Contact Us
ATTN: Office of Public Affairs
U.S. International Boundary and Water Commission
4191 N. Mesa St.
El Paso, Texas 79902-1423
United States
Email:
pao@ibwc.gov
REGIONAL UPDATES
August 19, 2026 - From X: Repairs to the South Bay International Wastewater Treatment Plant
August 7, 2026 - USIBWC Reports Transboundary Flow Caused By Thunderstorms
July 1, 2026 - EPA, USIBWC Release Quarterly Update on Implementation of 100% Solution to Permanently End Tijuana River Sewage Crisis
June 4, 2026 - Tijuana's Parallel Gravity Line Pipe Repair Complete
June 2, 2026 - USIBWC handles heavy wastewater flows during Tijuana pipeline repair
May 31, 2026 - USIBWC commissioner pushes Mexico to expedite pipeline repairs, keep sewage out of Tijuana river
May 30, 2026 - USIBWC responds to another break in Tijuana’s parallel gravity line
May 16, 2026 - USIBWC, EPA efforts prevent transboundary flows as Tijuana’s parallel gravity line repaired
May 15, 2026 - USIBWC continues work to reduce impacts of emergency repairs at Tijuana’s parallel gravity line
May 14, 2026 - USIBWC working to reduce impacts of emergency repairs at Tijuana’s parallel gravity line
May 6, 2026 - Update - CILA suspends PBCILA pump station operations
May 5, 2026 - CILA suspends PBCILA pump station operations
April 28, 2026 - Mexican Press Release PBCILA Pump operational
April 27, 2026 - Mexican Press Release PBCILA Pump Suspension
April 17, 2026 - CILA suspends PBCILA pump station operations for repairs
April 14, 2026 - Update: CILA suspends PBCILA pump station operations
April 13, 2026 - CILA suspends PBCILA pump station operations
April 10, 2026 -Tijuana sanitation utility suspends PB1 pump station
April 7, 2026 - Mexican IBWC Resumes Operations at PBCILA Pumping Station
March 17, 2026 - USIBWC Reports Transboundary Flow at Stewarts Drain
February 10, 2026 - USIBWC Reports Transboundary Flow at Stewart's Drain
December 19, 2025 - USIBWC Successfully Completes Ozone Pilot Project in Tijuana River
December 15, 2025 - United States and Mexico Sign Agreement to Address Border Sanitation Problem at San Diego California - Tijuana, Baja California
Novemeber 21, 2025 - EPA Releases First Quarterly Public Update on Progress Toward Implementing a Permanent 100% Solution to Tijuana River Sewage Crisis
October 30, 2025 - Trump EPA Announces Additional Construction Timeline Reductions for Infrastructure Projects Aimed at Cleaning Up the Tijuana River Valley
August 29, 2025 - EPA Administrator Op-Ed: Quick Progress in Repairs to Address Tijuana River Sewage Crisis
August 28, 2025 - Trump Administration Achieves 100-Day Goal of Increasing San Diego Plant Capacity
July 24, 2025 - USIBWC Commissioner Statement on Tijuana River Sewage Memorandum of Understanding
June 12, 2025 - Moving Fast and Fixing Things: USIBWC Focused on Infrastructure Improvements and Tijuana River Pollution
May 20, 2025 - USIBWC and EPA Launch Fast-Track Expansion To Address Tijuana River Water and Air Quality Concerns
List of acronyms and definitions:
IBWC - Both sections of the International Boundary & Water Commission (Collective body)
USIBWC – United States Section, International Boundary & Water Commission (U.S. entity)
CILA – Mexican Section, International Boundary & Water Commission (Mexican entity)
EPA – United States Environmental Protection Agency (U.S. Agency)
NADBANK – North American Development Bank (U.S. entity)
SBIWTP – South Bay International Wastewater Treatment Plant (U.S. owned)
SEPROA – Secretaría para el Manejo, Saneamiento y Protección del Agua; Baja California’s state water agency responsible for water-resource management, sanitation, and water protection. (Mexican entity)
SAB – San Antonio De Los Buenos Wastewater Treatment Plant (Mexican owned)
Parallel Gravity Line – Gravity-flow pipeline that carries wastewater from the PB-1 area to downstream treatment or discharge facilities. (Mexican owned)
PBCILA – Pumping Plant of CILA (Comisión Internacional de Límites y Aguas); a pump station that diverts Tijuana River dry-weather flows into the wastewater system. (Mexican owned)
PB-1 – Pumping Plant No. 1; a major pump station that conveys Tijuana wastewater to downstream treatment or discharge facilities. (Mexican owned)
PB-1A – Pumping Plant No. 1A; a pump station associated with the PB-1 system that conveys diverted wastewater flows. (Mexican owned)
La Morita – La Morita Wastewater Treatment Plant; a facility that treats municipal wastewater. (Mexican owned)
Carranza Collector – Major sewer line that collects and conveys wastewater from its service area. (Mexican owned)
Insurgentes Collector – Major sewer line that conveys wastewater to downstream infrastructure. (Mexican owned)
International Collector – Major trunk sewer that conveys wastewater toward the border-area treatment system. (Mexican owned)
Poniente Interceptor – West Interceptor; a large sewer line that receives flow from smaller western Tijuana collectors. (Mexican owned)
Oriente Interceptor – East Interceptor; a large sewer line that receives flow from smaller eastern Tijuana collectors. (Mexican owned)
Oriente Collector – East Collector; a sewer line that gathers wastewater in eastern Tijuana. (Mexican owned)
Arturo Herrera – Arturo Herrera Wastewater Treatment Plant; a facility that treats municipal wastewater. (Mexican owned)
O&M – Operations and Maintenance; the routine operation, inspection, repair, and upkeep of infrastructure.
MGD – Million Gallons per Day; a measure of water or wastewater flow volume.
Workgroup - A group of agencies and technical staff coordinating on shared wastewater, water-quality, or infrastructure issues.
Minute 328 - A 2022 U.S.–Mexico IBWC agreement establishing priority sanitation infrastructure projects in San Diego–Tijuana.
Minute 333 - A 2025 U.S.–Mexico IBWC agreement expanding long-term actions to address the San Diego–Tijuana border sanitation problem.