ALCOSAN Clean Water Plan

Clean Water Plan

ALCOSAN is thrilled to announce the details of our modified consent decree and updated Clean Water Plan, approved recently by our government regulators. This comprehensive, $2 billion, long-term plan will significantly reduce the overflows of diluted, untreated wastewater into the region’s rivers. It is designed to be affordable, flexible enough to adapt to evolving technology and regional in scale. It will improve the water quality of our local waterways by: expanding the capacity of our North Side treatment plant; making efforts to assume ownership and maintenance of at least 200 miles of multi-municipal sewers; preventing stormwater and groundwater from entering the sewer system through the use of green technology and other source control methods; and upgrading conveyance systems and grey infrastructure.

ALCOSAN Clean Water Plan Full Document
The Clean Water Plan full document contains separated PDF's for downloading and viewing. Please be aware some documents are extremely large due to the amount of information they contain. You can review the full document here: Clean Water Plan Full Document

Consent Decree
The Consent Decree is a binding, legal documents that is certified by a federal judge and therefore recognized by the court. These legal documents may be viewed in PDF format visit the Consent Decree page.

ALCOSAN System Mapping
To view detailed maps of the ALCOSAN conveyance and treatment system, including sanitary and combined sewer outfalls, outfalls in the regional collection system as reported by customer municipalities, major water recreation areas in Allegheny County and continuous flowing streams and rivers listed as impaired by the Clean Water Act, please visit our System Mapping Page.

Sewer Overflow Advisory key: Wet Weather overflows have ceased. Rivers, streams and creeks may still be impaired. For more information:

Customer Care at ALCOSAN, we believe it's our duty and privilege to protect, recover and reuse our most valuable resources for the benefit of our customers.

Consent Decree: To comply with provisions set forth in the Clean Water Act, ALCOSAN must meet a series of requirements for planning, design and construction, operation and permitting. For more information

Watershed Education: Leave small leftovers of paint and solvents to dry rather than pouring them down the drain. Learn more

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3300 Preble Avenue
Pittsburgh, PA 15233
(412) 766-4810