There are a multitude of causes for low water pressure in outdoor spigots. Normally, the water just gushes right out of them, but a soft trickle happens if the spigot itself is old or damaged. If parts are misplaced or worn down, the water pressure won't be as high as it should be. More complex causes include ruptured water lines and problems with the water meter.

No, you can’t drain your sump pump into your home’s sewer system. In fact, it’s against the law in many places because dumping extra water into a municipal water system can disrupt or overwhelm the treatment process. And for similar reasons, you shouldn’t discharge a sump pump into your septic system, either.

Trenchless sewer replacements are actually a great solution for sewer lines located under concrete. A professional can still sleeve and burst old piping to make room for a new one without having to dig up your slab.

Plumbing repairs cost $180 to $500, depending on the scope and urgency of the issue. A knocking pipe is usually caused by a problem with the water pressure or air pockets, so the costs will likely fall closer to the low end of that range. Pipe replacement will likely cost more than that since it’s a major project.