Water rates

What water systems charge

The monthly residential bill at 4,488 gallons, computed from the fixed charge and the tiers each system filed with its own regulator.

By state

One state so far: California is the only regulator in this corpus that publishes a residential rate structure per system. A bill here is computed from a filed tariff and is not a quote — what a household pays depends on how much it uses.

← The water loss index — every system in the corpus, by state.

Cite as

Municorn.us, “What US water systems charge, by state”, Municorn water loss index, https://municorn.us/water-rates/ (source filings retrieved 2026-09-10).

CC BY 4.0 — reuse and redistribution are permitted with attribution to Municorn.us and a link to this page. Terms, and the one caveat that must travel with these figures.

"Water loss" is at least three different quantities depending on the jurisdiction, and nothing here supports a comparison between states.