Rural families' quality of life often depends on submersible well pumps, which must be reliable and powerful to deliver enough water for cooking and sanitation.
The best submersible well pump on the market is the Hallmark Industries MA0419X-12A Deep Well Submersible Pump, thanks to its reliability and excellent output.
The 4" diameter MA0419X-12A uses 2 horsepower to provide up to 35 gallons of water per minute, which is more than sufficient for most homes and businesses. It runs on 230 volts at 1,500 watts at full power and works at depths up to 400 feet. It is acclaimed for its ease of installation and longevity.
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Overall: Hallmark Industries MA0419X Deep Well Submersible Pump
- Patented impeller design
- built in check valve
- High efficiency hermetically sealed motor
- Voltage: 230V
- 1 Year Limited Warranty
- Red Lion
The Hallmark Industries MA0419X-12A Deep Well Submersible Pump is the best submersible pump for domestic use because it works at depths of up to 400 feet, and can deliver up to 35 gallons per minute.
Top Choices on the Market
Best Submersible Well Pump Reviews 2020 (UPDATED)
1. Hallmark Industries MA0419X-12A Deep Well Submersible Pump, 2 hp, 230V, 60 Hz, 35 GPM, 400' Head, Stainless Steel, 4"
- Patented impeller design
- Solid stainless steel body with heavy duty cast iron discharge
- Built in or external capacitor start
- built in check valve
- thermal protection switch
Engine Power: 2 hp
Motor Type: 2-wire design
Maximum Depth of 400 Feet
Deep wells are a challenge to pump from, but this pump is up to the task. The pump is engineered to move water to the surface from depths of up to 400 feet. Households that have recently dug a deeper well to maintain water access should look to this pump as a replacement.
230 Volts and 1500 Watts
With a 230-volt, 1500-watt system, this pump can get water to the surface fast with fewer water pressure problems. It has a strong electrical system that creates a very energy efficient submersible well pump. The wire casing is sturdy to protect fragile parts from damage.
Up to 35 gallons per minute
Although submersible wells' pumping capacity is diminished at lower depths, this model still pumps out plenty of water. Even at peak demand, most households use under 18 gallons per minute. This level of pumping capacity means families can shower, do laundry, and flush toilets without worrying about running out of water.
- Works deeper than most pumps, but can run for years without burning out
- High electrical capacity with secure wire casing
- Rated at up to 35 gallons per minute
- Less expensive than most competitors
- 2-wire design requires pump to be brought to the surface if any repairs are needed
2. Hallmark Industries MA0414X-7A Deep Well Submersible Pump, 1 hp, 230V, 60 Hz, 30 GPM, 207' Head, Stainless Steel, 4"
- 4" deep well submersible pump
- Built in 1 HP capacitor start and thermal protection switch
- Built in starter box
- Unique design reduces its noise
- thermally protected to prevent overheating
Engine Power: 1 hp
Motor Type: 2-wire design
1 HP Motor
Moving water to the surface requires at least ½ HP, but most strong submersible well water pumps need at least 1 HP. This unit has a solid 1 HP motor that can move up to 33 gallons per minute. It's reliable and won't burn out easily, even after years of use.
Works up to 207 feet
This pump works in mid-range deep wells up to 207 feet deep. It's also easy to install in deep wells, thanks to its slim yet durable design.
Solid Water Pressure
This pump has three different pressure settings, which can be used at varying depths to provide optimal pressure for your home. The main settings are 20/40 PSI, 30/50 PSI, and 40/60 PSI. The highest PSI setting can be used at depths of up to 66 feet.
- Works up to 207 feet underground
- 1 HP motor is strong enough to provide good pressure
- 3 different pressure settings so homeowners can adjust based on pump depth
- 33 gallons per minute maximum
- Less expensive than similar models
- Fewer gallons per minute than the #1 rated Hallmark model above, even at the same depth
- 2-wire design requires pump to be brought to the surface for troubleshooting
3. Red Lion RL12G15-3W2V Submersible Deep Well Pump, 1-1/2-HP 12-GPM 3-Wire 230-Volt, Stainless Steel
- Hex rubber bearing assures shaft stability
- Built-in check valve stops backflow and secures system pressure
- Built-In Suction Screen
Engine Power: 1.5 hp
Motor Type: 3-wire design
Red Lion sells this model in multiple versions, including ½ HP, ¾ HP, 1 HP, and 1-½ HP. Though some homeowners only need ½ HP, having the range of options up to 1-½ HP is excellent for large families who need more water.
