Water Rights in Texas: What Every Wilson County Land Buyer Needs to Understand
Of all the topics that catch Wilson County land buyers off guard, water rights in Texas may be the most consequential — and the least understood.
Most buyers who've purchased property in other states assume that buying land in Texas means owning everything associated with it, including rights to the water beneath and on the surface. That assumption is partly correct — and partly, critically wrong. Texas water law is unique in the country, and the distinctions it draws between different types of water rights have real implications for how Wilson County land buyers can use, develop, and protect their water supply.
James Peterson, ALC is the broker-owner of United Country Real Estate | Texas Ranch and Home in Floresville, Texas. He has spent over 30 years helping buyers evaluate Wilson County land — including the water rights and water access questions that every rural property transaction requires. He lives here. He works here. And he addresses water specifically on every land transaction he handles.
This guide provides the foundational understanding every Wilson County land buyer should have before making an offer.
The Two Types of Water in Texas — and Two Very Different Legal Frameworks
Texas divides water into two fundamentally different categories, each governed by different legal principles.
Groundwater — water beneath the surface of the land, accessed through wells.
Surface water — water in rivers, streams, lakes, and other bodies of water on or flowing across the surface of the land.
These two categories are governed by almost completely opposite legal frameworks. Understanding both is essential for rural Wilson County buyers.
Groundwater in Texas: The Rule of Capture
Texas groundwater law is based on the Rule of Capture — one of the most distinctive and consequential legal doctrines in Texas water law.
Under the Rule of Capture, a landowner has the right to drill a well on their property and capture as much groundwater as they can beneficially use — with limited liability to neighboring landowners whose wells may be depleted as a result.
In its simplest form: if you own land in Texas, you own the groundwater beneath it, and you can pump it without compensating neighboring landowners for the depletion of their water supply.
This doctrine has profound practical implications:
You can pump your well as aggressively as you want — for irrigation, livestock, domestic use, or any other beneficial use — without legal liability to neighbors whose wells are affected.
Your neighbor can pump their well aggressively — potentially depleting the aquifer beneath your property — with limited legal recourse available to you.
The rule is not absolute. Texas has modified the Rule of Capture in important ways through groundwater conservation districts (see below), specific statutes addressing malicious conduct, and limits on certain types of extreme groundwater pumping.
What this means for Wilson County buyers: You have the right to access groundwater beneath your property — but you are not legally guaranteed that water will remain available in perpetuity, particularly in areas with heavy agricultural pumping or active development. Aquifer levels in parts of Texas have declined significantly due to heavy pumping under the Rule of Capture.
Groundwater Conservation Districts: The Modification of the Rule of Capture
The Texas Legislature recognized that unregulated Rule of Capture pumping could deplete aquifers entirely — and established a system of Groundwater Conservation Districts (GCDs) to regulate groundwater production in areas where conservation is necessary.
GCDs are local governmental entities with the authority to:
Require permits for wells above certain production thresholds
Set production limits on individual wells
Regulate spacing between wells
Manage aquifer levels through district-wide pumping restrictions
Wilson County and the relevant aquifer:
Wilson County sits over portions of several aquifer systems. The Carrizo-Wilcox Aquifer is one of the most significant groundwater resources in South and East Texas, underlying parts of Wilson County and providing water for both domestic and agricultural use.
Groundwater production in Wilson County is subject to regulation by the applicable groundwater conservation district for the area. Before purchasing any Wilson County land where groundwater production is critical to your intended use — irrigation, livestock operations, or large-scale domestic supply — confirm:
Which groundwater conservation district governs the property
What permit requirements apply to new wells or increased production
What the current aquifer status and production trends are in that part of the county
For most domestic and livestock uses on Wilson County rural property, standard well drilling and production do not require district permits. Large-scale agricultural irrigation is a different matter.
Surface Water in Texas: Prior Appropriation and State Ownership
Texas takes almost the opposite approach to surface water as it does to groundwater.
Surface water in Texas belongs to the state. Rivers, streams, creeks, and lakes that are part of the natural surface water system are owned by the State of Texas — not by the landowners whose property they cross or border.
Landowners who want to use surface water — for irrigation, stock ponds, or other purposes — must hold a water right issued by the Texas Commission on Environmental Quality (TCEQ). Texas surface water rights operate under the Prior Appropriation Doctrine — the principle of "first in time, first in right." Earlier appropriators have priority over later ones during periods of shortage.
The San Antonio River: The San Antonio River, which runs through western Wilson County, is a state water body. Landowners with river frontage do not automatically have the right to divert or use river water for irrigation or other purposes without a state water right. Navigation rights and recreational use of navigable waterways are subject to public access provisions under Texas law.
Stock tanks (ponds): This is where surface water law gets nuanced for Wilson County landowners.
Stock tanks — the artificial ponds that are a ubiquitous feature of South Texas rural property — fall into a gray area of Texas water law. Texas water code Section 11.142 allows landowners to impound or divert state water for certain limited purposes without a permit, including:
Domestic and livestock purposes from streams that are not fully appropriated
Small reservoirs (generally under 200 acre-feet capacity) for domestic and livestock use
Most Wilson County stock tanks used for livestock watering fall within these exemptions. But it's important to understand that even these uses draw on surface water that technically belongs to the state — and that the exemptions have limits.
