Most well owners have had this experience: something goes wrong with the water, the panic sets in, and the first instinct is to call someone. That call costs money before anyone even gets out of their truck — typical emergency service calls run $150 to $200 during normal business hours, and after-hours rates routinely double that.

A meaningful percentage of those calls turn out to be problems that didn't actually need a contractor. A tripped breaker. A pressure switch that needed a quick cleaning. A waterlogged pressure tank that was the real cause behind what looked like a pump problem.

This post is a symptom-by-symptom diagnostic guide for the most common well problems. The goal is not to turn anyone into a well technician — actually fixing most of these things requires a professional, especially anything that touches the well, the pump, or live electrical components. The goal is to help you figure out what's likely wrong so you can either rule out the easy fixes yourself or describe the problem clearly when you do call someone.

One ground rule before anything else: if a step involves the pump, the casing, or anything inside the wellhead, that is a call-a-pro situation. Submersible pumps sit hundreds of feet underwater on a 240-volt circuit. The well itself is its own hazardous space. The diagnostic checks below are deliberately limited to things a homeowner can do safely from inside the house or at the pressure tank.

Symptom 1: No Water At All

Nothing comes out of any faucet in the house. This is the most alarming symptom and also one of the most likely to have a cheap cause.

Things to check, in order:

1. Look at every faucet, not just the one you noticed. If only one fixture has no water, the problem is plumbing — not the well. A clogged aerator, a stuck shutoff valve, or a broken pipe somewhere in the house is the culprit. The well is fine.

2. Check the breaker panel. A tripped double-pole circuit breaker is by far the most common cause of total water loss. The breaker for the well pump is usually a 240-volt double-pole, often labeled "well pump." If it's tripped (sitting in the middle position between ON and OFF), push it firmly to OFF, then back to ON. If water returns, you're done. A single trip that resets cleanly is usually a fluke. A breaker that keeps tripping is a real problem — likely a pump or wiring issue — and a contractor needs to look at it.

3. Check the pressure gauge on your pressure tank. This will tell you whether the system has pressure or not.

• Gauge reads 0. No pressure in the system. Either the pump is not running (electrical issue, switch issue) or the pump is running but not delivering water (well problem, broken pipe between the well and the house, failed check valve). Listen for the pump. If you hear it running but the gauge stays at 0, shut off the breaker immediately — a submersible pump running dry destroys itself in minutes.

• Gauge reads normal (40-60 psi) but no water at the faucet. The problem is between the pressure tank and the faucet. Could be a closed valve, a broken pipe inside the house, or a clogged filter.

4. Check the well shutoff switch near the pressure tank. Some systems have a manual disconnect switch near the pressure tank. Make sure it's in the ON position.

5. Winter only: check for a frozen pressure switch tube. In freezing weather, the small quarter-inch tube that connects the pressure switch to the plumbing freezes faster than the rest of the system. The pump won't get the signal to start. If everything else checks out and it's below freezing, this is a likely culprit. Warming the area with a space heater or hair dryer can sometimes get the system going.

When to call a pro: Breaker trips immediately every time you reset it. Pump runs but no water reaches the tank. Anything that involves opening the pressure switch, examining wiring, or working on the well itself.

Symptom 2: Low Water Pressure Throughout the House

Water flows, but every tap feels weak. Showers feel like a drizzle, the toilet refills slowly, the washing machine takes forever.

Things to check:

1. Check the pressure gauge. Normal residential settings are typically 30/50 or 40/60 — meaning the pump kicks on at 30 (or 40) psi and shuts off at 50 (or 60) psi. If the gauge reads lower than your cut-out pressure even when no water is being used, you have a pressure problem at the source. If it reads correctly but water still feels weak, the problem is downstream of the tank — likely a clogged filter, a partially closed valve, or sediment in the plumbing.

2. Check whole-house filters and softeners. Sediment filters, carbon filters, and softeners can all clog and restrict flow. Most filters have a bypass valve — flip it to bypass for a minute and see if pressure improves. If it does, the filter is the issue and needs replacement (something most homeowners can do themselves with the correct replacement cartridge).

3. Note when the problem is worst. If pressure is fine at first but drops during heavy use (laundry plus shower plus dishwasher), the well or pump may be at the edge of their capacity. If pressure is low all the time, the problem is more likely a system component (pressure switch out of adjustment, failing pump, partially clogged screen).

4. Listen to the pump. If the pump runs continuously without ever cycling off when no water is being used, something is wrong — likely a leak somewhere, a failed check valve, or a well that can't keep up with demand.

When to call a pro: Pump runs constantly. Pressure won't build to cut-out levels. Pressure switch needs adjustment. Anything that involves diagnosing the pump itself.

Symptom 3: Pulsing or Sputtering Water Flow

The faucet runs, then dips, then runs again. Air comes out with the water. The shower pulses on and off.

Things to check:

1. Check the pressure tank for waterlogging. This is the classic cause of pulsing water. A pressure tank contains a bladder that separates water from a cushion of pressurized air. When the bladder fails, water fills the entire tank and there's no air cushion left to maintain steady pressure. The pump cycles rapidly trying to compensate.

