As part of Pittsburgh Water’s ongoing effort to modernize aging infrastructure, our team supported multiple sewer rehabilitation projects that enhanced system reliability, minimized risk, and extended the useful life of critical assets.

2022 Sewer Reconstruction

After a sewer failure triggered by a landslide in Pittsburgh’s Lincoln/Lemington/Belmar area, PGH2o needed a long-term solution to replace a costly temporary bypass. GPD assessed the site’s geotechnical conditions and evaluated multiple alternatives, ultimately recommending a realignment that avoided unstable slopes and enabled gravity flow to a nearby sewershed. This approach minimized risk, improved reliability, and eliminated the need for ongoing bypass pumping. The project was completed quickly, delivering substantial operational savings and long-term resilience.

2023 Small Diameter Sewer Rehabilitation

This project covered 37,547 linear feet of 6- to 18-inch sanitary sewers in Pittsburgh’s Carrick neighborhood. GPD designed the CIPP lining of over 34,000 feet of pipe, 41 point repairs, three full pipe replacements, 19 manhole adjustments, and 12 new manholes. Trenchless methods extended service life by 50+ years, reduced I&I, and improved system performance.

2025 Small Diameter Sewer Rehabilitation

PGH2O aimed to inspect and assess nearly 44,000 feet of sanitary sewers, identify defects, and use trenchless rehabilitation to minimize surface disruption in Pittsburgh’s Arlington neighborhood. The team conducted extensive data reviews and field investigations to guide risk-based rehabilitation strategies. Their work not only met PGH2O’s goals but also extended the inflow and infiltration (I&I), improved maintenance access, and extended the sewer system’s life by over 50 years.