Well & Groundwater Services in Tucson, AZ

Well & Groundwater Services in Tucson, Arizona

Tucson is one of the driest major cities in the United States, receiving only 12 inches of annual precipitation yet sustaining a metro population of over one million. The city’s water supply mix has shifted dramatically over the past two decades: Tucson Water now delivers primarily Colorado River water delivered by the Central Arizona Project (CAP), which is treated and sometimes recharged underground before distribution. But significant portions of the Tucson metro — rural areas, older agricultural parcels, and communities beyond the utility service boundary — remain on private well water.

Nine licensed well and pump contractors are based in Tucson, offering the most comprehensive groundwater service market in southern Arizona.

Tucson’s Groundwater History

Tucson was entirely dependent on groundwater until CAP water delivery began in 1992. The city pumped so aggressively that water tables in parts of the central basin dropped 100–200 feet below historical levels. The shift to CAP water, combined with the Clearwater Renewable Resources Facility’s underground recharge operations, has partially reversed those declines in some areas.

For rural Tucson area properties, groundwater remains the primary supply. Typical well depths in the Tucson basin run 200–600 feet, with most production from sandy gravel layers in the 200–400 foot range.

Contamination Zones in Tucson

Tucson has two significant groundwater contamination legacies that well owners should know about:

Tucson International Airport Area Superfund Site: Multiple TCE (trichloroethylene) plumes in the southeastern Tucson basin, originating from 1950s–1970s industrial operations and military activities. ADEQ and Tucson Water provide alternative water supplies to many affected properties, but if your well is in southeastern Tucson (roughly south of I-10, west of Swan, east of Mission Road), TCE testing is essential before use.

Davis-Monthan AFB PFAS Plume: The Air Force has documented PFAS contamination from firefighting foam use at Davis-Monthan. The plume extends beyond the base boundary in some directions. ADEQ maintains a public map of the affected area.

All Contractors in Tucson

Well Drillers

BJ Drilling Company Inc — (520) 586-3282 — bjdrilling.com
Western Water Wells LLC — (520) 308-4047 — westernwells.com
Farwest Pump Company — (520) 293-9778 — farwestwell.com
Geomechanics Southwest Inc — (520) 889-7787 — gsidrilling.com — Specialty environmental and geotechnical drilling
Reliant Well Drilling and Pump Corp — (520) 293-9778 — reliantpump.services
Altar Drilling Inc — (520) 882-0384
Mike’s Drilling, LLC — (520) 399-2781 — mikesdrillingaz.com
Ironwood Well Service — (520) 261-4516 — ironwoodwell.com