Arizona Administrative Code
Title 18 - ENVIRONMENTAL QUALITY
Chapter 9 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER POLLUTION CONTROL
Article 3 - AQUIFER PROTECTION PERMITS - GENERAL PERMITS
Part E - TYPE 4 GENERAL PERMITS
Table 1 - Unit Design Flows

Wastewater Source

(Add together all wastewater source line items applicable to the facility per applicable unit.)

Applicable Unit

Sewage Design Flow per Applicable Unit, Gallons Per Day

Airport

For each passenger (average daily number), add

For each employee, add

Passenger (average daily number)

4

Employee

15

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 and 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

Dwelling

For determining design flow for sewage treatment facilities under R18-9-B202(A)(9)(a) and sewage collection systems under R18-9-E301(D) and R18-9-B301(K), excluding peaking factor.

Person

80

Dwelling

For on-site wastewater treatment facilities per R18-9-E302 through R18-9-E323:

Apartment Building

1 bedroom

Apartment

200

2 bedroom

Apartment

300

3 bedroom

Apartment

400

4 bedroom

Apartment

500

Seasonal or Summer Dwelling (with recorded seasonal occupancy restriction)

Resident

100

Single Family Dwellings (for both conventional and alternative systems)

see R18-9-A314(4)(a)

see R18-9-A314(4)(a)

Other than Single Family Dwelling, the greater flow value based on:

Bedroom count

300

1-2 bedrooms

Bedroom

150

Each bedroom over 2

Bedroom

25

Fixture count

Fixture unit

Fire Station

Employee

45

Hospital

All flows

Bed

250

Kitchen waste only

Bed

25

Laundry waste only

Bed

40

Hotel/motel (assuming outsourced linen laundry service)

Without kitchen

Bed (2 person)

50

With kitchen

Bed (2 person)

60

Industrial facility

Without showers

Employee

25

With showers

Employee

35

Cafeteria, add

Employee

5

Institutions

Resident

Person

75

Nursing home

Person

125

Rest home

Person

125

Laundry

Self service

Wash cycle

50

Commercial

Washing machine

Per manufacturer, if consistent with this Chapter

Office Building

Employee

20

Park (temporary use)

Picnic, with showers, flush toilets

Parking space

40

Picnic, with flush toilets only

Parking space

20

Recreational vehicle, no water or sewer connections

Vehicle space

Vehicle space

75 100

Recreational vehicle, with water and sewer connections

Space

250

Mobile home/Trailer

Restaurant/Cafeteria

For each employee, add

With toilet, add

Kitchen waste - full plated service, add

Kitchen waste - disposable service, add

Garbage disposal, add

Cocktail lounge, add

Employee

Customer

Meal

Meal

Meal

Customer

20

7

6

2

1

2

Restroom, public

Toilet

200

School

Staff and office

Person

20

Elementary, add

Student

15

Middle and High, add

Student

20

with gym & showers, add

Student

5

with cafeteria, add

Student

3

Boarding, total flow

Person

100

Service Station with toilets

First bay

1000

Each additional bay

500

Shopping Center, no food or laundry

Square foot of retail space

0.1

Store

For each employee, add

Employee

20

Public restroom, add

Square foot of retail space

0.1

Swimming Pool, Public

Person

10

Theater

Indoor

Seat

5

Drive-in

Car space

10