I seriously doubt 3,000 gallons of water in someone's garage poses any risk to the neighbors. It's not something I would want my upstairs neighbor to have, but he's in a house. Realistically it's probably .3-4" of water spread out over his property. Much less than a heavy rain storm. There's no way that would have an effect on the sewer or power systems. They just had a sewer line bust in my town and in 2 hours it leeched 460,000 gallons. It barely made the news and only did so because it had broken before and made a sewage geyser (sounds like Mike Rowe should help fix it). 3,000 gal is literally a drop in the bucket.
1, He empties it one day = the side walls now have the Earth pressure on the outside but nothing on the inside and so collapse inwards taking down you neighbors walls. Why do you think they put those big metal retaining walls down the side of excavations in the street?
2, It leaks and 250,000l of water flows out under the house washing away the soil that the foundations stand on. His neighbours house falls into the hole.
3, The houses were built on a concrete raft (common where the ground is unstable) he has just cut a big hole in the raft, it cracks and his nieghbours house falls over.
That's ignoring the risks from dumping that much water into the drainage system, leaking chemicals, humidity/damp etc.
What? Problems can happen sure, but lets not exaggerate.
1, I can't say for sure, but I think it's a free standing garage. Plus it was standing just fine without water pressure on it before he started. Plus water barely puts any pressure outward anyway (most of the pressure is right near the floor).
2, 3,000 gallons is 11,000l. So how is it going to leak 250,000l of water? I don't think any residential water meter could put out that much water in a week! And that for a full pressure leak. So totally bogus.
3, he specifically did not cut into the slab.
That much water? What much water? He's not dumping anything. And if it was a regular pool he would be doing exactly that, without you getting all worked up over it.
You want to explain problems with what he did - fine. But don't exaggerate, and make up non-existent problems.
Sorry I misread the article - from the picture I thought he had dug a hole in the foundations of a building for an underground pool.
A surface pool (even inside a garage) is no more of a risk than a free standing pool in the garden. And the 25,000 was in lbs not kg.
... It's an above ground pool. The water would hit the concrete garage floor and go outside (and probably some of it going directly down the inside drain) down the driveway and into the gutter. But instead if it went into his yard it would be nothing more than a rain storm--no houses are washing away.
