Water Operator Certification Study Material ( New
Mexico) GUARANTEED PASS!!
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
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
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
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, 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
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
indicates probable presence of pathogens (disease-causing organisms).
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Mexico) GUARANTEED PASS!!
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
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
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
Page 1 of 10
, 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
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
indicates probable presence of pathogens (disease-causing organisms).
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