Mississippi — plumbing code & licensing

Partially verified

Partially verified. Mississippi has no statewide plumbing code; the sections establishing that — §§19-5-9 and 21-19-25 — were read in Legislature-hosted bill text reproducing them, because the official Mississippi Code portal was unreachable in this pass. The proposed-amendment language in that bill text is not relied on. Local journeyman/master licensing, if any exists, was not established from an official state source.

The code

Code family	No statewide plumbing code - local adoption (nationally recognized codes are statutory minimum standard guides only)
Edition in force	no statewide edition — adoption is local
Effective date	no statewide code — adoption and dates are local
Adopted by	County boards of supervisors (unincorporated areas, Miss. Code Sec. 19-5-9) and municipal governing authorities (Sec. 21-19-25), by order/resolution or ordinance
Adoption source	http://billstatus.ls.state.ms.us/documents/2025/html/HB/1200-1299/HB1228IN.htm
State amendments	Amendments are a local matter — no state-level set

Licensing

Model	state contractor licensing only (commercial and residential) - no state individual journeyman/master plumbing license found on MSBOC official pages
Authority	Mississippi State Board of Contractors (MSBOC)
Licensing source	https://www.msboc.us/general-info/frequently-asked-questions/
License classes	https://www.msboc.us/contractors/licenses/

Permits & inspections

Mississippi Code Sec. 19-5-9(11) and Sec. 21-19-25(6) as reproduced in the Legislature-hosted bill text require permitting as a condition to construction in county unincorporated areas and municipalities (with limited population-based opt-outs in the introduced bill text; opt-out language is a proposed amendment, not current law).

How this record was verified

Adoption	Partially verified
Amendments	Not applicable
Licensing	Partially verified
Permits & inspections	Partially verified

Why partial: a structural absence rests on the form of the source; a source hasn't been opened firsthand yet.

Working notes

OPEN GATES: (1) No statewide plumbing edition or effective date exists - Sec. 19-5-9(1) adopts codes published by nationally recognized code groups only as minimum standard guides, and Sec. 21-19-25(1) leaves adoption to municipalities by ordinance; both fields are blank. (2) Confirm the statute text against the official Mississippi Code portal (LexisNexis, linked by the Legislature) before wiring: the portal was unreachable from this VM, so the sections were read firsthand from Legislature-hosted bill text (HB1228, 2025) reproducing them; the ***-marked opt-out language in that bill text is a proposed amendment, not current law, and is NOT relied on. (3) Local journeyman/master licensing, if any, was not established from an official state source. Licensing confirmed from MSBOC: commercial contractors/subcontractors on jobs over $50,000 need an MSBOC commercial license (Certificate of Responsibility); residential plumbing subcontractors must be MSBOC-licensed; MSBOC classifications include Residential Plumbing, and commercial applicants select a Major and/or Specialty classification (Mechanical Work for commercial plumbing).

Compiled from the official sources above; retrieved 2026-10-31. Record basis: structural absence on official sources.

Reference only. Compiled from the cited official sources as of the date shown; adoptions and rules change. Confirm with the authority having jurisdiction before designing or permitting work.