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The federal government awarded a $1.1 million contract to an Ohio company to conduct a pilot project deploying a technology to kill bacteria and eliminate odors in the sewage-tainted Tijuana River. It failed, in large part because the company had never used the technology in an environment with such a large amount of solid waste pollution and with unpredictable changes in water flow.
The company, Greenwater Services, uses a nanobubble ozone technology (NBOT) primarily to attack harmful algae blooms in slow-moving or still water, such as lakes and ponds. The project at the international border showed the company’s equipment was ill-prepared for the conditions that plague the region.
The Tijuana River has faced severe water quality challenges for years as untreated or partially treated wastewater, stormwater runoff and industrial discharge cross the border from Mexico, contributing to coastal pollution, beach closures and degraded habitat. The chronic contamination has created significant public health, environmental and economic impacts for communities in San Diego County and officials at all levels of government have sought ways to mitigate the crisis.
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