U.S. and Mexico Fast‑Track Tijuana River Fix

United States and Mexican officers signed a memorandum of understanding on July 24 to fast-track a number of cross‑border wastewater tasks to finish south-of-the-border sewage flows into the Tijuana River by the top of 2027. 

U.S. Environmental Safety Company Administrator Lee Zeldin met with Secretary of the Atmosphere and Nationwide Sources of Mexico Alicia Bárcena Ibarra on the Council of the Fee for Environmental Cooperation (CEC) signed the memorandum of understanding (MOU) in Mexico Metropolis.

The MOU consists of over a dozen infrastructure upgrades on either side of the border, with Mexico committing to 6 tasks by the top of 2025. Moreover, IBWC officers introduced that the capability of the South Bay Worldwide Wastewater Therapy Plant will now double to 50 million gallons per day by the top of 2027.

The settlement updates a proper bilateral work plan adopted by the Worldwide Boundary and Water Fee (IBWC), generally known as Minute 328 memorandum, signed in 2022.

When requested for touch upon the accelerated upgrades outlined within the MOU, EPA Administrator Lee Zeldin advised reporters throughout a press convention in Mexico Metropolis, “If any pace adjustments, that pace must be a pace to go quicker.” 

Zeldin known as the pact “a large environmental and nationwide safety win” in a release, noting that the MOU accounts for inhabitants development, operation and upkeep prices and different lengthy‑time period variables in design and funding choices.

Underneath the most recent accord, Mexico will allocate $93 million in funds to enhance wastewater services on the southern facet of the border. As well as, Mexico’s Comisión Estatal de Servicios Públicos de Tijuana and its federal water company, CONAGUA, will reroute 10 million gallons per day of handled effluent from the Arturo Herrera and La Morita vegetation. 

Different measures outlined within the procurement notices embrace restoring the Parallel Gravity Line and finishing six precedence tasks by the top of 2025, with all different upgrades—together with Pump Station 1 and cross-border assortment pipelines—due by December 31, 2027.

Officers count on that observe‑on minute to incorporate at the very least a dozen further measures—probably masking expanded conveyance capability, lagoon upgrades, supply‑management applications upriver in Tijuana and enhanced well being‑monitoring protocols—to safe a everlasting, sustainable answer.

Wanting forward, the MOU directs each governments to overview all undertaking schedules inside 100 days and negotiate a brand new IBWC minute by the top of this calendar yr.

In the meantime, as ENR reported in June, the U.S. Part of the IBWC awarded PCL Building, with Stantec Consulting Companies main design, a $42.4 million design-build contract for the South Bay Worldwide Wastewater Therapy Plant growth. That undertaking goals to extend capability from 25 million to 35 million gallons each day over 5 years. 

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Permits and right-of-way easements are additionally continuing in parallel. Each governments are finalizing cross-border easements and securing IBWC concurrence for pipeline alignments beneath the river channel. In the meantime, the San Diego Regional Water High quality Management Board oversees discharge permits and wetlands mitigation underneath California regulation, as regulatory filings present.

Cross-border sewage flows have pressured repeated closures of the southernmost portion of Imperial Seaside since 2021. San Diego Coastkeeper stories that total seashore closures have topped 1,000 days, with cross‑border flows peaking at 50 million gallons per day throughout storms.