ALCOSAN is committed to serving the region and providing answers to questions about our work.

Your local water and sewer authority and ALCOSAN are separate organizations, each with distinct functions and responsibilities. ALCOSAN is responsible for the collection, treatment and billing of wastewater. Your local provider is responsible for water treatment, local infrastructure issues (pipes near your home or business), and basement backups/flooding. ALCOSAN does not set, collect or monitor municipal surcharges and does not have the ability to shut off water service for non-payment of wastewater charges.

ALCOSAN has a variety of publications available for free upon request. Please contact the ALCOSAN Communications Department at 412-734-6236 or email to for more information.

To learn more about ALCOSAN and the environment, visit the  Environmental Stewardship page. To learn more about the Clean Water Plan and how ALCOSAN is working to keep our rivers clean, visit the Our Plan page.

You can reach ALCOSAN by phone by calling 412-766-4810. Please see the Contact Us page for additional information.

Contact your municipality’s public works department or sewer authority with questions, concerns or to report a sewer back-up. Visit the Service Area Map to find out how to contact your municipality or sewer authority.


You can apply for employment with ALCOSAN by completing an online employment application. Please see the Careers page for additional information.

For questions regarding your ALCOSAN bill, please either contact the biller listed on your invoice or call ALCOSAN at 412-766-6696 between 9 a.m. and 4 p.m. Monday through Friday, or write to the following address:


Customer Service and Billing Department
3300 Preble Avenue
Pittsburgh, PA 15233

Please make sure to include your account number on any correspondence.

 Yes, we are happy to offer assistance to eligible homeowners through our Clean Water Assistance Fund

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