What a well pump does
A well pump pushes water from the well up to your pressure tank and house. Most deeper residential wells use a submersible pump, a sealed motor and pump unit that sits below the water level at the bottom of the well on a pipe and a power cable. Shallower wells sometimes use a jet pump above ground, in a pump house or garage.
Submersible pumps are out of sight, so failures are often noticed late. A pump is a wear item, and its life depends on water quality, how often it cycles, power quality and how well the rest of the system is set up.
Signs the pump may be failing
Several symptoms point to the pump, but they can also come from a tank, a switch or the electrical supply. A provider should check those before pulling a pump out of a deep well.
- No water at all, even though the breaker is on
- Water that spurts, sputters or surges at the faucet
- A pump that runs constantly without building pressure
- A noticeable drop in flow over weeks or months
- Sand or silt in the water, or a tripping breaker when the pump starts
- A higher electric bill with no other explanation
What affects the cost
Rough planning ranges: a service call to diagnose a well problem often costs a few hundred dollars or less, a pump replacement commonly runs from roughly 1,500 to 5,000 dollars or more, and deep wells with larger motors cost more. Quotes vary by depth, geology, access and pump size, so use these only as a guide.
The pump itself is often only part of the bill. Labor to pull and reset the pipe, new drop pipe or wire, a new check valve, a torque arrester and a new pressure switch or control box can each change the total.
- Well depth, which sets pipe length and the size of the lifting rig
- Horsepower and flow rate the home or property actually needs
- Condition of the drop pipe, wire and fittings you can reuse
- Whether the pump house or wellhead is easy to reach
- Whether the pressure tank and switch also need replacing
What to expect step by step
Repair visits are usually shorter than people expect, but pulling a pump from a deep well can take most of a day. Your provider will give you the exact plan.
- Diagnosis: checking power, wiring, pressure, switch and tank, and measuring the motor's electrical draw.
- A written recommendation: repair, replace or leave alone, with the reasons.
- Pulling the pump and pipe, and inspecting the cable and fittings.
- Installing the new or repaired pump at the right depth with new connections.
- Restoring power, running the system and checking pressure and cycle times.
- Cleaning up and explaining any follow-up work, such as water testing or tank service.
How to choose a pump installer
Texas licenses pump installers through the Texas Department of Licensing and Regulation, so ask for a license number and confirm it. Ask whether the person quoting will do the work or send a subcontractor, and what warranty covers parts and labor on the new pump.
A good installer explains why the pump failed, not only that it did. If the cause was a bad switch, a waterlogged tank or a short-cycling problem, a new pump alone will fail again. Get a written quote that lists the pump brand, horsepower and what is included.
Be cautious of any quote that is given without checking the system or that pushes a full replacement before basic tests.
Repair or replace
Older submersible pumps often reach the end of their useful life after many years, and replacing a pump that is already out of the well can be better value than reinstalling it. If the pump is fairly new and the fault is a switch, capacitor or wiring, a smaller repair makes sense. Ask your provider to show you the failed part when possible.
Common questions
Is it the pump or the pressure tank?
A pump that cycles on and off every few seconds often points to a tank with lost air charge. A pump that runs but delivers nothing, or a motor that hums, points more toward the pump. A provider can tell the difference with a pressure gauge and an electrical test.
Can I keep using a pump that runs constantly?
It is a risk. A pump running without building pressure can overheat, burn out or hide a pipe leak. If you see this, switch off the breaker and call a provider rather than waiting.
Do I need to replace the wire and pipe too?
Not always. Pipe and cable that are in good shape can often be reused, but old or damaged pieces are cheaper to replace while the pump is already out. Ask your installer to inspect them and quote the option in writing.
How long does a replacement take?
Many replacements are done within a day once parts are on the truck. Deep wells, hard-to-reach wellheads and extra repairs can take longer.