Water Operator Certification Study
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
___ 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
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
Ground & Surface - (correct Answer) - Two sources of water
Water that is safe to drink - (correct Answer) - Potable
Natural water cycle - (correct Answer) - Hydrologic Cycle
Water that is lost or given up to the atmosphere by plants or the surface of streams, lakes and oceans. -
(correct Answer) - Evapotranspiration
Destruction of Pathogens - (correct Answer) - Disinfection
May be used for the removal of Iron & Manganese, some kinds of Taste & Odors, and some dissolved
gases, such as Ammonia and Hydrogen Sulfide - (correct Answer) - Chlorine
Byprouducts of drinking water chlorination. these byprouducts form when chlorine reacts with dissolved
natural organic matter, moslty plant life - (correct Answer) - Trihalomethanes
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
___ 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
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
Ground & Surface - (correct Answer) - Two sources of water
Water that is safe to drink - (correct Answer) - Potable
Natural water cycle - (correct Answer) - Hydrologic Cycle
Water that is lost or given up to the atmosphere by plants or the surface of streams, lakes and oceans. -
(correct Answer) - Evapotranspiration
Destruction of Pathogens - (correct Answer) - Disinfection
May be used for the removal of Iron & Manganese, some kinds of Taste & Odors, and some dissolved
gases, such as Ammonia and Hydrogen Sulfide - (correct Answer) - Chlorine
Byprouducts of drinking water chlorination. these byprouducts form when chlorine reacts with dissolved
natural organic matter, moslty plant life - (correct Answer) - Trihalomethanes
