Well Pump Maintenance: Once-a-Year Routine

A no-water call can turn into a same-day emergency bill of $300 to $800 before a pump is even replaced. A full submersible well pump replacement often lands around $900 to $2,500, depending on depth, wire, pipe, and local labor. The point of well pump maintenance is simple: spend 30 to 60 minutes once a year looking for small trouble before it becomes a weekend with no showers, no laundry, and no flushing.

If you own a private well, the pump is easy to ignore because it is out of sight. Some parts may be 100 feet or more underground. Other parts, like the pressure tank, pressure switch, wiring, and filters, may be in a basement, crawlspace, shed, garage, or well house. You do not need to be a plumber to do a basic annual check. You do need to know what is safe to look at, what not to touch, and when to call a licensed well contractor.

This routine is for a typical private residential well with an electric pump and pressure tank. It will not cover every setup, but it will give you a plain-English plan you can use every year.

What well pump maintenance can and cannot do

Good well pump maintenance helps you catch symptoms early. It can help you notice short cycling, weak pressure, a waterlogged pressure tank, a leaky fitting, a damaged well cap, or a filter that has been forgotten too long.

It cannot make an old pump new again. It cannot fix a low-yield well. It cannot tell you whether your water is safe to drink. And it should not involve opening electrical boxes, pulling a pump, or taking apart sealed well parts unless you are trained to do that work.

Think of the yearly routine like walking around your truck before a long drive. You are not rebuilding the engine. You are checking tires, leaks, lights, and warning signs.

For more well-owner basics, start with the well water testing guide — yearly bacteria and nitrate tests are part of responsible pump ownership. If a test comes back positive, read coliform in well water and arsenic water test next. Hub overview: well water.

Your once-a-year well pump maintenance schedule

Pick one month and make it your well month. Spring works well for many homes because snowmelt, heavy rain, and soft ground can reveal drainage problems around the well. Fall is also fine if that is when you have time.

Here is a practical schedule:

Task	How often	Typical time	Who should do it
Walk the well area and inspect the cap	Once a year, plus after flooding	10 minutes	Homeowner
Check the pressure gauge and pump cycle	Once a year	10 minutes	Homeowner
Listen for rapid clicking or short cycling	Once a year, plus anytime pressure changes	5 minutes	Homeowner
Check pressure tank air charge if comfortable	Once a year	10 to 20 minutes	Homeowner or pro
Replace sediment cartridge filters	Every 1 to 6 months, depending on water	5 to 15 minutes	Homeowner
Test well water for bacteria and nitrate	At least once a year	10 minutes to collect sample	Certified lab
Full well system inspection	Every few years, or if symptoms show up	1 to 2 hours	Licensed well contractor

If your pump is in a shared well, irrigation well, low-yield well, or older hand-dug well, ask a local well contractor what schedule fits your setup.

Step 1: Walk the well area outside

Start outside at the wellhead. This is usually a pipe sticking out of the ground with a cap on top. In some older homes, the well may be in a pit, under a cover, or even inside a building. If you have a buried wellhead or an old well pit, ask your county or state well program about current requirements. Many areas recommend bringing old buried or pit wells up to modern sanitary standards.

Look for these items:

• The well cap is firmly attached.
• The cap is not cracked, loose, or missing bolts.
• The electrical conduit going into the cap is secure.
• The ground slopes away from the well, not toward it.
• There is no standing water around the casing.
• There are no animal nests, insects, or chew marks around the cap.
• The casing sticks high enough above the ground to stay clear of normal runoff.
• Fuel, pesticides, paint, livestock waste, and fertilizer are stored well away from the well.

CDC and EPA both advise private well owners to protect the wellhead from surface contamination and to test well water regularly. A damaged cap or standing water around the casing does not mean your water is unsafe, but it is a good reason to take action and confirm water quality with a certified lab.

If your well was under floodwater, do not rely on appearance, smell, or taste. Follow your state or county health department guidance, disinfect only if instructed, and confirm results with a certified lab before using it for drinking.

