The Water Treatment Process
Water is pumped from the Alameda Bridge diversion site into two
pre-sedimentation ponds, where the water will be held for 24 hours.
Each pond hold approximately 50 million gallons.
From the ponds, the water is pumped to the main processing area.
A cagulant is mixd with the water to bind with sediments and cause
them to settle out.
Water then flows to ozone contactors, where ozone is added to
oxidize any organics and kill bacteria.
Remaining turbidity (muddiness) is filtered out using granular
activated carbon, which also absorbs any remianing organic material.
Finished water storage tanks hold the water before it is treated
with fluoride and chlorine and pumped into the distribution system
for delivery to homes and businesses.
Sediments (dirt) removed from the water are held in drying beds
and then trucked away for disposal or use as backfill.
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