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South Carolina stormwater rules, in plain English.

Short, general guides for small contractors, builders, and HOA boards: which SCDES form fits which situation, what changed in the 2026 construction general permit, and where to find Clemson's public inspector lists.

Which permit or form?

Last checked: October 20, 2026 against the source documents. Based on: CGP cover page (p.1) and sections 2.3 and 2.5 (pp.14, 20).

2026 permit: SCDES's construction stormwater general permit SCR100000 shows “Issued: February 27, 2026”, “Effective: March 30, 2026” and “Expires: March 29, 2031” on its cover page. [CGP cover, p.1] (SCDES's fact sheet gives March 30, 2031 instead; we show the date printed on the permit. See What changed.) NOIs are submitted electronically through SCDES's ePermitting portal. [CGP 2.3, p.14; 2.5, p.20]

For contractors and builders

Which permit or form?

A general guide to the NOI, Individual Lot NOI, contractor certification, utility blanket NOI, transfer of ownership, and Notice of Termination.

1 acre vs. 2 acres

The 1-acre line decides whether coverage is needed. The permit's “more than 2 acres” line decides who must prepare the SWPPP and who may do the inspections.

What changed in 2026

The changes SCDES's own fact sheet highlights: ePermitting, certifier identity verification, the Utility Blanket NOI, virtual pre-construction conferences, and more.

For HOA boards and property managers (Upstate)

HOA stormwater pond agreements

What Greenville County's HOA maintenance agreement form says about annual inspection reports, the escrow account, and what happens if repairs aren't done.

Guides and templates

What South Carolina requires in a SWPPP (2026 Construction General Permit SCR100000)

The SCDES Notice of Intent (NOI): who files it, how, and when

Weekly SWPPP inspection checklist (SC permit SCR100000, Section 4.2)

What does an HOA detention pond cost to inspect and maintain? (South Carolina)

SC construction stormwater forms: links to the agencies' own versions

Learning resources: SC construction stormwater and HOA ponds

Frequently asked questions

Sources for this page

Citations like “CGP 4.2.B, p.53” mean section 4.2.B of the permit, on page 53 of the PDF. Last checked October 20, 2026. Where we quote, the quote is copied from the source; where we summarize, read the quoted section before relying on it.