Ariz. Admin. Code § tit. 18, ch. 9, art. 3, pt. E, tbl. 1

Current through Register Vol. 31, No. 2, January 10, 2025

Table 1 - [Effective 6/19/2023] 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

Note: Unit flow rates published in standard texts, literature sources, or relevant area or regional studies are considered by the Department, if appropriate to the project.

Ariz. Admin. Code tit. 18, ch. 9, art. 3, pt. E, tbl. 1

New Section adopted by final rulemaking at 7 A.A.R. 235, effective January 1, 2001 (Supp. 00-4). Amended by final rulemaking at 11 A.A.R. 4544, effective November 12, 2005 (05-3). Amended by final rulemaking at 29 A.A.R. 1023, effective 6/19/2023.