2026 Water Quality Report (Shareable)

IRVINE RANCH WATER DISTRICT WATER SOURCES

Where does your water come from? IRWD water comes from local groundwater, recycled water, local surface water (rainwater capture), and from imported water from Northern California and the Colorado River. Recycled water is not used for drinking but is an important water source that reduces demand for drinking water.

Shasta Lake

Lake Oroville

SACRAMENTO- SAN JOAQUIN RIVER DELTA

SACRAMENTO

SAN FRANCISCO

STATE WATER PROJECT (imported water)

GROUNDWATER BANKING

COLORADO RIVER AQUEDUCT (imported water)

PACIFIC OCEAN

LOS ANGELES

Lake Mathews

LOCAL GROUNDWATER

ORANGE COUNTY IRWD SERVICE AREA

SAN DIEGO

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IRWD Water Quality Report 2026

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