Wisconsin · PWS 5870

Theresa Municipal Water And Sewer

What Theresa 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
17.4%
Computed from filed system input and billed consumption.

2026-09-08-5ef7d6e2fdbd.csvSheet1 H497

Where this figure comes from

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

  • system input volume 24.4 sheet Sheet1, cell H497 · 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 20.2 sheet Sheet1, cell I497 · 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

17.4% non-revenue water in FY2025, higher than 53% of the 562 Wisconsin systems that filed that year.

17.4% 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 17.4%. 4 filings above 64% are drawn at the right edge.0%10%20%30%40%50%60%This system 17.4%Wisconsin median 16.6%
The reported figure is not stable enough to act on. It has moved an average of 7.8 points a year, against a Wisconsin median of 5.1, including 41% to 24% between FY2019 and FY2020. A distribution system's real losses do not change that fast — pipe does not deteriorate or repair itself in a single year. A series that moves like this is describing how the water is being measured and recorded, not how much of it is being lost, and which year is closer to true cannot be settled from this filing.

Debt outstanding, and what covers the interest

$2.2M of long-term debt outstanding at the end of 2025, across 3 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$2.2M3
2024$2.3M3
2023$1.1M1
2022$1.2M1
2021$1.3M1
2020$1.3M1
2019$270,3121
2018$00
2017$00
2016$00

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 · 24.4 MG system input
Billed 20.2 MG Unbilled authorized 0.22 MG Apparent loss 0 MG Real loss 4.04 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 24.4 MG sheet Sheet1, cell H497 · 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 20.2 MG sheet Sheet1, cell I497 · thousands of gallons, declared in the column header, divided by 1,000
  • Unbilled authorized 0.22 MG sheet Sheet1, cell O497 · thousands of gallons, declared in the column header, divided by 1,000
  • Apparent loss 0 MG sheet Sheet1, cell R497 · thousands of gallons, declared in the column header, divided by 1,000
  • Real loss 4.04 MG sheet Sheet1, cell U497 · 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 17.4% 24.4
2024 19.7% 24.4
2023 26.6% 26.9
2022 37.5% 29
2021 30.1% 30.2
2020 24.1% 28.7
2019 41.4% 36.9
2018 41.8% 37.2
2017 35.8% 33.6
2016 23.2% 28.7

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 Theresa 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, “Theresa Municipal Water And Sewer — water loss as filed”, Municorn water loss index, https://municorn.us/water-loss/wi/theresa-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.