Septic / Small Wastewater System Permit in Unincorporated Sweetwater County, Wyoming
VerifiedNew or replacement septic (onsite wastewater) systems in unincorporated Sweetwater County are permitted through the Sweetwater County District Board of Health's Environmental Health division, not the Land Use building/zoning office. Approval of septic applications is by appointment only.
Verified 2026-07-01 · Source
When you need this permit
- Obtain and complete the Conventional Septic System Application Package from Environmental Health
- Schedule an appointment — the county approves all septic applications by appointment only
- Larger or non-conventional systems may fall under Wyoming DEQ small-wastewater-system permitting rather than the county's conventional-system program
Required documents
- Req
Conventional Septic System Application Package
County Environmental Health's septic application PDF packet
Fee schedule
| Fee type | Amount | Notes |
|---|
Review timeline
~5–20 business days
Typical estimate — confirm current times with the Unincorporated Sweetwater County building department
Inspection process
Tips
- Septic approval is handled by the District Board of Health's Environmental Health division, a different office than Land Use — plan for a separate application and appointment.
- For systems outside the conventional-system program, check Wyoming DEQ's Water Quality Division small wastewater permitting.
Sources & verification
Verified against official sources. Last reviewed 2026-07-01.
- Sweetwater County Land Use Department (Planning & Zoning) — official building department
- Sweetwater County Environmental Health — Septic Application (conventional system package, by-appointment approval)
- Sweetwater County Land Use — links to 'SWC Environmental Health Septic Permit' as an additional resource for construction
- Wyoming DEQ — Water Quality Water/Wastewater Permitting
Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Unincorporated Sweetwater County building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
Other permits in Unincorporated Sweetwater County
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