What drives the cost of a Texas water well
Depth, geology, casing, pump, pressure system and district fees: the factors that separate one drilling quote from another, and a checklist for comparing them.
Ask three Texas drillers what a water well costs and you may hear three very different answers. That is not because someone is padding. Water well pricing depends on things nobody can fully know until the drill turns: how deep the water is, what the rock is like, and how much water the formation gives. This guide explains the parts of a quote so you can compare like with like. We do not quote dollar figures here because they vary by region and year; use the factors below to build a fair comparison.
Depth and geology
Drilling is usually priced per foot, and the depth to a usable aquifer varies enormously across the state. Shallow alluvial wells along a river may be a few dozen feet. Wells in the Hill Country, the Trinity or Ogallala aquifers, or the deeper Gulf Coast aquifers can be hundreds of feet. Hard limestone or granite drills slower than clay and sand and wears bits faster, and formations that collapse need more casing or a different method. The State Well Reports on each profile page show the reported depth of recent domestic wells this driller has done, which is a better indicator for your county than a statewide average.
Casing and screen
Casing keeps the borehole open and keeps surface water out of the aquifer. The material (PVC or steel), diameter and length all change the price. State construction standards are in 16 Texas Administrative Code chapter 76, and your district may add its own. A properly cemented surface casing or annular seal protects your water and your neighbours', and it is not the line to cut.
Pump, motor and pressure system
A well is not finished until it can deliver water to a tap. The pump (submersible or jet), motor size, wire, drop pipe, pressure tank, pressure switch and the electrical connection are often quoted separately from drilling. Ask whether the quote includes them. Pump installation is itself covered by the TDLR license.
Yield and the risk of a dry hole
Some drillers price a hole that comes up dry the same as one that produces; some offer a different per-foot rate or a contingent price. Ask what happens if the hole yields too little, whether the driller will drill deeper, and at what price.
District and paperwork costs
If a groundwater conservation district covers your land, there may be an application or registration fee, a spacing requirement that limits where the well may go, and a metering or reporting duty. Ask who handles the paperwork and whether it is in the price. See our guide to Texas well permits.
Site work
- Access. A rig needs a route in. Trees, fences, gates and soft ground add time.
- Distance to power. Trenching electric from the pole to the wellhead can be a large line item.
- Location. The well must be sited away from septic fields and animal pens; ask the driller about required setbacks.
- Wellhead finish. A concrete pad, sanitary seal and a pitless adapter are standard on a good job.
Water treatment and testing
Hard water, iron, sulfur, salinity or arsenic may call for treatment. Budget a lab test after the well is finished; see our guide on well water testing.
How to compare quotes
- Give each driller the same information: address, county, intended use, gallons per day needed.
- Ask for the per-foot rate, the estimated depth and how that estimate was made.
- Confirm the license number on the TDLR lookup and that it is current.
- List what is included: casing, cement or bentonite seal, development and yield test, pump, tank, electrical, permits, disinfection, water test.
- Ask for the well report copy and for a written warranty on the pump and workmanship.
- Ask for two references near you and check them.
The lowest per-foot rate is not the cheapest well if the quote leaves out casing, the pump or the district fee.