WATER SOURCES
WHERE DOES OUR WATER COME FROM?
SUPPLEMENTAL
SURFACE WATER
State Water Project Table A Allocation
and Supplemental Water Purchases
Bay Delta
San Luis Reservoir stores State Water and
supplemental water supplies.
California Aqueduct and the Coastal
Branch Pipeline convey water from San Luis
Reservoir to Lake Cachuma.
TABLE A
IMPORTED WATER AND
SUPPLEMENTAL WATER
California
Aqueduct
Sierras
San Luis
Reservoir
LOCAL SURFACE WATER
Lake Cachuma (A Primary Water Source)
Tecolote Tunnel carries water from Lake Cachuma
6.4 miles through the mountains to the South Coast.
South Coast Conduit pipeline conveys water from
Tecolote Tunnel across the South Coast, from Goleta
to Carpinteria.
Coastal
Branch
Pipeline
LAKE
CACHUMA
JAMESON
LAKE
Santa Ynez River
Cater Treatment Plant. City of Santa Barbara
provides treated water to Montecito Water District
via the South Coast Conduit.
Jameson Lake (A Primary Water Source)
Doulton Tunnel carries water from Jameson Lake,
and water seeps into it providing additional supply.
Bella Vista and Doulton treatment plants
treat water from Jameson Lake and Doulton Tunnel
for Montecito Water District customers.
LOCAL GROUNDWATER
Groundwater wells. District groundwater
resources are limited, but provide an important
and reliable supply.
POTENTIAL NEW SOURCES
Two Potential New Water Sources
Desalinated water. Working toward participation in the regional use of the City of Santa Barbara’s
desalination facility. Tecolote
Tunnel
Goleta
DOULTON
TUNNEL
Storage
Tanks
Bella Vista
Treatment Plant
Lauro
Reservoir
Cater
Treatment Plant
Montecito
South
Coas
t
Cond
uit
Recycled Water Truck
Santa Barbara
District Office &
Demonstration
Garden
MWD
Customers
Recycled water. Permitting the import of recycled
water from other South Coast recycled water facilities,
and exploring development of recycled water in
Montecito.
CONSERVATION
Efficient use of water by customers has resulted
in a nearly 50% reduction in overall water use.
Desalination
Doulton
Treatment
Plant
Recycled Water
POTENTIAL WATER SOURCES
GROUNDWATER
Ortega Reservoir
Summerland