Buying Land in Uvalde County, Texas

A dual water-authority county: EAA and UCUWCD on the same ground

Uvalde County's groundwater regulation is set up differently from almost anywhere else in Texas covered on this site: two separate, independently governed entities regulate groundwater within the same county, split by which aquifer a well actually draws from. The Edwards Aquifer Authority, created by the Texas Legislature in 1993 specifically to manage the Edwards (Balcones Fault Zone) Aquifer for the benefit of all its users, covers portions of eight counties running from Uvalde through part of Hays County, and it issues the permits and construction approvals for any well drawing from or passing through the Edwards Aquifer inside Uvalde County -- including registration requirements for exempt domestic wells (generally those pumping under 25,000 gallons per day for household use), which don't need a withdrawal permit but must still meet EAA's well-construction standards.

Everything else falls to the Uvalde County Underground Water Conservation District (UCUWCD), a separately governed local district that manages the county's other aquifers -- the Trinity Aquifer (which underlies the Edwards within the district's boundary), the Austin Chalk, the Buda Limestone, and the fluvial Leona Formation among them. UCUWCD's own rules specifically carve the Edwards Aquifer out of its jurisdiction, since that aquifer, though physically present within the district's mapped boundary, is regulated by EAA instead. Practically, this means the single most important water question for a specific Uvalde County parcel isn't just "which district covers this land" but "which aquifer will this well actually draw from" -- the answer determines whether EAA or UCUWCD (or, for a well drawing from more than one formation, potentially both) governs the permitting process. See the standalone well-water page for a closer look at how this split plays out in practice.

Recent drought restrictions are a real, documented operating condition

This isn't a hypothetical regulatory risk: the Edwards Aquifer Authority placed the Uvalde Pool of the aquifer under Critical Period Management starting with Stage 4 in mid-2022, and conditions worsened enough by 2024-2025 that EAA escalated to Stage 5 -- its single most restrictive pumping-reduction stage, reached for the first time in the authority's history -- before conditions improved enough to ease back down through the stages and finally lift all restrictions on August 11, 2026 (CORRECTED 2026-09, superseding an earlier framing that misdated the lift at 2025 and flattened this multi-stage, multi-year escalation into a single unchanging Stage 4 period). For roughly four years, Edwards Aquifer permit holders in the Uvalde Pool operated under mandated pumping cutbacks tied to aquifer levels and spring flow at Comal and San Marcos Springs downstream. A buyer relying on a specific Edwards-well production volume for irrigation, livestock, or a specific use should ask EAA directly about current Critical Period Management status and what percentage cutback would apply under the next drought stage, rather than assuming full permitted volume will always be available -- as this recent, multi-year period demonstrates it may not be.

Septic, recharge-zone review, and appraisal

Because Uvalde County includes land on the Edwards Aquifer's mapped recharge, transition, and contributing zones, construction there is also subject to TCEQ's separate Edwards Aquifer Protection Program under 30 TAC Chapter 213, which requires its own plan review and approval before building -- including, in some cases, before a septic system can be installed -- on top of whatever county or TCEQ regional septic permitting otherwise applies. This is a genuinely separate TCEQ program from either the EAA or UCUWCD water-district structure described above, and a specific parcel's zone status should be confirmed directly with TCEQ's San Antonio regional office before budgeting a construction timeline.

On the tax side, Uvalde County has a significant agricultural, ranching, and hunting-lease economy, and a meaningful share of privately held acreage likely carries an agricultural or wildlife-management valuation with the Uvalde County Appraisal District rather than full market-value taxation. As elsewhere in Texas, that valuation generally requires a documented history of qualifying use and does not automatically transfer to a new owner without confirmation, and a change to non-qualifying use can trigger a rollback tax. Confirm current documentation requirements directly with the appraisal district before assuming a seller's existing exemption will simply carry over.