WELL AP - WATER CONCEPT QUESTIONS &
ANSWERS
What is the water intake recommended guideline? - Answers :Depending on age, sex
and pregnancy status, guidelines for water intake (including water in foods as well as
direct consumption) recommend values between 49-125 oz daily water consumption by
adults
What is turbidity a measure of? - Answers :water cloudiness, which relates to the
availability of food and shelter for microbes, the presence of particulate contaminants
and issues with the water treatment process, along with posing an aesthetic concern.
High turbidity water also can reduce the efficacy of water treatment technologies.
What is the method of reducing turbidity? - Answers :Water filtration
W02 Drinking water quality - meet chemical thresholds - what is the threshold for
arsenic and lead? - Answers :≤ 0.01 mg/L each
W02 Drinking water quality - meet chemical thresholds - what is the threshold for
cadmium? - Answers :≤ 0.003 mg/L
W02 Drinking water quality - meet chemical thresholds - what is the threshold for
chromium? - Answers :≤ 0.05 mg/L.
W02 Drinking water quality - meet chemical thresholds - what is the threshold for
copper? W04 Meet thresholds for drinking water test - what is the threshold for copper?
- Answers :≤ 2 mg/L & ≤ 1 mg/L
W02 Drinking water quality - meet chemical thresholds - what is the threshold for
fluoride? - Answers :≤ 1.5 mg/L
W02 Drinking water quality - meet chemical thresholds - what is the threshold for
mercury? - Answers :≤ 0.006 mg/L.
W02 Drinking water quality - meet chemical thresholds - what is the threshold for
nickel? - Answers :≤ 0.07 mg/L
W02 Drinking water quality - meet chemical thresholds - what is the threshold for
nitrate? - Answers :≤ 50 mg/L as Nitrate (11 mg/L as Nitrogen)
W02 Drinking water quality - meet chemical thresholds - what is the threshold for nitrite?
- Answers :≤ 3 mg/L as Nitrite (0.9 mg/L as Nitrogen).
, W02 Drinking water quality - meet chemical thresholds - what is the threshold for total
chlorine? - Answers :≤ 5 mg/L.
W02 Drinking water quality - meet chemical thresholds - what are the water dispenser
water requirements for residual (free) chlorine? - Answers :Does not exceed 4 mg/L
If the water has low turbidity, what method should be used to disinfect the water of any
coliforms and pathogenic microbes? - Answers :UV light
W01 - Water quality indicators - what is the turbidity threshold? - Answers :less than or
equal to 1.0 NTU, FTU or FNU
W01 - Water quality indicators - what is the coliforms threshold? - Answers :not
detected in any 100ml sample
What are the typical technologies to treat water to get rid of contaminants? - Answers
:activated carbon filters, ion exchange resins and reverse osmosis (RO) systems
W02 Drinking water quality - meet chemical thresholds - how many water dispensers
are required for residential projects? - Answers :at least one drinking water dispenser,
plus one drinking water dispenser per dwelling unit
W02 Drinking water quality - meet chemical thresholds - what are the water dispenser
water requirements for the concentration of total trihalomethanes? - Answers :0.08 mg/L
or less
W02.1 Drinking water quality - meet chemical thresholds - what are the water dispenser
water requirements for the concentration of haloacetic acids? - Answers :0.06 mg/L or
less
Water quality - where should the tests sample water from? - Answers :water from the
cold-water fixture, when possible. If conditions exist preventing adjustment of the water
temperature, perform the testing at the temperature of the water provided and make
note of conditions.
Water quality - core projects - where should the tests sample water from? - Answers
:from points that deliver water of the same quality as what is available to tenant spaces.
Samples may be taken after point-of-use treatment devices only if the project has
documented policies giving allowances to tenants to acquire and install such units.
