Mercer County, PA septic permits and regulations
Septic systems in Mercer County, Pennsylvania are permitted by Mercer County Regional Planning Commission under 25 PA Code Chapter 73.
Septic permit program
- Program type: Municipality-Based
- Authorized agent: Mercer County Conservation District
- Own septic program: No, uses Pennsylvania state rules
- Local rules beyond the state: No
- Population: 110,652
Permit fee comparison
Average septic permit fee in Mercer County: $250. Pennsylvania average: $393.
Local rules
County operates under state-level 25 Pa. Code Chapter 73 (Standards for Onlot Sewage Treatment Facilities). Contact local health department for any additional county-specific requirements.
What SepticPro has on file for Mercer County
- 1 permit fee with sources
- The agency phone, email and office address
- Setback distances
- Soil and perc test requirements
- Allowed system types
- System design rules
- Inspection requirements
- Maintenance and pumping rules
- Point-of-sale rules
- Installer, designer and pumper licensing
Create a free account to see the full details.
Draw a permit-ready site plan for Mercer County
Enter the address, draw the system on the aerial with the parcel lines and topo, and print it to scale for Mercer County Regional Planning Commission. See how SepticPro site plans work.
Other Pennsylvania counties
- Adams County
- Allegheny County
- Armstrong County
- Beaver County
- Bedford County
- Berks County
- Blair County
- Bradford County
- Bucks County
- Butler County
- Cambria County
- Cameron County
- Carbon County
- Centre County
- Chester County
- Clarion County
- Clearfield County
- Clinton County
- Columbia County
- Crawford County
- Cumberland County
- Dauphin County
- Delaware County
- Elk County
Data checked 2026-03-16. Always confirm requirements with Mercer County Regional Planning Commission before applying.