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Sumter County, SC Environmental Rules: Stormwater Management (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Governing law
Sumter County Code § 14-25, § 14-90 et seq.
Base rate
$30.00 per EDU per year
Residential fee
$15.00/year (0.50 EDU)
Commercial/nonprofit fee
$45.00/year (1.5 EDU)
Industrial fee
$90.00/year (3 EDU)
Appeal window
30 days to county administrator
Adopted
Ord. No. 15-830, March 24, 2015

Summary

Unincorporated Sumter County requires a stormwater permit before any land disturbing activity and funds county-wide drainage upkeep through a stormwater utility fee. Sumter County Code § 14-25 bars altering the land surface except under an approved plan, while § 14-97 sets the base rate at $30 per Equivalent Dwelling Unit, billing residential parcels $15 a year. Commercial, industrial and most agricultural properties pay more.

These county ordinances apply to unincorporated areas of Sumter County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

Unless otherwise provided within this article, the surface of land in the unincorporated areas of the county shall not be disturbed or altered for any purpose whatsoever, except in accordance with this article. ... The basis of the service charge rate is one EDU as defined in this article. The stormwater service charge for one EDU is $30.00 per year. ... (1)Residential properties, ... as defined by this division, shall be billed for the stormwater service charges, as defined in this division, of .50 EDU, equivalent to $15.00 per year.

Full Breakdown

The county's stormwater management and sediment control ordinance, adopted by Ord. No. 15-830 on March 24, 2015, requires that anyone disturbing land in the unincorporated areas first obtain a stormwater permit under Sumter County Code § 14-25 and submit an application under § 14-30, including five copies of a stormwater management and sediment control plan meeting the standards in §§ 14-55 and 14-56. Separately, Article II, Division 7 establishes a stormwater utility that applies countywide, described in the county council's findings at § 14-90 as the mechanism for funding stormwater management services and drainage systems benefiting all residents.

00 per Equivalent Dwelling Unit per year. 00 annually, a flat rate reflecting average road-related drainage use. 00 a year, both subject to reassessment during a two-year evaluation period based on actual impervious cover. 5 EDU. Section 14-98 lets the county bill the charge with property taxes or other county assessments and backbill up to one year for underbilled or unbilled developed land. A customer disputing an assessment may appeal in writing to the county administrator under § 14-99; a technical committee made up of the stormwater department director and two administrator-appointed members must respond within 30 days, and an adverse decision can be appealed again to the administrator within another 30 days.

Violations & Fines

Land disturbed without an approved plan can draw a stop-work order under § 14-75, served by the Sheriff's Office or county code enforcement, halting site work until violations are corrected; continuing to work after service is itself a separate violation subject to civil penalty. Failing to pay the stormwater utility charge does not excuse the debt: § 14-98 lets the county collect delinquent fees along with property tax bills and pursue standard tax-collection remedies.

Frequently Asked Questions

Do I need a permit to disturb land in unincorporated Sumter County?
Yes. Sumter County Code § 14-25 says the land surface in the unincorporated county may not be disturbed or altered for any purpose except in accordance with the stormwater management and sediment control article, and § 14-30 requires a written application with a stormwater plan before work starts.
How much does the Sumter County stormwater fee cost for a house?
A residential parcel is billed 0.50 Equivalent Dwelling Units under § 14-97, which works out to $15.00 a year at the county's $30.00-per-EDU base rate. Commercial and nonprofit parcels pay $45.00 a year and industrial parcels pay $90.00 a year, both subject to reassessment based on impervious surface.
Can I appeal my stormwater utility bill in Sumter County?
Yes. Section 14-99 lets a commercial, industrial or agricultural customer file a written appeal with the county administrator, who refers it to a technical committee that must respond within 30 days; an adverse decision can be appealed again to the administrator within another 30 days.

Sources & Official References

Other rules in Sumter County

All Sumter County rules

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