Valenzuela, Philippines

With a population of 725,173, Valenzuela is one of the most densely populated cities in the Philippines. While its location just 14 kilometers north of Manila makes it an attractive option, the heavy bureaucracy and persistent flooding issues are significant drawbacks. The tax burden is heavy, and the city's Tullahan River has been severely degraded by industrial pollution, leaving residents vulnerable to waterborne diseases like dengue and leptospirosis. Valenzuela may be best suited for those willing to navigate its administrative headaches in exchange for proximity to the capital region.