Septic Forms & Compliance

Time to Read: 8 Minutes | Date: January 13th, 2026
Septic System Flow Diagram: House to Drainfield
The Bottleneck: Building permits are often tied to Health Department approval. You cannot close a permit on a renovation if the septic certification is missing.
01

Repair Permit Application

When the System Fails

Applying for a repair permit is required when a component of the system (Tank or Drainfield) is structurally compromised or hydraulically failing.

Scope of Work:

This is not for simple maintenance (like pumping). This covers:

  • Replacing a cracked tank.
  • Rejuvenating or replacing a failed drainfield.
  • Relocating a system due to sinkholes or root intrusion.
Note:

"Emergency repairs must wait for permit approval so it is crucial to file as soon as possible to avoid prolonged system downtime. Confirm with your service provider if the cost of the permit is included in their repair quote."

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02

Existing System Certification

Renovations & Additions

If you are renovating a home, even if the work does not directly impact the plumbing (e.g., adding a deck, pool, or garage), the building process may be halted until the Health Department certifies the septic system.

The "Bedroom" Rule

If your renovation adds a bedroom (or a "den" with a closet), you are legally increasing the occupancy load. Result: You may be forced to expand the drainfield before the renovation is approved.

The Process:
  • System pump-out and inspection.
  • Site plan review to ensure new structures don't encroach on setbacks.
  • Verification of tank size and drainfield capacity.
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03

New Construction Permit

Builder & Sub-Contractor Protocol

As a home builder, the septic permit is often the first hurdle before foundation work can begin. Not only can it dictate the site layout, but it also requires coordination with excavation and plumbing subcontractors. In some counties work cannot proceed until the Health Department approves the system design and issues the permit number to be referenced on the building permit.

Site Plan Criticality

The drainfield location is fixed based on soil samples. You cannot simply "move it over" to fit a larger driveway. All site work must respect the approved drainfield location and setbacks. Be Careful: Driving heavy machinery over the designated drainfield area during construction compaction can ruin the soil's absorption rate before the house is even built. For this reason many contractors like to among the last vendors on site. If this is not possible ensure the area is clearly marked and protected with temporary fencing or caution tape.

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04

ATU Operating Permit

Operating Permits (ATU/Commercial)

Aerobic Treatment Units (ATUs) and commercial systems often require a renewable Operating Permit. This mandates a maintenance contract with a certified provider and bi-annual inspections.

If an ATU is not properly maintained, it can lead to system failure, environmental contamination, and potential health hazards. Regular inspections and servicing are crucial to ensure the system operates efficiently and complies with local regulations. These are not "set and forget" systems and require ongoing attention to function correctly.

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05

System Abandonment

Abandonment Forms

When connecting to city sewer or demolishing a home, you must file for Abandonment. This is to ensure the old septic system is properly decommissioned to prevent future hazards. The drainfield can often be left in place, but the tank must be pumped, crushed, and filled.

Liability Risk:

You cannot just "leave" an old tank. It must be pumped, the bottom crushed (to prevent floating), and filled with sand/dirt. An unfilled abandoned tank is a sinkhole hazard for future tenants. When connecting to city sewer a contractor should ask you to run all the fixtures in your home to ensure that all the tanks are accounted for and properly abandoned. Depending on the home there may be multiple tanks (e.g., a septic tank and a separate grease trap for a kitchen).

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Form Selection Matrix

Scenario
Required Form / Action
Replacing a cracked tank
Repair Permit
Building a Pool / Deck
Existing System Certification
Adding a Bedroom
Modification Permit (System Expansion)
Connect to City Sewer
Abandonment Permit
ATU / Performance System
Operating Permit (Annual Renewal)