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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

Yes

Professional Install

Required

Minimum Tank Size

900 gal

Tank Size Requirements

BedroomsMin Tank SizeWith Garbage Disposal
3900 gal1,350 gal
41,250 gal1,875 gal
1-2900 gal1,350 gal
5-61,500 gal2,250 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

Visit Official Website
717-787-4686
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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Disclaimer: This calculator provides estimates only and should not be used as the sole basis for septic system design. Always consult with licensed septic professionals and local health department officials before installing or modifying a septic system. Local codes may have stricter requirements than state minimums.

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