Shared Septic System Agreement Template

This Shared Septic System Agreement (“Agreement”) is entered into as of [Effective Date], by and among:

Owner 1: [Full Legal Name], of [Address]

Owner 2: [Full Legal Name], of [Address]

Additional Owner, if applicable: [Full Legal Name], of [Address]

Each person signing this Agreement is referred to as an “Owner,” and together they are referred to as the “Owners.”

1. Properties Covered

This Agreement relates to the following real property:

Property 1 Address: [Address]
Legal Description: [Legal Description]

Property 2 Address: [Address]
Legal Description: [Legal Description]

Additional Property, if applicable: [Address and Legal Description]

2. Shared Septic System Description

The Owners acknowledge that the above properties are served in whole or in part by a shared septic system consisting of the following components:

[Describe septic tank, pump tank, lines, drainfield, reserve area, controls, alarms, electrical components, easement areas, and other related improvements]

This system is referred to in this Agreement as the “Shared System.”

3. Purpose of Agreement

The purpose of this Agreement is to define the rights and responsibilities of the Owners concerning the use, inspection, maintenance, repair, replacement, cost allocation, access, and long-term management of the Shared System.

4. Right to Use the Shared System

Each Owner shall have the right to use the Shared System for lawful residential or approved property use serving the Owner’s property, subject to the limits of this Agreement and any permit, design, health department, or regulatory requirements.

No Owner may expand use of the Shared System beyond approved capacity without the prior written consent of the other Owners and any required governmental approval.

5. Capacity and Use Restrictions

The Shared System shall be used only within its designed and permitted capacity.

Unless otherwise approved in writing, the following limits apply:

• number of dwelling units served: [Number]

• maximum bedrooms or equivalent design flow: [Number]

• maximum approved use type: [Describe]

No Owner may connect additional structures, increase flow, or change use in a way that overloads the Shared System without prior written approval.

6. Routine Maintenance Responsibilities

The Owners shall keep the Shared System in reasonably safe and proper operating condition.

Routine maintenance includes, as applicable:

• inspections;

• pumping;

• alarm checks;

• filter cleaning;

• vegetation management in protected areas;

• service contracts, if required; and

• ordinary maintenance recommended by the designer, installer, regulator, or service provider.

Routine maintenance shall be handled as follows:

[Describe who schedules service, who chooses the provider, and how often service will occur]

7. Inspection and Pumping Schedule

The Shared System shall be inspected and pumped as reasonably needed, and also as required by applicable law, permit conditions, or service recommendations.

The Owner or manager responsible for scheduling inspection and pumping is:

[Name / Owner group / manager / service company]

Copies of all inspection reports, pumping records, and service invoices shall be shared with all Owners within [Number] days after receipt.

8. Repairs and Replacement

If the Shared System needs repair, component replacement, or major work, the Owners shall cooperate in good faith to complete the work promptly.

Minor repairs may be authorized by:

[Name / manager / any Owner up to a dollar limit]

Major repairs or full replacement require:

☐ Unanimous approval
☐ Majority approval
☐ Approval as follows: [Describe]

If immediate action is reasonably necessary to prevent sewage backup, health risk, environmental harm, or property damage, emergency work may be authorized without advance approval, but notice must be given as soon as practicable.

9. Cost Sharing

The Owners agree to share costs relating to the Shared System as follows:

Routine maintenance costs: [Equal shares / percentage shares / other formula]

Repair costs: [Equal shares / percentage shares / other formula]

Replacement costs: [Equal shares / percentage shares / other formula]

Permit, inspection, monitoring, or contract costs: [Allocation method]

If one Owner causes unusual damage, overuse, blockage, misuse, or unauthorized modification, that Owner shall be responsible for the extra cost resulting from that conduct to the extent reasonably determined.

10. Payment Procedure

When Shared System expenses are incurred, the responsible Owner or manager shall provide a copy of the invoice or written expense notice to the other Owners.

Each Owner shall pay that Owner’s share within [Number] days after written notice unless the Owners agree otherwise in writing.

