Capital Program Planning for Wisconsin Water Utilities

by | Oct 21, 2026

Wisconsin · Water & Wastewater Utilities

Milwaukee has to pull 65,000 lead pipes by 2037. Every Wisconsin utility is on a similar clock.

A federal lead-line mandate, PFAS settlements, a Great Lakes diversion, and a rate regulator that reaches municipal utilities — few states stack this many capital pressures on one plan. Invizion helps Wisconsin water utilities re-sequence a capital portfolio in a click, and defend every decision to the PSC and their boards.

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The bottom line: Wisconsin stacks a 65,000-line lead mandate in Milwaukee, two of the nation's worst PFAS sites, a Great Lakes diversion, and a rate regulator that reaches municipal utilities — all while a generation's worth of SRF funding arrives. The utilities that win the decade will be the ones whose capital plans can absorb that volatility and stay defensible.
65,0001
Lead service lines Milwaukee Water Works must replace — its plan targets 2037.
575+2
Drinking-water utilities the Wisconsin PSC regulates — including the rates of municipal systems, which is unusual.
$8B3
Financial assistance provided to Wisconsin municipalities through the Environmental Improvement Fund since 1991.
$204M4
Safe Drinking Water Loan Program funding across 94 projects in state fiscal year 2026.

The Wisconsin Landscape

Four forces are moving your project list at once

None of these is theoretical, and none of them waits for your next budget cycle. Together they mean the capital plan you approved last year may already be the wrong plan.

Compliance — Lead service lines

A 65,000-line mandate on a hard federal clock

Milwaukee Water Works must replace roughly 65,000 lead service lines, and its Milwaukee Prioritization Program targets completion by 2037.1 That deadline is not self-imposed: the 2024 EPA Lead and Copper Rule Improvements require most systems to identify and replace their lead pipes within about ten years.5 Milwaukee Water Works serves nearly 950,000 people across 16 communities in three counties, so the scale is enormous.6

Milwaukee has already replaced more than 13,000 lines and planned about 3,500 in 2025, with the pace set to grow each year.1 The benchmark is Madison, which became the first major U.S. city to launch a full lead-replacement program and has swapped out more than 8,000 lines since 2000.7 State money is flowing to the work — Milwaukee alone drew $50.5M from the SFY2026 lead program.8

Contamination — PFAS

Two of the country's worst PFAS sites are in Wisconsin

In April 2024 EPA set enforceable drinking-water limits of 4 parts per trillion for PFOA and PFOS, with initial monitoring due by 2027 and treatment in place by 2029.9 For Wisconsin that is not abstract. In the Marinette and Peshtigo area, decades of firefighting-foam training at the Johnson Controls/Tyco Fire Technology Center left groundwater above 100,000 ppt and pushed 78 of 173 sampled private wells past drinking-water guidelines; a 2026 settlement directs about $10M into the state's PFAS trust fund.10

Around La Crosse, contamination tied to the airport reached the Town of Campbell on French Island, where 140 of 553 sampled wells exceeded state health standards.11 Wherever PFAS turns up, the fix is capital — new wells, treatment, or connections — competing with everything else on the list.

Supply — Source security

The state that had to leave the Great Lakes basin to get clean water

Waukesha's deep aquifer carried radium above federal limits, so the city won approval in 2016 — the first from a community entirely outside the Great Lakes basin — to divert Lake Michigan water under the Great Lakes Compact, roughly 8 million gallons a day through about 35 miles of new pipeline, with typical bills projected to rise around 50% between 2023 and 2027.12 The switch to lake water was completed in October 2023.13

Lake Michigan is the backbone for Milwaukee, Green Bay, Racine and Kenosha, but inland systems lean on groundwater that can carry radium, nitrate or PFAS. Where your next reliable source comes from is now a capital question, not just a resource one.

Renewal — Aging mains & rates

Renewal and new mandates, on the same clock

Milwaukee alone maintains nearly 2,000 miles of water main and delivers over 250 million gallons a day; that pipe ages whether or not a mandate is pending.6 Lead, PFAS and renewal don't take turns — they stack, and something on the list has to move.

The pressure is sharpened by oversight: the PSC reviews municipal as well as investor-owned rates, so every increase has to be justified.2 The funding is real — the Clean Water Fund Program alone carried roughly $475M in requests across about 105 projects in SFY202614 on top of the $8B the Environmental Improvement Fund has provided since 19913 — but absorbing it while staying defensible is the hard part.

Who Runs Wisconsin's Water

An overwhelmingly municipal state, with regional authorities filling the gaps

Wisconsin water is delivered almost entirely by city and village utilities — hundreds of them — with wholesale authorities and a big regional sewerage district behind the scenes. Investor-owned water is a small share. What sets the state apart is that the PSC sets rates for the municipals too.

