Where Is U.S. Water Infrastructure Spending Heading? 5 Signals to Watch in Utility Capital Plans

The U.S. water sector has a well-documented investment gap and a less well-read investment plan. The gap is the headline: the Environmental Protection Agency’s Seventh Drinking Water Infrastructure Needs Survey puts the 20-year need for drinking water systems at $625 billion, a 32% increase on the previous survey, and its 2022 Clean Watersheds Needs Survey puts the need for wastewater and stormwater systems at $630 billion. The plan is the quieter document. Every year, several thousand water and wastewater utilities adopt a capital improvement plan (CIP) that names the projects they intend to fund over the next five to ten years, with budgets by year and, often, the source of the money. Those plans are public. They are adopted before design is procured. And read in succession, edition against edition, they show where the next decade of water infrastructure spending is actually heading, as opposed to where the national need says it ought to go.

FirmoGraphs collects these plans as utilities adopt them, extracts every line item, and compares each new edition with the one before it. The examples below are drawn from that work and from plans we have already published alerts on. Five signals in the plans carry most of the information.

Signal 1: The size of the step between one edition and the next

A single CIP tells you what a utility wants. Two consecutive CIPs tell you what has changed, and the change is usually the story.

The steps can be large. Fairfax Water, which serves about two million people in northern Virginia, adopted a 2026-2035 plan of $1.6 billion across 117 projects, up 61.3% from the $1.0 billion and 98 projects in its 2023-2032 plan. The Board of Water Works of Pueblo, Colorado, a far smaller utility, moved from an $11.7 million program with 14 projects in fiscal 2025 to $60.4 million with 25 projects in fiscal 2026, a fivefold increase in one cycle. At the other end, Memphis Light, Gas and Water’s 2026-2030 plan is $1.5 billion against $1.7 billion in the 2025-2029 edition, a 10.1% reduction, and Anchorage Water and Wastewater Utility’s 2026-2031 plan of $243.3 million is 16.5% below the $291.4 million of the year before.

The direction matters less than the shape. A plan that grows because one large project entered it is a different market from a plan that grows across every program. Pueblo’s increase was spread across mains, pumping, metering, treatment and vehicles, and it arrived with a new $11.5 million transfer to a debt service fund, which is the signature of a utility that has decided to finance a step-change rather than absorb it from annual revenue. A plan that shrinks is not necessarily a market that has closed: Memphis’s lower total came with four more line items and a lower average project value, which reads as a program being re-sequenced rather than cut.

The practical rule is to read the delta, not the total. National surveys set the ceiling; the edition-to-edition change at each utility says who is moving now.

Signal 2: Treatment lines tied to a named contaminant

When a capital plan carries a treatment project named for a specific contaminant, the utility has moved from studying a regulation to budgeting for it. Two federal rules are doing most of the naming at present.

The first is the 2024 federal drinking water standard for PFAS. The limits of 4 parts per trillion for PFOA and PFOS remain in force. Systems must complete initial monitoring by April 2027 and comply by April 2029; the EPA has proposed, but not finalized, an exemption framework that would allow individual systems up to two further years, to April 2031, on request. The EPA has separately proposed rescinding the limits on four other PFAS compounds, and litigation over the rule continues. None of that has slowed the utilities that have already found the compounds in their source water. Fairfax Water’s plan includes a $356.5 million Griffith PFAS Treatment project to remove PFAS from the Occoquan supply: one line item worth more than a fifth of the whole ten-year plan, and the single largest reason the plan grew.

The second is the Lead and Copper Rule Improvements, with a compliance date of November 1, 2027. By then every system needs a baseline inventory and a replacement plan, the lead action level falls to 10 parts per billion, and the clock starts on replacing lead and certain galvanized service lines within ten years. The EPA’s needs survey counted 9.2 million lead service lines nationally and put replacement at $50 billion to $80 billion in 2021 dollars; the Bipartisan Infrastructure Law set aside $15 billion for the task through the Drinking Water State Revolving Fund.

The signal is the line item, not the rule. Thousands of systems are subject to both rules; the ones whose plans now carry a named PFAS treatment process or a lead service line replacement program with a budget by year are the ones that have decided how, and when, they will comply. The naming also tells a supplier which treatment category has been selected before any specification is written.

