Administrative Code

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Virginia Administrative Code
Title 12. Health
Agency 5. Department of Health
Chapter 610. Sewage Handling and Disposal Regulations
7/15/2020

12VAC5-610-670. Sewage Flows.

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.

Statutory Authority

§§ 32.1-12 and 32.1-164 of the Code of Virginia.

Historical Notes

Derived from VR355-34-02 § 4.2, eff. February 5, 1986; amended, eff. May 11, 1988; Volume 16, Issue 16, eff. July 1, 2000.

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