Applications
AutomotiveFlow Rate Guideline
Design Flow
Information on flow rate is necessary for the design of an effective wastewater treatment and disposal system. The wastewater flow rates of existing facilities can often be measured. The below table can be used as a basis for the dsign of sewage treatment and disposal facilities for new developments, and for existing establishments when the hydraulic loading cannot be measured. Alternatively, water-usage data can be used to estimate wastewater flow, if it is available for an establishment. Adjustments should be made for infiltration, and for water that willl not reach the sewer (e.g. boiler water).| Type of Facility | Flow Rate Per Person (gal./day) | Flow Rate Per Unit (gal./day) |
| Airports | ||
| (Per Passenger) | 3 | |
| (Per Employee) | 15 | |
| Apartments | 75 |
|
| 1 Bedroom | 150 | |
| 2 Bedroom | 300 | |
| 3 Bedroom | 400 | |
| Bathhouse | ||
| (Per Swimmer) | 10 | |
| Boarding House | 75 | |
| Bowling Alley | ||
| (Per Lane - No Food) | 75 | |
| (With Food - Add Food Service Value) | ||
| Campgrounds (Recreational Vehicle - Per Site) | ||
| Sewered Sites | 100 | |
| Central Facilities | ||
| Served Sites, 300' Radius | ||
| Peripheral Sites, 500' Radius | 100 | |
| Subractions From Above | 75 | |
| No Showers | 25 | |
| Dual Service (Central Facilities and Sewered Facilities Overlapping the Central)) | 25 | |
| Campground (Summer Camp) | ||
| Central Facilities | 50 | |
| Separate Facilities | ||
| Toilet | 10 | |
| Shower | 25 | |
| Kitchen | 10 | |
| Campground Dumping Stations | ||
| (Per Unsewered Site) | 10 | |
| (Per Sewered Site) | 5 | |
| Camps, Day | 13 | |
| Add for Lunch | 3 | |
| Add for Showers | 5 | |
| Carwashes, Assuming No Recycle | ||
| Tunnel, Per Car | 80 | |
| Rollover, Per Car | 40 | |
| Handwash, Per 5 Minute Cycle | 20 | |
| Churches - Per Seat | 3 | |
| (With Catering, Add Food Service Value) | ||
| Clubs | ||
| Country | ||
| Per Resident Member | 75 | |
| Per Non-Resident Member | 25 | |
| Racquet (Per Court Per Hour) | 80 | |
| Factories | ||
| Per Person/Shift | 25 | |
| Add for Showers | 10 | |
| Food Service Operations (Per Seat) | ||
| Ordinary Restaurant | 35 | |
| 24 - Hour Restaurant | 50 | |
| Restaurant Along Freeway | 70 | |
| Tavern (Little Food Service) | 20 | |
| Curb Service (Drive-In, Per Car Space) | 50 | |
| Catering, or Banquet Facilities | 20 | |
| Hair Dresser (Per Station) | 170 | |
| Hospitals (Per Bed) | 175 | |
| Hotels (Per Room) Add for Banquet Facilities, Theatre, Night Club, as Applicable |
120 | |
| Homes | ||
| One Bedroom | 150 | |
| Two Bedroom | 300 | |
| Three Bedroom | 400 | |
| Four Bedroom | 475 | |
| Five Bedroom | 550 | |
| Institutions | ||
| (Other than Hospitals) | 125 | |
| Laundromats (Per Machine) | 580 | |
| Mobile Home Parks | ||
| Less Than Five Units: Use Flow Design for Homes | ||
| Twenty or More Units: Per Trailer | ||
| Double Wide | 200 | |
| Five to Twenty Units - Use Prorated Scale | 300 | |
| Mobile Home Parks | ||
| Per Mobile Home Space (without service building) | 150 | |
| Per Mobile Home Space (with service building) | 175 | |
| Motels | ||
| Per Living Unit | 100 | |
| With Kitchen | 150 | |
| Office Buildings | ||
| Per Employee | 15 | |
| Per Square Foot | 0.1 | |
| Dentist - Per Chair/Day | 750 | |
| Parks (Per Picnicker) | ||
| Restroom Only | 5 | |
| Showers and Restroom | 10 | |
| Schools (Per Student) | ||
| Boarding | 75 | |
| Day | 10 | |
| Cafeteria - Add | 5 | |
| Showers - Add | 5 | |
| Service Station | ||
| Per Toilet (Not Including Car Wash) | 400 | |
| Swimming Pools (Per Swimmer) | 10 | |
| Sports Stadium | 5 | |
| Theatre | ||
| Drive-In (Per Space) | ||
| Movie (Per Seat) | ||
| Dinner Theatre, Individual (Per Seat) | 20 | |
| With Hotel | 10 | |
