# Bakman Water - Rolling Hills — water loss as filed

DWR · PWS CA2010009 · filings 2019–2025
https://municorn.us/water-loss/ca/bakman-water-rolling-hills/

> **Cite as:** Municorn.us, "Bakman Water - Rolling Hills — water loss as filed", Municorn water loss index, https://municorn.us/water-loss/ca/bakman-water-rolling-hills/ (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

Bakman Water - Rolling Hills reported **9.0% non-revenue water** in FY2025, higher than 59% of the 141 California systems that filed that year. The figure is trending worse across the record.

**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 |
|---|---|---|---|
| 2025 | 9.0% | 126.5 |  |
| 2024 | 9.0% | 136.7 |  |
| 2023 | 9.0% | 121.4 | $1,310 |
| 2022 | 9.0% | 141.9 | $1,540 |
| 2021 | 10.0% | 134.2 | $744 |
| 2020 | 10.0% | 131.4 | $663 |
| 2019 | 2.8% | 113.1 | $401 |

## 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 FY2025 loss figure: (system input − billed authorized) ÷ system input × 100, from system input volume at `Sheet1!AN1692`; billed authorized consumption at `Sheet1!AQ1692` — 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/bakman-water-rolling-hills/ · CC BY 4.0 https://creativecommons.org/licenses/by/4.0/ · source filings retrieved 2026-09-05_

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## What it charges

No bill is published for this system. This system did not file a complete residential rate structure — a fixed charge, at least one volumetric tier, and the unit those are quoted in.

## Compliance record

Violations on EPA's record as of 2026Q2: **7** (2 health-based).
Resolved: 4. Archived: 0. **Still open: 3.**

- Follow-up Or Routine LCR Tap M/R — addressed, from October 1, 2025
- LSL Inventory (health-based) — unaddressed, from October 17, 2024
- LSL Reporting — unaddressed, from October 17, 2024

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.