§ 53.074  MINIMUM CAPACITIES FOR SEPTIC TANKS SERVING AN INDIVIDUAL DWELLING.
 
Number of bedrooms
Maximum number of persons served
Liquid cap. of tank (no auto wash. mach., no garb. grinder)
Liquid cap. of tank (with auto wash. mach. only)
Liquid cap. of tank (with garbage grinder only)
Liquid cap. of tank (with both auto wash. mach. and garb. grinder)
2
4
750
938
1125
1313
3
6
900
1125
1350
1575
4
8
1200
1500
1800
2100
5
10
1500
1875
2250
2625
6
12
1800
2250
2700
3150
7
15
2250
2813
3375
3938
Note: The minimum allowable liquid depth shall be four feet. Tanks in excess of 1,200 gallons capacity shall be designed on the basis of one and one-half times the daily flow of 100 gallons, per person per day up to 1,500 gallons per day. Flows greater than 1,500 gallons per day, the minimum effective tank capacity should equal 1,500 gallons, plus 75% of daily sewage flow. This formula V=1500 + .75Q may be used. V=volume and Q=daily sewage flow in gallons.
 
(1975 Code, § 38.35)