Well Pump Replacement in San Antonio
When a pump genuinely needs replacing, the decisions that matter are sizing and what else you replace while the well is open. Both are worth getting right — the pull is the expensive part, and doing it twice is the costliest mistake on a deep well.
Sizing for Trinity depths
Most domestic wells in Comal, Kendall and Bandera counties sit between 400 and 900 feet. At those depths the pump has to lift water further, which means more head, more starting load and more heat on the motor. A pump sized for a 250-foot well will run constantly and fail early in a 700-foot setting.
Two numbers determine the right pump: your well tested yield in gallons per minute, and the required head at your setting depth. A quote that references neither is a guess.
What a replacement includes
- Pulling the existing pump and pipe
- New submersible pump matched to depth and yield
- New drop pipe where the existing pipe is aged or scaled
- New wire and splices
- Pressure switch and tank check — a failed tank will kill the new pump too
- Reset, prime and pressure test
Expect $2,600 to $5,200 for a complete job at typical Hill Country depths. Compare against repair options first — not every failure needs a new pump.
Frequently Asked Questions
What size pump do I need for a 700-foot well?
It depends on your well tested yield in gallons per minute and the pump rated head at your setting depth. Ask any contractor for both numbers. At Trinity depths an undersized pump runs continuously and fails early, while an oversized one over-pumps the well.
How much does a full well pump replacement cost in San Antonio?
Typically $2,600 to $5,200 including the pull, pump, wire, drop pipe and labour. Depth is the main variable, so a shallow Medina County well can land well under that range and a deep Canyon Lake well above it.
Should I replace the drop pipe at the same time?
Usually yes on an older deep well. The rig is already on site and the pipe is already out of the ground, so doing it later means paying the pull cost twice.
Request Well Pump Service
Fastest response is by phone — call 210-485-5491. Or send details below and we'll call you back.