Municipal utilities

Rates reviewed by the PSC · capital approved by councils & boards

Milwaukee Water Works ~950,000 served in 16 communities · 250+ MGD · ~2,000 mi of main6
Madison Water Utility 250,000+ served · 23 deep wells · 64,839 connections15
Green Bay Water Utility Wisconsin's 3rd-largest supplier · Lake Michigan source16
Waukesha Water Utility Switched to Lake Michigan water in 202313
Kenosha, Racine, Oshkosh, Eau Claire Other large municipal systems

Regional authorities & wastewater

Wholesale providers, districts & the few investor-owned systems

Milwaukee Metropolitan Sewerage District (MMSD) Regional wastewater · ~1.1M people · 29 communities · 423 sq mi17
Central Brown County Water Authority Wholesale Lake Michigan supply to the Green Bay area
Sanitary & utility districts Hundreds of small systems statewide
Investor-owned water utilities A small share — nearly all community water is municipal2

Unlike many states, Wisconsin has very little private water ownership; the PSC's rate jurisdiction over municipals is where the real oversight lives.2

Rate-Setting & Oversight

Every capital dollar has to be defensible

Whether you answer to the Public Service Commission or your council, the question is the same: why this project, why now, why at this cost? Wisconsin's oversight reaches further than most.

  • Public Service Commission of Wisconsin (PSC) — unusually, the PSC sets rates for municipal as well as investor-owned water utilities, regulating more than 575 drinking-water systems through conventional and simplified rate cases.2
  • EPA Lead & Copper Rule Improvements (2024) — require most systems to replace lead service lines within about ten years; Milwaukee's program targets 2037.51
  • Federal PFAS drinking-water standards (2024) — enforceable 4 ppt limits for PFOA and PFOS, with monitoring due by 2027 and treatment by 2029.9
  • Wisconsin DNR — holds Safe Drinking Water Act primacy and runs the state's PFAS response in Marinette, La Crosse and beyond.10
  • A benchmark worth noting — Madison was the first major U.S. city to replace all its lead service lines, a decade-plus effort begun in 2000.7

Funding On The Table

The money is moving — can your plan absorb it?

Wisconsin utilities have more capital funding available than they've had in a generation. The constraint is no longer only dollars — it's readiness: which projects are shovel-ready, which qualify, and how the timing lines up with everything else on the list.

  • Safe Drinking Water Loan Program — about $204M across 94 projects in SFY2026, including $55.8M in principal forgiveness and $17.8M in Bipartisan Infrastructure Law emerging-contaminant funding.4
  • Lead Service Line Replacement Program — $159.9M in SFY2026 to 41 communities with $81.3M in principal forgiveness; Milwaukee alone received $50.5M.8
  • Clean Water Fund Program — roughly $475M requested across about 105 projects in SFY2026, with $54.3M in principal forgiveness.14
  • Environmental Improvement Fund — Wisconsin's SRF umbrella has provided more than $8B to municipalities since 1991.3
  • Tyco/JCI PFAS settlement — a 2026 settlement directs about $10M into the state's PFAS trust fund for Marinette-area drinking water.10

Where Invizion Fits

Turn a moving Wisconsin picture into a defensible capital plan

Invizion is scenario-based capital portfolio optimization built for water utilities. When the supply picture shifts, a mandate lands, or a grant comes through, you don't re-plan by hand for weeks — you model it and decide with a record you can stand behind.

1

Model the “what-if” before it's forced on you

A new mandate, a failed main, a grant with a deadline — build the scenario and see the impact on the whole portfolio, side by side with today's plan.

2

Re-sequence 500 projects in a click

When priorities move, Invizion re-orders the portfolio automatically — accelerating, stretching, or deferring projects against the constraints you set, not weeks of spreadsheet surgery.

3

Give regulators or your board a defensible record

Every prioritization and trade-off is captured. When you're asked “why this project, why now,” the answer is documented — not reconstructed after the fact.

Wisconsin Water, In Brief

Questions Wisconsin utility leaders are asking

Short, sourced answers — the same facts we'll dig into on a call, in the context of your system.

Does the Wisconsin PSC really set my municipal water rates?
Yes — and that's what makes Wisconsin unusual. The Public Service Commission regulates more than 575 drinking-water utilities, and its rate jurisdiction covers municipal systems, not just investor-owned ones. Utilities file conventional or simplified rate cases, and capital spending has to be justified in that record.2
How fast does Milwaukee have to replace its lead pipes?
Milwaukee Water Works must replace roughly 65,000 lead service lines and targets 2037, driven by the 2024 EPA Lead and Copper Rule Improvements' roughly ten-year window. It has replaced more than 13,000 so far, planned about 3,500 in 2025, and drew $50.5M from the SFY2026 state lead program.158
Where are Wisconsin's biggest PFAS problems?
The Marinette and Peshtigo area, where firefighting-foam training at the Johnson Controls/Tyco Fire Technology Center drove groundwater above 100,000 ppt and contaminated dozens of wells, and the La Crosse area, where 140 of 553 sampled wells on French Island exceeded state standards. Federal limits of 4 ppt for PFOA and PFOS now apply statewide.10119
Why did Waukesha switch to Lake Michigan water?
Its deep aquifer carried radium above federal limits. In 2016 Waukesha became the first community entirely outside the Great Lakes basin approved to divert lake water under the Great Lakes Compact — about 8 million gallons a day through roughly 35 miles of pipeline — and completed the switch in October 2023. Typical bills were projected to rise about 50% between 2023 and 2027.1213
What state and federal funding is available for Wisconsin water projects?
In SFY2026 the Safe Drinking Water Loan Program carried about $204M, the Lead Service Line Replacement Program $159.9M, and the Clean Water Fund Program roughly $475M in requests — on top of the more than $8B the Environmental Improvement Fund has provided since 1991. Much of it comes with principal forgiveness for eligible communities.48143
How does Invizion help Wisconsin water utilities plan capital?
Invizion is scenario-based capital portfolio optimization for water utilities. It lets you model how a lead deadline, a PFAS finding, a source change, or a funding award reshuffles your whole project list, re-sequence the portfolio automatically against your constraints, and keep a defensible record of every trade-off for the PSC, your council, or ratepayers. The best next step is a short first meeting to look at it against your own program.

