California Water Service Group Elevates Two Executives to Vice President Roles
Event summary
- Tamara S. Johnson promoted to Vice President, California Operations, effective July 1, 2026.
- Gregory D. Shimansky promoted to Vice President, Rates and Regulatory Affairs, effective July 1, 2026.
- Johnson brings 40 years of public water utility experience, including 21 years at California Water Service Group.
- Shimansky succeeds Greg A. Milleman, who is retiring after a 10-year career at the Group.
The big picture
The promotions reflect California Water Service Group's response to the growing complexity of water utility operations and regulatory environments. With over 2.1 million customers across five states, the Group is positioning itself to balance affordability with necessary infrastructure investments. The moves come amid increasing scrutiny on utility rates and service reliability, highlighting the strategic importance of regulatory affairs and operational efficiency.
What we're watching
- Regulatory Strategy
- How Shimansky's experience will shape the Group's approach to rate designs and regulatory mechanisms.
- Operational Scaling
- Whether Johnson can manage the increasing complexity of water utility operations in California.
- Leadership Continuity
- The pace at which the new executives integrate and address the challenges of a retiring workforce.
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