Step 2: Watch the pressure gauge

Most private well systems use a pressure switch, often set at 30/50 psi or 40/60 psi. That means the pump turns on at the lower number and shuts off at the higher number. For example, a 40/60 system starts pumping at about 40 psi and stops at about 60 psi.

Find the pressure gauge near the pressure tank. Then run water from a faucet or hose where you can see or check the gauge. Watch what happens.

A healthy system usually does this:

• Pressure slowly drops as water runs.
• The pump turns on at the cut-in pressure.
• Pressure rises steadily while the pump runs.
• The pump shuts off at the cut-out pressure.
• The system stays quiet until enough water is used again.

Warning signs include:

• The pump clicks on and off every few seconds.
• The pressure bounces quickly between two numbers.
• The gauge drops to zero before the pump catches up.
• The pump runs a long time for a small amount of water.
• The gauge never reaches the shutoff pressure.
• The gauge is stuck, rusty, unreadable, or leaking.

Rapid on-off cycling is one of the most important well pump maintenance clues. It can point to a waterlogged pressure tank, a bad pressure switch, a failing check valve, a leak, or a pump problem. Short cycling is hard on pump motors because each start creates stress and heat.

If you hear fast clicking at the pressure switch, do not ignore it for months. A service call that might have been $100 to $300 can turn into a pump replacement if the motor is damaged by repeated starts.

Step 3: Listen to the pump cycle

You may not be able to hear a submersible pump down in the well, but you can usually hear the pressure switch click or feel the system respond. If your pump is a jet pump located in the basement, crawlspace, or well house, you may hear it directly.

Once a year, run a faucet and listen. You are not looking for perfect silence. You are looking for a change from what is normal at your house.

Call a pro if you notice:

• A pump that hums but does not build pressure.
• A pump that runs continuously when no water is being used.
• A pump that trips a breaker.
• A burning smell near pump equipment.
• Water leaking near electrical parts.
• A pump that loses prime, if you have a jet pump.

Do not keep resetting a breaker. A tripped breaker can mean a bad control box, damaged wire, failing motor, or other electrical issue. That is not a homeowner troubleshooting job.

Step 4: Check the pressure tank

The pressure tank stores a small amount of water under pressure so the pump does not have to start every time you rinse a cup. Inside many modern tanks is an air bladder or diaphragm. If the air charge is wrong or the bladder fails, the pump may short cycle.

A simple homeowner check is the tap test. Knock gently on the side of the tank from top to bottom. The upper part should sound more hollow because it contains air. The lower part should sound duller because it contains water. This is not a perfect test, but if the whole tank sounds full of water, it may be waterlogged.

You can also look for condensation. A normal tank may sweat on the lower portion in humid weather. If the tank sweats from bottom to top, that can be another sign it is full of water.

Some homeowners check the tank air charge once a year with a tire gauge. Only do this if you are comfortable and you know how your system works. The basic idea is that the pump power is turned off, water pressure is drained to zero, and the air charge is checked at the Schrader valve on the tank. The air charge is commonly set about 2 psi below the pressure switch cut-in. So a 40/60 system often has a tank air charge around 38 psi.

If that sounds confusing, skip it and hire a well contractor. A pressure tank replacement commonly costs several hundred dollars for a small residential tank before labor and local conditions. It is still usually cheaper than wearing out a good pump through months of short cycling.

Step 5: Look for leaks and damp spots

A small leak on the house side of the well system can make the pump run more often than it should. Once a year, look around the pressure tank, filters, softener, treatment equipment, water heater inlet, and any visible piping.

Check for:

• Drips at fittings.
• Green or white crust around copper or brass parts.
• Rust stains under steel fittings.
• Damp concrete or wet wood.
• A pressure relief valve that is dripping.
• A toilet that runs when no one has flushed it.
• Outdoor hydrants or hose bibs left partly open.

A toilet flapper leak may not look like a well problem, but it can make your pump cycle all day and night. If you are on a private well and septic system, a running toilet also sends extra water to the septic tank and drainfield. If you manage both, our septic system basics can help you connect the dots.

