15 Miss. Code. R. 15-77-1-5.1.9
Current through January 14, 2025
The effective liquid capacity of septic tanks for dwellings shall be based on the number of bedrooms proposed or anticipated as shown in the table below:
| Number of Bedrooms | Number of Occupants | Minimum Effective Liquid Capacity (gallons) without baffle or effluent filter | Minimum Effective Liquid Capacity (gallons) with baffle or effluent filter |
| 2 or less | 4 or less | 750 | 750 |
| 3 | 6 | 900 | 900 |
| 4 | 8 | 1200 | 1000 |
| 5 | 10 | 1500 | 1250 |
| 6 | 12 | 1800 | 1500 |
For each additional bedroom add 260 gallons
For each additional occupant over 2 per bedroom add 130 gallons
For a nonresidential application, the septic tank will be sized at twice the estimated daily flow
15 Miss. Code. R. 15-77-1-5.1.9