Unpaid amounts shall accrue interest at [Rate]% per year or the maximum lawful rate, whichever is less.

11. Access Rights and Easement Use

Each Owner grants the other Owners, their contractors, septic professionals, inspectors, and utility or governmental personnel reasonable access across the affected property as needed to inspect, maintain, repair, replace, monitor, or pump the Shared System.

Access shall be:

• limited to reasonable times, except in emergencies;

• exercised with reasonable care;

• limited to the area reasonably necessary for the work; and

• followed by reasonable restoration of disturbed areas.

If a separate recorded easement exists, this Agreement shall be interpreted consistently with that easement.

12. System Rules and Prohibited Conduct

No Owner shall knowingly misuse the Shared System.

Prohibited conduct includes:

• discharging prohibited materials;

• overloading the system with excessive wastewater;

• placing heavy vehicles or structures over restricted system areas;

• disturbing the drainfield or reserve area without approval; and

• tampering with alarms, pumps, controls, or septic components.

Each Owner shall also use reasonable care to protect the Shared System from avoidable damage.

13. Records and Compliance

A complete file of Shared System records shall be maintained, including:

• permits and approvals;

• design documents, if available;

• inspection reports;

• pumping records;

• repair invoices;

• maintenance contracts; and

• notices of malfunction or enforcement, if any.

The recordkeeper shall be:

[Name / rotating owner / manager]

Each Owner shall cooperate with any lawful inspection, monitoring, reporting, or compliance requirement affecting the Shared System.

14. Sale, Transfer, or New Owner

This Agreement shall bind and benefit the Owners and their respective heirs, successors, assigns, and future owners of the covered properties.

Before selling or transferring a property covered by this Agreement, the transferring Owner shall provide the buyer with a copy of this Agreement and any reasonably available Shared System records.

Any new owner shall be deemed bound by this Agreement to the extent allowed by law.

15. Default

An Owner is in default under this Agreement if that Owner:

• fails to pay required Shared System costs;

• materially interferes with maintenance or access;

• misuses the Shared System;

• violates a material term of this Agreement; or

• fails to comply with applicable septic requirements affecting the Shared System.

If a default occurs, the non-defaulting Owner or Owners may give written notice and allow [Number] days to cure, unless emergency conditions require faster action.

16. Dispute Resolution

If a dispute arises under this Agreement, the Owners shall first attempt in good faith to resolve it through direct discussion.

If the dispute is not resolved, it shall be handled by:

☐ Mediation
☐ Arbitration
☐ Court proceedings
☐ Other: [Describe]

17. Governing Law

This Agreement shall be governed by the laws of [State/Country], except to the extent mandatory real estate, environmental health, wastewater, or local code requirements apply.

18. Entire Agreement

This Agreement contains the complete understanding among the Owners regarding the Shared System and supersedes prior oral and written discussions on that subject.

Any amendment to this Agreement must be in writing and signed by all Owners.

19. Signatures

Owner 1:

Signature: __________________________
Name: [Full Legal Name]
Date: [Date]

Owner 2:

Signature: __________________________
Name: [Full Legal Name]
Date: [Date]

Additional Owner, if applicable:

Signature: __________________________
Name: [Full Legal Name]
Date: [Date]

20. Optional Notary Acknowledgment

State of [State]
County of [County]

On this [Day] day of [Month], [Year], before me, the undersigned notary public, personally appeared [Name of Signer], known to me or satisfactorily proven to be the person whose name is subscribed to this document, and acknowledged that they executed it for the purposes stated herein.

Notary Public Signature: __________________________
Printed Name: [Notary Name]
My Commission Expires: [Date]
Notary Seal: __________________________

21. Optional Attachment List

☐ Exhibit A – Property Legal Descriptions
☐ Exhibit B – Septic System Map or Site Plan
☐ Exhibit C – Cost Sharing Schedule
☐ Exhibit D – Maintenance Contact Information
☐ Other: [Describe]