Rainfall and runoff: Water that falls as rain on your property and runs off your land into a creek or drainage is surface water — and technically belongs to the state once it enters a natural watercourse. Water captured directly from rainfall before it enters a natural watercourse — through roof catchment systems or on-property retention — falls under different rules.
What the Distinction Means for Wilson County Land Buyers
For most buyers purchasing Wilson County rural property for residential, livestock, and small-scale agricultural use, the groundwater and surface water frameworks work practically as follows:
Your well is your primary domestic and livestock water source. As a groundwater resource accessed through a private well, your water supply is governed by the Rule of Capture and applicable groundwater conservation district rules. For typical residential and livestock use, this means you can use your well water freely for domestic, livestock, and garden purposes.
Your stock tank is a practical livestock water resource. Stock tanks on Wilson County properties that are used for livestock watering fall within the exemptions in Texas water law that don't require a state water right. Most Wilson County stock tanks in standard agricultural use are permissible without a TCEQ water right.
The San Antonio River is state property. If you're buying Wilson County property with San Antonio River frontage, you have the right to enjoy the river as a landowner — fishing, kayaking, accessing the water — but you do not have the automatic right to divert river water for irrigation without a state water right.
Irrigation from wells requires attention to groundwater district rules. If you're planning a significant irrigation operation on Wilson County land — pumping large volumes of groundwater for crop or pasture irrigation — verify the permit requirements with the applicable groundwater conservation district before purchasing.
The Edwards Aquifer: Why It Matters Even Outside the Recharge Zone
The Edwards Aquifer is one of the most heavily regulated groundwater resources in Texas — and while Wilson County is generally outside the Edwards Aquifer Authority's primary jurisdiction, buyers in the northern and western parts of Wilson County near the Bexar County line should be aware of the aquifer's relevance.
The Edwards Aquifer supplies a significant portion of San Antonio's municipal water and is strictly regulated by the Edwards Aquifer Authority (EAA) — a groundwater conservation district with permit requirements, production caps, and drought contingency restrictions that are among the most rigorous in Texas.
Properties in the Edwards Aquifer recharge zone have specific development restrictions designed to protect recharge quality. While most of Wilson County is not in the Edwards recharge zone, buyers purchasing land in the northern portions of the county near the Balcones Escarpment should confirm their property's relationship to any Edwards-related regulations.
Evaluating Water Resources When Buying Wilson County Land
When James Peterson evaluates any Wilson County land property with a buyer, water assessment is one of the first and most important items on the due diligence checklist:
Well yield and water quality test. What does the well produce? Is the water quality acceptable for intended use? These answers require testing — not visual inspection.
Stock tank condition and reliability. Is the tank full? When did it last go dry? What feeds it — surface drainage, a spring, or well water? In drought conditions, how reliable is the tank?
Irrigation history and groundwater district status. Has the property been used for irrigation? Are there any existing groundwater production permits or restrictions? Is the property in a groundwater conservation district with permit requirements that apply to the intended use?
Surface water features and legal status. Are there any creeks, seasonal drainages, or river features on the property? What are the practical and legal constraints on using them?
Floodplain. Is any part of the property in a FEMA-mapped flood zone? Flood zone mapping relates to surface water — rivers and drainages that overflow during flood events — and affects insurance, financing, and what can be built in specific areas.
Frequently Asked Questions About Water Rights in Wilson County
Can my neighbor drill a well and deplete my water supply without liability? Under the Rule of Capture, generally yes — with limited exceptions. This is one of the most distinctive and sometimes unsettling aspects of Texas water law for buyers from other states. Groundwater conservation districts provide some protection through permit requirements and production limits, but the fundamental doctrine allows competitive pumping.
Do I own the water in my stock tank? You own the tank and the land beneath it. The water that fills it from rainfall and surface runoff is technically state water — but your use of it for livestock and domestic purposes is generally permitted without a water right under Texas water law exemptions.
If I buy riverfront property on the San Antonio River, can I irrigate from the river? Not without a state water right from TCEQ. River water belongs to the state. Irrigation from the river requires a valid appropriative water right, which must be acquired through the state permitting process.
What groundwater conservation district covers Wilson County? Groundwater conservation district jurisdiction varies by location within Wilson County. Contact the Texas Water Development Board (twdb.texas.gov) or the applicable district directly to confirm jurisdiction and permit requirements for any specific property.
Can I sell my water rights separately from the land in Texas? Groundwater rights in Texas are tied to surface ownership under current law — you generally cannot sever and separately sell groundwater rights the way mineral rights can be severed. Surface water rights (TCEQ appropriative rights) can be transferred separately.
Water Is the Foundation of Wilson County Land Value
James Peterson, ALC Broker/Owner — United Country Real Estate | Texas Ranch and Home Floresville, TX 78114
📞 James: 210-740-1295 🌐 www.txranchandhome.com 📅 Schedule a Free Land Consultation with James
We live here. We work here. Water is the foundation of everything we know about South Texas land.
James Peterson, ALC is broker-owner of United Country Real Estate | Texas Ranch and Home in Floresville, Texas. He specializes in land, ranch, and agricultural real estate across Wilson County and South Texas. This blog is for general informational purposes only and does not constitute legal advice. Consult a licensed Texas water law attorney for guidance specific to your transaction and intended water use.
