Texas Porch

Denton County, Texas

27 local notes for Denton County — practical, plain-English, and pointed at the official source to confirm. DFW / North Texas.

See the Denton place page ->

Money & Taxes

Home & Property

Septic Systems

Unincorporated Denton County homes without city sewer need a septic permit

Installing, repairing, or changing a septic system outside city limits in Denton County requires a permit from the county Environmental Health Division.

City vs. County Rules

Many Denton County addresses are inside a city's planning zone, not the city itself

Texas cities have an extraterritorial jurisdiction — a buffer zone outside city limits — where they can regulate subdivisions and plats even if you pay county taxes.

Flood Hazard

Denton County has active FEMA flood maps that affect insurance and building

FEMA released preliminary flood maps for Denton County in June 2026, affecting areas along the Elm Fork Trinity River and its tributaries.

Weather Hazard

Denton County sits in an active tornado corridor in North Texas

The National Weather Service tracks tornadoes in Denton County going back to 1880, and the county lies in an area where spring severe weather is a regular concern.

Groundwater Rules

Parts of Denton County fall under the North Texas Groundwater Conservation District

If your property uses a private well in parts of Denton County, groundwater conservation district rules may apply to drilling and use.

Emergency Alerts

Sign up for NWS Fort Worth alerts to get weather warnings for Denton County

The National Weather Service Fort Worth office issues tornado, severe thunderstorm, and winter storm warnings for Denton County — sign up for alerts before storm season.

Water Supply

Denton County's water supply planning is overseen by the state

The Texas Water Development Board coordinates regional water supply planning for Denton County as part of Region C, which covers the upper Trinity River Basin.

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