Septic rules and requirements in Parker County, Texas
Septic permits in Parker County are issued by the county environmental health office. A new system permit costs $480. USDA rates most of the soil in the county Very limited for septic absorption fields — 76.7% of the rated acres. Parker County — Permitting · checked 2026-09-23
$480
Septic system permit
checked 2026-09-23
Very limited
USDA rating, 76.7% of rated acres
checked 2026-09-12
Who issues septic permits in Parker County?
The county environmental health office, at 1114 Santa Fe Drive, Weatherford, TX 76086, 817-598-6175. It is part of county government. The state writes the rules it applies.
The office answers Monday through Friday, seven in the morning to four in the afternoon. Its fax number is 817-598-6177.
Parker County — Permitting · checked 2026-09-23
What does a septic permit cost in Parker County?
$480 for a septic system permit, on the county's own schedule.
Applies to a conventional or an aerobic septic permit. Both carry the same fee.
| Conventional Septic Permit Requirements | $480 | a conventional system |
|---|---|---|
| Aerobic Septic Permit Requirements | $480 | a aerobic system |
Parker County sets this fee itself. The state sets no fee for a county-issued permit. Pay by cash, check, or money order. An aerobic permit also needs a signed contract and a filed affidavit. A conventional permit needs neither.
Parker County Permitting Department — Permitting Procedures for Your On-Site Sewage Facility · checked 2026-09-23
Is the soil in Parker County suitable for a septic system?
USDA rates most of the county Very limited for septic absorption fields — 76.7% of the rated acres. A rating describes the ground, not a parcel. The county's site evaluation decides each lot.
USDA NRCS Soil Data Access (SSURGO) · checked 2026-09-12
What Parker County sets itself
The state writes the code. Parker County adds the rules below. They are what makes this page differ from the Texas requirements.
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$480
Applies to a conventional or an aerobic septic permit. Both carry the same fee.
Parker County sets this fee itself. The state sets no fee for a county-issued permit. Pay by cash, check, or money order. An aerobic permit also needs a signed contract and a filed affidavit. A conventional permit needs neither.
Parker County Permitting Department — Permitting Procedures for Your On-Site Sewage Facility · checked 2026-09-23
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Parker County sets a one-acre minimum lot size for a new septic system. This rule applies whether the lot has a public water supply or a private well.
The state lets a lot on public water be half an acre. It asks for one acre only where there is no public water supply. Parker County drops that difference and asks for one acre everywhere.
Parker County Order (2007) — Rules for On-Site Sewage Facilities, Section 10(A) · checked 2026-09-23
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Parker County requires a permit for every septic system in the county.
Applies to every on-site sewage facility. It covers a one-family home on a large lot that is otherwise exempt.
The state excuses some homes on a large lot from a permit. Parker County's order ends that excuse.
Parker County Order (2007) — Rules for On-Site Sewage Facilities, Section 10(B) · checked 2026-09-23
Sources
Each figure above has a government source and a checked-on date. USDA's Soil Data Access service supplies the soil records. A script writes them, and nobody types them.
- Parker County — Permitting
- Parker County Order (2007) — Rules for On-Site Sewage Facilities, Section 10(A)
- Parker County Permitting Department — Permitting Procedures for Your On-Site Sewage Facility
- Texas Administrative Code, Title 30, Chapter 285, §285.91(12), Table II
- USDA NRCS Soil Data Access (SSURGO)
Verify before you act. Septic rules are set locally and they change. Check anything here before you spend money on it. Call the county environmental health office, on 817-598-6175.