What year did they start putting plumbing inside the walls of houses?

Friends of mine recently bought an old house where the plumbing is outside the walls (sinks, toilets, etc) and I was just curious of about how old the house is.

When a big city installs a plumbing system are there many models?

Do they say "We have 25 plumbing systems for sale?"
In Milwaukee Metro there are about 2 million people. Heavy rainfall, nearly torrential, can happen and produce twelve inches of water in less than 60 hours. Do the public vote on what kind of plumbing system we have? In the massive urban sprawl of Milwaukee, Waukesha, and Ozaukee counties you are "only safe if you’re on a hill" during flash floods. I would be willing to pay extra taxes to afford the best plumbing system.

How do prefabricated homes get proper plumbing and electric?

I am looking into purchasing a prefabricated home, not a manufactured or mobile home, the type you can put together yourself. I have briefly researched these types of homes online to get more information. However I still have a couple of questions. How is the plumbing and electric installed? Is that included with the house or is it an added expense and something you have to do on your own?

How do I do decorative exposed plumbing?

I’d like to add decorative exposed copper plumbing to my bathroom (for a funky industrial feel) but I have no resources to reference! Does anyone know where I can find some? Thanks!

How difficult is it to get electricity and plumbing for a backyard pond that is 33 feet away from the house?

According to my previous research about ponds, I will need an electricity and plumbing source for a pump in a pond. I would like my pond to be around 100 gallons maximum. So how difficult is it to bring electricity and plumbing to my desired location?

Thanks– any help will work!

How to diagnose plumbing issues in a slab foundation?

I am concerned there maybe some plumbing/water issues that are causing cracking in my slab foundation. Any idea as to how a plumber would determine if there are issues working with a slab?

How do I convert bathroom plumbing from a single sink to a double sink?

Do I need to go behind the drywall to change out the plumbing or can it be done outside of the wall?

Is hot water plumbing connected to the toilet plumbing?

I have a problem. I always flush my cig butts down the toilet and now there is a plumbing problem in my apt building. They will be turning off the hot water for repairs. Will It get traced back to me?

How do I stop my plumbing from rattling?

When my dishwasher is turned on, the house plumbing in the vicinity rattles violently. Turning on the nearby kitchen faucet attenuates the rattling slightly. The dishwasher is hooked up to the HOT water supply. This does not occur anywhere else except in a bathroom where the COLD water faucet caused some juddering when opened fully.

Where can I purchase a plumbing tool?

I have a regular snake type of plumbing tool, is there something similar but electric and not too pricy?
yes i know i know home depot has it…. but is there any other place…?

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