Texas
Buying Land in Milam County, Texas
Milam County -- Cameron, Rockdale, Thorndale, and Milano, east of Austin -- sits over one of the most contested aquifers in Texas. The Simsboro Aquifer beneath the county already supports a massive industrial permit and a pipeline exporting water to San Antonio, and that competition is worth understanding before you count on a well here.
Groundwater: the Simsboro Aquifer and its industrial-scale competition
Milam County's groundwater runs through the Post Oak Savannah Groundwater Conservation District, a district Milam shares jointly with Burleson County -- each county appoints half of the district's ten-member board. The district's core resource is the Simsboro Aquifer, a productive sand member of the larger Carrizo-Wilcox aquifer system, and its rules cover well spacing, contiguous-acreage requirements for larger permits, management zones, and per-acre production limits, with permits subject to review roughly every five years. What sets Milam County apart from most rural Texas counties with a groundwater district is the sheer scale of non-exempt demand already permitted against the same aquifer an ordinary landowner's well would tap: Alcoa holds a documented pumping permit for 45,000 acre-feet per year from the Simsboro Aquifer tied to its historic Rockdale-area operations, and the San Antonio Water System's Vista Ridge pipeline project is under a 30-year, roughly $3.4 billion contract to draw up to 50,000 acre-feet per year of Simsboro and Carrizo groundwater -- about three-quarters of it from Simsboro wells -- and pipe it 142 miles to serve over 200,000 households in San Antonio.
Vista Ridge's wells sit mainly in neighboring Burleson County, but the water comes from the same aquifer system the Post Oak Savannah district manages across both counties, and the project has drawn organized, ongoing local opposition from groups concerned about long-term aquifer drawdown. See the standalone well-water page for how the district's exempt-well process works for an individual household or ranch well, and what this level of competing industrial demand practically means for water-supply planning on a specific Milam County parcel.
Septic permitting and the local health department
On-site sewage facility (septic) permitting in Milam County runs through the Milam County Health Department, headquartered in Cameron with a presence in Rockdale as well. The department issues permits, conducts inspections, handles complaints, and -- notably -- requires that homeowners with an aerobic treatment system submit a signed maintenance contract to the permitting authority, placing an ongoing compliance obligation on the homeowner rather than treating the system as a one-time install-and-forget purchase. Confirm current fees, required site/soil evaluation steps, and the department's process for reviewing a proposed subdivision's septic plan directly with the department before budgeting a system, particularly given how much of the county's rural land is likely to depend on individual OSSFs rather than a municipal sewer connection.
Milam County, like the large majority of rural Texas counties, has no general zoning ordinance for its unincorporated area. Dividing land into a subdivision or new lots outside a city still requires a plat approved through the county's normal process, so confirm current platting requirements with the county directly for any tract you're considering splitting or buying as part of a larger division.
Who to Call Before Buying Land in Milam County
Milam County has no general zoning ordinance for its unincorporated area, consistent with the statewide default; contact Cameron, Rockdale, Thorndale, or Milano directly if a parcel sits inside that city's limits or ETJ.
Wells / Private Water
Post Oak Savannah Groundwater Conservation District
Well registration and permitting for a Milam County parcel, including exempt household/livestock wells and larger non-exempt permits.
Environmental Health
Milam County Health Department
On-site sewage facility (OSSF/septic) permitting, inspections, and aerobic system maintenance-contract requirements.
Assessor / Property Tax
Milam County Appraisal District
Assessed value, property tax, and agricultural (ag/wildlife) valuation questions for a specific parcel.
Recorder / Clerk / Land Records
Milam County Clerk
Recorded deeds, plats, water permits, and easements for a specific parcel.
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Get local guidanceTopics Specific to Milam County
Sources
- Homepage — Post Oak Savannah Groundwater Conservation District (accessed 2026-09)
- Summary of Rules and Management Strategies (PDF) — Post Oak Savannah Groundwater Conservation District (accessed 2026-09)
- Special District Local Laws Code Chapter 8865: Post Oak Savannah Groundwater Conservation District — Texas Legislature (accessed 2026-09)
- About This Project (Vista Ridge Pipeline) — San Antonio Water System (SAWS) (accessed 2026-09)
- San Antonio Wants Too Much of Our Groundwater — San Antonio Report (accessed 2026-09)
- Milam County, TX -- Septic System Permits — Milam County, Texas (accessed 2026-09)
Last reviewed 2026-09