WASTE WATER GRADE 1 NEWEST 2025 ACTUAL EXAM COMPLETE 100 QUESTIONS AND CORRECT
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.
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) 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
, WASTE WATER GRADE 1 NEWEST 2025 ACTUAL EXAM COMPLETE 100 QUESTIONS AND CORRECT
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.
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
6. Grease and Oils
7. Sulfide tests ( Hydrogen sulfide)
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.
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) 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
, WASTE WATER GRADE 1 NEWEST 2025 ACTUAL EXAM COMPLETE 100 QUESTIONS AND CORRECT
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.
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
6. Grease and Oils
7. Sulfide tests ( Hydrogen sulfide)
