Before committing to a Wayne County addition on a septic property, ask the Health Department how the proposed changes affect the existing system. A CAP approval is not a septic-capacity finding or a plumbing permit. The addition’s footprint, intended use and plumbing scope need to be considered together, even when different offices handle the paperwork.
Wayne Health identifies its Environmental Health unit as the starting point for installing, altering, replacing or abandoning a sewage treatment system. Its sewage guidance requires permission before system construction or repair. That does not establish that every home addition needs a new system; the office must assess the actual proposal.
Describe what the addition changes
Use the following LSL coordination matrix before requesting a fixed construction scope. It is not an official application, required drawing specification or substitute for a site evaluation.
| Proposed change or unknown | Material to take to the review | Question to resolve |
|---|---|---|
| New rooms or a different intended use | Existing system record and description of present and proposed use | Does this change require a system evaluation, revised design or other approval? |
| Foundation, excavation or new paved area | Proposed footprint and available site/system plans | What information does Health need to assess the relationship to the system and well? |
| Added, moved or altered plumbing | Fixture list and proposed plumbing scope | Which separate plumbing application and inspections apply? |
| System location or prior approval is uncertain | Whatever permit, as-built and service records are available, with gaps marked | Which missing record or qualified investigation is needed before the scope can be settled? |
Do not invent measurements or assume an old sketch is a survey. Ask the responsible office what current plan it needs. Have the estimate identify who obtains that information and whether system design, alteration and restoration are included, excluded or unresolved.
The separate Wayne County locality and CAP guide helps identify the building route. A county mailing address alone does not settle municipal or township jurisdiction.
The CAP form has changed; Health questions have not become optional
Open CAP Forms in the County permit directory rather than reuse a saved March packet. On September 12, that directory linked the July-named CAP. It collects site and disturbance information and applicable plan attachments; its printed approval block names Wayne Soil & Water Conservation District.
The older form cited here had separate Health questions and multiple agency signoff rows. Their absence from the current file is not evidence that separate approvals are waived. Ask staff how the Health response belongs with the current submission. Keep any written determination alongside the exact plan version it addresses.
We could not verify the former instructions’ specific list of additions requiring Health CAP review or its claimed waiver examples. Those lists have been removed. A detached-versus-attached label alone should not be used to decide that Health has no role.
If the sewage system needs work
The live Health page places design approval before the installation or alteration permit. For soil-based installations beginning November 1 through April 30, it also calls for prior Environmental Health approval. Resolve that scheduling condition before agreeing to a winter start; it is not a blanket seasonal ban.
For installation, the linked permitting handout separates these outcomes:
- Inspection of the installed work, with enough left visible for the inspector.
- Submission of the applicable as-built, materials or start-up documentation.
- Correction of deficiencies and final approval when the installation and paperwork are accepted.
Have the installer confirm notice and inspection arrangements with Health before work is covered. This guide provides no excavation, exposure or system-design instructions.
There is a source discrepancy worth asking about: the live page describes an operating permit after approval for use, as-built submission and a 12-month inspection. The handout describes operating-permit issuance earlier, followed by a later inspection and continuing conditions. Ask Health when your operating permit is issued and what must happen before use. Do not treat either chronology as a permission LSL has obtained for your property.
The handout’s older upload path, fees and estimated turnaround are not a current project quote. Ask for the applicable fee schedule and appointment requirements together.
Plumbing remains a separate application
Wayne Health’s plumbing page requires a permit before covered installation or alteration. It describes applications by the contractor or a homeowner who lives at the residence. Neither an addition estimate nor a CAP submission replaces that permit.
Keep the approved plumbing scope and its inspection results with the building documents. If a fixture or layout changes, ask which application or approved plan needs revision; a signed construction change order does not itself amend government approval.
What this review establishes
LSL reread the County directory and Health pages on September 12, 2026, and reviewed both pages of the current CAP and sewage handout as text and rendered images. We compared their purposes and documented the unresolved operating-permit sequence. No parcel, system, soil, design, capacity, price or private approval was evaluated, and no office was contacted.