Normally the plumbing runs underground but those people have a trench solution likely because they added a bunch of trailers to the property and more lines were out. There's probably some weird government rules at play here. Like they don't want to dig pipes into the ground because screwing with their grandfathered in lagoon would be "state problems" level illegal whereas right now it's "municipality problems" level illegal and the latter doesn't wanna stomp them with the jackboot for obvious political reasons.
The clean water act and it's knock on rules really act as a huge impediment to "it won't make it compliant, but it will make it a hell of a lot better" fixes in cases like this.
The original agreement under the Biden admin, which to be clear, the President doesn't personally oversee these kinds of agreements, this is sort of all within the DOJ, but the original agreement doesn't even require them to build the sewers. It literally just requires them to run a public health campaign and not issue fines.
Whatever the dollar number is, it's likely some insane punitive number (hundreds to thousands per day) that nobody could ever pay and never will actually be enforced, it's basically just a threat and you wind up going to court over it in the end or you fix it and they drop it or fine you a reasonable amount (thank the 8th amendment).
This sounds like a standoff situation. Municipality wants trailer park to pay for its own sewer. Trailer park can't afford it. Municipality fines them. Trailer park gives them the bird because they're so poor they're basically judgement proof. Municipality doesn't push the issue because if they take it and kick them all out then they will pick up the tab for remediating, etc, etc.
What should have happened in the original agreement is that the fed pays for the sewers at a very cheap rate and the municipality does the work and owns it for eg 10-20 years.
That's actually a really common agreement. I don't know why DOJ had such a derp moment here and instead demanded billboards about health risks for people who don't have the money for basic medical care much less exploratory lab testing.
Even better, the Trump administration canceled [1] an attempt to right that wrong, citing that it was “DEI.”
0: https://www.huffpost.com/entry/sanitation-open-sewers-black-...
1: https://apnews.com/article/justice-department-environmental-...