Funny story I read long ago, about a landlord with a well AND city water in Lake County, Ohio.
Now the whole of Northeast Ohio is over a huge salt dome. Normally it doesn't affect the well water - the aquifer and the water table are above it. Lake Erie somehow doesn't percolate down there - and there's salt mining near the shore, and - I'm not sure - maybe even under the edge of the lake. International Salt - the salt is mostly sold for road treatment in winter.
So. There's this guy renting a home, where there's a well that's salty. Also city water from the nearest village. And there's a country club nearby, also pulling village water. I mean, PULLING. They had an irrigation system, and since they were far enough from the water plant, they illegally installed pumps to SUCK water out of the system. All homes tapped into the water system in the area would have faucets hissing from the suction. When they were watering, all that the resident could do was switch to the well and wash, bathe and flush with salt water.
He was sick of it, as you could imagine. So the weekend before moving out, a hot summer weekend, he hooked up BOTH the well and the city water system and let the irrigation pumps suck out the briny well water, onto their nice manicured greens.