On-Site Sewage Facilities Program (OSSF)
The term "on-site sewage facility" (OSSF) refers to all types of systems used for sewage disposal on a single property. A conventional septic system is just one of several systems available. The type of system suitable for a property depends on the soil type, site characteristics, physical features, and the property's intended uses.
Program Information
The OSSF program serves as the designated representative for McLennan County to implement and enforce the rules adopted under the Texas Health and Safety Code, Chapter 366, and Title 30 TAC, Chapter 285, On-Site Sewage Facilities. Through an agreement between the City of Waco and McLennan County, the Health District administers the program for McLennan County, the cities in McLennan County, and the City of Waco. The division is also responsible for investigating and resolving complaints regarding on-site sewage facilities. The OSSF program is comprehensive in nature because the goal is to eliminate and prevent health hazards and pollution to our county’s sewage disposal systems.
Contact Us
Phone: (254) 299-2473
Fax: (254) 750-6619
Address: 401 Franklin Avenue - Mae Jackson Development Center - 1st Floor
Hours: 8 a.m. - 5 p.m., Monday - Friday
Fee Schedule
Effective September 1, 2025
OSSF Fee Schedule
Any Type of Non-Aerobic Treatment Unit: Permit Fee and System Major Repairs
Includes application, permit, inspections and notice of approval:
- Single Family Residence: $430.00*
- Commercial Non-Single Family: $630.00*
Aerobic Treatment Units: Permit Fee & System Major Repairs
Includes System replacement, drain field or disposal area replacement, or any repairs or replacements regardless of size to a previously un-permitted system:
- Aerobic OSSF Maintenance: $100.00
- Single Family Residences: $530.00*
- Commercial Non-Single Family (single structure): $630.00*
Reinspection Fee
- Single Family Residences: $200.00
- Commercial Non-Single Family: $300.00
System Minor Repairs
Increasing, lengthening, or expanding the treatment (tanks) or disposal system (drain field/disposal area), relocating the spray area, or replacing a single tank, such as a collapsed pump tank.
- Single Family Residences: $230.00*
- Commercial/Non-Single Family: $330.00*
Additional Fees:
- Design Re-Submittal Fee: $50.00 (applied each time system designs are returned due to incomplete, incorrect or non-compliant information)
- Annual Aerobic Unit Maintenance Fee (per aerobic unit): $20.00
After initial two-year warranty, all aerobic units must have an ongoing maintenance contract. The fee is submitted by the provider or by the owner if the owner is maintaining the system personally.
- Maintenance Provider Administrative Penalty Fee (per contract): $25.00
When a provider - not homeowner - fails to submit complete and correct reports on-time, or fails to provide the contracted number of inspections.
- Subdivision Plat Review Site Evaluation: $100.00 (review of planning materials for site suitability)
- *Texas On-Site Wastewater Treatment Research Council Fee: $30.00
Mandatory fee required on all permits, new or repairs. Fees collected are forwarded to the Research Council. No portion of the fee is retained.