Texas Water Well Depth & Drilling Cost Guide
Authoritative hydrogeological intelligence for Texas. Regulated by the Texas Water Development Board (TWDB) & Groundwater Conservation Districts (GCDs). The statewide median drilling depth is 340 feet (ranging 80–950 ft) with an average drilling cost of $45 per foot ($30 to $85/ft).
Quick Hydrogeological Fact Sheet: Texas
To reach potable water in Texas, residential wells require drilling an average of 340 feet deep. Total turnkey installation costs average $17,800 USD for a completed 6-inch casing well, 1.5 HP submersible pump, pressure tank, and state permits. The standing static water table sits at approximately 95 feet below surface level, producing a reliable average flow rate of 24 GPM across the primary Edwards (Balcones Fault Zone).
Texas County-Level Well Logs & Average Depths
Official USGS hydrogeological monitoring stations, static levels, and driller completion records.
| County Name | Median Depth (ft) | Avg Cost / Foot | Typical Yield | Primary Aquifer | Local Action |
|---|---|---|---|---|---|
| Bexar County (San Antonio) | 360 ft | $46 /ft | 30 GPM | Edwards Limestone |
|
| Travis County (Austin) | 380 ft | $48 /ft | 20 GPM | Trinity Aquifer |
|
| Kerr County (Hill Country) | 480 ft | $54 /ft | 15 GPM | Cow Creek / Hensell Trinity |
💰 Estimated Turnkey Cost Itemization in Texas
Component-by-component breakdown for a standard residential water well (340 ft average).
| System Component | Specification in Texas | Unit Cost | Estimated Subtotal |
|---|---|---|---|
| Borehole Drilling & Sanitary Casing | 340 ft depth with standard 6" PVC/Steel Casing & Drive Shoe | $45 /ft | $15,300 USD |
| Submersible Pump & Drop Pipe | 1.0 HP – 1.5 HP Stainless Submersible Pump with 12-gauge electrical drop cable | Turnkey Pump Unit | $2,250 USD |
| Pressure Tank & Control Switch | 40-gallon Captive Air Pressure Tank, 40/60 PSI Pressure Switch & Gauge | Standard Assembly | $1,200 USD |
| State Permits, Sanitary Grouting & Lab Water Testing | Mandatory Texas Water Development Board (TWDB) & Groundwater Conservation Districts (GCDs) permit, bentonite surface seal, and EPA drinking panel | State Fee + Lab | $600 USD |
| TOTAL ESTIMATED TURNKEY INVESTMENT | Includes excavation, drilling, plumbing hookup, and water inspection | $17,800 USD | |
Texas Aquifers & Subsurface Geology
Karst limestone in Hill Country; sand/gravel in High Plains; sand/clay on Gulf Coast
Water Quality & Recommended Filtration
⚖️ Texas Well Drilling Regulations & Legal Setbacks
Calculate Drilling Cost in Texas
Pre-loaded with Texas median depth (340 ft) and average cost ($45/ft).
Frequently Asked Questions: Drilling Wells in Texas
1. How deep do you usually have to drill for water in Texas?
Across Texas, the median residential water well is drilled to 340 feet. However, shallow alluvial wells can hit water as high as 80 feet, while deep bedrock or limestone aquifer wells may require drilling down to 950 feet to reach sufficient pressure and yield.
2. How much does a complete water well cost in Texas?
On average, homeowners in Texas invest $17,800 USD for a complete turnkey system. Drilling alone costs $45 per foot (ranging $30–$85/ft), while submersible pumps, pressure tanks, state permit fees ($150), and electrical hookups comprise the remaining balance.
3. What is the required setback from septic tanks in Texas?
State health mandates overseen by the Texas Water Development Board (TWDB) & Groundwater Conservation Districts (GCDs) require a minimum separation distance of 100 feet from any septic tank, leach field, or potential contamination source, plus at least 50 feet from adjacent property boundaries.
4. What is the groundwater quality like in Texas?
Wells in Texas typically yield water with a hardness reading around 290 PPM and an average pH of 7.8. Key minerals present in natural groundwater include Very High Calcium/Magnesium, TDS, Fluoride, Sulfur. The recommended standard filtration configuration is: Twin-Tank Softener + Reverse Osmosis System.
🗺️ Neighboring & Regional Groundwater Guides
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