The ½ HP model works up to 200 feet deep, and the 1-½ HP model works up to 545 feet deep. The higher HP models provide good PSI and gallons per minute, even at depths under 200 feet.
3-Wire Design with Control Box
Each model is available in a 3-wire design that includes an external control box for easy settings changes and maintenance. This allows most troubleshooting to be done from the surface, instead of having to pull out the pump every time it needs fixing.
- The range of HP motors allow owners to get the strength they need
- 1-½ HP model works up to 545 feet, and lower HP models work to at least 200 feet
- Good pressure and gallons per minute even at lower depths
- Smaller diameter works in narrow well casings as small as 4"
- More expensive than comparable models
- 3-wire design can be difficult for DIY installation
4. Goulds 10HS05422C 4" Submersible Water Well Pump, 10 GPM, 1/2 HP, 230 V, 2 Wire
- 2-Wire NEMA Standard all stainless water-filled motor
- built-in o-ring seal check valve
- Quad Lock Technology
- Stainless steel hex design shafts
- Noryl engineered composite impellers
Engine Power: 1.5 hp
Motor Type: 2-wire design
Sturdy Parts and Easy Repairs
Goulds pumps are designed with easy-to-replace parts, including the check valve. The internal parts, including the impeller, are made of strong composites that can hold up for years without clogging or breaking. The pipe fitting is strong and long-lasting thanks to its clever engineering to latch pipes firmly in place.
Up to 15 Gallons per Minute
Although the pump is rated for 10 gallons per minute, it can actually deliver 15 gallons per minute under optimal conditions. When used with a pressure tank, the pump delivers excellent water pressure and water flow for most households.
The pump is covered under a 5-year warranty, which is much longer than most pumps. The warranty even covers pump failures due to lightning strikes and corrosion, providing more peace of mind for homeowners.
- Provides plenty of water for most family sizes
- Parts are easy to replace and repair, without compromising quality
- Composite materials make important parts more durable
- 230 volts to keep the motor turning fast
- 5-year warranty means less hassle and risk of replacement
- ½ horsepower results in fewer gallons per minute than higher HP models
- The 2-wire design has no external control box
5. Flotec FP3212-12 3-Wire Submersible Well Pump
- Corrosion-resistant stainless steel pump and motor housing
- Floating Stack Design for sand resistance and reduced sand locking
- economical and energy-efficient
- 3-Years Limited Warranty
Engine Power: 0.5 hp
Motor Type: 3-wire design
Balance of Voltage and HP
The Flotech delivers consistent power with a balance of ½ HP and 230 volts. It can push out up to 13 gallons per minute, perfect for average-sized families, with a pressurized tank connected to the pump. It delivers adequate PSI up to its maximum depth of 150 feet.
Durable and Slim
Sturdy construction allows the pump to continue pumping for years, even when faced with high-sediment water. The short and slim body is easy to install in wells as small as 4" across. At 27 lbs., it's also lighter than many comparable models, which makes DIY installation and removal easier.
3-wire Setup with Control Box
The 3-wire design allows the pump to be controlled remotely, usually from inside the house. The box can be installed right next to the pressurized tank for easy system management. Troubleshooting and adjustments can be done without having to haul the pump out of the well.
- Fits in narrow 4" wells
- Lighter than many pumps
- 230 volts for strong power, even during peak demand
- 3-wire design is better for pressure adjustments, repairs, and maintenance
- Maximum of 13 gallons per minute is lower than many competitors
- 3-wire design is more difficult to install
6. Sta-Rite Industries Submersible Pump 1/2Hp 10 Gpm FP2212
- Control box not required
- Pumps to depth of 400 ft.
- High performance pumps
- Proven floating stack impeller design
- Stainless steel pump and motor housing
Engine Power: 0.5 hp
Motor Type: 3-wire design
Floating Stack Design
Since sand and grit can clog pumps, high-sediment water requires a carefully engineered pump. This floating stack pump resists clogging and locking from sand. It can resist burnouts and other motor problems and last for years without experiencing maintenance issues.
