1|Page
WASTE WATER GRADE 1 EXAM LATEST WITH
ACTUAL QUESTIONS AND CORRECT VERIFIED
ANSWERS ALREADY GRADED A+ 100%
GUARANTEED PASS!
Where does domestic water come from ? - ....ANSWER
....✔✔ Water that comes from homes, schools,
hospitals, businesses, restaurants, and offices.
How much waste water does one person on average
generate ? - ....ANSWER ....✔✔ 100 gallons of waste
water per day.
On average how much does one person contribute lb
BOD/d? - ....ANSWER ....✔✔ 0.17 lb BOD/d
Where does industrial water come from? - ....ANSWER
....✔✔ From industries such as dairy farms, meat
packing, food processing etc.
What is a compatible industry ? - ....ANSWER ....✔✔
Dairy farms, meat packing, food processing etc.
,2|Page
What is incompatible industrial industry? - ....ANSWER
....✔✔ Industries that waste heavy metals, copper,
lead, zinc, chromium, nickel, cadmium, cyanide,
pesticides, herbicides, and other toxic compounds.
What is 40 CFR part 403? - ....ANSWER ....✔✔
Makes it illegal for any industry to discharge
incompatible waste to publicly owned wastewater
treatment plant.
Sanitary water is what ? - ....ANSWER ....✔✔
Sanitary water is combined of domestic and industrial
waste water from the community.
Storm water come from where ? - ....ANSWER ....✔✔
Water that runs from roads, parking lots, and other
impervious surfaces during rain or snowstorms.
What two cities in California separate storm water and
sewer water ? - ....ANSWER ....✔✔ SF and
Sacramento
Sanitary sewers have what type of waste water ?
Where does this waste water go? - ....ANSWER
,3|Page
....✔✔ Domestic and industrial wastewater and it's
generated to a wastewater treatment plant.
Storm sewers have what type of water and where is it
generated to ? - ....ANSWER ....✔✔ Typically carry
water from storm drains and discharge to streams,
rivers, and oceans
What are combined sewers ? - ....ANSWER ....✔✔
Contain waste water that is combined of sanitary and
storm water.
What's I and I or I/I stand for ? - ....ANSWER ....✔✔
Infiltration and Inflow
What does I and I or I/I refer too ? - ....ANSWER
....✔✔ Relatively clean water that unintentionally
makes its way into sanity sewers.
What does infiltration mean? - ....ANSWER ....✔✔
Ground water that seeps, trickles, and flows into sewer
pipes or manholes through holes cracks, joint failures and
faulty connections from surround soil. Usually during
rainfall.
, 4|Page
Inflow means what ? - ....ANSWER ....✔✔ Is storm
water that rapidly flows into sanitary sewer systems
from above ground either intentionally or
unintentionally.
What are examples of intentional inflow ? - ....ANSWER
....✔✔ Through illegal roofs, basement drains, and
storm drains cross connections.
What are examples of unintentionally inflow ? -
....ANSWER ....✔✔ Through holes in manhole covers,
or improperly seated manhole covers.
What's a grab sample ? - ....ANSWER ....✔✔ A one
time sample collected at a single point in time.
What are the 7 analyses that can only be done on grab
samples ? - ....ANSWER ....✔✔ 1. Chlorine Residual
2. Settleable Solids (test performed in an Imhoff cone)
3. Coliform Test and fecal ("bac-tee" or bacteriological
tests)
4. Dissolved Oxygen (DO)
5. pH
WASTE WATER GRADE 1 EXAM LATEST WITH
ACTUAL QUESTIONS AND CORRECT VERIFIED
ANSWERS ALREADY GRADED A+ 100%
GUARANTEED PASS!
Where does domestic water come from ? - ....ANSWER
....✔✔ Water that comes from homes, schools,
hospitals, businesses, restaurants, and offices.
How much waste water does one person on average
generate ? - ....ANSWER ....✔✔ 100 gallons of waste
water per day.
On average how much does one person contribute lb
BOD/d? - ....ANSWER ....✔✔ 0.17 lb BOD/d
Where does industrial water come from? - ....ANSWER
....✔✔ From industries such as dairy farms, meat
packing, food processing etc.
What is a compatible industry ? - ....ANSWER ....✔✔
Dairy farms, meat packing, food processing etc.
,2|Page
What is incompatible industrial industry? - ....ANSWER
....✔✔ Industries that waste heavy metals, copper,
lead, zinc, chromium, nickel, cadmium, cyanide,
pesticides, herbicides, and other toxic compounds.
What is 40 CFR part 403? - ....ANSWER ....✔✔
Makes it illegal for any industry to discharge
incompatible waste to publicly owned wastewater
treatment plant.
Sanitary water is what ? - ....ANSWER ....✔✔
Sanitary water is combined of domestic and industrial
waste water from the community.
Storm water come from where ? - ....ANSWER ....✔✔
Water that runs from roads, parking lots, and other
impervious surfaces during rain or snowstorms.
What two cities in California separate storm water and
sewer water ? - ....ANSWER ....✔✔ SF and
Sacramento
Sanitary sewers have what type of waste water ?
Where does this waste water go? - ....ANSWER
,3|Page
....✔✔ Domestic and industrial wastewater and it's
generated to a wastewater treatment plant.
Storm sewers have what type of water and where is it
generated to ? - ....ANSWER ....✔✔ Typically carry
water from storm drains and discharge to streams,
rivers, and oceans
What are combined sewers ? - ....ANSWER ....✔✔
Contain waste water that is combined of sanitary and
storm water.
What's I and I or I/I stand for ? - ....ANSWER ....✔✔
Infiltration and Inflow
What does I and I or I/I refer too ? - ....ANSWER
....✔✔ Relatively clean water that unintentionally
makes its way into sanity sewers.
What does infiltration mean? - ....ANSWER ....✔✔
Ground water that seeps, trickles, and flows into sewer
pipes or manholes through holes cracks, joint failures and
faulty connections from surround soil. Usually during
rainfall.
, 4|Page
Inflow means what ? - ....ANSWER ....✔✔ Is storm
water that rapidly flows into sanitary sewer systems
from above ground either intentionally or
unintentionally.
What are examples of intentional inflow ? - ....ANSWER
....✔✔ Through illegal roofs, basement drains, and
storm drains cross connections.
What are examples of unintentionally inflow ? -
....ANSWER ....✔✔ Through holes in manhole covers,
or improperly seated manhole covers.
What's a grab sample ? - ....ANSWER ....✔✔ A one
time sample collected at a single point in time.
What are the 7 analyses that can only be done on grab
samples ? - ....ANSWER ....✔✔ 1. Chlorine Residual
2. Settleable Solids (test performed in an Imhoff cone)
3. Coliform Test and fecal ("bac-tee" or bacteriological
tests)
4. Dissolved Oxygen (DO)
5. pH
