Emergency repairs began Thursday night on a leaking wastewater pipe in Tijuana, which may result in stronger odors, increased wastewater, and potential beach closures, the US International Boundary and Water Commission (IBWC) reports. The repair on the leaking Parallel Gravity Line is expected to take at least 24 hours. During the repair window, two pump stations — PBCILA and PB1 — will be taken offline, rerouting flow from the Tijuana sanitation system to the South Bay International Wastewater Treatment Plant. The IBWC warned that area residents may notice increased wastewater and stronger odors along the Tijuana River Channel as a result. Transboundary flows, which have been a chronic driver of the ongoing sewage crisis that has prompted beach closures from Imperial Beach to Coronado for years, remain a concern.