When does my Dallas project need septic (OSSF) approval?
Answered by AskBaily Editorial · Updated
Short answer
Parcels outside Dallas Water Utilities' sewer service territory — typically in outer Dallas County, Denton County edges, or parts of Kaufman or Collin counties adjacent to Dallas — fall under Texas Commission on Environmental Quality (TCEQ) OSSF rules administered locally. A bedroom addition, fixture-count increase, or footprint expansion on a septic-served parcel triggers a licensed designer's OSSF evaluation before Dallas Development Services issues a permit.
In detail
Parcels outside Dallas Water Utilities' sewer service territory — typically in outer Dallas County, Denton County edges, or parts of Kaufman or Collin counties adjacent to Dallas — fall under Texas Commission on Environmental Quality (TCEQ) OSSF rules administered locally. A bedroom addition, fixture-count increase, or footprint expansion on a septic-served parcel triggers a licensed designer's OSSF evaluation before Dallas Development Services issues a permit.
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