⟁ Arizona Well Data field records · 2026 survey

Arizona Well Data › Pinal County › Mammoth (85618)

Mammoth, AZ (85618): well depth, water level & drilling cost

✓ 786 ADWR records · Pinal County

125 ftmedian well depth
80 ft–330 fttypical depth range
43 ftmedian static water level
20 gpmmedian yield (346 tests)

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How deep are wells in and around Mammoth (85618), Arizona?

The median drilled well depth in and around Mammoth (85618) is 125 ft, based on 575 wells with recorded depths in the state ADWR database. Half fall between 80 ft and 330 ft; 90% are shallower than 550 ft.

How much does it cost to drill a well in and around Mammoth (85618)?

Applying published per-foot rates to the local median depth of 125 ft: drilling and casing alone typically runs $3,125–$8,125; a complete system including pump, pressure tank, and hookup typically runs $7,500–$12,500. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Mammoth (85618)?

The median static water level is 43 ft below ground surface (middle half of wells: 22 ft–153 ft), from 496 measurements.

Drilled depth distribution

0–50 ft 63 50–100 ft 120 100–150 ft 128 150–200 ft 50 200–300 ft 41 300–400 ft 58 400–600 ft 65 600+ ft 50
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Part of Pinal County well records.

Method: medians computed from ADWR records (ADWR registered wells, excluding the 51,744 registrations the department has cancelled; depths 0-5,000 ft), grouped by ZIP from the recorded address. Cost estimate applies published per-foot ranges to the local median depth — full methodology & sources.