About US

serving California growers since 1989

History

In 1989, CalWest Rain was formed because a San Joaquin Valley farming company saw the need to have both an irrigation AND a pump company as a single supplier. Prior to that time, most operated as separate entities, irrigation or pumps, not both under one roof.

Thinking the idea had real merit, the grower approached our co-founders Larry Isheim and Jim Martin to help start the company. Larry’s expertise in design, installation and service of agricultural irrigation systems, combined with Jim’s expertise in pumps and well development.

After more than three decades, the founding formula for CalWest Rain still remains, providing high quality irrigation design and installation as well as complete service in pump design and installation from a single source. Established in the fall of 1989 with one office in Kerman, CalWest Rain has added additional locations in Paso Robles and Hanford.

From one of the largest well developing engines in the country to tiny drip emitters and advanced monitoring and control systems, CalWest Rain designs, installs and services it all. Additionally, as a member of the Irrigation Association®, CalWest Rain maintains a staff of Certified Irrigation Designers.

Jim Martin has been in the pump business for over 50 years. Jim has supported Fresno State by being a past president of Ag-One, and a fundraiser for the Bulldog Foundation. He is also an alumnus of Fresno State and Leadership Fresno. He is a former member of the Fresno County Grand Jury as well as a past board member of Hinds Hospice.

Larry Isheim has been in the irrigation business for more than 50 years, six of which were spent designing, installing and managing irrigation systems for a large diversified farming company specializing in tree fruit and vineyards. Larry is a Certified Irrigation Designer in Drip and Micro and has served on the advisory board of the Center for Irrigation Technology at California State University, Fresno.

Company Facts

As a company, CalWest Rain continues to adapt and change as farming practices, water management, and irrigation technology evolves. We are fully committed to maintaining an industry leading team with unmatched experience and backed by the latest tooling, equipment, and products to consistently deliver cost effective and innovative solutions to our customers.

  • Headquarters: Kerman, CA
  • Branch Locations: Paso Robles, CA and Hanford, CA
  • Employees: 90+
  • Certified Irrigation Designers
  • Turnkey Irrigation Systems
  • Design and Construction Services
  • Monitoring and Control Systems
  • Irrigation Maintenance and Repair
  • Full Service Parts Departments
  • Pumps and Pump Repair
  • Filter Repair Specialists
  • Well Services, Repair and Rehabilition
  • Program and Rebate Administration
  • DOWNLOAD: Preventive maintenance tip sheet
Products

CalWest Rain represents the industry's leading brands, including the companies that we know and trust: Netafim, Rivulis, Fresno Valves & Castings, Bowsmith, IrriTec, Bermad, Nelson, Morrill Industries, Spears, Olson, Yardney, Lakos, Rainbird, WeatherTec, Seametrics, McCrometer, MicroRain, Wiseconn, Pentair, Peerless, Berkeley, Cornell, Flowserve, Grundfos, Schneider Electric, Yaskawa, US Motors, Siemens, Caterpillar, Cummins, John Deere and more.