# Sec. 22-156. Table 5

Codified through Bill No. CB-018-2026, adopted May 12, 2026, effective July 24, 2026. Source: Municode, Supplement 2026 Update 2. Editorial notes and legislative history omitted.

## Sec. 22-156. Table 5

Prince George's County, Md., Code § 22-156 (2026)

(a) Septic Tank Capacity and Design Flow.

RESIDENTIAL SINGLE-COMPARTMENT TANK

| GROSS SQUARE FOOTAGE | SEPTIC TANK CAPACITY | DESIGN FLOW | MINIMUM DRAINFIELD LENGTH |
| --- | --- | --- | --- |
| 0 - 1,750 sq. ft | 1,000 gals. | 720 gal/day | 70 |
| 1,751 - 2,250 sq. ft | 1,500 gals. | 900 gal/day | 100 |
| 2,251 - 3,000 sq. ft | 1,750 gals. | 1,000 gal/day | 120 |
| > 3,000 sq. ft | 2,000 gals. | 1,000 gal/day | 130 |

RESIDENTIAL DOUBLE-COMPARTMENT TANK

| GROSS SQUARE FOOTAGE | SEPTIC TANK CAPACITY | DESIGN FLOW | MINIMUM DRAINFIELD LENGTH |
| --- | --- | --- | --- |
| 0 - 1,750 sq. ft | 1,000 gals. | 720 gal/day | 70 |
| 1,751 - 2,250 sq. ft | 1,250 gals. | 900 gal/day | 100 |
| 2,251 - 3,000 sq. ft | 1,500 gals. | 1,000 gal/day | 120 |
| > 3,000 sq. ft | 1,800 gals. | 1,000 gal/day | 130 |

(b) Commercial Septic Tank Capacity.

  (1) Tank Capacity will be based on a forty-eight (48) hour retention capacity as calculated from the average sewage flow.

  (2) Two-compartment septic tanks shall be required for commercial establishments having a design flow in excess of 1,000 gallons/day.