Welcome to the Internet Connection Table of Contents

Travels to
Baja California
US-Mexico Border Water Quality projects:
International Wastewater
Treatment Plant (IWTP)
Impacts of the 
IWTP Ocean Outfall

More information about these pages:

A Traveller's Guide to 
Whale watching in 
San Ignacio Lagoon,
Baja California, Mexico

 International Wastewater Treatment Plant

This facility has operated in violation of its discharge permit since 1998, and is now the subject of litigation (State of California vs. federal government)

Impacts of the Ocean Outfall
Results of independent ocean monitoring tests conducted over the outfall connected to the IWTP. 


BajaWhales logoBaja Whales

A website for travellers interested in visiting Baja California Sur, Mexico, to see the gray whales at San Ignacio Lagoon. Includes background about development threats to the lagoon, links to professional outfitters and guide companies, explanations on how to hire local guides, and more.


photo of treatment facility located next to US-Mexico border fenceInternational Wastewater Treatment Plant

Background on the construction and operation of the IWTP that is located in San Diego and treats sewage from Tijuana, Mexico. Unfortunately, it accounts for nearly 50% of sewage permit violations in this region because it lacks secondary-level treatment facilities.

Impacts of the IWTP's Ocean Outfall image of chart showing locations of stations where ocean water samples were collected

The outfall is connected to the IWTP, and discharges partially treated sewage into 95 feet of water only a few miles from shore near the city of Imperial Beach.

The effluent causes high bacteria levels, odors and discoloration on the ocean surface when the sea water temperature cools during the winter months. A new program, using Coastal Radar (CODAR) will begin soon (Spring 2002) to track the migration of this sewage plume over the ocean surface.

All information on this website © Lori Saldana and represent my personal opinions only. For more information contact Lori Saldaña