What happens if you write an offer on ten acres west of Dripping Springs, tell your agent the well is "not a big deal, we'll drill after closing," and then find out the agency that approves new wells isn't accepting new well permits right now?
That scenario is not hypothetical. It is the exact position the Hays Trinity Groundwater Conservation District has put buyers in this year. The district that oversees new wells across western Hays County, including most of Driftwood and unincorporated Dripping Springs, is currently in Emergency Drought Stage. Its own homepage puts it plainly: water wells are failing at an unprecedented rate, and the district is not accepting new permits for production or non-exempt well construction until conditions improve.
That single fact changes the math on almost every acreage listing in this market. The sticker price on ten or twenty acres tells you what the land costs. It does not tell you what it costs to get water out of the ground or wastewater into it, and this year those two costs are moving in a direction most buyers do not expect.
The Well Isn't a Formality Anymore
Under normal conditions, drilling a household well in this part of Hays County is mostly paperwork. You file a Well Construction Notification with the district, pay the fee, submit a site map, and once you have your Well Construction Notification Confirmation, a licensed driller can start. That confirmation is required for every well in the district, exempt or not, before drilling begins.
The district's drought rules complicate what happens next. Under Rule 13.3.3, the board suspended new operating permit applications, permit amendment applications requesting more water, and new well construction notifications for non-exempt wells for the duration of Stage 3 (Critical) or Stage 4 (Emergency) drought. The district is currently at Emergency Stage, with a mandatory 40 percent curtailment district-wide and a 30 percent curtailment inside the Jacob's Well Groundwater Management Zone, the roughly 39-square-mile area where drought triggers are set by flow at Jacob's Well itself.
For a straightforward single-family household well, that mostly means the filing process still moves, but you are drilling into an aquifer the district itself describes as failing at an unprecedented rate. For anything larger than that, an irrigation well, a well meant to serve a guest house or additional structure, a higher-capacity well tied to any commercial or event use, the picture changes. Those uses tend to fall outside the household exemption, and the district is not currently accepting new applications for them at all.
That distinction matters more in Dripping Springs than almost anywhere else in Central Texas. This is a market where wedding venues, tasting rooms, and working acreage sit next to residential lots, and where a buyer's plans for a barn, a casita, or a second dwelling can quietly cross the line from exempt to non-exempt use. Before you assume a well solves your water question, know which side of that line your intended use falls on, and know that the district's own climate data gives this drought less than a 6.5 percent chance of ending within six months, based on the roughly 26 inches of rain it would take to reverse it.
The Septic Bill the Bedrock Writes for You
Water is only half the ground-level math. Dripping Springs and Driftwood have no shared municipal sewer system across most of their footprint, which means septic is not a preference here, it is the only option for the vast majority of properties.
What most buyers underestimate is what that septic system will actually cost. A February 2026 survey of Hays County area septic providers put alternative system installation, the aerobic units, drip irrigation, and spray fields required across most of this market, at $15,000 to $30,000 installed. Conventional gravity systems, the kind that cost $6,000 to $8,000 in flatter parts of Texas, are rarely an option here at all.
The reason is underfoot. Edwards Plateau limestone bedrock sits just 6 to 18 inches below the surface on most Dripping Springs properties, and the same fractured limestone shelf runs under much of neighboring Driftwood. Conventional drain fields need several feet of permeable soil to filter wastewater before it reaches groundwater. With less than two feet of topsoil over fractured limestone, there is no natural filtration layer left to work with, which is why county permitting data shows the vast majority of new permits in western Hays County go to alternative systems rather than conventional ones.
Here is what that price gap actually looks like when you break it down:
| System type | Typical installed cost | Where it applies |
|---|---|---|
| Conventional gravity system | $6,000 to $8,000 | Flatter Texas terrain with deeper soil |
| Aerobic treatment unit with spray field | $12,000 to $18,000 | Most Dripping Springs and Driftwood lots |
| Excavation through limestone | Add $2,000 to $4,500 | Properties with shallow bedrock |
| Site evaluation, permits, engineering | Add $1,500 to $3,000 | Required for most alternative system permits |
There is no acreage exemption from any of this. Hays County requires an On-Site Sewage Facility permit for every septic system regardless of lot size, even on a 20-acre estate. The county also requires a two-year initial maintenance contract with a licensed provider at the time of permitting. After that period, homeowners can complete an approved course through Plum Creek Watershed and self-maintain, though most owners of alternative systems out here keep a professional contract because these systems are more mechanically involved than a basic aerobic unit on flat ground.
If you are comparing two similarly priced acreage listings in Driftwood, one on 10 acres of thin-soil terrain and one on 10 acres where a previous owner already engineered and permitted an alternative system, the second one is worth more than the sale price suggests. The engineering is already paid for.
The Infrastructure Around You Is Under the Same Strain
The ground beneath a given lot is not the only signal worth reading this year. The systems around it are showing the same pressure.
In March 2026, the City of Dripping Springs issued a boil water notice to customers in the Cannon Ranch and Driftwood Golf and Ranch communities after the Texas Commission on Environmental Quality flagged conditions in the wholesale water system. The notice was rescinded once lab results confirmed the water no longer required boiling, but it is a real data point about how tightly the regional water supply is running.
Two months later, the City of Dripping Springs approved wastewater rate increases that will show up on residential bills starting in September, adding an estimated $20 to $30 a month for most customers. The city says the increase reflects rising infrastructure costs and has applied for $51.5 million in additional funding through the Texas Water Development Board to keep up with growth. None of this is a crisis. It is a pattern, and the pattern says the region's water and wastewater systems are being asked to do more with the same footprint, at the same time the groundwater district is telling residents wells are failing at rates it has not seen before.
What This Actually Means Before You Write an Offer
None of this should scare a buyer off Dripping Springs or Driftwood. Both remain places where five, ten, or fifty acres can still be had for meaningfully less than a comparable lot closer to town, and the Hill Country setting is the reason people move out here in the first place. It should change what you ask for before you waive contingencies.
Ask the seller for the well's existing permit and production history, not just its age. Ask whether the septic system is conventional or alternative, and ask to see the permit and the current maintenance contract, since both transfer with the property and both tell you what you are actually inheriting. If your plans include a second structure, a guest house, or anything beyond ordinary household use, confirm now whether that use is treated as exempt or non-exempt under district rules, because non-exempt applications are not being accepted at all while the drought stage holds. And build the true cost of a septic system, not the conventional-system number you might see in a general homebuying guide, into your offer math from the start.
A Few Questions Buyers Ask Us Directly
Can I still drill a household well in Dripping Springs or Driftwood right now? In most cases, yes. Standard single-family domestic wells are generally treated as exempt use, so the filing process still moves. Every well still needs a Well Construction Notification Confirmation before drilling starts, and the district's own data shows wells failing at higher rates during this drought, so a permitted well is not the same as a guaranteed reliable one.
Does a large lot get me out of needing a septic permit? No. Hays County requires an OSSF permit for every septic system regardless of acreage, with no minimum lot-size exemption.
Is there a difference between buying inside Dripping Springs city limits and out in Driftwood? Yes. Incorporated parts of Dripping Springs have access to city water and sewer in some areas, while most of Driftwood is unincorporated Hays County, where well and septic due diligence applies to essentially every property.
If you are weighing acreage in Dripping Springs or Driftwood and want someone who will walk the well and septic questions with you before you write an offer, not after, Austin Home Girls Realty can help you find your Austin home with that groundwork already done.
