Since January 1, 2026, Iowa sellers have had to say whether a home has a lead water service line. In most of Johnson County the answer is close to automatic. In Iowa City it carries real cost, because the city has banned repairs on lead lines, makes the owner responsible for the whole pipe, and publishes an address-level map of what each line is made of.
Put those three rules together and a lead line works like a scheduled expense that hasn't been billed yet. Unless a city water-main project reaches the street first, nothing happens until the line leaks. When it does, the owner pays for a full replacement on the city's timeline. The real question for a buyer or seller is who carries that cost when the house changes hands.
The question now printed on every disclosure
House File 876 changed Iowa's seller disclosure law to require disclosure of "the presence of lead service lines," with the change taking effect January 1, 2026. The Iowa Real Estate Commission's updated sample form took effect April 22, 2026, and asks it this way:
- Are there currently, or have there ever been, any lead water service lines present? Yes [ ] No [ ] Unknown [ ]
The wording reaches back in time. "Ever been" covers a line that was replaced years ago. The statutory definition is also broader than many people expect. A galvanized line counts as a lead line if it "ever was or is currently downstream of any lead service line or service line of unknown material." The law defines the service line as the pipe from the water main to the meter, not the plumbing inside the house.
On the form, the seller certifies information that is "known or reasonably available," and the buyer acknowledges that the statement "is not intended to be a warranty or to substitute for any inspection." That second sentence matters most to the buyer. The disclosure is where the buyer's own checking starts.
In Iowa City, the map is already public
The Water Division publishes the Iowa City Lead Service Inventory Map and points residents to it for "information about your home's service line material." According to the city's FAQ, the map sorts lines into tiers for lead, lead-contaminated galvanized, lead-soldered copper, other materials, and "Lead Service Unknown." Classifications draw on records, permits, assessor build year, repair history and trade knowledge, and the city resolves uncertainty conservatively.
Lead lines in Iowa City are common. A table compiled by uswatergrade.com from EPA's service line inventory data, a Q2 2026 snapshot updated August 18, 2026, lists the Iowa City system with 2,758 lead lines, 29 galvanized lines requiring replacement and 5 unknowns among 27,992 service lines. That works out to about one line in ten. The counts are compiled by a third party, so treat them as close estimates and not an official city tally. Even as estimates, they put this question on a meaningful share of Iowa City sales.
House age is a rough guide to where those lines are. The city publishes a general risk table by year built, reproduced here with its year bands as the city prints them, and those bands share their boundary years:
| Year home built | Lead service pipe | Lead solder joints | Leaded fixtures |
|---|---|---|---|
| 1950 or earlier | Elevated | Elevated | Elevated |
| 1950 to 1988 | Moderate | Elevated | Elevated |
| 1988 to 2014 | Low | Low | Moderate |
| 2014 or later | Low | Low | Low |
The disclosure question covers only the first column. A buyer touring a 1940s house still has the other two columns to think about, and the form says nothing about them.
Why a lead line isn't a normal plumbing item
Two rules on the city's water page explain why this is a pricing issue and not only a disclosure detail. First, "the entirety of the water service line is owned by and the responsibility of the customer," which means the full run from the main to the house. Second, leaks "are expected to be repaired within 72 hours of notification," and the owner hires the plumber or excavator.
Iowa City's Lead Reduction Program adds a third rule. Starting January 1, 2024, an amendment to City Code § 16-3-C bans "the repair, partial replacement, or reconnection of a lead service line." The city's reasoning is that a break strips the protective lining inside a lead pipe.
So on a copper line a leak usually means a repair. On a lead or lead-contaminated galvanized line, the same leak means a full replacement, with work expected to start within days. The program document says it plainly: "Replacing a water service line will be more expensive for a property owner than a repair."
The cost varies widely. In October 2024 the city's water superintendent told The Daily Iowan that replacements ranged from $2,000 to $35,000, depending in part on how long the line is. That range is two years old, and both ends of it may have moved. It is still the right scale for a negotiation. A lead line on a short city lot can be a moderate expense. On a deep lot with a long run to the main, it can be as large as a roof.
