Shallow Well Pump Guide: Everything for Wells Under 25 Feet
Shallow wells (dug, bored, or driven) make up a large portion of the rural water supply across the Midwest, South, and coastal plains. If your well is 25 feet or less from the surface to the static water level, a shallow well pump is the right tool. But “shallow” isn’t just a marketing label. It’s a hard physical limit, and buying the wrong pump for your well depth wastes money and leaves you without water.
This guide covers how to confirm your well qualifies, how to size and select the right pump, how to prime it when it stops working, and how to protect shallow well water from contamination, something most pump guides skip entirely. We’ve included types of well pumps context throughout so you can see where the shallow option fits in the broader picture.
Is your well shallow? (how to tell before you buy)
Before purchasing any pump, confirm that your static water level sits within 25 feet of the surface. “Static water level” means the depth to water when the pump isn’t running, not the total drilled depth of the well casing.
Well types that typically qualify:
- Dug wells: Hand-dug or backhoe-dug, 10–30 feet deep, large diameter (3–6 feet), usually lined with concrete rings, brick, or stone. Common in older rural properties.
- Bored wells: Drilled or augered, 6–100 feet total depth but often with a water table under 25 feet. Diameter ranges from 6–36 inches. Steel or concrete casing.
- Driven point wells: 25–50 feet total depth, very small diameter (1.25–2 inches), driven into sandy or gravelly soil. Common in coastal lowlands and river valleys.
What to check: the most reliable source is your well driller’s completion report, which records the static water level at time of drilling. If you don’t have the report, contact your county health department. Most states require drillers to file a well log, and many are searchable online. Your local cooperative extension office can also point you to the state database.
If you can’t confirm depth and suspect the water table is deeper than 25 feet, a deep well pump or convertible jet pump is the safer choice. Buying a shallow well pump for a 40-foot water table will end with a motor that runs and a faucet that doesn’t flow.
What is a shallow well pump?
A shallow well pump uses suction to draw water from a well or cistern no deeper than 25 feet below the pump. Atmospheric pressure limits suction lift to roughly 25 feet at sea level, making a single-pipe jet pump or centrifugal surface pump the only viable option for shallow water tables.
The motor, impeller, and jet assembly all sit above ground. A single suction pipe runs from the pump down into the well, with a foot valve at the bottom end to keep the suction line full when the pump cycles off. The pump creates a low-pressure zone (via the Venturi effect in the nozzle) that lifts water up the pipe and into the pressure tank.
This above-ground design is the single greatest advantage of the shallow well system: everything is reachable, inspectable, and replaceable without pulling anything from the well. Our jet well pump guide explains the Venturi mechanics in more depth for those who want the full picture.
Selecting the right shallow well pump (sizing by GPM and pressure)
Three factors drive the selection decision: flow demand (GPM), system pressure (PSI), and horsepower.
GPM sizing, matched to household demand:
| Household size | Minimum GPM |
|---|---|
| 1–2 bedrooms, no irrigation | 3–5 GPM |
| 3 bedrooms | 5–8 GPM |
| 4+ bedrooms | 8–10 GPM |
| 3-bedroom + lawn irrigation | 10–15 GPM |
These are peak demand figures. A pump that matches your household’s peak draw will cycle at a healthy rate. A pump sized too small will run continuously during peak use, which shortens motor life.
Pressure switch settings: most residential systems run on 30/50 PSI (the pump kicks on at 30 PSI and shuts off at 50 PSI) or 40/60 PSI for better pressure at fixtures. A pressure switch swap runs about $25 if you need to adjust the setting. Make sure the pump you select is rated to deliver adequate GPM at the cut-out pressure, not just at zero head.
HP sizing:
- ½ HP: covers most 3-bedroom homes with a shallow well under 25 feet
- ¾ HP: recommended for 4+ bedrooms or households with significant irrigation demand
- 1 HP: multi-zone irrigation, livestock watering, or peak commercial draw
We recommend sizing up by one HP tier if you’re adding irrigation or planning livestock. A ½ HP pump running at 90% capacity short-cycles more, wears faster, and may trip on thermal overload during a summer irrigation session. A ¾ HP pump at 60% capacity runs quieter and longer between rebuilds.
Other specs to confirm:
- Well casing diameter: minimum 4 inches for most jet pumps; driven wells at 1.25–2 inches may require a compact shallow well pump or a hand pump
- Suction pipe diameter: typically 1.25 or 1.5 inch
- Pressure tank size: a 20-gallon tank is minimum; 30–40 gallons is better for variable demand. Pressure tank replacement runs $200+ depending on size.
Top shallow well pump brands (what we found)
We found meaningful differences between brands in parts availability and build quality, which matters most when a pump fails at 10 PM in January.
Goulds Water Technology (ITT): the standard in the pump contractor trade for the Northeast and Mid-Atlantic. Widely stocked at pump supply houses, not just big-box stores. Parts and service manuals are readily available. A reliable choice for any homeowner who wants a contractor to be able to service it without a special order.
Flotec: common at Home Depot and Lowe’s. Practical ½-¾ HP range, good for standard residential use. Not the most contractor-preferred, but widely available and easy to source fast if you need a same-day replacement.
Red Lion / Franklin Electric: Franklin Electric manufactures OEM motors for many other brands, and Red Lion (a Franklin brand) brings that motor quality into the retail channel. Some Red Lion units are convertible from shallow to deep jet configuration, which is useful if your water table depth is uncertain.
Wayne: budget-friendly for seasonal applications (cabins, camp wells, irrigation-only setups). Not ideal as a year-round primary household pump for a 3+ bedroom home.
