliform group Indicator organism
32. Waterborne pathogens found in all water supplies Typhoid, Cholera, Dysen-
tery, Hepatitis, Paraty-
phoid (types A & B)
33. Disease causing Bacteria Pathogens
34. Water Universal solvent
35. Ground & Surface Two sources of water
est Update 2026) UPDATE!! (Recent exam) Fully solved & updated 2026 Mos
TESTED (2026
1. Maximum Contaminent Level MCL
2. Public water system is a system that serves a popula- 25
tion of ___ or more regularly
3. Maximum total chlorine residual ___ mg/l 4
4. What type of contaminant is Iron Secondary
5. Primary contaminant is sometimes added to water Fluoride
supplies to prevent tooth decay
6. The Failure of a public water system to comply with 48
the NM Drinking Water Regulations must be reported
to NMED within ___ hours
7. MCL for Total Trihalomethanes ___ mg/l 0.1
8. SDWA sampling results must be reported to New Mexico Enviroment
Department (NMED)
9. Ground water systems must sample for inorganic 3
chemicals every ___ years
10. The SDWA Compliance Cycle for Standardized Moni- 3
toring Rule consists of ___ Compliance Periods
11. ___ or less than 5% bacteriological samples must be 40
taken every month before a system is allowed to have
TWO positive samples without violating the drinking
water standard?
, Water Operator Certification Study Material ( New Mexico) (Basic) Exam (La
est Update 2026) UPDATE!! (Recent exam) Fully solved & updated 2026 Mos
TESTED (2026
12. Action level for Lead ___ mg/l 0.015
13. If Bacteriological retakes are done this month what is 5
the minimum number of samples that must be turned
in next month?
14. if a 3-log removal is required for Giardia Lamblia what 0.1
percentage of organisms can survive and still meet
requirements
15. Primary Inorganic Contaminant poses an immediate Nitrates
health risk
16. The Presence of Nitrates in the bloodstream that re- Blue Baby Syndrome
duces oxygen uptake that gives the skin a blue tint
17. Primary Contaminant that shields harmful bacteria Turbidity
from disinfection processes
18. Device used to measure NTU's Nephelometer
19. Turbidity is Measured with Turbidimeter or Neph-
elometer
20. Chemical sampling results be kept ___ years 10
21. Bacteriological sampling results be kept ___ years 5
22. Microorganisms whose presence in water indicates Indicator organism
probable presence of pathogens.
23. White powder used to neutralize chlorine Sodium Thiosulphate
, Water Operator Certification Study Material ( New Mexico) (Basic) Exam (La
est Update 2026) UPDATE!! (Recent exam) Fully solved & updated 2026 Mos
TESTED (2026
24. To insure the water being sampled is from the main Flush line
and not the customers plumbling
25. Number is used to determine how many Bac-t sam- People served
ples must be taken
26. Minimum number of Bac-T samples required each 1
month?
27. Anytime the MCL is exceeded and fecal coliform posi- Non-acute violation
tive results come back from any of the samples
28. If retakes are required this month what is the mini- 5
mum number of samples required next month
29. Bacteria that are found only in surface water supplies Cryptosporidium & Giar-
dia
30. How soon must NMED be notified that a Bacterial MCL 24
has been exceeded? ___ hours
31. Coliform group Indicator organism
32. Waterborne pathogens found in all water supplies Typhoid, Cholera, Dysen-
tery, Hepatitis, Paraty-
phoid (types A & B)
33. Disease causing Bacteria Pathogens
34. Water Universal solvent
35. Ground & Surface Two sources of water
