Know before you drill

Find a Well Locator

Before a rig ever mobilizes, a well locator surveys your land to find the best place to drill. Using geophysical instruments - not guesswork - they pinpoint the most promising water target, estimate how deep you will need to go, and project likely yield. That is how you cut dry holes and drill smarter.

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What a well locator does

Drilling is the single biggest cost of a water well, and a dry or low-yield hole is money in the ground. A well locator lowers that risk. They walk your property with geophysical gear - resistivity, electromagnetics, and seismic methods - to map the rock and water-bearing zones below, then interpret the data into a plan: where to drill, how deep to expect water, and how much yield the site is likely to give.

This is not water witching or dowsing. A rod or pendulum has no scientific basis; a geophysical survey measures the actual properties of the ground and produces a documented, repeatable interpretation you can hand to your driller.

  • Best drill site

    A specific, surveyed target - not a guess

  • Estimated depth

    How far down to plan for water

  • Projected yield

    What the site is likely to produce

Example Precision Well Locating survey report: proposed drilling depth and layer interpretation with a target fracture corridor and projected water yield
A sample survey report: interpreted rock layers, a target water zone, and a recommended drilling depth and yield range. (Example from Precision Well Locating.)

Well locators by state

A hand-picked list of geophysical water-survey providers. Know a locator who should be here?Tell us.

Arizona

Precision Well Locating logo

Precision Well Locating

We find water.

Precision Well Locating uses advanced geophysical technology to take the guesswork out of well drilling. By identifying optimal underground water locations before drilling begins, they help landowners reduce risk, avoid unnecessary costs, and improve the likelihood of a productive well. Their detailed survey reports provide precise drilling locations, estimated depths, and projected water yield, giving residential, agricultural, and commercial clients the confidence to drill smarter.

  • Geophysical water survey
  • Optimal well-site location
  • Estimated drilling depth
  • Projected water yield
Serves ArizonaFree estimates
928-583-9795
Request a free estimate

Well locating questions

What is a well locator?

A well locator is a company that surveys your land to find the best place to drill a water well before drilling starts. Modern locators use geophysical instruments (resistivity, electromagnetics, and seismic methods) to map underground rock and water-bearing zones, then hand you a report with a recommended drill site, estimated depth, and projected yield.

Is a geophysical survey the same as water witching or dowsing?

No. Water witching (dowsing) uses a rod or pendulum and has no scientific backing. A geophysical survey measures the actual physical properties of the ground with instruments and produces a repeatable, documented interpretation. It is the professional, science-based way to find water before you drill.

Why survey before drilling?

Drilling is the biggest cost of a water well, and a dry or low-yield hole is expensive. A survey lowers the odds of a bad site: it points the rig at the most promising target, estimates how deep to go, and sets expectations on yield - so you spend drilling budget where it is most likely to pay off.

How do I find a driller after the survey?

Once you have a recommended site and target depth, use the DrillerDB directory to find licensed well drillers in your state and request quotes. The survey report gives the driller a clear target to work from.

Got your survey? Find a driller.

With a recommended site and target depth in hand, line up a licensed well driller and get quotes.

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Last updated 2026-07-15. Listings are a free resource; DrillerDB does not endorse or guarantee any provider. Always confirm scope and pricing directly.