Ellis County Septic Permitting
Serving Waxahachie, Ennis, Midlothian. Who to contact, what it costs where the county publishes it, and the local requirements that catch people out.
Permitting authority
Ellis County Department of Development
109 S Jackson St
Waxahachie, TX 75165
What to know here
- Applications are filed online through the MyGovernmentOnline (MGO) portal, not on paper.
- Affidavits are filed with the Ellis County Clerk. An incorrect address or legal description will be rejected — verify with the department first.
Still being filled in. Fee schedule not yet verified. County processes change without notice — call before you rely on anything here, and tell us if you find something out of date.
Reviewed August 2026.
Before you call the county
Most permit applications need the same core set of documents: a site evaluation by a licensed site evaluator or professional engineer, planning materials showing the proposed system and its layout, a plat or survey with the legal description, a confirmed 911 address, the applicable fee, and a recorded affidavit to the public where the system type requires one. Aerobic systems also need an executed maintenance contract.
Details on each step are on the permitting page, and the design page covers what a site evaluation involves.