Hernando County / the namesake springshed (verify your parcel)
Septic service in Weeki Wachee, Florida
Weeki Wachee is the spring that gives Hernando County its septic rules and its postcard: a first-magnitude vent feeding the Weeki Wachee River, one of the deepest documented spring systems in the country, with a city around it so small it is mostly park. The name on your mail is a different thing from the city line, though. Weeki Wachee addresses fan out across unincorporated Hernando County and into Spring Hill, and it is those thousands of surrounding septic parcels, not the handful inside the city, that the springshed's nitrogen rules were written for.
The springshed is the point
Florida DEP's Weeki Wachee plan, replaced in June 2025 and now in effect, counts roughly 42,952 known and likely septic systems in the plan area, about 37,239 of them inside the Priority Focus Area, attributes 49 percent of pollutant loading to groundwater to those systems, and draws that PFA across the lowlands around the spring. Per the DOH-Hernando notice of 2025-10-10, repair and modification permits filed since 2025-12-15 on PFA parcels must include an enhanced nitrogen-reducing design. The framework lives in the springs septic mandate guide; the technology and cost detail in the ENR upgrade page.
Addresses versus parcels, the honest map
Because "Weeki Wachee" the mailing address covers far more ground than the city, the only reliable way to know whether the mandate reaches your project is the parcel check: the Florida DEP's PFA mapping or a call to DOH-Hernando at (352) 540-6812. The ENR self-check guide walks it step by step. Most residential projects under a Weeki Wachee address are functionally Spring Hill projects, and the Spring Hill page carries the detail that matters there, including the septic-to-sewer project areas and the five-year sewer waiver worth asking about before any replacement.
Close to the vent, closer to the rules
Parcels genuinely near the spring and river sit low, wet, and squarely inside the springshed's most sensitive ground. Projects there, from a drainfield replacement on a river-adjacent lot to a new build on acreage off Cortez Boulevard, get the county's closest evaluation scrutiny, and engineered designs are the norm rather than the exception. The permit runs through DOH-Hernando's Spring Hill office; the county-wide picture, published fees included, is on the Hernando County page.
Verify Your Septic Contractor's Florida Registration and Permits
Septic work in Florida is performed by a state-registered septic tank contractor. Registration runs under Chapter 489, Part III, Florida Statutes and has been administered by the Florida Department of Environmental Protection since the Onsite Sewage Program moved there from the Department of Health on July 1, 2021 under the Clean Waterways Act. The registered tier requires three years of experience, demonstrated by 6,000 hours, and a 100-question state exam passed at 75 percent or better; registrations renew annually by September 30. A septic business normally also holds its own Certificate of Authorization, though a registered contractor trading under their own given name as a sole proprietor is exempt from that certificate. Details: Florida DEP septic tank contractor registration and the exam and experience rules in DEP's Septic Tank Contractor Registration Handbook.
Registration comes in two tiers, and the difference decides who can do what. Section 489.551, Florida Statutes puts installing, maintaining, repairing and altering a system, plus site evaluations for repairs, in a registered septic tank contractor's scope, while designing a system, performing and submitting a soil evaluation, and closing repairs sit with a master septic tank contractor. Ask which tier the person quoting your job holds, and who is signing the design.
The construction permit is separate from the contractor's registration. In Citrus and Hernando counties the county health department issues the onsite sewage construction permit and performs the site and soil evaluation: Florida Department of Health in Citrus County, Environmental Public Health, (352) 513-6100, and Florida Department of Health in Hernando County, Environmental Public Health, (352) 540-6812.
Where a parcel sits inside a spring Priority Focus Area, a repair or modification permit application filed on or after December 15, 2025 must include an enhanced nitrogen-reducing (ENR) system design, per the DOH-Citrus (2025-10-09) and DOH-Hernando (2025-10-10) notices. An ENR system is one approved for at least 65 percent total nitrogen reduction (or at least 50 percent before the drainfield), per section 381.0065, Florida Statutes.
Check the record yourself
- Look up an individual's registration or a business's authorization in the Florida DEP registration search tools.
- Confirm permit requirements for your parcel with your county health department office at the numbers above.
Three questions worth asking any contractor
- What name is your Florida septic tank contractor registration under, and can I verify it in the DEP search?
- Will you pull the county health department construction permit before work starts, and is the permit fee in your written estimate?
- If my parcel is inside a Priority Focus Area, which ENR technology are you quoting, and what does its maintenance contract cost per year?
Springs Coast Septic is a referral service, holds no contractor registration, and performs no septic work. The registration and permit obligations described here belong to the independent licensed contractor who does the work.
Frequently Asked Questions
- Does anyone actually live in Weeki Wachee?
- Very few people; the city itself is one of Florida's smallest by population, wrapped around the spring and the state park. The septic homes people mean when they say Weeki Wachee are mostly in surrounding Hernando County communities, Spring Hill first among them, and those parcels are exactly the ones the Weeki Wachee springshed rules reach.
- What is special about the spring itself?
- Weeki Wachee is a first-magnitude spring, one of the deepest documented spring systems in the country, and the source of the Weeki Wachee River. It is nitrogen-impaired, which is why the Florida DEP adopted a Basin Management Action Plan in 2018 with a Priority Focus Area over the surrounding springshed, replaced by a new plan in June 2025 that is the one now in effect.
- My address says Weeki Wachee but I am east of US 19. Am I in the PFA?
- Possibly; postal addresses and PFA boundaries are different maps. Weeki Wachee mailing addresses spread far beyond the city into Spring Hill and unincorporated Hernando County. The parcel-level check against the Florida DEP map, or a call to DOH-Hernando at (352) 540-6812, answers it for your actual lot.
- Who handles septic permits for Weeki Wachee addresses?
- The Florida Department of Health in Hernando County, Environmental Public Health, Spring Hill office, (352) 540-6812. Its DH 4015 permit instructions put the new-construction OSTDS permit at $350.00 and application and plan review at $100.00 (read 2026-07-18; confirm current amounts with the office).