Includes Control Box
Pumps without control boxes can be a hassle to troubleshoot and maintain since the pump typically has to be pulled out of the well to deal with problems. Control boxes attached with a 3-wire design allow the pump's pressure to be adjusted and minor electrical problems to be fixed from the surface.
The pump's floating stack design allows it to deliver water consistently, even when having to filter out sand and sediment. With a maximum PSI of 105, homeowners should have no problems getting water out of wells up to 150 feet deep. Up to 13 gallons per minute can be pumped up from shallow depths.
- Floating stack design resists sand locking and clogs
- Sturdy model that can last for years with no problems
- 3-wire design for easy maintenance and troubleshooting
- Maximum of 105 PSI provides strong pressure
- Can be more difficult to install due to required control box
- Only works up to 150 feet deep
7. Happybuy Well Pump 1/2 HP Submersible Well Pump 150ft Head 25GPM
- 304-grade stainless steel Housing
- built in check valve made from stainless steel
- Submersible down to a water depth of 150ft
- Heavy-duty thermoplastic impellers
Engine Power: 0.5 hp
Multiple Model Options
Happybuy pumps are available in an assortment of HP and voltage combinations, including ½ HP and 110 volts, 1-½ HP and 110 volts, 2 HP and 220 volts, and 3 HP and 220 volts. This gives homeowners significant flexibility in buying whatever capacity they need for their family.
Up to 630 feet
Although most wells are well under 500 feet, the 3 HP model can push water from depths of up to 630 feet. The 2 HP version reaches an impressive 440 feet, with lower HP models still adequate for most wells.
High Gallons per Minute
The 3 HP and 2 HP models can push out up to 43 gallons of water per minute and maintain high gallons per minute through most typical well depths. Even the 1-½ and ½ HP models push out 40 and 25 gallons per minute, respectively.
- Available in a variety of voltage and HP options
- 3 HP model works up to 630 feet deep, with the ½ HP model good up to 150 feet
- Up to 43 gallons per minute capacity for higher HP models
- Includes control box, which makes troubleshooting and adjusting pressure easier
- General problems with customer service and replacements reported in reviews
8. Grundfos 10SQ05-160 115v 3" Submersible Water Well Pump
- Stainless Steel Pump Housing
- Soft Start Design
- Dry-Running Protection
- Overvoltage & Undervoltage Protection
- 2 Year Warranty
Engine Power: 0.5 hp
Soft Start Motor
The soft-start motor reduces sudden drains on generators and provides a steady acceleration. The pump also includes overload, overvoltage, and undervoltage protection to reduce the risk of electrical failure. Despite these added safeguards, the motor has a maximum of 15 gallons per minute and can continue pumping 10 gallons per minute or more down to 160 feet.
Lasting Materials and Design
The floating impeller design makes it more resistant to sand and other sediment. Hydraulic pump parts are reinforced with polyamide, reducing breakdowns, and enhancing the life of the pump.
Small 3" Tube
Most submersible well pumps are at least 4" in diameter, but this one can fit in well casings as small as 3". This allows well owners to replace smaller pumps without drilling a larger well. At 12 pounds, it's much lighter than most models and an easy DIY job.
- Floating impeller and reinforced hydraulic pump
- 3" size allows it to fit a wider range of well sizes
- Soft start motor, overload protection, and other safeguards
- Maximum 15 gallons per minute despite small size
- Light weight makes it an easy DIY job
- More expensive than similar models
- 115 volts is less energy-efficient for submersible well pumps
9. Zoeller Submersible Pump 1/2 Hp Boxed 1-1/2" Stainless
- Powder coated cast iron construction dissipates motor heat
- Non clogging vortex impeller allows pump to pass small diameter solids
- US made by quality craftsman
Engine Power: 0.5 hp
Shallow Well Design
This pump is designed for shallow wells and can also be used in housing separate from the well casing. It is compact and sturdy, providing years of use for homeowners. It is easy to install and use, especially when used as a replacement unit for an existing pump.
70 gallons per minute
With a stunning 70 gallons per minute of pumping power, this pump delivers water much faster than most. Large families will be able to get more than enough water when this pump is used in shallow wells. Though the gallons per minute rate drops off after 25 feet, this pump works better than most shallow pump wells when used at appropriate depths.
Most submersible pumps run on 230 volts because higher voltage actually translates to better energy efficiency. This one can run on just 115 volts. This makes it much easier to plug in and use without overloading home electrical systems.
