Water Operator Certification Study Material (
New Mexico) 2025-2026 Most Recent Version
Comprehensive 100 Questions and Verified
Answers Accurate Solutions Already Graded A+
Get it 100% Correct
A corporation stop will be locate? - CORRECT ANSWER: Where the service is attached
to the main
A flow meter on a fire line would probably be a? - CORRECT ANSWER: Compound
meter
A public water system is any system that serves a population greater that or equal to ? -
CORRECT ANSWER: 15 services connections or 25 people regulary
Air stripping will help in removal of? - CORRECT ANSWER: taste and odor problems
Anytime the MCL is exceeded and fecal coliform positive results come back from any of
the sample(s)? - CORRECT ANSWER: It is a Non-acute violation
As part of the normal water cycle water is lost,or givenup, to the atmosphere by trees
and by evaporation from the surface of streams,lakes and oceans. This combined loss
is called? - CORRECT ANSWER: Evapotranspiration
At what percentage does unaccounted-for water
become excessive? - CORRECT ANSWER: 10%
, At what tempature does the designed fusible plugs melt? - CORRECT ANSWER: 157
Degrees F
Breakpoint chlorination - CORRECT ANSWER: Results in a free chlorine residual
Chlorine gas flexible feed tubes should be replaced every - CORRECT ANSWER: 6
months
Chlorine Gas is ____ time heavier then air? - CORRECT ANSWER: 2.5 times
Examples of Inorganic contaminants are - CORRECT ANSWER: Lead, Mercury, Nitrate,
Nitrite, Selenium, Arsenic, Radionuclides
Examples of Microbiological contaminants are? - CORRECT ANSWER: Bacteria, Virus,
& Protozoa
Examples of Mineral Contaminants are - CORRECT ANSWER: Iron ,Manganese,
Carbon Dioxide ,Hydro Sulfide
Examples of Organic contaminants ? - CORRECT ANSWER: Pesticides , Herbicides ,
Synthetic Organic Chemicals, Volatile Organic Chemicals
Examples of Radiological Contaminants are? - CORRECT ANSWER: Natural or man
made sources of Radiation
Fire hydrants should never be placed on less than? - CORRECT ANSWER: a 6 inch
water line
for a rapid sand filter run time should not exceed a - CORRECT ANSWER: 100 hour run
time
New Mexico) 2025-2026 Most Recent Version
Comprehensive 100 Questions and Verified
Answers Accurate Solutions Already Graded A+
Get it 100% Correct
A corporation stop will be locate? - CORRECT ANSWER: Where the service is attached
to the main
A flow meter on a fire line would probably be a? - CORRECT ANSWER: Compound
meter
A public water system is any system that serves a population greater that or equal to ? -
CORRECT ANSWER: 15 services connections or 25 people regulary
Air stripping will help in removal of? - CORRECT ANSWER: taste and odor problems
Anytime the MCL is exceeded and fecal coliform positive results come back from any of
the sample(s)? - CORRECT ANSWER: It is a Non-acute violation
As part of the normal water cycle water is lost,or givenup, to the atmosphere by trees
and by evaporation from the surface of streams,lakes and oceans. This combined loss
is called? - CORRECT ANSWER: Evapotranspiration
At what percentage does unaccounted-for water
become excessive? - CORRECT ANSWER: 10%
, At what tempature does the designed fusible plugs melt? - CORRECT ANSWER: 157
Degrees F
Breakpoint chlorination - CORRECT ANSWER: Results in a free chlorine residual
Chlorine gas flexible feed tubes should be replaced every - CORRECT ANSWER: 6
months
Chlorine Gas is ____ time heavier then air? - CORRECT ANSWER: 2.5 times
Examples of Inorganic contaminants are - CORRECT ANSWER: Lead, Mercury, Nitrate,
Nitrite, Selenium, Arsenic, Radionuclides
Examples of Microbiological contaminants are? - CORRECT ANSWER: Bacteria, Virus,
& Protozoa
Examples of Mineral Contaminants are - CORRECT ANSWER: Iron ,Manganese,
Carbon Dioxide ,Hydro Sulfide
Examples of Organic contaminants ? - CORRECT ANSWER: Pesticides , Herbicides ,
Synthetic Organic Chemicals, Volatile Organic Chemicals
Examples of Radiological Contaminants are? - CORRECT ANSWER: Natural or man
made sources of Radiation
Fire hydrants should never be placed on less than? - CORRECT ANSWER: a 6 inch
water line
for a rapid sand filter run time should not exceed a - CORRECT ANSWER: 100 hour run
time
