Well Pump Types: Which One Is Right for Your SC Well

If your well needs a new pump, or you're having one drilled for the first time, the pump type comes down to one thing more than any other: how deep the well is. Shallow wells can run on a simple jet pump. Deeper wells, which cover a large share of the private wells across the Midlands and Upstate, need a submersible pump built to push water up from further down. Get the type wrong and you'll deal with weak pressure, a pump that never stops cycling, or one that burns out long before it should.

What Are the Main Types of Well Pumps?

Most South Carolina wells run on one of three pump types: jet pumps, submersible pumps, or convertible jet pumps. Jet pumps sit above ground, near the wellhead, and pull water up through suction. Submersible pumps sit down in the well itself, below the water line, and push water up instead of pulling it. Convertible jet pumps are a middle option, built so the same pump can be set up as either a shallow or a deep-well unit depending on how it's installed.

You'll also run across hand pumps and solar-powered pumps in a broader search. Hand pumps still show up on old farm wells or as a backup source, and solar pumps get used on remote properties without easy access to power. Neither one is common for a typical SC home on a private well, so we won't spend much time on them here. If we don't recommend one for your situation, we'll tell you why, not just talk you out of it.

How Do Jet Pumps Work, and When Do They Make Sense?

A jet pump stays above ground and uses suction to draw water up through a pipe. That suction only works up to a certain depth, so jet pumps are built for shallow wells, roughly 25 feet or less. Past that point, the pump loses its ability to pull water reliably, and you'll start seeing air in the lines or a pump that struggles to build pressure.

The upside of a jet pump is access. Because it sits above ground, usually in a well house or basement, you can service it without pulling anything out of the well. That makes repairs faster and often cheaper than working on a submersible unit. The tradeoff is depth, and if your well is genuinely shallow, a jet pump is a solid, proven choice. If it isn't, forcing a jet pump onto a deeper well is one of the most common reasons we get called out for a pump that just won't keep up.

How Do Submersible Pumps Work, and When Do They Make Sense?

A submersible pump does the opposite of a jet pump. It sits down in the well itself, submerged below the water level, and pushes water up to the surface rather than pulling it. Pushing water is a lot more efficient than pulling it, especially over distance, which is why submersible pumps are built for deeper wells and are rated to handle several hundred feet or more.

Most of the wells Austin Drilling services across the Midlands and Upstate fall into that deeper range, which is a big part of why submersible pumps are the pump we install and replace most often. They run quieter, since the sound stays underground, and they tend to hold up well over time because the motor stays cool, surrounded by water. The one real downside is access: when a submersible pump does fail, it has to be pulled from the well to be repaired or replaced, which takes the right equipment and experience to do safely.

How Does Your Well's Depth Decide the Right Pump?

Depth is the single biggest factor, but it isn't the only one. Water table depth, how much water your household actually uses, and whether the well was drilled for a home or something larger, like irrigation, all play a role. Here's the general breakdown pump manufacturers and contractors go by:

• Jet pumps: shallow wells, roughly 25 feet or less.
• Convertible jet pumps: a middle range, roughly 90 to 110 feet, depending on the model.
• Submersible pumps: deeper wells, commonly rated to several hundred feet or more.

If you don't know how deep your well runs, that's normal. Most homeowners don't, and it isn't something you can measure safely on your own. When Austin Drilling comes out, checking the well depth and static water level is one of the first things we do, before we ever talk pump type.

How Can You Tell Which Pump Type You Already Have?

This one comes up more than you'd think, especially with a property you just bought, a well you inherited from a previous owner, or a pump that's simply gone missing. Maybe someone pulled the pump before you moved in and you're left staring at an open wellhead with no idea what used to be down there. That's not a situation you have to figure out alone.

A few clues can point you in the right direction before a technician ever shows up. If there's a visible pump sitting above ground near the wellhead, usually inside a small well house or pump house, that's a jet pump. If the wellhead is just a capped pipe coming out of the ground with no visible equipment, and the wiring runs down into the casing itself, you're almost certainly looking at a submersible pump. The breaker panel can help too. A submersible setup typically has a dedicated control box near the panel that a jet pump system doesn't need.

Beyond that, guessing gets risky, since wells and pumps involve electrical wiring you shouldn't handle without training, and pulling a pump the wrong way can damage the well casing. If you're not sure what's down there, or the well came with the property and nobody left documentation, that's exactly the kind of call we take every week. We'll find out what you have and what condition it's in before recommending anything.

What Happens If the Wrong Pump Type Gets Installed?

A mismatched pump doesn't fail quietly. It shows up as one of a handful of symptoms we see constantly: a pump that keeps tripping the breaker, short cycling on and off instead of running steady, or a pump that won't shut off at all and just keeps running. A jet pump pushed past its depth range strains to keep up, which overworks the motor and shortens its life. A submersible pump sized wrong for the well's flow can short cycle just as badly, turning on and off in quick bursts that wear out the pressure switch and the pump itself.

If you're already seeing signs your well pump is struggling, or the water simply stopped altogether, the pump type matters just as much as the age of the equipment. Replacing a failing pump with the same wrong type just sets you up for the same problem again.

Should You Repair Your Current Pump or Replace It With a Different Type?

Not every pump problem means starting over with a different type. If your well depth and water usage haven't changed, the same pump type that's been working usually keeps working, and a straightforward repair is often all it needs. But if the well was drilled deeper than the original pump was rated for, if your household's water demand has grown, or if you're dealing with repeat failures on an old jet pump that was never right for the well in the first place, switching types during a replacement can solve a problem a repair never will.

Austin Drilling walks through what a pump replacement actually involves before we recommend one, including whether your existing pump type still fits your well or whether it's time for something different. We'd rather tell you a repair will hold for a few more years than sell you a replacement you don't need yet.

Frequently Asked Questions

What is the most common well pump type for SC homes?

Submersible pumps are the most common choice for private wells across the Midlands and Upstate, mainly because most wells here run deeper than a jet pump can reliably handle.

Can a jet pump be swapped for a submersible pump?

Often, yes, if the well casing and depth allow for it. It's not a simple swap, though. It involves running new wiring and pulling equipment from the well, so it's a job for a licensed well contractor, not a DIY project.

How do I know if my well pump is even the right size for my house?

It comes down to your well's depth, your water table, and how many fixtures run at once in your home. There isn't a one-size answer, which is why we check your actual well and usage before recommending a pump type or size.

Is it dangerous to try to identify or replace a well pump myself?

Yes, and we'd tell you that even if it cost us business. Well pumps involve buried electrical wiring and equipment lowered hundreds of feet into a casing. A mistake can mean a shock hazard or a damaged well. Leave the inspection and the work to a licensed professional.

Do all well pump types cost the same to maintain?

No, a jet pump sits above ground, so a technician can usually service it without pulling anything from the well, which tends to make routine work simpler. A submersible pump requires pulling the unit for most repairs. Austin Drilling can walk you through what upkeep looks like for the specific pump type in your well.

Getting the Right Pump the First Time

The type of pump your well needs isn't a guess, and it isn't something you should have to figure out from a product page. It comes down to how deep your well runs, how much water your home actually needs, and what condition your current setup is in. Austin Drilling has been doing this across the SC Midlands and Upstate for 66 years, and we'd rather walk your property and tell you exactly what you have than sell you a pump type that doesn't fit.

If your water pressure has dropped, your pump is cycling oddly, or you simply don't know what's sitting in your well, call Austin Drilling and we'll get it sorted out. Reach our West Columbia office at (803) 926-5402 or our Newberry office at (803) 926-7080. We're open Monday through Friday, 7am to 6pm, with Saturday appointments available.