1
For Expert help and assignment solutions, +254707240657
Water Operator Certification Study
Material ( New Mexico) Questions and
Answers (100% Correct Answers) Already
Graded A+
What is MCL?—Ans: Maximum Contaminent Level (MCL)
A public water system is any system that serves a population
© 2025 Assignment Expert
greater that or equal to ?—Ans: 15 services connections or 25
people regulary
What is the Maximum total chlorine residual allowed by the
Disinfectant-Disinfection By-Prouducts Rule—Ans: 4 mg/l
Guru01 - Stuvia
What type of contaminant is Iron?—Ans: Secondary
Which Primary Contaminant is sometimes added to water supplies
to prevent tooth decay?—Ans: Fluoride
The Failure of a public water system to comply with the NM
Drinking Water Regulations must be reported to NMED within?—
Ans: 48 hours
The MCl for Total Trihalomethanes is?—Ans: 0.1mg/l
SDWA sampling results must be reported to ?—Ans: New Mexico
Enviroment Department (NMED)
Ground water systems must sample for inorganic chemicals
every?—Ans: (3) Three Years
The SDWA Compliance Cycle for Standardized Monitoring Rule
consists of Three?—Ans: Compliance Periods
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?—Ans: 40 or less
then 5% on monthly samples
, 2
For Expert help and assignment solutions, +254707240657
What are the action levels for Lead and Copper?—Ans: 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?—Ans: 5
samples
if a 3-log removal is required for Giardia Lamblia what percentage
of organisms can survive and still meet requirements ?—Ans: 0.1 %
which Primary Inorganic Contaminant poses an immediate health
risk?—Ans: Nitrates
Why do Nitrates poses immediate health risk?—Ans: Pregnant
mothers and infants under 18 months can develop a condition
© 2025 Assignment Expert
known as Blue Baby Syndrome
What is Blue Baby Syndrome?—Ans: The Presence of Nitrates in
the bloodstream that reduces oxygen uptake that gives the skin a
Guru01 - Stuvia
blue tint
Why is Turbidity a Primary Contaminant?—Ans: It shields harmful
bacteria from disinfection processes
What is a Nephelometer?—Ans: Device used to measure NTU's
Turbidity is Measured with?—Ans: Turbidimeter or Nephelometer
How Long must chemical sampling results be kept?—Ans: 10
Years
How long must Bacteriological sampling results be kept?—Ans: 5
years
What is the definitioin of a indicator organism?—Ans:
microorganisms whose presence in water indicates probable
presence of pathogens (disease-causing organisms).
What is Sodium Thiosulphate?—Ans: white powder used to
Neutralize any chlorine that may kill bacteria
Why should you Flush sample line before sampling?—Ans: To
insure the water being sampled is from the main and not the
customers plumbling
For Expert help and assignment solutions, +254707240657
Water Operator Certification Study
Material ( New Mexico) Questions and
Answers (100% Correct Answers) Already
Graded A+
What is MCL?—Ans: Maximum Contaminent Level (MCL)
A public water system is any system that serves a population
© 2025 Assignment Expert
greater that or equal to ?—Ans: 15 services connections or 25
people regulary
What is the Maximum total chlorine residual allowed by the
Disinfectant-Disinfection By-Prouducts Rule—Ans: 4 mg/l
Guru01 - Stuvia
What type of contaminant is Iron?—Ans: Secondary
Which Primary Contaminant is sometimes added to water supplies
to prevent tooth decay?—Ans: Fluoride
The Failure of a public water system to comply with the NM
Drinking Water Regulations must be reported to NMED within?—
Ans: 48 hours
The MCl for Total Trihalomethanes is?—Ans: 0.1mg/l
SDWA sampling results must be reported to ?—Ans: New Mexico
Enviroment Department (NMED)
Ground water systems must sample for inorganic chemicals
every?—Ans: (3) Three Years
The SDWA Compliance Cycle for Standardized Monitoring Rule
consists of Three?—Ans: Compliance Periods
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?—Ans: 40 or less
then 5% on monthly samples
, 2
For Expert help and assignment solutions, +254707240657
What are the action levels for Lead and Copper?—Ans: 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?—Ans: 5
samples
if a 3-log removal is required for Giardia Lamblia what percentage
of organisms can survive and still meet requirements ?—Ans: 0.1 %
which Primary Inorganic Contaminant poses an immediate health
risk?—Ans: Nitrates
Why do Nitrates poses immediate health risk?—Ans: Pregnant
mothers and infants under 18 months can develop a condition
© 2025 Assignment Expert
known as Blue Baby Syndrome
What is Blue Baby Syndrome?—Ans: The Presence of Nitrates in
the bloodstream that reduces oxygen uptake that gives the skin a
Guru01 - Stuvia
blue tint
Why is Turbidity a Primary Contaminant?—Ans: It shields harmful
bacteria from disinfection processes
What is a Nephelometer?—Ans: Device used to measure NTU's
Turbidity is Measured with?—Ans: Turbidimeter or Nephelometer
How Long must chemical sampling results be kept?—Ans: 10
Years
How long must Bacteriological sampling results be kept?—Ans: 5
years
What is the definitioin of a indicator organism?—Ans:
microorganisms whose presence in water indicates probable
presence of pathogens (disease-causing organisms).
What is Sodium Thiosulphate?—Ans: white powder used to
Neutralize any chlorine that may kill bacteria
Why should you Flush sample line before sampling?—Ans: To
insure the water being sampled is from the main and not the
customers plumbling
