Water Quality
The Water Authority and Water Quality
The San Diego County Water Authority is the water wholesaler to 24 member agencies
and serves approximately 90% of the county’s water needs through a diversified
water portfolio. The Water Authority receives both treated and untreated water
from the Metropolitan
Water District (MWD). This water originates from the Colorado River and
from bay-delta area of northern California Untreated water is delivered to agencies
that have their own treatment facilities and can also be delivered into many
of the counties reservoirs.
Untreated water is also delivered to the Water Authority’s treatment plant.
This plant utilizes the latest technology to produce up to 100 million gallons
of potable water each day. Whether the water is treated by MWD, the Water Authority
or a local agency, all treated water served in San Diego County meets or exceeds
rigorous state and federal water quality regulations.
Water Authority member agencies that own and operate treatment plants within the county are:
In addition to untreated water deliveries, the Water Authority also purchases
treated water from the Metropolitan
Water District (MWD), from the Helix Water District, from the City of Oceanside,
from the Olivenhain Municipal Water District, from the City of San Diego, and
from the City of Poway. These treated water sources can be delivered directly
into member agency’s distribution systems for customer use.
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