Yeah, this is one of those problems that leadership just ignores and passes to the next person.
"Reports of sewage leaking over the border into the San Diego region stretch back at least to the 1930s. Significant improvements were made in the 1990s, but Tijuana's wastewater facilities haven't kept pace with growth while many poorer communities remain unconnected to the city's sewer system." https://www.latimes.com/california/story/2023-02-25/tijuana-...