Where does city sewer reach in Florence?
Inside the city, the Public Works Department looks after the sewer mains and the sewage lift stations. They carry wastewater to the treatment plant. The city covers less than one square mile of land. It counted 1,171 people in the 2020 Census, and the Census Bureau estimates 1,245 for 2025.
The 76527 ZIP code reaches well past town, with an estimated 4,918 people and 1,669 homes. The Census Bureau puts their median year built at 1999, so about half are more than 25 years old. TCEQ notes that a septic system more than 15 years old may need to be replaced. A septic inspection checks the tank and the drainfield and tells you what needs attention now.
Williamson County's subdivision map shows acreage plats around town. Chapel View is about 134 acres for 21 lots, and Florence Oaks Estates about 69 acres for 17. In a new subdivision on septic, Texas requires lots of at least half an acre when public water serves them. Without public water, the minimum is one acre.
What the ground around Florence means for a septic system
The USDA soil survey maps the center of Florence as Doss silty clay. It rates that soil very limited for a septic drainfield, because of shallow bedrock. Three miles out, it maps Denton silty clay north, south and west of town, and Fairlie clay to the east. Southeast and southwest of town, it maps Tinn clay, which the survey lists as frequently flooded.
At the town center and at eight points about three miles out, every soil rates very limited for a drainfield. Texas A and M AgriLife Extension says only nonstandard drain fields can be used in clay. On ground like this, the site evaluation often calls for an aerobic or other non-standard system. TCEQ's 2025 figures for Williamson County list 490 authorizations to build, and just 17 were standard trench or bed systems.
TCEQ's Edwards Aquifer map puts the center of Florence on the contributing zone, not the recharge zone. Recharge zone ground lies within about three miles east of the town center. On the recharge zone, a new septic system needs at least one acre per single family home. In Williamson County, a new system there gets its design from a professional engineer or registered sanitarian.
How often does a Florence septic tank need pumping?
TCEQ recommends pumping a conventional septic tank every three to five years. Measuring the sludge and scum layers gives the real answer to whether yours is due yet. State rules require owners to use a transporter registered with TCEQ to haul away tank contents. Bravo Septic is a TCEQ-registered sludge transporter, and we are licensed and insured.
Every pump-out starts with finding and opening the lids. If they are lost, septic tank locating starts at the sewer cleanout and probes from there. We pump every compartment, clean the effluent filter if there is one and check the baffles, inlet and outlet. You get photos from inside the tank and a plain report, and the lids get resealed.
Heavy clay passes water slowly, and AgriLife notes that a field saturated with rainwater cannot accept wastewater. If a drainfield around Florence stays wet or smells, drain field repair starts with the cause. Usually the tank is overdue, water use has outrun the field, or the field itself is failing. Septic tank risers bring buried lids up to grade, so the next pump-out starts at the surface.
Which office permits septic systems in Florence?
The Williamson County Engineer's Office permits septic systems in Florence. TCEQ's list of authorized agents shows that office for the entire county, with no separate city agent. Septic permit applications go to the county online only, through My Government Online. A new system's site evaluation needs at least two profile holes, five feet deep or down to solid rock.
A permit is required to replace a tank or to repair or replace a drainfield. Fixing a tank in place, like a new lid or outlet device, counts as an emergency repair with no permit. Septic repair like that still gets reported to the county within 72 hours of starting.
For a home sale around Florence, a real estate septic inspection is done with the tank pumped and seen empty. We pull the county OSSF permit record to show what is actually permitted on the property. That permit moves to the new owner automatically with the sale. The written report comes within 24 hours of the site visit, and repair quotes come on request.
Communities and areas we serve around Florence: Andice, Chapel View, Florence Oaks Estates, The Ranches at Salado Brook, Spring Creek Estates, Hidden Meadows of Florence, Vineyard at Florence, SH 195, FM 970, FM 487, RM 2338.
Florence ZIP codes served: 76527.