- Works great in shallow wells up to 25 feet
- More PSI and gallons per minute than comparable models
- 115 volts is easier to set up and run
- Gallon per minute capacity reduces sharply after 25 feet
- 45 pounds, much heavier than others on this list
Hallmark MA0419X Deep Well Submersible Pump
Submersible well pumps vary dramatically in capacity and pressure, with some working in wells over 500 feet deep. Although some families need as little as 10 gallons per minute at peak demand, families with larger homes may need closer to 18 at peak demand.
Pumps and well capacity should be carefully assessed, especially if your home has had water pressure problems in the past.
Overall, the Hallmark Industries MA0419X-12A Deep Well Submersible Pump is the best deep well pump. It provides water from depths up to 400 feet, which is more than sufficient for most rural wells. It provides up to 35 gallons per minute, and still provides generous PSI at lower depths.
Hallmark's pumps are known for being long-lasting without being as expensive as some competitors. They are extremely sturdy and have solid wire casing to protect sensitive electronics from damage.
A new submersible deep well pump can improve a home's water supply significantly. If your home's well water pressure has been dropping, that's a sign that the pump has been worn down and needs replacing.Families who still rely on municipal water may also find that a deep well submersible pump can provide fresher, faster water at a fraction of the price.
How to Pick the Perfect One for Your Needs
Well pumps are designed to deliver a certain number of gallons per hour. Most well pumps for residential use provide at least 600 gallons per hour, with some capable of providing over 1,800. Single-family homes need far less than 1,800 gallons per hour but may still need large amounts of water in short bursts.
A well pump that doesn't provide enough water causes drops in water pressure during showers, washing machine cycles, and other peak usage times. The size of your home and number of appliances make the biggest impact on water usage.
A very small house rarely uses more than 10 gallons of water per hour, while a 4-bathroom house may use 18 gallons of water per hour at peak times.
Some deep well submersible pumps work in wells over 600 feet deep. Though they can technically be used in wells less than 100 feet deep, high-capacity models may provide much higher PSI than necessary.
Other considerations include ease of installation and warranty. Though most installation jobs require professional assistance anyway, pumps that are easy to install have a reduced risk of delays or eventual maintenance problems.
Look closely at the best submersible well pump reviews to get an accurate picture of which pumps provide the best overall experience for installation and repairs.
For easier maintenance, get a 3-wire submersible pump with a separate control box. A 3-wire pump can sometimes be repaired without bringing it up to the surface. Though 2-wire pumps are easier to install, they must be brought up to the surface every time they need a repair.
The estimated lifespan of a pump also matters. A good pump should last 8-10 years, with some lasting up to 25 with proper care and maintenance. Longer is always better, but keep in mind that estimated lifespans can vary based on several factors, including local water sediment.
You can increase the life of your pump by minimizing the number of times it stops and starts cycles. One way to do this is by attaching a larger pressurized tank for water storage. This tank helps by evening out the sudden starts and stops in water demand, taking stress off of the pump.
Submersible well pumps can be ordered online once you've concluded which pump works best for your home. A local company may need to install it in a new well, but replacement pumps can be DIY installation jobs with some plumbing tools and careful planning.
Recommended For You: Best Well Pumps 2020
How to Accurately Size It
Buying the appropriately sized well pump requires a careful look at every room in the house. One method of sizing a well pump requires counting the number of showers, sinks, toilets, dishwashers, and laundry machines across all rooms. If you have outside faucets for garden hoses, include them in the number of sinks in your calculation.
Once you've double-checked the number of water fixtures, use that number as the number of gallons per minute you need. For example, if you have 14 total fixtures, you should get a pump that provides at least 14 gallons per minute.
Alternately, you can size a submersible pump based on peak demand. If everyone in your home showers in the morning, for example, a peak demand calculation may provide a more accurate look at how many gallons per minute or hour you need. This also may provide a more accurate picture for pools, hot tubs, and sprinkler systems.
You also need to look at how much water your showers, laundry machines, dishwashers, and sinks use. Typically, showers and washing machines each use 5 gallons per minute, and toilets and sinks use 4 each. Dishwashers only use 2 gallons per minute.
Pools, hot tubs, and sprinkler systems can be tricky to include. These amounts can vary widely, so check the documentation provided with each system to determine its water usage.
