Radical Luddism (or maybe not).

Yesterday, thirst-stricken in front of an organic food store, I bought a bottle of Lauretana mountain spring water, which brags, among other things, about being bottled using only natural gravity, without any pressure. If taken as a rejection of pumping technology, developed about two-and-a-half millenia ago, this is pretty radical even by most luddist standards; if, however, this is intended merely as a criticism of artificial gravity, this is rather conservative.

I'm tempted to take Lauretana's logic one step further and just leave some empty bottles outside to be rained into, which is probably as low-tech as you can possibly go.