Go Deeper

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About the Author

GB

Guy Barlow

President, Invizion

Guy Barlow leads Invizion, a capital lifecycle management platform for water and wastewater utilities. He has spent two decades at the intersection of utility capital programs, funding, and analytics, helping utilities make faster, more defensible capital decisions.

Start The Conversation

See what a defensible capital plan looks like

Book a 20-minute first meeting. We'll talk through the forces reshaping your capital program and show how Invizion helps you keep the plan current and defensible — no slides, no pressure.

Book your first meeting

This briefing was last reviewed September 2026.

Sources

  1. City of Milwaukee, Milwaukee Water Works — Milwaukee Prioritization Program: ~65,000 lead service lines to replace, targeting 2037; 13,000+ replaced, ~3,500 planned in 2025, 2025–2026. city.milwaukee.gov
  2. Public Service Commission of Wisconsin — Water regulation: PSC regulates 575+ drinking-water utilities including municipal rates via conventional and simplified rate cases, 2025. psc.wi.gov
  3. Wisconsin DNR — Environmental Improvement Fund: over $8 billion in financial assistance to municipalities since State Fiscal Year 1991, 2026. dnr.wisconsin.gov
  4. Wisconsin DNR — Safe Drinking Water Loan Program SFY2026 Funding List: ~$204.15M across 94 projects, $55.8M principal forgiveness, $17.8M BIL emerging-contaminant funding. dnr.wisconsin.gov
  5. U.S. EPA — Lead and Copper Rule Improvements (finalized October 2024): systems must identify and replace lead service lines within about 10 years; $2.6B DWSRF support. epa.gov
  6. City of Milwaukee, Milwaukee Water Works — About: ~866,000 residents in the service region, water to nearly 950,000 people in 16 communities across 3 counties, 250+ MGD, ~2,000 miles of main, 2025. city.milwaukee.gov
  7. City of Madison, Madison Water Utility — Lead & Copper in Water: first major U.S. city to launch a full lead service replacement program, more than 8,000 lines replaced since 2000, 2025. cityofmadison.com
  8. Wisconsin DNR — Lead Service Line Replacement SFY2026 Funding List: $159.9M to 41 municipalities, $81.3M principal forgiveness; City of Milwaukee $50.5M across four projects. dnr.wisconsin.gov
  9. U.S. EPA — PFAS National Primary Drinking Water Regulation (April 2024): enforceable 4.0 ppt limits for PFOA and PFOS; initial monitoring by 2027, treatment by 2029. epa.gov
  10. Wisconsin DNR — Marinette & Peshtigo PFAS: Johnson Controls/Tyco Fire Technology Center AFFF training (1960s–2017), groundwater >100,000 ppt, 78 of 173 sampled wells over guidelines, ~$10M 2026 settlement into state PFAS trust fund. dnr.wisconsin.gov
  11. Wisconsin DNR — Town of Campbell / French Island (La Crosse) PFAS: 553 potable wells sampled, 140 exceeding state health standards, 2019–2021. dnr.wisconsin.gov
  12. Waukesha water diversion — 2016 Great Lakes Compact approval (first community entirely outside the basin), aquifer radium, ~8 MGD via ~35 miles of pipeline, bills projected +~50% (2023–2027). en.wikipedia.org
  13. Great Water Alliance (Waukesha Water Utility) — transition to Lake Michigan water completed October 2023. greatwateralliance.com
  14. Wisconsin DNR — Clean Water Fund Program SFY2026 Funding List: ~$475M in requests across ~105 projects, $54.3M principal forgiveness, incl. Marinette emerging-contaminant project. dnr.wisconsin.gov
  15. City of Madison, Madison Water Utility — About: more than 250,000 people served, 23 deep wells, 64,839 service connections, 916 miles of water main, 2025. cityofmadison.com
  16. Green Bay Water Utility — Wisconsin's third-largest drinking-water supplier, Lake Michigan source, 2025. gbwater.org
  17. Milwaukee Metropolitan Sewerage District — About: regional water reclamation and flood management for ~1.1 million people in 29 communities across 423 square miles, 2025. mmsd.com