Sprinkler systems also require up to 40 PSI of pressure, which can cause a drop in pressure to other fixtures if the pump is not supplying enough.
Keep in mind that peak demand can fluctuate if you host guests. If you only have two people living at home but sometimes have overnight guests, calculate peak demand based on the maximum number of guests possible at one time.
When calculating based on potential peak usage, you may get a number that's much higher than the number of fixtures in the home. If you're uncertain of your calculations, there are also industry standards to use as a guideline. For example, a 2- or 2 ½-bathroom home needs a pump that provides at least 14 gallons per minute.
Some pumps provide their capacity in gallons per hour, but most homes won't sustain their peak demand for a full hour at a time. Most showers are much less than an hour, and laundry machines' peak usage is just seven minutes.
A submersible well pump is also typically used with a pressure tank to help manage water flow, so a pressure tank should be selected in accordance with your home's peak demand.
When water is drawn out of a pressure tank instead of directly from the pump, the pump has extra time to catch up to meet demand.
Pressure tanks are also important for wells that can't consistently provide enough water during peak demand. Even the best pump in the world can't pull water from a dry well. Pressure tanks allow water to be brought to the surface as soon as it's available in the well, then stored for use once it's needed.
Clean water anywhere
Submersible well pumps can be installed anywhere the water table is high enough to provide a steady supply. Even extremely rural areas can get a long-lasting well dug. Wells provide a much more reliable supply of water than rainwater collection without building huge storage containers that use a lot of space.
Reduced utility costs
Water utility costs are high in some areas, so submersible well pumps can reduce long-term costs. Though submersible wells have up-front costs and occasional maintenance costs, they can be significantly less than comparable utility costs. Even filter replacement costs are low and infrequent.
More reliable than shallow well pumps
Shallow well pumps and convertible jet pumps can be prone to maintenance problems. They sometimes require re-priming after a power outage, and they may require other troubleshooting if bubbles appear due to low water pressure. Submersible wells avoid these common problems because they are fully submerged in the water source.
Can improve water pressure as needed
Municipal water lines require families to wait around for utility workers to make repairs if there is a water pressure problem or other issues. Sometimes, the utility company may even try to claim that a water pressure problem isn't their fault. With submersible well pumps, homeowners can take control of their water supply and make any adjustments needed over time.
With appropriate maintenance and filtration, well water can be cleaner than city water. Improvements in filtration technology make it possible to have perfectly clean well water free of rust and other contaminants. You can easily monitor and address issues yourself instead of waiting for utility officials to act.
Years of use
Submersible well pumps can be used year-round without winterization. They typically need replacing every 8-10 years but last for up to 25 years in optimal conditions. They give peace of mind and a significant return on your investment.
Submersible vs Shallow Well Pumps
Shallow well pumps, including convertible jet pumps, are designed for wells up to 25 feet deep. They sit outside the water in a separate area called a well housing. The pumps pull the water out and send it through pipes for filtration and storage.
Shallow well pumps must be manually primed before use, and sometimes require re-priming after loss of power. They also can develop minor problems due to cavitation, or bubbles forming in the water supply.
During the winter, shallow well pumps must be winterized unless they are kept in housing below the frost line.
Convertible jet pumps can be paired with an ejector to pull water out from up to 90 feet deep. These pumps are helpful for homeowners with water tables that fluctuate seasonally but still may require more maintenance than submersible pumps.
Submersible well pumps can work in any water depth, although some may deliver excessive PSI in wells less than 100 feet deep. They also avoid many of the maintenance issues of shallow well and convertible jet pumps. They can be difficult to install, but external control boxes make it easy to use and adjust them after installation.
All three types have comparable average lifespans of around 10 years. The depth of your well ultimately decides the best option for you.
Do you want to know more about other types of pumps like recirculating water pumps? Check this article out.
2-Wire vs. 3-Wire
Two-wire submersible well pumps have two electrical wires plus a grounding wire. These pumps are easy to install and use, since only the power supply and water pipe need to be attached.
Three-wire pumps have an additional wire to connect to the pump's external control box. This box is typically placed near the pressure tank and provides an easy method for turning off the power or adjusting pressure settings.
The right pump for you will partly depend on if you want to install the pump yourself. Two-wire pumps are easier to DIY install, since there is no control box to worry about. However, they are more difficult to troubleshoot yourself if they ever need maintenance or repairs.
