You're not wrong. We routinely ignore things like this:
https://www.theguardian.com/us-news/2017/sep/05/hookworm-low...> The average income is just $18,046 (£13,850) a year, and almost a third of the population live below the official US poverty line. The most elementary waste disposal infrastructure is often non-existent.
> Some 73% of residents included in the Baylor survey reported that they had been exposed to raw sewage washing back into their homes as a result of faulty septic tanks or waste pipes becoming overwhelmed in torrential rains.
...
> An eight-year-old child was sitting on the stoop of one of the trailers. Below him a white pipe ran from his house, across the yard just a few feet away from a basketball hoop, and into a copse of pine and sweet gum trees.
> The pipe was cracked in several places and stopped just inside the copse, barely 30ft from the house, dripping ooze into a viscous pool the color of oil. Directly above the sewage pool, a separate narrow-gauge pipe ran up to the house, which turned out to be the main channel carrying drinking water to the residents.
> The open sewer was festooned with mosquitoes, and a long cordon of ants could be seen trailing along the waste pipe from the house. At the end of the pool nearest the house the treacly fluid was glistening in the dappled sunlight – a closer look revealed that it was actually moving, its human effluence heaving and churning with thousands of worms.