Can a shallow well pump be used on a deep well?

No. A shallow-well suction pump cannot lift water from beyond its suction limit. A deep well needs a submersible pump or a deep-well jet configuration designed for the depth.

Does deep well always mean better water?

Not necessarily. Depth affects which pump is needed, not water quality on its own. Water from any well should be tested following EPA and CDC guidance.

Well Pumps

Deep Well vs. Shallow Well Pumps: Which Do You Have?

Water depth decides whether a shallow-well or deep-well pump is right. Here is how the two differ and how to tell which your home uses.

By Know Your Well Water Editorial TeamReviewed October 29, 20262 min read

Quick Answer

The difference comes down to how far below the surface the water sits. Shallow-well setups use a surface jet pump that relies on suction and work where water is roughly 25 feet or less below the pump. Deep wells use a submersible pump (or a deep-well jet configuration) to lift water from much farther down, because suction alone cannot reach that deep.

Why depth decides the pump

Suction has a hard limit: atmospheric pressure can only lift water so far up a pipe, which is why shallow-well jet pumps are restricted to relatively shallow water. Deep wells get around this by placing a submersible pump below the water and pushing water up, or by using a deep-well jet assembly. The water level — not just the well’s total depth — is what matters.

Side-by-side

Feature	Shallow well	Deep well
Typical pump	Surface jet pump	Submersible (or deep-well jet)
Lift method	Suction	Pushes from below
Water depth	Roughly 25 ft or less	Can be hundreds of feet
Access for service	Above ground, easier	Must be pulled from the well

Shallow vs. deep well pump setups

How to tell which you have

A visible pump bolted near the pressure tank suggests a shallow-well jet pump.
No above-ground pump, just a tank and controls, usually means a submersible in a deeper well.
Your well record or driller’s report lists the well depth and pump type.
A well professional can confirm from the wellhead and records.

Head and pressure link

When comparing depths and pressures, remember 1 psi ≈ 2.31 ft of head. That conversion helps a professional translate how deep the water sits into the pressure the pump must overcome.

Match the pump to the well

Whichever type you have, a replacement pump must be matched to the manufacturer’s pump curve and the well’s tested yield and water depth — not chosen by horsepower alone.

Frequently asked questions

Can a shallow well pump be used on a deep well?: No. A shallow-well suction pump cannot lift water from beyond its suction limit. A deep well needs a submersible pump or a deep-well jet configuration designed for the depth.
Does deep well always mean better water?: Not necessarily. Depth affects which pump is needed, not water quality on its own. Water from any well should be tested following EPA and CDC guidance.

Sources & references

Protect Your Home’s Water: Private Wells — US EPA, accessed October 29, 2026
Private Ground Water Wells — CDC, accessed October 29, 2026

This guide is documentary research and general information, not a laboratory analysis or professional assessment of your specific well. See our disclaimer.