Well & Groundwater Services in Mesa, Arizona

Mesa is Arizona’s third-largest city and the eastern anchor of the Phoenix metro. Like Phoenix, the majority of Mesa residents receive treated water from the municipal utility (Mesa Water Resources Division), but the city’s eastern and southeastern edges grade into unincorporated Maricopa County ranchette country where private wells remain common. Three licensed well drilling contractors operate in Mesa, serving both in-city needs and the broader east Valley region.

Mesa’s Location in the Phoenix AMA

Mesa sits in the eastern portion of the Salt River Valley, with the Usery Mountains and Superstition Mountains visible to the east. The aquifer beneath Mesa is the same multilayered alluvial system that underlies the entire Phoenix metro, though in the eastern portions of the city, the basin shallows somewhat where it approaches the Superstition foothills.

Residential wells in Mesa and the surrounding east Valley typically run 400–750 feet deep. The area has been extensively developed, and land use records from ADWR show a dense network of existing wells throughout the Maricopa County Assessor’s east district.

Water Quality in Mesa Area Wells

• Hardness: Very hard (350–500 mg/L); water softeners are standard.
• TDS: 700–1,400 mg/L; RO for drinking water is common.
• Arsenic: Generally moderate risk in the Mesa area; test all new wells before use.
• PFAS: Not a primary concern in the Mesa area (unlike northwest Phoenix near Luke AFB), but testing is reasonable for any new well.

Contractors in Mesa

• Arizona Preston Drilling LLC — (480) 984-4747 — azprestondrilling.com — East Valley drilling specialist
• Resilient Drilling Services, LLC — (602) 218-8848 — resilientdrilling.com
• Weber Water Resources LLC — (480) 961-1141 — weberwaterresources.com

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