State Requirements
Pennsylvania Septic Tank Requirements
Complete guide to septic system requirements in Pennsylvania (PA). Use our calculator for personalized recommendations.
Regulatory Agency
Pennsylvania Department of Environmental Protection
Permit Required
YesProfessional Install
RequiredMinimum Tank Size
900 gal
Tank Size Requirements
| Bedrooms | Min Tank Size | With Garbage Disposal |
|---|---|---|
| 3 | 900 gal | 1,350 gal |
| 4 | 1,250 gal | 1,875 gal |
| 1-2 | 900 gal | 1,350 gal |
| 5-6 | 1,500 gal | 2,250 gal |
Drainfield Sizing by Soil Type
Minimum square feet of absorption area based on soil percolation rate:
Gravel/Sandy
125
sq ft minimum
Sandy
175
sq ft minimum
Loam
225
sq ft minimum
Clay
325
sq ft minimum
Pennsylvania Specific Notes
- Act 537 sewage planning requirements
- Rocky terrain in much of state
- Two-compartment tanks preferred
Regulatory Contact
Pennsylvania Department of Environmental Protection
Important Disclaimer
This information is provided for reference only. Local county or city requirements may be stricter than state minimums. Always verify requirements with your local health department before installation.
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