One easy test is to shut off all water uses in the home and watch the pressure gauge. If pressure slowly falls and the pump starts when nobody is using water, you may have a leak, a bad check valve, or another system issue. Call a pro if you cannot find an obvious fixture leak.

Step 6: Change filters on a schedule

Many well homes have a sediment filter, cartridge filter, iron filter, neutralizer, softener, UV unit, or other treatment device. These are not the well pump, but they affect pump performance and water pressure.

A clogged sediment filter can make it seem like the pump is weak. You may notice poor shower pressure, slow-filling washing machines, or a big pressure drop when two fixtures run at once.

Cartridge filters are often changed every 1 to 6 months. Homes with sandy, silty, or iron-heavy water may need more frequent changes. A $10 to $40 cartridge is not the place to stretch the calendar if it is choking water flow.

Write the date on the filter housing with painter’s tape or a tag. If the filter is dark brown after 30 days, a 6-month schedule is too long. If it still looks fairly clean after 3 months and pressure is good, your schedule may be longer.

For UV systems, replace the lamp on the manufacturer schedule, often once a year. A glowing lamp does not always mean the unit is delivering the right dose. If a UV unit is part of your bacteria treatment plan, confirm performance with lab testing and follow county health department guidance.

Step 7: Test your water yearly

Well pump maintenance and water testing go together, but they are not the same job. A pump can deliver plenty of clear, cold water that still contains bacteria, nitrate, arsenic, or other contaminants you cannot see, smell, or taste.

EPA says private well owners are responsible for testing their own water because private wells are not regulated the same way public water systems are. CDC recommends testing private wells at least once a year for total coliform bacteria, nitrate, total dissolved solids, and pH, and more often after repairs, flooding, or a change in taste, odor, or appearance.

Nitrate deserves special mention. EPA’s maximum contaminant level for nitrate as nitrogen is 10 mg/L. Water above that level is especially dangerous for infants under 6 months, including when the water is used to mix formula. If nitrate is a concern, confirm results with a certified lab and contact your county health department.

At a minimum, many well owners test once a year for:

• Total coliform bacteria.
• E. coli, if total coliform is present or included by the lab.
• Nitrate.
• pH.
• Total dissolved solids.

Depending on your area, you may also need testing for arsenic, lead, uranium, radon, pesticides, PFAS, hardness, iron, manganese, or other local concerns. Your county health department, state well program, or local extension office can tell you what is common nearby.

If you want a broader overview of what to test and when, see our well water testing guide.

Step 8: Keep good records

A folder can save you real money. Keep your well completion report, pump depth, pump model, pressure tank size, service invoices, lab results, and water treatment manuals in one place. If your pump fails on a Friday afternoon, the contractor can work faster if you know what is in the well.

Write down these details:

• Well depth.
• Static water level, if known.
• Pump setting depth, if known.
• Pump horsepower and model, if known.
• Pressure switch setting, such as 30/50 or 40/60.
• Pressure tank brand, model, and size.
• Date of last pump replacement.
• Date of last pressure tank replacement.
• Water test dates and results.
• Filter change dates.

If you do not have your well record, search your state well database or call the county environmental health office. Many states have well logs online, though older wells may be missing or incomplete.

What to leave to a licensed well contractor

There is a clear line between homeowner well pump maintenance and well repair. Looking, listening, recording, and changing simple filters are reasonable for many homeowners. Electrical work, pump pulling, shock chlorination after contamination, and sealed system repairs belong with trained people.

Call a licensed well contractor for:

• No water from the whole house.
• Repeated breaker trips.
• Burnt wiring or hot electrical smells.
• A pump that will not shut off.
• A pressure tank that appears waterlogged.
• A failed pressure switch.
• A suspected underground line leak.
• A damaged well cap or casing.
• Sand or grit suddenly showing up in water.
• Cloudy water after a storm or flood.
• Any repair that opens the well.