To check, locate the small valve at the top of the pressure tank (it looks just like the air valve on a car tire — it's a Schrader valve). Press it briefly with a small screwdriver or your finger:

• Air comes out: Bladder is intact.

• Water comes out: Bladder has failed. The tank needs to be replaced.

2. Sputtering with a normal pressure tank. If the bladder is fine, the next likely cause is air entering the system somewhere. This often means a failed check valve allowing the line to drain back, or — in shallow well or jet pump systems — the well water level dropping below the pump intake, causing the pump to suck air mixed with water.

3. Check for nearby heavy water use. Sputtering after long showers, laundry, or irrigation runs can indicate the well is being drawn down faster than it can recover. If the system rests for an hour and the sputtering goes away, the well is recovering. Recurring sputtering during heavy use suggests a low-yield well that may need a storage tank system or other intervention.

When to call a pro: Replacing a pressure tank. Suspected failed check valve. Suspected low-yield well or aquifer issue. Air in the system from causes other than a clearly waterlogged tank.

Symptom 4: Short Cycling (Pump Turns On and Off Constantly)

You can hear the pump kicking on every few seconds, even when no water is being used. Or worse, you can hear it cycling rapidly the entire time you run a faucet.

This is one of the most damaging problems if left alone — short cycling burns out pumps far faster than normal operation.

Things to check:

1. Check the pressure tank, as above. A waterlogged pressure tank is the single most common cause of short cycling. Test the Schrader valve at the top. If water comes out, the bladder has failed.

2. Check the air pre-charge on the pressure tank. Even if the bladder is intact, the pressure tank needs a specific air pre-charge to function correctly — typically 2 psi below the pump's cut-in pressure (so 28 psi for a 30/50 system). This can be checked with a tire pressure gauge on the Schrader valve with the system depressurized and the pump turned off. If the pre-charge is too low, the tank loses its ability to hold pressure between cycles.

3. Look for system leaks. If the pressure tank is fine, a leak somewhere in the system can also cause short cycling. The pump kicks on every time pressure drops, even if it's just from a slow leak. Common culprits: a leaking outdoor spigot, a running toilet, a leaking irrigation valve, or a pinhole in a pipe.

4. Check the pressure switch. A failing pressure switch with corroded contacts can also cause erratic cycling, though this is less common than the first three causes.

When to call a pro: Replacing the pressure tank. Diagnosing or replacing the pressure switch. Locating an underground leak. Anything where the cause isn't obvious after the checks above.

Symptom 5: Dirty, Discolored, or Cloudy Water

Water comes out brown, yellow, red, black, milky, or with visible particles. This is one of the areas where a quick visual check can narrow things down considerably.

Things to check:

1. Run the water for a few minutes from a cold tap. Sometimes discoloration is sediment that has settled in pipes, and it clears after a minute or two of flow. If it clears, the issue is occasional sediment in the lines — annoying but not usually urgent.

2. Check hot vs. cold water. If only hot water is discolored, the problem is your water heater (sediment buildup or a failing anode rod), not your well. If both are discolored, the source is the well.

3. Identify the color:

• Reddish-brown: Iron. Usually a water quality problem rather than a well failure. Can be addressed with an iron filter.

• Yellow or tea-colored: Could be tannins (organic material from vegetation) or, less commonly, manganese.

• Black or dark gray: Manganese, or sulfur-related staining.

• Cloudy or milky and clears from the bottom up: Air bubbles. Not a contamination issue — air dissolved in cold water releasing as it warms. Harmless.

• Cloudy or milky and stays cloudy: Suspended sediment, possibly from a failing well screen or excessive drawdown pulling material off the bottom of the well.

• Sand or grit: A failing well screen or worn pump parts. This is a real problem — sand accelerates pump wear significantly.

4. Check for recent events. Did the discoloration appear after heavy rain (which can stir up sediment in wells with compromised seals), after a nearby drilling project, after a long period of disuse, or after some change in the system? Context helps narrow the cause.

5. Test the water. If the water has any change in taste, smell, or color, test it. Bacteria contamination can occur without any color change at all, so visual inspection alone isn't enough.

When to call a pro: Sudden onset of sand or grit. Continuing discoloration after running the tap for several minutes. Sediment causing visible damage to fixtures or appliances. Any positive bacterial test.

Symptom 6: Strange Smells or Tastes

The water suddenly smells or tastes different. This is one of those areas where the specific smell or taste points to the specific cause.

Things to check:

1. Rotten egg smell (sulfur): Usually hydrogen sulfide, often produced by sulfate-reducing bacteria in the well, plumbing, or water heater. If the smell is only in hot water, the water heater anode is likely the cause. If it's in both hot and cold, the issue is the well or plumbing biofilm.

2. Metallic taste: Often iron or manganese. Usually accompanied by discoloration.

3. Earthy, musty, or moldy smell: Can indicate decaying organic matter in the well or the lines. Sometimes the result of shallow groundwater intrusion through a damaged casing or wellhead.

