Table C.1 - Design Daily Wastewater Flow
Wastewater Source
Unit
Gallons Per Day Per Unit
Wastewater Source
Unit
Gallons Per Day Per Unit
Apartment buildings. Multi-family residence
Bedroom
150
Assembly halls (no food preparation)
Person
2
Bars and cocktail lounges with restaurant (in addition to restaurant seating space)
Seating space
9
Bars and cocktail lounges. Low risk food facility
Seating space
9
Beauty salons
Station
140
Bowling centers with or without bar and low risk food facility
Lane
125
Bowling centers with bar and food preparation, medium or high risk food facility
Lane
225
Campground sanitary dump stations
Camp space
20
Campground with central bath and toilet facilities
Space
35
Camp, day use only, no food preparation
Person
10
Camp, day use only, food preparation (cafeteria/kitchen)
Person
25
Camps, day and night toilet and shower facilities and food preparation (cafeteria/kitchen)
Person
50
Churches - no kitchen
Person
3
Churches - with kitchen
Person
6
Dance hall (10 ft per person)
Person
2
Day care facility (no meal preparation)
Child
12
Day care facility (with meal preparation)
Child
16
Dining hall (toilet and kitchen waste without dishwasher)
Meal served
5
Dining hall (toilet and kitchen waste with dishwasher)
Meal served
7
Drive-in restaurants - all paper service
Car space
15
Drive-in restaurants - all paper service, with inside seating
Car space and seating space
15
Drive-in theater (toilet and kitchen/cafeteria)
Vehicle space
3
Employees (day workers)
Employee per shift
15
Gas station and convenience store (low risk food facility)
Patron
Health club, indoor sports facility
Person
5
Health club, indoor sports facility - with showers
Person
15
Hotels or motels and tourist rooming houses
Room
100
Laundromat
Customer
100
Long term care facility
Bed
125
Medical office buildings, clinics and dental offices
   Doctors, nurses, medical staff
Person
75
   Office personnel
Person
15
   Patients
Person
10
Mobile home park community
Site
300
Mobile home (individual)
Bedroom
150
Outdoor sports facilities (toilet waste only)
Person
5
Parks with toilet facilities (75 persons per acre)
Person
5
Restaurant, 24 hour (with dishwasher and/or food waste grinder)
Seating space
44
Restaurant, 24 hour (without dishwasher and/or food waste grinder)
Seating space
40
Restaurant (with dishwasher and/or food waste grinder)
Seating space
22
Restaurant (without dishwasher and/or food waste grinder)
Seating space
20
Retail stores with customer restrooms, dispensaries, vape lounge
Customer
1.5
Schools
Classroom/Student
450/18
Schools with meals served
Classroom/Student
600/24
Schools with meals served and showers provided
Classroom/Student
750/30
Swimming pool bathhouses
Person
10
Outdoor entertainment or celebratory event venue or facility
Person
5
 
Residential Sizing Criteria
 
# of Bedrooms
Total Gallons per Day
2
300
3
450
4
600
5
700
 
Minimum 300 total gallons/day
100 gallons/day for each additional bedroom above 4