Sonoma Valley GSA Contracted Staff

Contracted Staff

Valley of the Moon Water District general manager Dan Muelrath serves as the administrator, through a contract with the Sonoma Valley GSA. The administrator oversees scheduling and staffing board and advisory committee meetings, the budget, contracts and day-to-day functioning of the GSA. To contact Dan Muelrath, email

Jay Jasperse, chief engineer and groundwater manager for the Sonoma County Water Agency, serves as plan manager. Through a contract with the GSA, the Water Agency provides technical services to develop the Groundwater Sustainability Plan. The Water Agency also provides grant writing and outreach and communication services for the GSA. To contact the plan manager, email For questions on outreach and communications, contact or 524-8378.