Signal 3: The share going to pipes rather than plants

Treatment plants draw the attention; pipes draw the money. The EPA’s drinking water survey places $420.8 billion of the $625 billion national need in distribution and transmission, about two thirds of the total, and the clean water survey’s largest category is conveyance repair and new conveyance at $151.1 billion.

Utility plans reproduce that ratio closely. Of Pueblo’s $60.4 million fiscal 2026 program, $40.4 million, or 67%, sits in drinking water conveyance: mains at $18.1 million, improvements and replacements at $11.6 million, pumping equipment at $4.56 million and meters at $3.93 million. Fairfax Water’s largest programs alongside PFAS treatment are its Distribution System Sustainability Program, major repairs to small meters and major repairs to treatment facilities. Clark Regional Wastewater District in Washington anchors its $159.2 million ten-year plan with a $21.6 million force main upgrade.

What to watch is the form the pipe spending takes. A utility that funds renewal as a standing, named program with a budget in every year of the plan has made distribution replacement a permanent line of business, and that program will be re-let in cycles for as long as the plan runs. A utility whose pipe work appears as a set of discrete projects is earlier in that transition. The first is a recurring market; the second is a one-time opportunity that may become one.

Signal 4: Resilience, power and stormwater lines

A category that barely existed in capital plans a decade ago now shows up as some of their largest items: power supply, flood protection, and the hardening of plants against events that used to be treated as exceptional.

Bergen County Utilities Authority in New Jersey, which treats wastewater for 47 municipalities, carries a $116 million FEMA-funded power supply mitigation project in its 2027-2031 plan; the two largest FEMA-funded items together account for $214 million of a $306 million program. The City of Billings, Montana, raised planned stormwater spending by 179% and drinking water spending by 145% between its 2026-2030 and 2027-2031 plans. Santa Barbara County’s $850.3 million plan keeps dams and flood control among its largest categories. The EPA’s clean water survey puts the national stormwater need at $115.3 billion, the second largest category after conveyance.

These lines are worth reading for two reasons. They are often the most expensive single items in a plan, as at Bergen County. And they tend to be funded from sources outside the utility’s rate base, which changes their timing: a project that depends on a federal hazard mitigation grant moves at the grantor’s pace, and a plan that already shows the grant as a funding source has usually cleared that hurdle.

Signal 5: How the plan is financed

The funding column of a capital plan is the one most readers skip and the one that best predicts timing. Three sources appear repeatedly.

Debt is the first. A new debt service transfer, as in Pueblo’s plan, means bonds have been issued or soon will be, and the projects that debt finances are funded and scheduled. State Revolving Fund loans are the second. The Bipartisan Infrastructure Law directed more than $50 billion to water infrastructure through the EPA, most of it through the state revolving funds, with nearly half required to flow as grants or principal forgiveness, and with $4 billion earmarked for emerging contaminants including PFAS. A plan that names an SRF loan for a project has usually placed that project on a state intended use plan, which is itself a public document with its own schedule. Federal grants are the third, and the slowest: FEMA, WIFIA and congressionally directed funds each carry their own calendar.

Financing also governs delivery. A utility that is bonding a program it must deliver on a regulatory deadline, as the PFAS and lead rules now impose, is the utility most likely to consider progressive design-build or construction manager at risk to compress the schedule. A utility funding a single project from annual revenue is more likely to let it conventionally. The funding column therefore says not only when a project will move but how much room there is to shape it before it does.

Reading the five together

No one signal is sufficient. A large step up in plan size with no named treatment project and no new financing is a wish list. A named PFAS process with a bond behind it and a budget in the plan’s first two years is a project that will be designed within eighteen months. The value is in reading the five signals across successive editions of each utility’s plan, and across enough utilities that the pattern is visible: which contaminants are being budgeted for, where pipe renewal has become a standing program, where resilience money has landed, and which utilities are financing a step-change now.

The national need surveys say the U.S. water sector should invest about $1.25 trillion over twenty years. The capital plans say which utilities have decided to, project by project and year by year. Those are the documents in which the next decade of water infrastructure spending is being written, and they are written in public.

Where Water AI Fits

Water AI monitors the capital improvement plans of U.S. water and wastewater utilities as they are adopted, extracts every line item, and compares each new edition with the last. For each utility it shows the change in total planned spending, the business areas and projects that drove it, the projects that are new to the plan, and the funding sources the plan names. For AEC and consulting firms and treatment-technology providers, that turns five signals scattered across thousands of public documents into a single view of where water infrastructure investment is heading, early enough to matter.