Williamson County
Williamson County Department of Sewage Disposal Management
In short
Williamson County Department of Sewage Disposal Management issues 2 permits we publish for Williamson County, last verified 2026-10-08. Each carries the fee as the agency publishes it, with a link to the schedule it was read from.
What this agency issues
| Permit | Issuing agency | Fee | Renews | Last checked |
|---|---|---|---|---|
| Alternative Subsurface Sewage Disposal System (Septic) Permitonly if it applies to you | Williamson County Department of Sewage Disposal Management | $550 per alternative system permit | per system | 2026-10-08 |
| Septic Operation Permit — Qualifying Commercial/Non-Residential Facilitiesonly if it applies to you | Williamson County Department of Sewage Disposal Management | Under Section 33 of the regulations, fees are set by the Williamson County Board of Health and 'listed and displayed at the Department offices'; the Operation Permit fee is not published online — contact the Department at (615) 790-5751 | 1 year; renewal application due 30 days before expiry | 2026-10-08 |
Fees shown as a range or formula are set that way by the issuing agency — we do not average them into a single number.
About each permit
Alternative Subsurface Sewage Disposal System (Septic) Permit
As published on the county's Conventional/Alternative SSDS System Permit Fee Justification (dated 30 June 2026), linked from the current Sewage Disposal page, an alternative subsurface sewage disposal system permit costs $550 ('ALTERNATIVE SSDS PERMIT - $550 FEE'). Williamson County's Department of Sewage Disposal Management, under the Williamson County Board of Health's regulations, permits septic systems; this applies only to a business site that is not served by public sewer. The fee for a conventional system is not published in that sheet; contact the Department at (615) 790-5751 for the current amount and to confirm which system type a site needs.
Septic Operation Permit — Qualifying Commercial/Non-Residential Facilities
Section 7(C) of the Williamson County Subsurface Sewage Disposal Regulations (linked on the Sewage Disposal page as 'Regulations 8-18-2026') states that 'All qualifying commercial/non-residential facilities, that meet the criteria as outlined in this Section 36 utilizing a subsurface sewage disposal system, shall obtain a valid Operation Permit issued by the Department.' It therefore applies only to a business on septic that meets the Section 36 criteria, not to every commercial septic user. The permittee must follow the regulations' water conservation and best management practice requirements, and Section 36 requires an external grease interceptor tank in any commercial/non-residential use where food is prepared or served and plumbing fixtures are present. The Operation Permit must be renewed annually, with the renewal application received 30 days before the existing permit expires, and a new permit is needed before a new use occupies the facility. Contact Sewage Disposal Management at (615) 790-5751.
Contact
- Jurisdiction
- Williamson County
- Phone
- (615) 790-5751
Contact details are taken from the agency’s own site or its published fee schedule. Where we have not verified a phone number we leave it blank rather than guess.
Sources
Every fee and term above was read from one of these government pages on the date shown.
- Conventional / Alternative SSDS System Permit Fee JustificationWilliamson County Department of Sewage Disposal Management · primary source · retrieved 2026-10-08
- Sewage Disposal (regulations and fee justification links)Williamson County Department of Sewage Disposal Management · primary source · retrieved 2026-10-08
- Williamson County Subsurface Sewage Disposal Regulations (linked as 'Regulations 8-18-2026')Williamson County Board of Health · primary source · retrieved 2026-10-08
Other offices serving Williamson County
The full permit list for this jurisdiction
Industry permit lists that include this agency
- Restaurants in Williamson County
- Coffee shops in Williamson County
- Retail stores in Williamson County
- Salons and barbers in Williamson County
- Fitness studios in Williamson County
- Childcare centres in Williamson County
- Contractors and trades in Williamson County
- Auto repair shops in Williamson County
- Veterinary clinics in Williamson County
Tennessee jurisdictions
Commercial Compliance Hub publishes information, not legal advice. Requirements change — confirm anything you rely on with the issuing agency before you file.