020-25 Wyo. Code R. § 25-5

Current through April 27, 2019

Section 25-5 - Design Flows

The volume of wastewater shall be determined by one of the following:

(a) Tables 1 and 2 provided in this section.

(b) Metered water supply data from the facility.

(c) Metered water supply data from another facility where similar water demands have been demonstrated.

Table 1. Residential Design Flow Rates per Bedroom (gallons per day, gpd)¹

¹An unfinished basement is considered two (2) additional bedrooms.

²The design flow shall be increased by eighty (80) gpd for each additional bedroom over six (6).

Table 2. Non-Residential Wastewater Design Flow Rates¹

Facility	Unit	Flow (gallons/unit/day)
Airports	person	4
Apartment	bedroom	120
Automobile Service Station	vehicle served	10
Bars	seat	20
Bathhouses and swimming pools	person	10
Campgrounds (w/ toilets only)	person	25
Campgrounds (w/shower facility)	person	45
Church	person	4
Country Club	member	25
Day School, Office Building, Retail Store, Warehouse (no showers)	person	15
Hospital	bed	250
Industrial Building (sanitary waste only)	employee	20
Laundry (self-service)	machine	450
Mobile Home	bedroom	see table 1
Motel, Hotel, Resort	bedroom	140
Recreational Vehicle	each	100
Rest Home, Care Facility, Boarding School	bed	100
Restaurant	meal	10
Restaurant ( kitchen waste only)	meal	6
Theater	seat	3

¹Values shown in the above table are the typical flow rates from Wastewater Engineering Treatment and Reuse, Metcalf and Eddy, 2003.

020-25 Wyo. Code R. § 25-5

Amended, Eff. 7/27/2016.

Amended, Eff. 6/29/2018.