Water Sources

Quarterly Water Supply Update
Updated October 2024. A summary report for the District, provided by the General Manager.

Future Water Demand and Water Supply Options
Bachman Study, May, 2020. 

Water Year 2024 Projected Use by Source 3% groundwater 29% Lake Cachuma 18% Jameson Lake 13% Doulton Tunnel 37% WSA (Desal)
Relying on local water sources including desalination, Montecito Water District projects no need for State Water Project supplies through Water Year 2027.
Water Year 2025 Projected Water Use by Source

Diversified Portfolio of Water Sources. The District relies upon a diversified portfolio of water sources, namely Jameson Lake, Doulton Tunnel, groundwater, Cachuma Project, water imported through the State Water Project, supplemental purchases of water from around the state,  and Desalination secured through a 50-year contract with the City of Santa Barbara. While this last source is guaranteed under almost every circumstance, availability of all other sources varies depends upon hydrologic, environmental, and other conditions.

The District supplies water to the unincorporated communities of Montecito and Summerland, serving an estimated population of approximately 11,390 through approximately 4,600 service connections. Annual consumption is currently approximately 4,000 Acre Feet per Year (AFY) and must remain in compliance with State regulations.

For a detailed overview of the District's water sources and long-term plans, refer to the Urban Water Management Plan.