What Texas landowners and buyers need to know about surface water, groundwater, permits, and the legal rules that shape property ownership. Updated January 2026.

The Ins and Outs of Water Rights in Texas

Water is one of Texas’s most valuable resources. It supports our homes, farms, ranches, businesses, and wildlife habitats, and it plays a major role in land value across the state. Because water access and usage can lead to legal disputes, it is important for land buyers and property owners to understand how Texas water rights work and which agencies regulate them.

Texas law divides water into major legal categories, each governed by different rules. The two most important classifications for landowners are surface water and groundwater.

Surface Water

Surface water includes rivers, streams, lakes, and other naturally occurring bodies of water. Under Texas law, surface water is owned by the state and is regulated through a permitting system administered by the Texas Commission on Environmental Quality (TCEQ). In most cases, using surface water for irrigation, livestock, industrial, or large-scale domestic purposes requires a permit from the state.

Riparian and Prior Appropriation Doctrines

Texas water law is based on a combination of two historical legal doctrines.

The Riparian Doctrine originally tied water rights to land ownership along rivers or streams. Landowners could use the water as long as the use was reasonable and did not interfere with other landowners along the same water source.

The Prior Appropriation Doctrine, developed in the drier western states, is based on the principle of “first in time, first in right.” Under this doctrine, water rights are not tied to land ownership but to the first person to put the water to beneficial use.

These two doctrines were combined under the Water Rights Adjudication Act of 1967. This law required anyone claiming riparian rights to file those claims by 1969 and placed surface water use under state regulation. Today, most surface water use in Texas requires a permit from the TCEQ.

State Permitting and Regulation

The TCEQ oversees surface water rights and permitting across Texas. Permits specify how much water may be used, for what purpose, and from what source. In some river basins, watermasters also help administer and enforce these rights.

Landowners can find official information about surface water rights, permits, and applications on the Texas Commission on Environmental Quality website at:
https://www.tceq.texas.gov/permitting/water_rights

Drainage Water and Diffused Surface Water

Drainage water, sometimes called diffused surface water, refers to rainfall or runoff that has not yet reached a defined creek, river, or stream channel. Texas law applies several legal principles to how landowners can handle this water.

Under the Common Enemy Rule, landowners may take steps to protect their property from drainage water without regard to the impact on neighboring properties.

Under the Natural Flow Rule, landowners may not alter the natural flow of water in a way that unreasonably damages downstream properties.

Under the Reasonable Use Rule, a landowner may divert or manage drainage water even if it affects another property, as long as the action is considered reasonable under the circumstances.

These rules are often applied in disputes involving flooding, drainage improvements, or changes to the natural flow of stormwater across property lines.

Groundwater

Texas groundwater law differs significantly from surface water law. Groundwater is water found beneath the Earth’s surface in aquifers. In Texas, groundwater is generally considered the private property of the landowner.

Rule of Capture

Texas follows the Rule of Capture. Under this rule, a landowner may pump as much groundwater as they can beneficially use from beneath their land, even if that pumping affects neighboring wells. This principle is codified in the Texas Water Code.

However, there are important limits. Courts may intervene in certain situations, including:

If someone trespasses by drilling a well that crosses property lines
If pumping is done with malicious or intentional harm to a neighbor
If water is being wasted, such as allowing artesian wells to flow unchecked
If groundwater is being polluted or contaminated
If pumping causes land subsidence or physical damage to neighboring property

Groundwater Conservation Districts

While the Rule of Capture still exists, much of Texas is now covered by Groundwater Conservation Districts. These districts are local governmental entities that can regulate well spacing, drilling permits, and pumping limits. If a property is located within a district, the landowner must follow that district’s rules.

Information about groundwater, wells, and conservation districts can be found at the Texas Water Development Board website:
https://www.twdb.texas.gov/groundwater

Well Registration

In most parts of Texas, private water wells do not need to be registered with the state. However, if the property is located within a Groundwater Conservation District, that district may require permits or registration before drilling or operating a well.

Recent Legal and Regulatory Trends

Texas water law continues to evolve amid population growth, drought, and increasing competition for water resources. Groundwater districts are becoming more active in regulating pumping, and surface water permitting continues to play a critical role in protecting rivers, streams, and downstream users.

Because rules and local regulations can change, buyers should always verify water rights, well rules, and permitting requirements before purchasing land.

Helpful Official Resources

Texas Commission on Environmental Quality Water Rights Program
https://www.tceq.texas.gov/permitting/water_rights

Texas Water Development Board Groundwater Information
https://www.twdb.texas.gov/groundwater

Texas Water Code (Chapters 11 and 36)
https://statutes.capitol.texas.gov

Final Thoughts for Land Buyers

Water access is one of the most important factors in the value and usability of Texas land. Whether you are buying a ranch, farmland, recreational property, or rural homestead, understanding both surface water and groundwater rules is critical to making a smart investment.

At Preferred Properties of Texas, our team works hard to stay informed on changing regulations, water rights issues, and local district rules so we can guide our clients with confidence. We believe that great real estate advice goes beyond property lines and square footage. It includes understanding the legal and practical details that protect your investment and your future use of the land.

If you are considering buying land in Texas, let the team at Preferred Properties of Texas help you navigate the process and make sure your property has access to one of life’s most valuable resources: water.