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Water Operator Certification Study
Material ( New Mexico) (Advance)
Questions with 100% Correct Answers
Maximum Contaminent Level Correct Answer: MCL
Public water system is a system that serves a population of ___ or more regularly
Correct Answer: 25
Maximum total chlorine residual ___ mg/l Correct Answer: 4
What type of contaminant is Iron Correct Answer: Secondary
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 ___ hours Correct Answer: 48
MCL for Total Trihalomethanes ___ mg/l Correct Answer: 0.1
SDWA sampling results must be reported to Correct Answer: New Mexico
Enviroment Department (NMED)
Ground water systems must sample for inorganic chemicals every ___ years
Correct Answer: 3
The SDWA Compliance Cycle for Standardized Monitoring Rule consists of ___
Compliance Periods Correct Answer: 3
:
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___ 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? Correct Answer: 40
Action level for Lead ___ mg/l Correct Answer: 0.015
If Bacteriological retakes are done this month what is the minimum number of
samples that must be turned in next month? Correct Answer: 5
if a 3-log removal is required for Giardia Lamblia what percentage of organisms
can survive and still meet requirements Correct Answer: 0.1
Primary Inorganic Contaminant poses an immediate health risk Correct Answer:
Nitrates
The Presence of Nitrates in the bloodstream that reduces oxygen uptake that
gives the skin a blue tint Correct Answer: Blue Baby Syndrome
Primary Contaminant that shields harmful bacteria from disinfection processes
Correct Answer: Turbidity
Device used to measure NTU's Correct Answer: Nephelometer
Turbidity is Measured with Correct Answer: Turbidimeter or Nephelometer
Chemical sampling results be kept ___ years Correct Answer: 10
Bacteriological sampling results be kept ___ years Correct Answer: 5
Microorganisms whose presence in water indicates probable presence of
pathogens. Correct Answer: Indicator organism
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White powder used to neutralize chlorine Correct Answer: Sodium Thiosulphate
To insure the water being sampled is from the main and not the customers
plumbling Correct Answer: Flush line
Number is used to determine how many Bac-t samples must be taken Correct
Answer: People served
Minimum number of Bac-T samples required each month? Correct Answer: 1
Anytime the MCL is exceeded and fecal coliform positive results come back
from any of the samples Correct Answer: Non-acute violation
If retakes are required this month what is the minimum number of samples
required next month Correct Answer: 5
Bacteria that are found only in surface water supplies Correct Answer:
Cryptosporidium & Giardia
How soon must NMED be notified that a Bacterial MCL has been exceeded? ___
hours Correct Answer: 24
Coliform group Correct Answer: Indicator organism
Waterborne pathogens found in all water supplies Correct Answer: Typhoid,
Cholera, Dysentery, Hepatitis, Paratyphoid (types A & B)
Disease causing Bacteria Correct Answer: Pathogens
Water Correct Answer: Universal solvent
:
vPretest - Stuvia US
Water Operator Certification Study
Material ( New Mexico) (Advance)
Questions with 100% Correct Answers
Maximum Contaminent Level Correct Answer: MCL
Public water system is a system that serves a population of ___ or more regularly
Correct Answer: 25
Maximum total chlorine residual ___ mg/l Correct Answer: 4
What type of contaminant is Iron Correct Answer: Secondary
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 ___ hours Correct Answer: 48
MCL for Total Trihalomethanes ___ mg/l Correct Answer: 0.1
SDWA sampling results must be reported to Correct Answer: New Mexico
Enviroment Department (NMED)
Ground water systems must sample for inorganic chemicals every ___ years
Correct Answer: 3
The SDWA Compliance Cycle for Standardized Monitoring Rule consists of ___
Compliance Periods Correct Answer: 3
:
vPretest - Stuvia US
,2
___ 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? Correct Answer: 40
Action level for Lead ___ mg/l Correct Answer: 0.015
If Bacteriological retakes are done this month what is the minimum number of
samples that must be turned in next month? Correct Answer: 5
if a 3-log removal is required for Giardia Lamblia what percentage of organisms
can survive and still meet requirements Correct Answer: 0.1
Primary Inorganic Contaminant poses an immediate health risk Correct Answer:
Nitrates
The Presence of Nitrates in the bloodstream that reduces oxygen uptake that
gives the skin a blue tint Correct Answer: Blue Baby Syndrome
Primary Contaminant that shields harmful bacteria from disinfection processes
Correct Answer: Turbidity
Device used to measure NTU's Correct Answer: Nephelometer
Turbidity is Measured with Correct Answer: Turbidimeter or Nephelometer
Chemical sampling results be kept ___ years Correct Answer: 10
Bacteriological sampling results be kept ___ years Correct Answer: 5
Microorganisms whose presence in water indicates probable presence of
pathogens. Correct Answer: Indicator organism
:
vPretest - Stuvia US
, 3
White powder used to neutralize chlorine Correct Answer: Sodium Thiosulphate
To insure the water being sampled is from the main and not the customers
plumbling Correct Answer: Flush line
Number is used to determine how many Bac-t samples must be taken Correct
Answer: People served
Minimum number of Bac-T samples required each month? Correct Answer: 1
Anytime the MCL is exceeded and fecal coliform positive results come back
from any of the samples Correct Answer: Non-acute violation
If retakes are required this month what is the minimum number of samples
required next month Correct Answer: 5
Bacteria that are found only in surface water supplies Correct Answer:
Cryptosporidium & Giardia
How soon must NMED be notified that a Bacterial MCL has been exceeded? ___
hours Correct Answer: 24
Coliform group Correct Answer: Indicator organism
Waterborne pathogens found in all water supplies Correct Answer: Typhoid,
Cholera, Dysentery, Hepatitis, Paratyphoid (types A & B)
Disease causing Bacteria Correct Answer: Pathogens
Water Correct Answer: Universal solvent
:
vPretest - Stuvia US
