On-Site Sewage Facility Permit

On November 11, 2025, the Tarrant County Commissioner's Court adopted regulations regarding the required lot size for an On-Site Sewage Facility (OSSF). Under Court Order 146317, all subdivisions of single-family dwellings shall have lots of at least one acre, net of drainage and floodplain easements.

An OSSF permit is required for all new construction and anytime renovations significantly change the structure’s square footage or assigned water flow. Permits are also required if the type or strength of the wastewater changes from a residential wastewater classification. A repair/remodel permit is required anytime changes are made to an existing system. The regulations require that an owner must obtain a permit to repair, extended, modify or alter any of the disposal system’s existing components.

The required OSSF permit application and  depend on usage. The Residential Permit Application only covers residential properties and the Non-Residential Permit Application covers a variety of uses, among them commercial and/or industrial. Permit applications must be completely filled out and all required documents must be ready at time of submittal, failure to turn in any of the required documents may lead to processing delays.

It is important to note that if you are submitting a permit application for a new aerobic system, a completed OSSF Affidavit Form will be required. This form will have to be notarized and then filed and recorded with the County Clerks.

Once your application has been received, you will receive an email requesting payment within two business days. Please reply by email once the payment has been made.

Applications may be submitted to TSPermitting for processing.

Please refer to the OSSF Resource Documents for more details.

If you have questions or comments regarding this permit or OSSF systems in general, please contact:

Ekpen Okoruwa, Wastewater Specialist, at 817-212-7082.

Maria Moreno, Environmental Specialist, at 817-884-2634.