# What we assemble, and where it comes from

URL: https://municorn.us/data/sources/
Updated: 2026-09-08
Tags: data, sources

> **Cite as:** Municorn.us, "What we assemble, and where it comes from", Municorn water loss index, https://municorn.us/data/sources/ (source filings retrieved 2026-09-08).
> **Licence:** CC BY 4.0 — https://creativecommons.org/licenses/by/4.0/ — reuse and redistribution are permitted with attribution to Municorn.us and a link to this URL.
> **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.

The records a utility already produces and the public databases that hold the rest of them, named. Half of this work is a utility's own paperwork, which is usually the harder and more valuable half.

Two halves, and the first is the one most descriptions of this work leave out. A utility's own records are usually the harder and more valuable side: they are in a billing system nobody has queried in years, a folder of PDFs, and a spreadsheet one person maintains. Public data is the half that is merely tedious.

Named as documents rather than as systems throughout. Naming a system would promise a connector that does not exist.

## Your internal records

- Billing and consumption exports
- Audited financial statements
- Capital plan and prior rate study
- Meter, production and flow logs
- Council and board packets

## State agency publications

- Water loss filings
- Drinking water violations and enforcement
- Funding priority and award lists
- Rate ordinances and tariffs

## Federal and other sources

- Household income and demographics
- Federal drinking water databases
- Lead service line inventories
- PFAS occurrence under UCMR5
- Filings held by other agencies

_Municorn.us · https://municorn.us/data/sources/ · CC BY 4.0 https://creativecommons.org/licenses/by/4.0/ · source filings retrieved 2026-09-08_

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