The cost-share helps, but you can't count on it at closing
Iowa City reimburses part of the work. As currently posted:
- Lead service line replacement: 50% of the cost, up to $5,000, for lines the city confirms as lead or lead-contaminated, with the reimbursement request due within one year of completing the work.
- Material verification dig: 50% up to $3,000 to expose the curb stop and two feet of pipe on each side, for addresses the map shows as "Lead Service Unknown" or where lead is otherwise suspected. It can be combined with the replacement cost-share if lead turns up. Owners with a broken line that needs repair can't use it.
- Faucets and filters: smaller cost-shares for low-lead faucets and certified filtration in older homes.
Three details limit how much a buyer can rely on this. The money comes as reimbursement after the work is done, not as a discount at closing. The city warns that "annual funding is limited, and the cost-share portion may be closed until the next fiscal year if all funds are used," and its fiscal year runs July through June. When the Daily Iowan reported on the program in 2024, it had served 15 residents and was funded by a $500,000 federal pandemic-relief grant, so that funding source may not be the current one. Before any number goes into a price discussion, call the Water Division at 319-356-5160 to confirm whether money is available this fiscal year.
The program also covers one scenario where the city pays for part of the work. When Iowa City replaces a water main, it installs a new service line from the main up to and including the curb stop. If the owner's section past the curb stop is lead, the owner can finish the replacement at reduced cost or take a point-of-use filter with six months of cartridges. A street on the city's main replacement schedule changes the numbers for a lead-line house on that block.
The city also promotes voluntary service line coverage. It has an agreement with Service Line Warranties of America to market those plans to Iowa City property owners, and it encourages owners to check whether their homeowners insurance covers service line replacement. Free lead testing is available through the University of Iowa's Get the Lead Out Iowa program or the Water Division. The city cautions that a test shows only whether lead is present, not where it comes from, and that a non-detect result doesn't rule out a lead component.
Coralville and North Liberty have almost none
The same compiled EPA snapshot shows how much of this is specific to Iowa City:
| System, Q2 2026 snapshot | Lead | Galvanized requiring replacement | Unknown | Total lines |
|---|---|---|---|---|
| Iowa City | 2,758 | 29 | 5 | 27,992 |
| Coralville | 1 | 0 | 29 | 6,571 |
| North Liberty | 0 | 0 | 0 | 9,280 |
These figures match earlier reporting. In 2024 The Daily Iowan reported that Coralville had narrowed its more than 6,300 lines to 83 possible cases and that North Liberty had found no lead in the 961 lines it had flagged. Both cities' 2025 water quality reports describe their inventories as complete and ask residents to contact the utility for results.
For a household comparing an older Iowa City house with a similarly priced one across the river, question 13 usually reads "No" in one city and needs real checking in the other. That difference can be worth thousands of dollars and should be priced before the offer goes in.
Questions that come up in practice
The map says lead, but the seller checked "Unknown." Now what? The map, the seller's form and a verification dig are three separate sources, and a buyer can compare them during the inspection period. If a dig confirms lead, that becomes a concrete item to negotiate on.
What makes replacement unavoidable? The Lead Reduction Program describes replacement as required "due to a leak or other defect," because the repair ban leaves no other option once a lead line fails. Whether a sale creates any separate obligation is a question for a real estate attorney.
We replaced the line last year. What goes on the form? The question asks whether lead lines "currently" are or "ever" have been present, and the form gives space to explain a "Yes." Paperwork from the replacement and any cost-share reimbursement record give a buyer something specific to rely on.
This post is general information, not legal, tax or financial advice. Confirm how these disclosure rules and city programs apply to your property with an attorney, your insurer or the Iowa City Water Division before acting on them.
If you're listing or buying a pre-1988 home in Iowa City, Kevin Wu can check the address against the city's inventory map before the offer is written and help structure any credit around a confirmed lead line. Let's Connect.
