# Estero Municipal Improvement District — water loss as filed

DWR · PWS CA4110021 · filings 2016–2024
https://municorn.us/water-loss/ca/estero-municipal-improvement-district/

> **Cite as:** Municorn.us, "Estero Municipal Improvement District — water loss as filed", Municorn water loss index, https://municorn.us/water-loss/ca/estero-municipal-improvement-district/ (source filings retrieved 2026-09-05).
> **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.

## Summary

Estero Municipal Improvement District reported **7.3% non-revenue water** in FY2024, higher than 36% of the 545 California systems that filed that year. At the utility's own reported water rates that is **$386,000 a year**, as computed in the filed audit itself. Apparent loss is valued at this utility's own reported retail price of water. Real loss is NOT included — DWR publishes a variable production cost whose unit it does not declare, so no dollar figure is put on the leaked water. The real recoverable total is higher than this by an amount this filing does not let anyone state.

**The water balance is not a check here.** DWR derives water losses from system input minus authorized consumption, so this decomposition holds by construction.

## Filed history

| Year | Non-revenue water % | System input (MG) | Cost of losses/yr |
|---|---|---|---|
| 2024 | 7.3% | 1,360 | $386,000 |
| 2023 | 8.6% | 1,314 | $372,000 |
| 2022 | 9.3% | 1,391 | $393,000 |
| 2021 | 7.2% | 1,423 | $165,000 |
| 2020 | 8.3% | 1,581 | $182,000 |
| 2019 | 7.6% | 1,498 | $153,000 |
| 2018 | 5.8% | 1,535 | $154,000 |
| 2017 | 10.9% | 1,511 | $140,000 |
| 2016 | 8.8% | 1,371 | $121,000 |

## How the cost figure is built

Apparent loss is water delivered and never billed, so it is valued at the retail rate: revenue, recoverable inside a
budget year without capital work. Real loss is valued at variable production cost, because eliminating a leak saves
treatment and pumping rather than retail price. Where the filed audit carries its own cost of losses — as
DWR's export does — those figures are used directly and no rate of ours enters the
calculation.

## Source

California DWR — urban retail water supplier water loss audits, filed under Water Code section 10608.34. Retrieved 2026-09-05. https://data.cnra.ca.gov/dataset/d6cdd89e-49b0-4b1f-86ee-8b7237e5f169/resource/058ac6ca-a8b4-4f28-b6c8-11e48309f3b4/download/ca-retailer-waterlossdata.csv

The FY2024 loss figure: (system input − billed authorized) ÷ system input × 100, from system input volume at `Sheet1!AN3846`; billed authorized consumption at `Sheet1!AQ3846` — in `data/archive/ca-dwr-water-loss/2026-09-05-f0dfea5a6026.csv` (sha256 f0dfea5a6026881d, retrieved 2026-09-05, https://data.cnra.ca.gov/dataset/d6cdd89e-49b0-4b1f-86ee-8b7237e5f169/resource/058ac6ca-a8b4-4f28-b6c8-11e48309f3b4/download/ca-retailer-waterlossdata.csv), read by `src/scrape/ca.ts` at eaf9ca89f144.

The annual figure in dollars: cost of apparent losses + cost of real losses, both as computed in the filed audit, from cost of apparent losses, as filed at `Sheet1!DH3846` — in `data/archive/ca-dwr-water-loss/2026-09-05-f0dfea5a6026.csv` (sha256 f0dfea5a6026881d, retrieved 2026-09-05, https://data.cnra.ca.gov/dataset/d6cdd89e-49b0-4b1f-86ee-8b7237e5f169/resource/058ac6ca-a8b4-4f28-b6c8-11e48309f3b4/download/ca-retailer-waterlossdata.csv), read by `src/scrape/ca.ts` at eaf9ca89f144.

Volumes are normalized to million gallons on ingest; the export reports them in the unit each filing states.

Figures are as filed unless stated otherwise. If a number here is wrong it is wrong in the filing or wrong in
our reading of it, and both are worth knowing: ammar@municorn.us

_Municorn.us · https://municorn.us/water-loss/ca/estero-municipal-improvement-district/ · CC BY 4.0 https://creativecommons.org/licenses/by/4.0/ · source filings retrieved 2026-09-05_

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## Compliance record

Violations on EPA's record as of 2026Q2: **5** (2 health-based).
Resolved: 4. Archived: 1. **Still open: 0.**

Nothing on the record is open as of 2026Q2.

Counted as distinct violations rather than as rows: EPA's export carries one row per enforcement action taken
against a violation. A violation is a breach of a reporting, monitoring or contaminant-level rule as reported
to EPA; it is not a measurement of the water.

Source: US EPA, Safe Drinking Water Information System, via the ECHO national download, 2026Q2.