Since 1979, Hargis + Associates, Inc. (H+A) has provided hydrogeologic and engineering consulting services, specializing in all aspects of environmental investigation and remediation. H+A’s trustworthy reputation is built on our experience, integrity and service.



At H+A, our mission is to provide expert advice and solutions to our clients with integrity and outstanding service. We deliver this mission with an unparalleled level of quality inspired by collaboration and employee-ownership. For 40 years, the outcome has been practical and workable solutions, resulting in long-term client relationships.

Environmental Investigation & Remediation

Hargis + Associates has a proven record supporting public and private clients with the management of their environmental liabilities. The firm specializes in all aspects of environmental investigation and remediation. Also, H+A has expertise managing large multi-site environmental programs for both public agencies and major industrial clients. Learn more…

Groundwater Resources

Hargis + Associates can identify and develop groundwater resources for sustainable water supply projects. H+A engineers and hydrogeologists assist municipalities, water agencies, and private landowners to develop effective use of groundwater supplies through groundwater resource evaluations, impact and mitigation analysis, and water well and recharge basin design. Learn more…

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9171 Towne Center Dr., Suite 375

San Diego, CA 92122

(858) 455-6500


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Folsom, CA 95630

(916) 827-0114



1640 S. Stapley Dr., Suite 209

Mesa, AZ 85204

(480) 345-0888



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Tucson, AZ 85704

(520) 881-7300