"I'm also unsure if I want to have plastics (especially printed plastics) in my food production systems"

If you consume food provided by commercial agriculture, plastic will be part of the food production system, and the same is true for water. Only if you yourself produce your food and water can you exclude plastic from the systems that produce them. 3D printers are capable of manufacturing goods from literally every material that humanity has used to make things with. You are not limited to printing plastics with 3D printers. For example, Relativity Space printed it's recently launched spaceship out of an aluminum alloy. There are an almost infinite supply of examples you can find on Youtool of video of 3D printers being used to print things made of a variety of materials, such as concrete, chocolate, and even printing liquid water out of the water vapor in desert air.

There are certainly other means of making things out of other materials than plastic. The Romans often made water pipes and basins out of lead, being unaware of it's toxicity and finding it a convenient material to make pipes and basins with. Myriad examples of people making pipes and basins of clay exist. However, you will have to make a water provision system completely separate from commercially available water supplies, because all commercially available water supplies use plastics, particularly in pipe and basins.

What is demonstrable is that making things with other means are not able to be automated, at least not at any scale potential to home or individual manufacture. OTOH, using a paste extruder is relatively common and inexpensive with a 3D printer, and either a form of concrete, which can simply 'set' and chemically harden, or clay, which can be fired in a separate process to be turned into a ceramic, can be used in home manufacture or individually.

What can be said is that if you choose and act to eliminate plastics from your food and water provision systems, you will be making those systems in their entirety yourself, and unless you use a 3D printer to do so, you will be making those systems entirely by hand.