Flippanarchy

Any collective organization that can form a bureaucracy for the management of capital is a State, for all intents and purposes. Any large capital project needs administration and expertise to function and a means of socially reproducing these roles in order to continue to function over time.

The question becomes how to integrate yourself and your neighbors into the mechanics of statecraft without overwhelming people with bullshit or hedging them out into serfdom. But trying to prohibit statecraft is as much a fool's errand as trying to impose it at a great distance through imperialism.

People will organize into state bodies whether you want them to or not.

Have you found the nearby anarchist collective yet?

Food Not Bombs is a great group full of genuinely enlightened people. Unfortunately, they are constantly getting harassed by the police.

Makes doing anything on a routine basis a serious chore.

two key characteristics of a state to be the claim to the right to demand tax, and the claim to the exclusive use of violence.

I think the first runs afoul of the Tragedy of the Commons. If you don't have some mechanism for collecting surplus and redistributing it between people, then you end up with individualist overuse/overconsumption or private aggregation of property through superior economic position. You need some kind of redistribution system to mitigate social risk and negative externalities on property. And that typically comes as an explicit or implicit tax on private earnings.

I'll spot you the second... kinda. Because at a national level, its definitely true that exclusive right to violence gives dictatorial power to the chief executive. But, at the same time, at a given regional level you're always going to have some professionalized or majoritarian superior force with very limited tolerance for competition. If you look at Yugoslavia following the collapse of the USSR, you see what happens when a single unified federal system is allowed (arguably encouraged) to Balkinize into a bunch of roughly-equal groups of ethnic groups pitted against one another for increasingly scare resources. The civil war in the Balkins effectively cleared the way for NATO to capture and reconsolidate Yugoslavia under a single EU banner-head. Anarchists traded Titoism for Merkel-entialism.

Asking whether one can have capable municipal water service without a state is a different question than whether one can have capable municipal water service without institutions.

The public at-large needs a functioning water service in order to operate as a cohesive municipality. But a series of professionalized water service providers offers a leverage point from which administrators can exert authority over the public at-large (by deciding who does and does not have access to cheap potable water).

So you need a proletarian lead administration to oversee the professional water services. You can't just bank on the water services management to be unambitious indefinitely. Or immune to corruption or greed or intimidation.

Your arguments here seem more in support of institutions than states.

Institutions are the foundation upon which a state is built. Once you establish - say - a professional military, you've kicked open the door for a military dictatorship. Once you establish a professional financial sector, you've invited monopolistic banking interests. Even trade unions ultimately establish economic choke points through which power can consolidate and violence can be centralized. Just ask anyone in the mobbed up corners of Southern Europe or Latin America.

At some point, you cannot forego a dictatorship of the proletariat without paving the way for a dictatorship of the bourgeois.