I had an idea for a mod, but couldn't figure how to make it myself, so I thought I'd share it here in case anyone else thought it would be worth making.

The Groundwater Extractor: this building is built on mines to extract water from deep underground. It uses gears and pipes to produce water and requires power. Building materials would be metal blocks, treated planks, and pipes.

The Iron Teeth could have the Efficient Groundwater Extractor that uses dynamite in addition to the other requirements to produce more water per hour.

The Pipe Factory: this building produces the pipes needed for the Groundwater Extractor. Pipes are produced using metal blocks, pine resin, and extract and requires power. Pipes are stored in piles.

I also thought about the Groundwater Extractor requiring water filters. They would be produced in the Filter Factory from charcoal, paper, and treated planks. Water filters would be stored in warehouses. Charcoal would be produced in the Furnace from wood and bad water and stored in piles. The Folktails could have an Efficient Filter Factory that produces water filters with logs instead of charcoal, but it requires more power. They wouldn't have a Furnace.

Alternatively, the Groundwater Extractor could produce contaminated Groundwater that needs to be purified before it can be used. A Water Purification Plant would then use the water filters to turn the Groundwater into pure water for use by the beavers.

Anyway, that was my idea. If anyone wants to take it and run with it, be my guest.