If your private well still makes water but the pressure has dropped, the cause is usually one of a handful of things, and they are worth ruling out in order from easiest to hardest. Weak or fading pressure is a different problem than no water at all, and the good news is that most pressure issues trace back to a single part rather than the well itself. Here is the ladder we work through, with what each one looks like and whether it is a quick homeowner check or a call to us.
Start with the easy stuff: valves and filters
Before you assume the worst, rule out the simple causes. A main shutoff valve or a hose-bib valve that got bumped partway closed can choke pressure to the whole house. So can a clogged sediment filter or whole-house cartridge, which is common in the Hill Country where Trinity and Edwards wells often carry fine sediment and lime.
- What it looks like: pressure dropped gradually, or fell off after the last filter change was overdue. Sometimes only certain fixtures are weak.
- Homeowner check: yes. Confirm every valve from the pressure tank to the house is fully open, and swap a dirty filter cartridge for a fresh one. If pressure returns, you have your answer.
Water trouble now, or planning ahead? Tell us what your well is doing and we will give you a straight answer and a free quote, often the same day.
Check the pressure tank
The pressure tank is what holds steady pressure between pump cycles. When the air bladder inside fails or the tank becomes waterlogged, you lose that cushion and pressure swings hard. A waterlogged tank also makes the pump short-cycle, kicking on and off every time you open a tap, which wears it out.
- What it looks like: pressure surges then sags, the pump clicks on and off rapidly, or you hear it cycling constantly. Tapping the tank may sound solid (full of water) instead of hollow at the top.
- Homeowner check: partly. You can listen for short-cycling and feel whether the tank is heavy and waterlogged, but checking and setting the air charge, or replacing the tank, is a service call. If you are weighing your options here, our guide to constant pressure systems versus a standard pressure tank is worth a read.
Look at the pressure switch
The pressure switch is the small box that tells the pump when to turn on and off. When its contacts get pitted or the diaphragm weakens, it can call for pressure too late or cut out too early, leaving you with weak flow. Switches are a common, inexpensive failure point.
- What it looks like: pressure never builds to where it used to, the pump runs but tops out low, or it behaves erratically. Sometimes you can hear or see the contacts chattering.
- Homeowner check: no. The switch carries the pump's full voltage, and adjusting or replacing one is work for a licensed pump installer. This is a straightforward well repair for us.
Consider clogged screens and scaled plumbing
Hill Country water is hard. Over years, lime scale and iron can narrow pipes, plug aerators, and foul the pump's intake screen down in the well. The restriction builds slowly, so the pressure loss creeps up on you.
- What it looks like: a long, gradual decline in pressure, often house-wide, with visible scale on fixtures and aerators. Hot water may be worse if scale has built up in the heater.
- Homeowner check: partly. Cleaning faucet aerators is easy. A clogged intake screen or heavily scaled well column is a service call, and in some cases well acidizing can restore lost flow by clearing mineral buildup.
A worn or undersized pump
Pumps do not last forever. As the impellers and seals wear, a pump still runs but can no longer push the pressure it once did. This is more likely on an older system, especially one that has been short-cycling for a while.
- What it looks like: the pump runs long and hard but never quite builds full pressure, often paired with a higher electric bill. These overlap with the broader signs a well pump is failing.
- Homeowner check: no. Diagnosing a worn pump means testing the system and often pulling the pump from the well. If it is at the end of its life, a proper pump installation is the lasting fix.
Drawdown on a deeper well during drought
Finally, in a dry stretch the water level in the aquifer can drop below where your pump sits comfortably. The pump then pulls air or runs against a falling column, and pressure fades, especially during heavy use. This is real in the Hill Country when the Trinity drops during extended drought.
- What it looks like: pressure fine in the morning but failing under afternoon demand, air sputtering at the taps, or recovery that lags after a long shower. It often tracks the dry season.
- Homeowner check: no. Measuring static and pumping water levels and deciding whether to lower the pump or take other steps is our work, and a drought-related pressure loss can become an emergency well service call if the water drops out entirely.
When to call us
If you have ruled out closed valves and a dirty filter and the pressure is still weak, that is the point to call. We diagnose the whole system, pump, tank, switch, plumbing, and well, so we fix the actual cause instead of swapping parts and hoping. We have been reading Hill Country wells since 1985, and we will tell you honestly what it will take to get your pressure back.