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Knox County, TN Environmental Rules: Stormwater Management (2026)

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

Key Facts

Governing ordinance
Knox County Stormwater Mgmt. Ordinance, Sec. 26-151
Enforcing agency
Dept. of engineering and public works
Civil penalty
$250.00 to $5,000.00 per day
Appeal path
Board of zoning appeals, 30 days
Readopted
Ord. No. O-24-7-101, Aug. 26, 2024
Coverage
Entire unincorporated county

Summary

Knox County's engineering and public works department enforces the Knox County Stormwater Management Ordinance, Sec. 26-151 et seq., across the entire unincorporated county. Violators face civil penalties of $250.00 to $5,000.00 per day of violation under Sec. 26-157, on top of stop-work orders, withheld permits and required corrective action, with an appeal path through the board of zoning appeals.

City-specific rules exist: Knoxville has its own stormwater management rules that differ from Knox County's county-level regulations. If you live in Knoxville, check the city-specific page instead.

This article shall be cited as the Knox County Stormwater Management Ordinance and shall replace in its entirety Ordinance No. O-07-12-101, adopted January 28th 2008, as amended... This article shall apply to all areas located within the jurisdiction of the county. (Sec. 26-151) ... Any person who violates the provisions of this article shall be subject to a civil penalty of not less than $250.00 or more than $5,000.00 per day for each day of each violation. Each day of violation may constitute a separate violation. (Sec. 26-157(b))

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 23).

Full Breakdown

Sec. 26-151 cites this ordinance as the "Knox County Stormwater Management Ordinance," readopted by Ord. No. O-24-7-101 on August 26, 2024, replacing the county's 2008 stormwater code. It applies countywide, and the director of the department of engineering and public works, with the county mayor's approval, writes the technical stormwater management manual that fills in design and enforcement detail. Sec. 00 per day for each day of each violation, with each day treated as a separate violation. In setting the penalty, the county weighs harm to public health or the environment, whether the fine will actually deter the conduct, the economic benefit the violator gained, and any unusual enforcement costs the county incurred.

§ 27-8-101. Sec. 26-313 separately bans illicit discharges into the county's storm sewer system, from sanitary sewer overflows to wash water from auto repair shops and construction sites, and Sec. 26-316 makes it illegal to intentionally dump an EPA priority pollutant where rain or stormwater could carry it into the system.

Violations & Fines

Sec. 26-157 sets civil penalties of $250.00 to $5,000.00 per day for each day of each violation, plus recovery of the county's actual damages, on top of stop-work orders and withheld permits or inspections. An unappealed penalty becomes final after 30 days and the county can obtain a chancery court judgment to enforce it.

Frequently Asked Questions

Who enforces stormwater rules in Knox County?
The director of engineering and public works, under Sec. 26-151, administers the ordinance and writes the technical stormwater management manual that developers and property owners must follow. The board of zoning appeals hears variance requests and civil penalty appeals, and cannot approve a variance that would put the county in violation of a state or federal NPDES permit.
What happens if I violate the stormwater ordinance?
Sec. 26-157 sets civil penalties from $250.00 to $5,000.00 per day for each day of each violation, and the county can also recover any actual damages the violation caused. You can request a meeting with the director within ten business days of notice, then appeal an unfavorable decision to the board of zoning appeals within 30 days.
What discharges into the storm sewer system are illegal?
Sec. 26-313 bans illicit discharges into the county's storm sewer system, including sanitary sewer overflows, wash water from auto repair or car washing, and construction site runoff. Sec. 26-316 separately makes it illegal to intentionally dump an EPA priority pollutant anywhere rain or stormwater could carry it into the system.

Sources & Official References

Other rules in Knox County

All Knox County rules

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