Three-wire submersible well pumps may require professional assistance to install, depending on your familiarity with well systems. Even if your previous pump was 3-wire, the control box might not be compatible and may need to be replaced. Though 3-wire systems can make maintenance and adjustments easier, there are times when the pump must be pulled out for repairs.
In the end, either wire system is a good option. Some of the best and most reliable pump systems are 2-wire systems, and some are 3-wire. Other features like maximum depth and capacity are much more important.
How Does It Work?
- When a faucet is turned on in a house, water moves through the pipes. If the water is only used for a few seconds, the pump may not turn on at all, and the process ends.
- Depending on the exact settings of the pump and its control box, the pump turns on in response to a drop in water pressure in the pipes. Even if a pressurized tank is between the house and the pump, the pump eventually switches on to provide more water.
- The pump's motor, which is protected inside a special hermetically sealed chamber, begins to turn. This turns an impeller, which draws water into the body of the pump.
- As the water enters the pump, it may pass through a pre-filter to keep out sand and other sediment that may clog the pump.
- The water is pushed up out the pipes attached to the pump toward the house. Depending on how much water is being used, the pump may stay on for a few seconds or for several minutes.
- The water is filtered and typically stored in a pressure tank until it is needed. Once a faucet or other water fixture is turned on, the process begins again.
Why Do You Need It?
Submersible well pumps are ideal for rural households who are far from municipal water sources. They are low-maintenance and can be used for cabins, farms, summer homes, and anywhere else in the countryside.
Submersible pumps are also an excellent option for families who are currently using municipal water but have trouble with water pressure or quality. Utility companies sometimes struggle to maintain water pressure at the far edges of their network, and old pipes can cause contamination problems.
A well system allows you to keep control of your water supply and adjust pressure and filtration as needed.
The up-front investment of a water pump can translate into major long-term savings. If your land has a high enough water table, installing a well can both increase the value of your property and allow you to stop paying municipal water fees. Submersible pumps can last up to 15 years in low-sediment water.
Shallow wells that currently use a shallow well or convertible jet pump can also benefit from a submersible well pump. Submersible well pumps require less maintenance and don't need winterization or re-priming.
Submersible well pumps may also become necessary if your well has started to dry up. Digging a deeper well and installing a submersible pump can help ensure years of clean and reliable water for your family.
How to Install/Replace
Once an initial well system is installed, replacements can be done by DIY enthusiasts. Disconnect the power at the circuit breaker and unscrew the well cap, then get a pitless connector wrench to unscrew the pitless connector that's on the side of the well casing.
With help from at least one other person, pull out the old pump, taking care to avoid damaging wires. Remove the torque arrestor, then disconnect the wiring, water pipes, and safety line.
Depending on the condition of your existing system, you may need to buy and install new wiring. Any wire connections that must be placed inside the well casing should be soldered, then protected with waterproof heat-shrink tubing.
Reconnect the water pipe, safety line, and torque arrestor, then test the pump in a 10-15-gallon container of water if possible. If everything works, disconnect the power again and lower the pump back into place. Line the pitless connector up and push it back into place, gently hitting the wrench with a hammer as needed to secure it in place.
Adjust the pressure tank and well pump switch as necessary to deal with any differences in your new pump. You may need to disinfect your well if it hasn't been cleaned recently, but if not, your new pump is fully ready to use.
How long do submersible well pumps last?
Submersible well pumps typically last 8-10 years but may last up to 25 in optimal conditions. Pumps may burn out sooner if the water has many fine particles or if the pump is not properly maintained.
Can you use a submersible pump in a shallow well?
Submersible pumps can be used in shallow wells, but some models may provide excessive PSI at lower depths. If you want to use a submersible pump in a shallow well, look for one that has low horsepower and is rated for use up to 100-150 feet.
Can submersible pumps run continuously?
Though submersible pumps are technically capable of running continuously, they should not need to. Well pumps are designed to turn on when water pressure in the pipes or pressure tank drops. When all water fixtures are shut off, the well pump should refill the pressure tank and shut off in a few minutes.
How deep can a submersible pump go?
Submersible pumps' depth limits vary based on model, but some work at depths over 600 feet. Keep in mind that the gallons per minute and PSI of pumps is reduced at lower depths, so it can be a challenge to get above 10 gallons per minute even with high horsepower.