Plumbing Permit in Riverton, Wyoming
VerifiedRequired for plumbing installations, alterations, and repairs in Riverton. Governed by the 2024 International Plumbing Code with local amendments (RMC Chapter 15.04), including simplified rough-in testing procedures.
Verified 2026-07-01 · Source
When you need this permit
- Plumbing alteration, sanitary sewer replacement, gas line testing, water heater installation/replacement
- DWV systems (underslab only) tested on completion of rough piping by water (10 ft head, 15 min hold) or air (5 psi / 10 in. Hg, 15 min hold) test — Schedule 40 PVC allowed to be tested with air (locally amended IPC §§ 312.1, 312.3 and IRC § P2503.5.1)
- Backflow prevention: required check valve and expansion tank status noted on the application form
- Water tap size 2 inches or greater requires DEQ (Wyoming Dept. of Environmental Quality) review
Required documents
- Req
Application for Building Permit
Combined application form; PLUMBING section covers alteration, sanitary sewer replacement, gas line testing, water heater type
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Plumbing Alteration | $26.00 minimum | City of Riverton Resolution No. 1355, Category 3.B.5 |
| Water Heater Replacement (residential) | $26.00 minimum | Resolution No. 1355, Category 3.B.6 |
| Gas Piping Test | $26.00 per test or trip | Resolution No. 1355, Category 3.B.7 |
| Water or Sewer Replacement | $52.00 | Resolution No. 1355, Category 3.B.8 |
Review timeline
~1–10 business days
Typical estimate — confirm current times with the Riverton building department
Inspection process
- 1
Underground Plumbing
After all underground waste/vent/water plumbing installed and pressure tested, before backfill/concrete
- 2
Rough Plumbing
After all waste, vent, and water piping is installed, before insulation/sheetrock
- 3
Final
Part of the project's overall Final Inspection
Tips
- Riverton locally amended the IPC/IRC drain-waste-vent testing sections to a simplified standard: a 10-foot water column held 15 minutes, OR a 5 psi (10 in. Hg) air test held 15 minutes, with Schedule 40 PVC explicitly allowed to be tested with air.
- Water/sewer tap sizes of 2 inches or greater trigger a mandatory Wyoming DEQ review — factor this into your project timeline.
- Water & Sewer Plant Investment Fees (tap fees) are billed separately from building-permit plumbing fees — see the City's 'Water & Sewer Plant Investment Fees' schedule (Resolution No. 1521, revised April 1, 2025) for utility connection costs.
Frequently asked questions
- How is DWV (drain-waste-vent) piping tested in Riverton?
- Per the city's locally amended IRC/IPC provisions, underslab DWV systems are tested on completion of rough piping by either a water test (filled to 10 feet above the highest fitting, held 15 minutes) or an air test (5 psi / 10 inches of mercury, held 15 minutes without added air). Schedule 40 PVC may be tested with air.
Sources & verification
Verified against official sources. Last reviewed 2026-07-01.
- City of Riverton Community Development Department — Building Division — official building department
- City of Riverton Resolution No. 1355 — Building Permit Fees and Planning Fees
- Riverton Municipal Code Chapter 15.04 (IPC amendments) — ecode360
- City of Riverton — Water & Sewer Plant Investment Fees / Resolution No. 1521 (revised April 1, 2025)
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 Riverton building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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