A pressure switch part may be inexpensive, but it sits around electricity and water. A control box, pump wire, and submersible pump are not good places to learn by trial and error. If you are 20 miles from the nearest hardware store and the pump quits, a clean repair matters more than saving a small part markup.

Warning signs that need attention soon

Some well problems give you weeks of warning. Others give you one bad shower and quit. These symptoms are worth acting on within days, not months:

• Water pressure is weaker than usual throughout the house.
• The pump cycles more often than it used to.
• You hear clicking at the pressure switch every few seconds.
• Faucets spit air.
• The pump runs when no water is being used.
• The pressure gauge drops to zero during normal use.
• The water changes color after heavy rain.
• The well cap is cracked, loose, or missing.
• You see sand, grit, or black particles in fixtures.
• Your electric bill rises without another clear reason.

Air in the lines can come from plumbing work, a low water level, a failing pump, a leak, or other causes. Sand can come from a failing well screen, a pump set too low, a change in the aquifer, or damaged equipment. Do not assume these will fix themselves.

What well pump maintenance usually costs

Your yearly homeowner routine may cost very little. If you change your own sediment cartridge, you may spend $10 to $40 per change. If you add a certified lab water test, the cost depends on the lab, the panel, and your state. Basic bacteria and nitrate testing is often much less than a broad metals or chemical panel, but prices vary enough that it is best to check local labs directly.

For repairs, common ballpark ranges look like this in many rural areas:

Item	Typical range	Notes
Service call or diagnostic visit	$100 to $300	Distance and after-hours calls can raise this
Pressure switch replacement	$150 to $350 installed	Varies by switch, wiring, and local labor
Pressure tank replacement	$500 to $1,500 installed	Depends heavily on tank size and access
Submersible pump replacement	$900 to $2,500 or more	Depth, pipe, wire, pump size, and access matter
Emergency after-hours work	Often higher than normal rates	Ask before approving non-urgent work

These are not quotes. A 60-foot well with easy access is a different job from a 400-foot well on a steep driveway in January. The useful takeaway is that small symptoms are cheaper to check than total no-water failures.

Annual well pump maintenance checklist

Print this list or copy it into your home notebook. Do it once a year, plus after flooding, major plumbing work, or a sudden change in water pressure.

• Walk around the wellhead.
• Confirm the cap is tight, uncracked, and secure.
• Check that the ground slopes away from the well.
• Remove leaves, brush, and debris from around the casing.
• Make sure chemicals, fuel, manure, and fertilizer are stored away from the well.
• Look for standing water or erosion near the well.
• Find the pressure gauge and read the normal range.
• Run water and watch the pump turn on and off.
• Listen for rapid clicking or short cycling.
• Check for leaks around the pressure tank, filters, and visible pipes.
• Look for damp floors, rust stains, or mineral crust.
• Change sediment filters if they are dirty or overdue.
• Write the date on new filters.
• Review your water treatment equipment schedule.
• Test your well water with a certified lab at least once a year.
• File lab results, invoices, and equipment notes in one folder.
• Schedule a contractor visit if pressure, noise, water color, or cycling has changed.

A simple routine for the same month every year

The best well pump maintenance plan is the one you will actually do. Do not make it complicated. Pick a month, set a reminder, and use the same checklist every time.

A good yearly rhythm looks like this: one weekend morning for the wellhead, pressure gauge, leak check, and filter notes; one weekday to collect and mail or drop off a certified lab water sample; one phone call if anything looks wrong.

If your well is older than 20 years, your records are missing, or you recently bought the home, consider hiring a licensed well contractor for a baseline inspection. Ask them to show you the pressure switch setting, pressure tank size, shutoff locations, filter schedule, and where the well record can be found. That one visit can make future troubleshooting much easier.

You do not need to hover over your well pump every week. You just need to notice changes early, keep surface water out of the well, test your drinking water, and bring in a pro when the symptoms point beyond a homeowner check.

To make the yearly routine easier, set up Tank & Well’s free reminders. We will email you before your well water test is due, with no app, no account, and no charge.