Pennsylvania's $3B Sewer Overhaul Sparks Rising Costs and Resident Concerns

Southwestern Pennsylvania is about to see its largest public works project in history. The Allegheny County Sanitary Authority (Alcosan) will begin a $3 billion scheme this summer to clean up local rivers and streams. The plan aims to stop billions of gallons of sewage from polluting waterways each year.

The project, however, is already facing financial challenges. Costs have risen before construction even starts, leaving residents with higher bills to cover the expenses. The project focuses on fixing the region’s outdated storm and sanitary sewer system. Currently, the system spills around 9 billion gallons of sewage-tainted water into rivers and streams annually. To tackle this, Alcosan will expand its treatment plant and build 18 miles of underground tunnels to capture and treat waste before it reaches waterways.

The authority has already spent $500 million increasing the treatment plant’s capacity. Now, the next phase involves digging 5 miles of tunnels along and beneath the Ohio River and the North Side. The Alcosan board recently approved $1.1 billion in contracts for this part of the work.

Despite the project’s importance, costs are rising fast. The Ohio River tunnel alone is about $200 million over initial estimates. With the entire project expected to take a decade, the final price tag will likely exceed the original $3 billion budget. The federal government has mandated the work but is not providing any funding.

Residents are already feeling the impact. Alcosan bills have gone up by 7% every year since 2019 to help fund the project. However, the full environmental effects of the scheme won’t be clear until completion. The project will take ten years to finish, with construction starting this summer. Once complete, it should drastically reduce sewage overflows into local waterways. For now, residents will continue paying higher rates as costs climb beyond the initial projections.