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Septic installation and replacement in Pine County, MN
Design, permits, and installation for new or failed systems.
A new or replacement septic system goes through the same steps whether it is for a new cabin or a failed system at a home sale: a soil evaluation, a design, a permit, installation, an inspection, and a certificate of compliance. Each step has rules worth knowing before you get quotes.
Design and sizing
A licensed designer starts with a soil evaluation to find how deep the system can go before it hits saturated soil or bedrock. Pine County's ordinance sizes systems for homes at 150 gallons per day per bedroom. For newer systems and anything in shoreland, the standard is three feet of separation between the bottom of the soil treatment area and saturated soil or bedrock. Where that is not possible in natural soil, the design may call for a mound or another system type.
Permits
It is unlawful in Pine County to construct, install, modify, or replace a septic system without a permit. The construction permit is pulled by the owner or the owner's agent before installation, and the application is signed by an appropriately licensed professional. In Pine City, Rock Creek, Henriette, and the townships that run their own programs, the permit comes from that unit instead; see our point-of-sale inspection guide.
Installation and inspection
The owner or the owner's agent must notify the county two calendar days before permitted work. A compliance inspection is done on every new or replacement system, and the result must reach the county within 15 calendar days. No new system may be put into operation until a certificate of compliance is issued. That certificate is valid for five years.
The management plan
Every new or replacement system in Pine County needs a management plan, submitted with the permit application and updated at final inspection if anything changed. It spells out what the owner can do, what a licensed provider must do, monitoring, and a maintenance schedule. Keep it with your records. It is the first thing a future buyer's inspector will ask for.
Licenses to look for
Designing and installing are separate MPCA licenses. Some companies hold both; others partner. Check each company in MPCA's SSTS license search for the license type that matches the job.
How a replacement usually goes
- Soil evaluation and system design by a licensed designer
- Construction permit from the county, city, or township
- Installation by a licensed installer, with two days' notice to the county
- Compliance inspection, certificate of compliance, and management plan
Read the Point-of-sale inspection guide for the point-of-sale rules and who handles septic where.
Sources: Pine County SSTS Ordinance (2025) §5.02.01, §5.02.03, §6.01–§6.02, §7.01–§7.02, §8.01.02 · Pine County Ordinance Jurisdiction sheet, May 29, 2025
Septic installation and replacement: questions
How is a new septic system sized?
Pine County's ordinance uses 150 gallons per day per bedroom for homes, so the bedroom count drives the size. Soil conditions then decide the type and layout.
How long is a certificate for a new system valid?
Five years from the date of issue, unless evidence of noncompliance turns up.
Areas we serve
Each town page explains who handles septic rules there.
Other services
Mound systems
Raised sand systems for sites where a standard drain field will not work.
Holding tanks
Sealed tanks that store wastewater until it is pumped out.
Frozen septic lines
Winter freeze-ups: slow drains, backups, and no flow.