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Unit Daily Design Flows. Source: Arizona Administrative Code, R18-9.
Type of Facility Served
Applicable Unit
Sewage Design Flow per Applicable Unit,
(gallons per day)
Airport Passenger (average daily number)
Employee
4
15
Apartment Building
  1 bedroom
  2 bedroom
  3 bedroom
  4 bedroom
Resident (if max. number fixed)
Apartment
Apartment
Apartment
Apartment
100
200
300
400
500
Auto Wash Facility
per manufacturer, if consistent with this Chapter
Bar/Lounge Seat
30
Barber Shop Chair
35
Beauty Parlor Chair
100
Bowling Alley (snack bar only) Lane
75
Camp
  Day camp, no cooking facilities
  Campground, overnight, flush toilets
  Campground, overnight, flush toilets, shower
  Campground, luxury
  Camp, youth, summer, or seasonal

Camping unit
Camping unit
Camping unit
Person
Person

30
75
150
100-150
50
Church
  without kitchen
  with kitchen

Person (maximum attendance)
Person (maximum attendance)

5
7
Country Club Resident member
Nonresident member
100
10
Dance Hall Patron
5
Dental Office Chair
500
Dog Kennel Animal, maximum occupancy
15
Hospital
  All flows
  Kitchen waste only
  Laundry waste only

Bed
Bed
Bed

250
25
40
Hotel/Motel
  without kitchen
  with kitchen

Bed (2 person)
Bed (2 person)

50
60
Industrial Facility
  without showers
  with showers
  Cafeteria, add

Employee
Employee
Employee

25
35
5
Institutions
  Resident
  Nursing hoome
  Rest home

Person
Person
Person

75
125
125
Laundry
  Self Service
  Commercial

Wash cycle
Washing machine

50
per manufacturer, if consistent with this Chapter
Office Building Employee
20
Park
  Picnic, flush toilets, showers
  Picnic, flush toilets only
  Recreational vehicle, no water or sewer connections
  Recreational vehicle, with water and sewer connections
  Mobile home/trailer

Parking space
Parking space
Vehicle space
Vehicle space
Space

40
20
75
100
250
Residence
  Dwelling, per person (for sewer collection system design only)
  Dwelling, single family
  Dwelling, per bedroom if count available
  Dwelling, per fixture if count available
  Mobile home, family*
  Mobile home, adults only*
  Season and summer

Person
Dwelling (3 bedrooms assumed)
Bedroom
Fixture unit
Home lot
Home lot
Resident

100
450
150
25
250
150
100
Restaurant/Cafeteria
  with toilet, add
  Kitchen waste, add
  Garbage disposal, add
  Cocktail lounge, add
  Kitchen waste disposal service, add
Employee
Customer
Meal
Meal
Customer
Meal
20
7
6
1
2
2
Restroom, public Toilet
200
School
  Staff and office
  Elementary, add
  Middle and High, add
    with gym & showers, add
    with cafeteria, add
  Boarding, total flow

Person
Student
Student
Student
Student
Person

20
15
20
5
3
100
Service Station, with toilets First bay
Each additional bay
1000
500
Shopping Center, no food or laundry Square foot of retail space
0.1
Store
  with public restroom, add
Employee
Square foot of retail space
20
0.1
Swimming Pool, public Person
10
Theater
  Indoor
  rive-in

Seat
Car space

5
10

* Note rule clarifications #10