Expanding the wet weather treatment capacity by enlarging existing plant facilities has been a cornerstone in ALCOSAN’s strategy for reducing sewer overflows. This strategy dates to the 1996 Act 537 Plan which envisioned phased plant expansion and upgrades to reduce overflows.
As a result of expanding, the current capacity of 250 million gallons per day (mgd) will be increased to 480 mgd by the end of 2025 and to 600 mgd by the end of 2029. This additional capacity will help reduce the number of overflows caused by excess stormwater entering the system.
Construction for the current phase of ALCOSAN’s Plant Expansion Program has been under way since 2019.
The Plant Expansion Program has been broken down into several design and construction packages, so that the construction can be phased in a manageable and timely manner over the next decade. The packages include:
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