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New Mexico Water Operator Certification
Actual Exam, Study Guide And Practice Exam
Newest 2025/2026 Complete Questions And
Correct Detailed Answers (Verified Answers)
|Already Graded A+||Brand New Version!!
What is MCL? - . . ANSWER ✔ ✔Maximum
Contaminent Level (MCL)
A public water system is any system that serves a
population greater that or equal to ? - . . ANSWER ✔
✔15 services connections or 25 people regulary
What is the Maximum total chlorine residual allowed by
the Disinfectant-Disinfection By-Prouducts Rule - . .
ANSWER ✔ ✔4 mg/l
What type of contaminant is Iron? - . . ANSWER ✔
✔Secondary
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Which Primary Contaminant is sometimes added to water
supplies to prevent tooth decay? - . . ANSWER ✔
✔Fluoride
The Failure of a public water system to comply with the
NM Drinking Water Regulations must be reported to
NMED within? - . . ANSWER ✔ ✔48 hours
The MCl for Total Trihalomethanes is? - . . ANSWER ✔
✔0.1mg/l
SDWA sampling results must be reported to ? - . .
ANSWER ✔ ✔New Mexico Enviroment Department
(NMED)
Ground water systems must sample for inorganic
chemicals every? - . . ANSWER ✔ ✔(3) Three Years
The SDWA Compliance Cycle for Standardized Monitoring
Rule consists of Three? - . . ANSWER ✔ ✔Compliance
Periods
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How many bacterilogical samples(BAC-T) must be taken
every month before a system is allowed to have TWO
positive samples without violating the drinking water
standard? - . . ANSWER ✔ ✔40 or less then 5% on
monthly samples
What are the action levels for Lead and Copper? - . .
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? - . . ANSWER ✔ ✔5 samples
if a 3-log removal is required for Giardia Lamblia what
percentage of organisms can survive and still meet
requirements ? - . . ANSWER ✔ ✔0.1 %
which Primary Inorganic Contaminant poses an
immediate health risk? - . . ANSWER ✔ ✔Nitrates
Why do Nitrates poses immediate health risk? - . .
ANSWER ✔ ✔Pregnant mothers and infants under 18
months can develop a condition known as Blue Baby
Syndrome
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What is Blue Baby Syndrome? - . . ANSWER ✔ ✔The
Presence of Nitrates in the bloodstream that reduces
oxygen uptake that gives the skin a blue tint
Why is Turbidity a Primary Contaminant? - . . ANSWER
✔ ✔It shields harmful bacteria from disinfection
processes
What is a Nephelometer? - . . ANSWER ✔ ✔Device
used to measure NTU's
Turbidity is Measured with? - . . ANSWER ✔
✔Turbidimeter or Nephelometer
How Long must chemical sampling results be kept? - . .
ANSWER ✔ ✔10 Years
How long must Bacteriological sampling results be kept? -
. . ANSWER ✔ ✔5 years
What is the definitioin of a indicator organism? - . .
ANSWER ✔ ✔microorganisms whose presence in water
New Mexico Water Operator Certification
Actual Exam, Study Guide And Practice Exam
Newest 2025/2026 Complete Questions And
Correct Detailed Answers (Verified Answers)
|Already Graded A+||Brand New Version!!
What is MCL? - . . ANSWER ✔ ✔Maximum
Contaminent Level (MCL)
A public water system is any system that serves a
population greater that or equal to ? - . . ANSWER ✔
✔15 services connections or 25 people regulary
What is the Maximum total chlorine residual allowed by
the Disinfectant-Disinfection By-Prouducts Rule - . .
ANSWER ✔ ✔4 mg/l
What type of contaminant is Iron? - . . ANSWER ✔
✔Secondary
,2|Page
Which Primary Contaminant is sometimes added to water
supplies to prevent tooth decay? - . . ANSWER ✔
✔Fluoride
The Failure of a public water system to comply with the
NM Drinking Water Regulations must be reported to
NMED within? - . . ANSWER ✔ ✔48 hours
The MCl for Total Trihalomethanes is? - . . ANSWER ✔
✔0.1mg/l
SDWA sampling results must be reported to ? - . .
ANSWER ✔ ✔New Mexico Enviroment Department
(NMED)
Ground water systems must sample for inorganic
chemicals every? - . . ANSWER ✔ ✔(3) Three Years
The SDWA Compliance Cycle for Standardized Monitoring
Rule consists of Three? - . . ANSWER ✔ ✔Compliance
Periods
,3|Page
How many bacterilogical samples(BAC-T) must be taken
every month before a system is allowed to have TWO
positive samples without violating the drinking water
standard? - . . ANSWER ✔ ✔40 or less then 5% on
monthly samples
What are the action levels for Lead and Copper? - . .
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? - . . ANSWER ✔ ✔5 samples
if a 3-log removal is required for Giardia Lamblia what
percentage of organisms can survive and still meet
requirements ? - . . ANSWER ✔ ✔0.1 %
which Primary Inorganic Contaminant poses an
immediate health risk? - . . ANSWER ✔ ✔Nitrates
Why do Nitrates poses immediate health risk? - . .
ANSWER ✔ ✔Pregnant mothers and infants under 18
months can develop a condition known as Blue Baby
Syndrome
, 4|Page
What is Blue Baby Syndrome? - . . ANSWER ✔ ✔The
Presence of Nitrates in the bloodstream that reduces
oxygen uptake that gives the skin a blue tint
Why is Turbidity a Primary Contaminant? - . . ANSWER
✔ ✔It shields harmful bacteria from disinfection
processes
What is a Nephelometer? - . . ANSWER ✔ ✔Device
used to measure NTU's
Turbidity is Measured with? - . . ANSWER ✔
✔Turbidimeter or Nephelometer
How Long must chemical sampling results be kept? - . .
ANSWER ✔ ✔10 Years
How long must Bacteriological sampling results be kept? -
. . ANSWER ✔ ✔5 years
What is the definitioin of a indicator organism? - . .
ANSWER ✔ ✔microorganisms whose presence in water
