Wisconsin · PWS 3890

Mosinee Municipal Water And Sewer

What Mosinee Municipal Water And Sewer filed with PSC about the water it produced and the water it billed for, 2016–2025 — and what the filing does and does not let anyone verify.

Non-revenue water, FY2025
27.0%
Computed from filed system input and billed consumption.

2026-09-08-5ef7d6e2fdbd.csvSheet1 H342

Where this figure comes from

(system input − billed authorized) ÷ system input × 100

  • system input volume 213.7 sheet Sheet1, cell H342 · thousands of gallons, declared in the column header, divided by 1,000 · net of water sold to wholesale customers, which is the volume entering this utility's own distribution system
  • billed authorized consumption 156 sheet Sheet1, cell I342 · thousands of gallons, declared in the column header, divided by 1,000

From data/archive/wi-psc-water-audit/2026-09-08-5ef7d6e2fdbd.csv (SHA-256 5ef7d6e2fdbdac2b), retrieved 2026-09-08 from the published source.

Recoverable annually
Not estimable from what PSC publishes. A loss percentage cannot be priced without the volume it is a share of.
Balance check
inapplicable
PSC derives water losses from system input minus authorized consumption, so this decomposition holds by construction.

What the record shows

27.0% non-revenue water in FY2025, higher than 78% of the 562 Wisconsin systems that filed that year.

27.0% non-revenue water in FY2025, against 562 Wisconsin filings for the same yearA strip of 562 filings on a 0 to 64% axis. The median is 16.6%. This system is 27.0%. 4 filings above 64% are drawn at the right edge.0%10%20%30%40%50%60%This system 27.0%Wisconsin median 16.6%

Debt outstanding, and what covers the interest

$1.3M of long-term debt outstanding at the end of 2025, across 2 bond issues. This is principal outstanding on a combined water and sewer utility's balance sheet, which the Commission files as one.

Principal outstanding at the end of each year, as filed
YearDebt outstandingIssues
2025$1.3M2
2024$1.4M2
2023$1.5M2
2022$8.3M3
2021$8.3M2
2020$8.5M2
2019$8.7M2
2018$9.2M3
2017$9.6M3
2016$10.0M3

This utility's balance sheet and income statement are water and sewer, filed as one. A coverage ratio computed from them would put one service's revenue over another service's interest.

Figures are as filed with the Commission under Wis. Admin. Code ch. PSC 185 and are not audited as presented. Nothing here is a credit opinion, an implied rating, or a judgement that any figure is sufficient. Source: Public Service Commission of Wisconsin, annual report financial schedules, 2016–2025, retrieved 2026-09-12.

Water balance, FY2025 · 213.7 MG system input
Billed 156 MG Unbilled authorized 56 MG Apparent loss 0 MG Real loss 1.79 MG

PSC derives water losses from system input minus authorized consumption, so these parts sum to the whole on every filing. What a filing can get wrong is which of these numbers were measured.

Where these volumes come from
  • System input 213.7 MG sheet Sheet1, cell H342 · thousands of gallons, declared in the column header, divided by 1,000 · net of water sold to wholesale customers, which is the volume entering this utility's own distribution system
  • Billed authorized 156 MG sheet Sheet1, cell I342 · thousands of gallons, declared in the column header, divided by 1,000
  • Unbilled authorized 56 MG sheet Sheet1, cell O342 · thousands of gallons, declared in the column header, divided by 1,000
  • Apparent loss 0 MG sheet Sheet1, cell R342 · thousands of gallons, declared in the column header, divided by 1,000
  • Real loss 1.79 MG sheet Sheet1, cell U342 · thousands of gallons, declared in the column header, divided by 1,000

From data/archive/wi-psc-water-audit/2026-09-08-5ef7d6e2fdbd.csv (SHA-256 5ef7d6e2fdbdac2b), retrieved 2026-09-08 from the published source.

Filed history, 2016–2025
Year NRW Input (MG)
2025 27.0% 213.7
2024 29.4% 203.9
2023 27.2% 203.5
2022 31.5% 200.1
2021 28.4% 187.4
2020 35.8% 197
2019 37.9% 214.2
2018 43.4% 243.5
2017 45.6% 218.1
2016 37.7% 172.6

Other Wisconsin systems

PSC publishes no county or connection count for these systems, so they cannot be ranked against this one. These are other filers, not comparables.

Where is it going?

This page says how much. It cannot say which accounts, which zones, or which meters. That takes your billing history, your meter reads, and your production data reconciled against each other.

Our Water Loss Recovery Snapshot is three weeks, one flat fee, and the deliverable is a ranked list of specific accounts and zones with dollars and a confidence on each.

See what the Snapshot delivers Email us about Mosinee Municipal Water And Sewer

Sources and corrections. Every figure above is either filed by the utility or computed from filed figures, and each one says which. If a number here is wrong, it is either wrong in the filing or wrong in our reading of it — tell us which and we will correct the page and say what changed.

Cite as

Municorn.us, “Mosinee Municipal Water And Sewer — water loss as filed”, Municorn water loss index, https://municorn.us/water-loss/wi/mosinee-municipal-water-and-sewer/ (source filings retrieved 2026-09-08).

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.