4. Chlorine or chemical smell after recent service: Likely residual chlorine from a recent shock chlorination treatment. Should dissipate within days as the system flushes.

5. Salty taste: Possible saltwater intrusion (in coastal areas) or, more commonly, regeneration discharge from a water softener that hasn't been set up correctly.

6. Sweet or fruity smell: Unusual and worth professional testing. Can indicate certain types of contamination.

When to call a pro: Any persistent unexplained smell or taste. Any time taste or smell appears alongside other symptoms (discoloration, illness, recent flooding). Always test the water if anything seems off.

Symptom 7: High Electric Bill With No Obvious Cause

The electric bill jumped suddenly and the well pump is the most likely suspect. This is one of the symptoms most homeowners overlook for too long.

Things to check:

1. Listen for unusual pump operation. A pump that runs continuously, cycles short, or seems to run more often than it used to is using more electricity than it should. Stand near the pressure tank for 10 minutes during a quiet time of day and listen.

2. Check for leaks. A constantly cycling pump usually means water is leaving the system somewhere. Common spots: outdoor spigots, irrigation systems, toilet flappers, irrigation valves, pinhole pipe leaks. To test cleanly: turn off all water in the house, shut off the irrigation supply if you have one, and watch the pressure gauge over 15-30 minutes. If pressure drops, water is escaping somewhere.

3. Check the pressure tank. A waterlogged tank causes the pump to cycle constantly, which can easily double or triple electricity usage.

4. Check the pressure switch settings. A switch that's been adjusted too high (e.g., 50/70 instead of 30/50) makes the pump work much harder than it needs to.

When to call a pro: Diagnosing or adjusting the pressure switch. Replacing the pressure tank. Locating hidden leaks.

When It's Definitely Time to Call

A few situations where the diagnosis stops being a DIY activity and starts being a "stop and call now" moment:

• Pump runs but no water reaches the tank (shut off breaker first to prevent damage)

• Breaker keeps tripping after being reset

• Visible water around the wellhead or pooling near the casing

• Sudden appearance of sand or grit in the water

• A positive bacteria test

• Any electrical sparking, burning smell, or visible damage to wiring

• Smell of gas or hydrocarbons in the water (rare but serious)

• Water levels dropping consistently outside of normal seasonal variation

Frequently Asked Questions

How much does a typical well service call cost?

For non-emergency service during normal business hours, expect $150 to $200 for the initial response, plus an hourly rate of $125 to $150 and the cost of any parts. After-hours, weekend, and emergency rates typically double these numbers.

Can I replace a pressure switch or pressure tank myself?

A pressure switch is technically a DIY job for someone comfortable with basic electrical and plumbing work — they're inexpensive (around $25) and instructions are widely available. That said, the switch operates on 240V, and a wiring mistake can damage the pump or hurt you. If you've never worked on one, hiring a professional for a one-time switch replacement is usually under $300 and worth it. Pressure tanks are larger, heavier, and involve more plumbing work. Most homeowners hire this out.

My pump is making a humming noise but no water — what is that?

The pump motor is trying to run but is unable to. Common causes are a stuck pump, a seized impeller, or low voltage at the pump. Turn off the breaker immediately to prevent burning out the motor and call a professional.

Why does my water smell like rotten eggs only when the hot tap is on?

The anode rod in your water heater is reacting with sulfur in the water. This is a water heater problem, not a well problem, and it's resolved by replacing the anode rod (usually with an aluminum or zinc one instead of magnesium).

Can I shock-chlorinate my well myself?

Some homeowners do, but it's not a great DIY project. The chlorine concentration has to be right, the well needs to be properly mixed, the system has to be flushed completely afterward, and the water has to be retested. Done wrong, it can damage equipment and may not actually solve the contamination. Hiring a professional for shock chlorination typically runs $150 to $300 and is worth it.

Is it dangerous to remove the well cap?

It can be. Submersible pumps run on 240V, and live electrical components sit just inside the cap. Removing a well cap also exposes the well to contamination. Unless there's a specific reason to do it and you know what you're doing, leave the well cap alone.

What's the cheapest possible "fix" I should try first when I lose water?

In order: check that water is out everywhere (not just one fixture), reset the breaker, and check the well shutoff switch near the pressure tank. These three checks take less than two minutes combined and resolve a meaningful percentage of "no water" situations at zero cost.

Most well problems have a small list of likely causes. The value of running through this kind of diagnostic isn't really about saving the cost of a service call — it's about not paying that cost on a problem that turned out to be a $25 pressure switch or a tripped breaker.

For the situations where a contractor is actually needed, having a clear description of what you've already checked (and what you saw at the pressure gauge, the breaker, the Schrader valve) makes the visit faster and more useful. The most expensive service calls are the ones where the contractor has to start diagnosis from scratch on something the homeowner could have ruled out in five minutes.

For well owners who would rather not deal with the contractor search at all, WelGard provides protection plans that include one call to handle the entire repair process — diagnosis, dispatch, parts, and labor — with no deductibles on covered repairs. To learn more, visit welgard.com or call 866-935-4273 to speak with a well expert.