Water quality - core projects - when can samples be taken after point-of-use treatment
devices? - Answers :Only if the project has documented policies giving allowances to
tenants to acquire and install such units
Water quality - what is the test method? - Answers :Run the water for at least 30
seconds before gathering a water sample
ANSWERS
What is the water intake recommended guideline? - Answers :Depending on age, sex
and pregnancy status, guidelines for water intake (including water in foods as well as
direct consumption) recommend values between 49-125 oz daily water consumption by
adults
What is turbidity a measure of? - Answers :water cloudiness, which relates to the
availability of food and shelter for microbes, the presence of particulate contaminants
and issues with the water treatment process, along with posing an aesthetic concern.
High turbidity water also can reduce the efficacy of water treatment technologies.
What is the method of reducing turbidity? - Answers :Water filtration
W02 Drinking water quality - meet chemical thresholds - what is the threshold for
arsenic and lead? - Answers :≤ 0.01 mg/L each
W02 Drinking water quality - meet chemical thresholds - what is the threshold for
cadmium? - Answers :≤ 0.003 mg/L
W02 Drinking water quality - meet chemical thresholds - what is the threshold for
chromium? - Answers :≤ 0.05 mg/L.
W02 Drinking water quality - meet chemical thresholds - what is the threshold for
copper? W04 Meet thresholds for drinking water test - what is the threshold for copper?
- Answers :≤ 2 mg/L & ≤ 1 mg/L
W02 Drinking water quality - meet chemical thresholds - what is the threshold for
fluoride? - Answers :≤ 1.5 mg/L
W02 Drinking water quality - meet chemical thresholds - what is the threshold for
mercury? - Answers :≤ 0.006 mg/L.
W02 Drinking water quality - meet chemical thresholds - what is the threshold for
nickel? - Answers :≤ 0.07 mg/L
W02 Drinking water quality - meet chemical thresholds - what is the threshold for
nitrate? - Answers :≤ 50 mg/L as Nitrate (11 mg/L as Nitrogen)
W02 Drinking water quality - meet chemical thresholds - what is the threshold for nitrite?
- Answers :≤ 3 mg/L as Nitrite (0.9 mg/L as Nitrogen).
, W02 Drinking water quality - meet chemical thresholds - what is the threshold for total
chlorine? - Answers :≤ 5 mg/L.
W02 Drinking water quality - meet chemical thresholds - what are the water dispenser
water requirements for residual (free) chlorine? - Answers :Does not exceed 4 mg/L
If the water has low turbidity, what method should be used to disinfect the water of any
coliforms and pathogenic microbes? - Answers :UV light
W01 - Water quality indicators - what is the turbidity threshold? - Answers :less than or
equal to 1.0 NTU, FTU or FNU
W01 - Water quality indicators - what is the coliforms threshold? - Answers :not
detected in any 100ml sample
What are the typical technologies to treat water to get rid of contaminants? - Answers
:activated carbon filters, ion exchange resins and reverse osmosis (RO) systems
W02 Drinking water quality - meet chemical thresholds - how many water dispensers
are required for residential projects? - Answers :at least one drinking water dispenser,
plus one drinking water dispenser per dwelling unit
W02 Drinking water quality - meet chemical thresholds - what are the water dispenser
water requirements for the concentration of total trihalomethanes? - Answers :0.08 mg/L
or less
W02.1 Drinking water quality - meet chemical thresholds - what are the water dispenser
water requirements for the concentration of haloacetic acids? - Answers :0.06 mg/L or
less
Water quality - where should the tests sample water from? - Answers :water from the
cold-water fixture, when possible. If conditions exist preventing adjustment of the water
temperature, perform the testing at the temperature of the water provided and make
note of conditions.
Water quality - core projects - where should the tests sample water from? - Answers
:from points that deliver water of the same quality as what is available to tenant spaces.
Samples may be taken after point-of-use treatment devices only if the project has
documented policies giving allowances to tenants to acquire and install such units.
Water quality - core projects - when can samples be taken after point-of-use treatment
devices? - Answers :Only if the project has documented policies giving allowances to
tenants to acquire and install such units
Water quality - what is the test method? - Answers :Run the water for at least 30
seconds before gathering a water sample
