GroundRules
12VAC5-610-670: Sewage flows
Where this section sits in the code
- Title 12. Health
- Agency 5. Department of Health
- Chapter 610. Sewage Handling and Disposal Regulations
- Part V. Design and Construction Criteria
- Article 1. General Requirements
Subsurface soil absorption systems shall be designed on the basis of the sewage flows tabulated in Table 5.1.
Table 5.1.
Sewage Flows.
Discharge Facility
Design Unit
Flow
(gpd)
BOD
(#/day)
S.S.
(#/day)
Flow
Duration
(Hour)
Dwelling1
per person total
75
0.2
0.2
24
Food preparation
--
15
--
--
--
Toilet facilities
--
20
--
--
--
Bathing facilities
--
20
--
--
--
Handwashing facilities
--
5
--
--
--
Laundering
--
15
--
--
--
Schools with shower and cafeteria
per person
16
0.04
0.04
8
Schools without showers and with or without cafeteria
per person
10
0.025
0.025
8
Boarding schools
per person
75
0.2
0.2
16
Motels at 65 gals/ person (rooms only)
per person
130
0.26
0.26
24
Trailer courts
per person
75
0.2
0.2
24
Restaurants
per seat
50
0.2
0.2
16
Interstate or through highway restaurants
per seat
100-180
0.7
0.7
16
Interstate rest areas
per person
5
0.01
0.01
24
Service stations
per vehicle served
10
0.01
0.01
16
Factories & office buildings
per person per 8-hr shift
15-35
0.03-0.07
0.03-0.07
operating period
Shopping centers
per 1,000 ft. of ultimate floor space
200-300
0.1
0.1
12
Hospitals
per bed
300
0.6
0.6
24
Nursing homes
per bed
200
0.3
0.3
24
Homes for the aged
per bed
100
0.2
0.2
24
Doctor's office in medical center
per 1,000 sq. ft.
500
0.1
0.1
12
Laundromats, 9 to 12# machines
per machine
500
0.3
0.03
16
Community colleges
per student and faculty
15
0.03
0.03
12
Swimming pools
per swimmer
10
0.001
0.001
12
Theaters, drive-in type
per car
5
0.01
0.01
4
Theaters, auditorium type
per seat
5
0.01
0.01
12
Picnic areas
per person
5
0.01
0.01
12
Camps, resort day and night with limited plumbing
per campsite
50
0.05
0.05
24
Luxury camps with flush toilets
per campsite
100
0.1
0.1
24
Dump station
per campsite
50
0.05
0.05
24
1 For all dwelling units the design shall be based on two persons per bedroom.
Collected 2026-09-14T04:50:45Z. Source file · JSON