1
WATER OPERATOR CERTIFICATION STUDY MATERIAL
(NEW MEXICO) 2025 ACTUAL EXAM QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
ALL ANSWERED {106 Q & A} ALREADY GRADED A+ |
GUARANTEED PASS
What type of contaminant is Iron? - ✔✔✔ Correct Answer > Secondary
What is MCL? - ✔✔✔ Correct Answer > Maximum Contaminent Level (MCL)
What is the procedure for disinfecting water lines? - ✔✔✔ Correct Answer
> 1.Flush the line. 2.Disinfect the line. Enough chlorine should be
added to create a 50 mg/l dosage with a 5 mg/l residual after
24hours. 3.Flush the line again 4. After the line is refilled, take
BAC-T samples from the line. If negative results come back, the
line is ready to be put into service.
A public water system is any system that serves a population
greater that or equal to? - ✔✔✔ Correct Answer > 15 services connections
or 25 people regulary
,2
What is the Maximum total chlorine residual allowed by the
Disinfectant-Disinfection By-Prouducts Rule - ✔✔✔ Correct Answer > 4
mg/l
Which Primary Contaminant is sometimes added to water
supplies to prevent tooth decay? - ✔✔✔ Correct Answer > Fluoride
The Failure of a public water system to comply with the NM
Drinking Water Regulations must be reported to NMED within? -
✔✔✔ Correct Answer > 48 hours
The MCl for Total Trihalomethanes is? - ✔✔✔ Correct Answer > 0.1mg/l
SDWA sampling results must be reported to ? - ✔✔✔ Correct Answer >
New Mexico Enviroment Department (NMED)
Ground water systems must sample for inorganic chemicals
every? - ✔✔✔ Correct Answer > (3) Three Years
The SDWA Compliance Cycle for Standardized Monitoring Rule
consists of Three? - ✔✔✔ Correct Answer > Compliance Periods
How many bacterilogical samples(BAC-T) must be taken every
month before a system is allowed to have TWO positive samples
, 3
without violating the drinking water standard? - ✔✔✔ Correct Answer > 40
or less then 5% on monthly samples
What are the action levels for Lead and Copper? - ✔✔✔ Correct Answer >
0.015 mg/l Lead 1.3 mg/l Copper
If Bacteriological retakes are done this month what is the
minimum number of samples that must be turned in next month?
- ✔✔✔ Correct Answer > 5 samples
if a 3-log removal is required for Giardia Lamblia what
percentage of organisms can survive and still meet requirements
? - ✔✔✔ Correct Answer > 0.1 %
which Primary Inorganic Contaminant poses an immediate health
risk? - ✔✔✔ Correct Answer > Nitrates
Why do Nitrates poses immediate health risk? - ✔✔✔ Correct Answer >
Pregnant mothers and infants under 18 months can develop a
condition known as Blue Baby Syndrome
What is Blue Baby Syndrome? - ✔✔✔ Correct Answer > The Presence of
Nitrates in the bloodstream that reduces oxygen uptake that
gives the skin a blue tint
WATER OPERATOR CERTIFICATION STUDY MATERIAL
(NEW MEXICO) 2025 ACTUAL EXAM QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
ALL ANSWERED {106 Q & A} ALREADY GRADED A+ |
GUARANTEED PASS
What type of contaminant is Iron? - ✔✔✔ Correct Answer > Secondary
What is MCL? - ✔✔✔ Correct Answer > Maximum Contaminent Level (MCL)
What is the procedure for disinfecting water lines? - ✔✔✔ Correct Answer
> 1.Flush the line. 2.Disinfect the line. Enough chlorine should be
added to create a 50 mg/l dosage with a 5 mg/l residual after
24hours. 3.Flush the line again 4. After the line is refilled, take
BAC-T samples from the line. If negative results come back, the
line is ready to be put into service.
A public water system is any system that serves a population
greater that or equal to? - ✔✔✔ Correct Answer > 15 services connections
or 25 people regulary
,2
What is the Maximum total chlorine residual allowed by the
Disinfectant-Disinfection By-Prouducts Rule - ✔✔✔ Correct Answer > 4
mg/l
Which Primary Contaminant is sometimes added to water
supplies to prevent tooth decay? - ✔✔✔ Correct Answer > Fluoride
The Failure of a public water system to comply with the NM
Drinking Water Regulations must be reported to NMED within? -
✔✔✔ Correct Answer > 48 hours
The MCl for Total Trihalomethanes is? - ✔✔✔ Correct Answer > 0.1mg/l
SDWA sampling results must be reported to ? - ✔✔✔ Correct Answer >
New Mexico Enviroment Department (NMED)
Ground water systems must sample for inorganic chemicals
every? - ✔✔✔ Correct Answer > (3) Three Years
The SDWA Compliance Cycle for Standardized Monitoring Rule
consists of Three? - ✔✔✔ Correct Answer > Compliance Periods
How many bacterilogical samples(BAC-T) must be taken every
month before a system is allowed to have TWO positive samples
, 3
without violating the drinking water standard? - ✔✔✔ Correct Answer > 40
or less then 5% on monthly samples
What are the action levels for Lead and Copper? - ✔✔✔ Correct Answer >
0.015 mg/l Lead 1.3 mg/l Copper
If Bacteriological retakes are done this month what is the
minimum number of samples that must be turned in next month?
- ✔✔✔ Correct Answer > 5 samples
if a 3-log removal is required for Giardia Lamblia what
percentage of organisms can survive and still meet requirements
? - ✔✔✔ Correct Answer > 0.1 %
which Primary Inorganic Contaminant poses an immediate health
risk? - ✔✔✔ Correct Answer > Nitrates
Why do Nitrates poses immediate health risk? - ✔✔✔ Correct Answer >
Pregnant mothers and infants under 18 months can develop a
condition known as Blue Baby Syndrome
What is Blue Baby Syndrome? - ✔✔✔ Correct Answer > The Presence of
Nitrates in the bloodstream that reduces oxygen uptake that
gives the skin a blue tint