We found Goulds and Franklin Electric units had the best parts availability and the clearest service documentation when something needs replacing, an important factor when a failed foot valve or pressure switch needs a contractor to diagnose quickly.
How to prime a shallow well pump
A jet pump that runs but produces no water has almost certainly lost its prime. Pouring a gallon of clean water through the priming plug typically restores suction within 60 seconds, unless the foot valve at the bottom of the suction pipe has failed.
Step-by-step priming procedure:
- Shut off the pump at the breaker or pressure switch. Never add water while the pump is running.
- Locate the priming plug on top of the pump body; it’s usually a brass plug, 3/8 to ½ inch NPT.
- Pour clean water slowly into the priming port, filling the pump housing and as much of the suction line as possible. Use a funnel and take your time, because rushing traps air.
- Replace the priming plug snugly; hand-tight plus ¼ turn is enough.
- Turn the pump on and listen; within 30–90 seconds the motor sound changes as water begins moving through.
- Open a nearby faucet to bleed any remaining air from the line.
If it won’t hold prime: the foot valve at the bottom of the suction pipe is the most common cause of repeated prime loss. This spring-loaded check valve holds water in the suction line when the pump is off. A failed foot valve lets the line drain back into the well, defeating every priming attempt. Replacing the foot valve means pulling the suction pipe, which is a manageable job with a helper and pipe wrenches.
If the foot valve is new and the pump still won’t prime after three attempts, inspect the suction pipe for cracks and the pump body for worn seals. At that point, a pump contractor’s assessment is worth more than additional priming water.
Video: “HOW TO PRIME Shallow WELL PUMP Not Pumping Water” by Everyday I’m TECH n It
For deeper diagnosis when priming doesn’t restore flow, our troubleshooting your well pump guide covers pressure switch failures, waterlogged tanks, and electrical issues in sequence.
Shallow well maintenance and contamination watch
This is the section most pump guides skip, and it matters more for shallow wells than any other type.
Shallow wells sit close to the surface, which means surface water, soil runoff, agricultural chemicals, and bacteria can reach the water table before the ground has a chance to filter them out. The EPA recommends annual testing of all private wells for total coliform bacteria, nitrates, total dissolved solids, and pH. For shallow wells near agricultural land, livestock operations, or septic systems, we recommend testing twice a year.
Test immediately if:
- Flooding occurs anywhere near the well
- You repair or replace any well system component
- You notice changes in water color, odor, or taste
- A nearby neighbor reports contamination in their well
The EPA private well protection guide and CDC well water testing guidelines both recommend using only state-certified laboratories for testing. Many county health departments offer free or low-cost testing kits.
Shallow well-specific hazards to manage:
- Slope the ground around the well cap away from the well in all directions. Surface runoff is the primary contamination route for dug and bored wells.
- Inspect the well cap annually for cracks, gaps, or insect intrusion. A loose or cracked cap is an open door for contamination.
- Keep pesticides, fertilizers, and motor oil at least 50 feet from the well. These percolate down to shallow aquifers faster than most homeowners expect.
- Septic proximity is a major risk factor. If your septic tank or drain field is within 100 feet of a shallow well, more frequent testing is essential. Never use chemical drain treatments without confirming they’re safe for septic systems (most aren’t, and the chemicals reach your water table).
Annual pump maintenance checklist:
- Check pressure tank air charge each spring (use a tire gauge on the Schrader valve with pump off and tank drained; should match your cut-in pressure minus 2 PSI)
- Inspect suction pipe connections for minor leaks that allow air infiltration
- Test and clean or replace the foot valve if priming has been sluggish
- Grease motor bearings on open-drip-proof motors (sealed motors are maintenance-free)
For energy-efficient pump sizing guidance, the Department of Energy covers how pressure tank sizing affects pump cycling and energy use.
If your pump is well pump not working after a maintenance session, that guide covers the most common post-service failure modes.
FAQ
How deep can a shallow well pump reach?
A shallow well pump is limited to 25 feet of suction lift at sea level. This is a physics constraint, not a brand or quality limitation. Homes at higher elevations see even less suction capacity (roughly 1 foot less per 1,000 feet of elevation). If your static water level is deeper than 25 feet, no shallow well pump will deliver consistent water flow. You need a convertible jet or submersible pump.
Can I use a shallow well pump on a drilled well?
Only if the static water level is within 25 feet of the surface. Drilled wells are commonly 100–400 feet deep, but the static water level (where water naturally sits) might be only 15 feet below ground in a high water table area. Confirm the static level from your driller’s completion report before choosing a pump type.
How much does a shallow well pump system cost?
A complete shallow well pump system (pump, pressure tank, switch, pipe fittings, and installation) typically runs $800–$1,500. The pump itself costs $150–$400 depending on HP and brand. A 30-gallon pressure tank adds $200–$400. DIY installation on a like-for-like replacement (same pipe size, same configuration) can save $300–$500 in labor.
Why does my shallow well pump run but not build pressure?
The most likely cause is lost prime: air has entered the suction line and the pump is moving air instead of water. Prime the pump as described above. If pressure still won’t build after priming, check the foot valve, the pressure switch (replace at ~$25 if contacts are burned or stuck), and the pressure tank (a waterlogged tank at $200+ is common in systems over 10 years old).
How long do shallow well pumps last?
A quality shallow well pump with cast-iron or stainless impellers lasts 10–15 years with normal maintenance. Budget plastic-bodied pumps may need replacement in 5–8 years. Foot valves and pressure switches wear faster; budget for replacement every 3–5 years. The biggest life-shortener is running the pump dry, which destroys the impeller seal in minutes.
For the full overview of submersible and deep-well options, see our submersible well pump guide.