NEW MEXICO WATER OPERATOR CERTIFICATION
ACTUAL EXAM QUESTIONS AD CORRECT DETAILED
ANSWERS 2026 (VERIFIED ANSWERS) ALREADY
GRADED A+
Maximum Contaminent Level - ANSWERS-MCL
Public water system is a system that serves a population of ___ or more
regularly - ANSWERS-25
Maximum total chlorine residual ___ mg/l - ANSWERS-4
What type of contaminant is Iron - ANSWERS-Secondary
Primary contaminant is sometimes added to water supplies to prevent tooth
decay - ANSWERS-Fluoride
The Failure of a public water system to comply with the NM Drinking Water
Regulations must be reported to NMED within ___ hours - ANSWERS-48
,MCL for Total Trihalomethanes ___ mg/l - ANSWERS-0.1
SDWA sampling results must be reported to - ANSWERS-New Mexico
Enviroment Department (NMED)
Ground water systems must sample for inorganic chemicals every ___ years -
ANSWERS-3
The SDWA Compliance Cycle for Standardized Monitoring Rule consists of ___
Compliance Periods - ANSWERS-3
___ or less than 5% bacteriological samples must be taken every month before a
system is allowed to have TWO positive samples without violating the drinking
water standard? - ANSWERS-40
Action level for Lead ___ mg/l - ANSWERS-0.015
If Bacteriological retakes are done this month what is the minimum number of
samples that must be turned in next month? - ANSWERS-5
if a 3-log removal is required for Giardia Lamblia what percentage of organisms
can survive and still meet requirements - ANSWERS-0.1
Primary Inorganic Contaminant poses an immediate health risk - ANSWERS-
Nitrates
, The Presence of Nitrates in the bloodstream that reduces oxygen uptake that
gives the skin a blue tint - ANSWERS-Blue Baby Syndrome
Primary Contaminant that shields harmful bacteria from disinfection processes -
ANSWERS-Turbidity
Device used to measure NTU's - ANSWERS-Nephelometer
Turbidity is Measured with - ANSWERS-Turbidimeter or Nephelometer
Chemical sampling results be kept ___ years - ANSWERS-10
Bacteriological sampling results be kept ___ years - ANSWERS-5
Microorganisms whose presence in water indicates probable presence of
pathogens. - ANSWERS-Indicator organism
White powder used to neutralize chlorine - ANSWERS-Sodium Thiosulphate
To insure the water being sampled is from the main and not the customers
plumbling - ANSWERS-Flush line
Number is used to determine how many Bac-t samples must be taken -
ANSWERS-People served
ACTUAL EXAM QUESTIONS AD CORRECT DETAILED
ANSWERS 2026 (VERIFIED ANSWERS) ALREADY
GRADED A+
Maximum Contaminent Level - ANSWERS-MCL
Public water system is a system that serves a population of ___ or more
regularly - ANSWERS-25
Maximum total chlorine residual ___ mg/l - ANSWERS-4
What type of contaminant is Iron - ANSWERS-Secondary
Primary contaminant is sometimes added to water supplies to prevent tooth
decay - ANSWERS-Fluoride
The Failure of a public water system to comply with the NM Drinking Water
Regulations must be reported to NMED within ___ hours - ANSWERS-48
,MCL for Total Trihalomethanes ___ mg/l - ANSWERS-0.1
SDWA sampling results must be reported to - ANSWERS-New Mexico
Enviroment Department (NMED)
Ground water systems must sample for inorganic chemicals every ___ years -
ANSWERS-3
The SDWA Compliance Cycle for Standardized Monitoring Rule consists of ___
Compliance Periods - ANSWERS-3
___ or less than 5% bacteriological samples must be taken every month before a
system is allowed to have TWO positive samples without violating the drinking
water standard? - ANSWERS-40
Action level for Lead ___ mg/l - ANSWERS-0.015
If Bacteriological retakes are done this month what is the minimum number of
samples that must be turned in next month? - ANSWERS-5
if a 3-log removal is required for Giardia Lamblia what percentage of organisms
can survive and still meet requirements - ANSWERS-0.1
Primary Inorganic Contaminant poses an immediate health risk - ANSWERS-
Nitrates
, The Presence of Nitrates in the bloodstream that reduces oxygen uptake that
gives the skin a blue tint - ANSWERS-Blue Baby Syndrome
Primary Contaminant that shields harmful bacteria from disinfection processes -
ANSWERS-Turbidity
Device used to measure NTU's - ANSWERS-Nephelometer
Turbidity is Measured with - ANSWERS-Turbidimeter or Nephelometer
Chemical sampling results be kept ___ years - ANSWERS-10
Bacteriological sampling results be kept ___ years - ANSWERS-5
Microorganisms whose presence in water indicates probable presence of
pathogens. - ANSWERS-Indicator organism
White powder used to neutralize chlorine - ANSWERS-Sodium Thiosulphate
To insure the water being sampled is from the main and not the customers
plumbling - ANSWERS-Flush line
Number is used to determine how many Bac-t samples must be taken -
ANSWERS-People served
