Finding the water is only the beginning of building a dependable supply
A groundwater aquifer may seem like the answer to a water supply problem. Yet even a promising source might require extensive evaluation and infrastructure before a community can rely on it.
The practical question reaches beyond who owns the water: Can the aquifer produce enough water to be reliable 20 or 30 years from now? Groundwater rules, aquifer conditions, water quality, treatment needs, and future demand all shape the answer.
In This Article
Water Availability Has Become a Growth Decision
The reliability of a water supply can determine whether a community can support new housing, businesses, and public services. Texas water planning illustrates the scale of this challenge. Under drought-of-record conditions, water users could potentially face shortages of 3.6 million acre-feet per year in 2030, and 5.8 million acre-feet in 2080.
Finding water does not establish a dependable supply. Planners must determine how much a source can produce over time, whether regulations allow the withdrawals, what treatment the water requires, and whether the resulting supply is affordable.
Ownership Does Not Settle the Supply Question
Texas generally recognizes landowner ownership of groundwater and historically has followed the rule of capture. Groundwater Conservation Districts, however, can regulate non-exempt wells through permits and conservation rules. That means owning groundwater beneath a property within a groundwater conservation district boundary does not necessarily mean an entity can pump as much as it wants, for as long as it wants.
Desired Future Conditions (DFCs) add another planning dimension. Participating districts and regional water managers establish these goals for future aquifer conditions, which might address water levels, spring flows, or groundwater volumes. A DFC does not guarantee a permit or a particular well yield; instead, DFCs establish aquifer conditions that stakeholders are trying to preserve or achieve for the future reliability of the source.
Brackish Groundwater Can Expand the Portfolio
Brackish groundwater contains more total dissolved solids (TDS) than fresh water but less than seawater. Texas has substantial brackish resources, estimated at about 3.3 billion acre-feet, within a specified salinity range, but that figure does not represent recoverable supply. Aquifer productivity, source quality, well performance, and location determine how much water a project can dependably obtain.
Reverse osmosis (RO) filtration can make brackish water suitable for drinking, but technical feasibility alone does not establish project viability. Energy requirements, permitting timelines, infrastructure cost, well development, and concentrate management must all fit the community’s operating and financial capacity. Aquifer recharge also varies, so planners cannot treat a brackish aquifer formation as inherently renewable or drought-proof.
Before Treating the Water, Validate the Source
Before planning around a source, communities need a clear picture of how much water the aquifer and wells can provide and what volume limitations are established by the local groundwater rules.
Test wells can provide information about actual production volumes, while water quality testing helps determine what treatment will be necessary because, with brackish groundwater, TDS is only part of the equation. Well location and performance, permitting, concentrate disposal, and the infrastructure needed to treat and transport the water can all affect whether the source makes sense.
These questions are worth answering early. A source that looks promising on paper may be less practical once you consider production, treatment, infrastructure, and cost together.
Alice Turned a Difficult Source Into a Community Asset
Alice, Texas, shows how integrated planning can turn locally available brackish groundwater into dependable and affordable drinking water. The city had relied on surface water from Lake Corpus Christi and faced rising costs for imported water as widespread drought increased pressure on regional supplies.
Through Texas’ first brackish water public-private partnership, Alice gained a brackish groundwater reverse osmosis plant without a large upfront capital investment. Seven Seas operates and maintains the facility under a 15-year agreement with contracted water production and pricing terms. The arrangement lowered the city’s water prices both initially and over the long term.
Alice proves why identifying a water source is only the beginning. The city also had to align source development, treatment, financing, infrastructure, and ongoing operations to turn that resource into a practical water supply.
Plan a Portfolio
Long-term water planning rarely comes down to choosing a single source. Communities should consider how multiple supplies can work together as demand, drought conditions, regulations, and costs change.
The resulting portfolio might combine conventional supplies with brackish groundwater, conservation, and water reuse. Diversification can reduce dependence on a single source, but every component needs a defined role and realistic performance assumptions. Each source must also fit the community’s water treatment infrastructure, operating capabilities, and budget.
Keep the Strategy Adaptable
Infrastructure also needs to accommodate changes in where a community gets its water and how much it needs. Brackish groundwater desalination, water reuse, decentralized treatment, and phased capacity can give communities additional options as conventional supplies become constrained or demand changes.
Water reuse can further reduce pressure on potable supplies by treating wastewater for appropriate, nonpotable applications, such as irrigation or certain industrial uses. Instead of meeting every demand with drinking-quality water, communities can match water quality to its intended use and preserve higher-quality supplies for applications that require them.
Water-as-a-Service® (WaaS®) is Seven Seas’ service-based model that can align design, construction, financing, operations, and maintenance under one contract. For communities pursuing alternative water supplies without wanting to fund and manage an entire treatment project themselves, this model lets a community develop a new supply without funding the full treatment project upfront or taking on all the operating responsibility itself.
Texas communities planning for the next several decades need to consider water rights, aquifer conditions, regulation, treatment, infrastructure, financing, and future demand together, not as separate decisions.
Whether you are evaluating groundwater resources, planning a development, or exploring alternative supplies, contact Seven Seas to explore treatment and delivery strategies designed around long-term water reliability.
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