# Should you repipe after your lead service line is replaced?

> Repipe after a lead service line replacement? What a new copper service changes, meter moves, upsizing, who pays and how to order two permits. Plan it.

URL: https://chicagolakerepiping.com/guide/repipe-after-lead-service-line-replacement/

Decision Guide

A lead service line replacement brings a new copper service to the basement wall. Whether the pipe it now feeds should go too depends on what that pipe is, where the new line comes in, and how the two permits fit together.

Last Updated: October 25, 2026

**If the house still has galvanized steel supply pipe, a new copper service line feeds old, narrowed pipe, and a repipe is worth planning. If the interior is already copper in good condition, it may need only a clean connection at the new entry.** Either way, the City’s programs stop at the basement wall. The interior is the owner’s to plan, on its own permit.

A lead service line replacement is a project from the street to the meter. [Chicago Lake Repiping](https://chicagolakerepiping.com/) offers and manages both halves: [lead service line replacement](https://chicagolakerepiping.com/lead-service-line-replacement/) and [whole-house repiping](https://chicagolakerepiping.com/whole-house-repiping/) across Chicago and nearby Cook County suburbs, with the work done by licensed and insured plumbing contractors who hold a City of Chicago license for work inside the city. This guide is for owners whose service line has just been replaced, or is about to be, and who are deciding what to do with the pipe on the other side of the wall.

Key takeaways

- A new copper service does not change the pipe inside. Galvanized inside is still galvanized.
- The new line may enter at a different spot, with a new meter and shutoff, which can mean a reroute to the old main.
- Upsizing the service can help a repiped house but can affect the Homeowner-Initiated fee waiver. Confirm first.
- The interior connection, reroute and wall repair are the owner's cost under every City program.
- Two projects, two permits. The waiver needs the service line request to stand alone.

## What a new service line changes, and what it does not

The service line is the buried pipe from the water main under the street to the building. Since January 2023, Illinois law has required that a lead service line be fully replaced, public and private sides, and Chicago’s replacements are copper. When it is done, water arrives at the basement through new pipe, with a meter installed if the building had none.

Everything after that point is the house’s own system. If the supply piping inside is galvanized steel, it still has the rust and scale that narrowed it over decades, and it still has the threaded joints where the wall is thinnest. A new service does nothing to that. The [cornerstone guide to galvanized pipes in Chicago homes](https://chicagolakerepiping.com/guide/galvanized-pipes-chicago-homes/) explains how that pipe fails.

There is a lead question as well, covered in the [galvanized requiring replacement guide](https://chicagolakerepiping.com/guide/galvanized-requiring-replacement/). EPA treats a galvanized service line downstream of lead as needing replacement because its rough inside wall can hold lead particles and release them later, even after the lead pipe is gone. The federal rule applies to service lines, not to interior plumbing, so this is an inference rather than a rule: the galvanized pipe inside a house that was fed by a lead service for decades was exposed to the same water. A water test, free from the City through 311, shows what reaches the tap. After any service line work, the City recommends flushing the lines and using filters certified to NSF/ANSI 53 for lead for the first three months.

## A new entry point, meter and shutoff

The new line does not always come in where the old one did. Homeowners report the City or a contractor bringing a new copper line through the foundation at a different spot, and older houses can show an old, cut-off intake next to the new one. Where the entry moves, three things follow:

- **A new main shutoff and meter setting** at the new entry, which become the starting point of the interior system.
- **A reroute** from the new entry to wherever the old interior main begins, which is new pipe in the basement.
- **A decision about the old intake**, which should be cut and capped so that nothing is left connected to it.

Homeowners report that the City brings the new line in and that the reroute, along with any wall, floor and landscaping repair, is left to them. One owner whose leaking line was replaced free said all they had to do was have the new copper ready in the basement to connect to. The [main water line and shutoff](https://chicagolakerepiping.com/main-water-line-shutoff-replacement/) page covers the valve and the interior main.

## Upsizing the service line

Chicago’s plumbing code sets a minimum water service of 1 inch nominal. An old lead line can be smaller, and narrowed inside, so a replacement is the natural moment to think about size. A larger service helps when the house needs it: a [two-flat](https://chicagolakerepiping.com/two-flat-repiping/), a second bathroom, or upper floors that lose pressure when another fixture runs. It does not fix narrowed pipe inside the house, which is why a new service and an old galvanized interior can leave the top floor no better.

Size also touches the money. The Homeowner-Initiated program waives the permit fees for a standalone full replacement. Owners in Hyde Park reported, in Inside Climate News coverage, that they did not qualify for the waiver because they upsized the line, and described the requirements as extremely confusing. Before choosing a larger size, ask the Department of Buildings how it will treat the application, and keep the answer in writing. In Oak Park, the Village asks for a water service upgrade worksheet with permit submittals and requires a new meter for an upgraded service.

## Who pays for what

| Work | Who pays under City programs |
| --- | --- |
| Service line from the main into the building | Free under Equity or Breaks and Leaks; the owner’s contractor under Homeowner-Initiated, with City permit fees waived |
| Connection to the main | The City connects it under Homeowner-Initiated |
| Water meter | Free from the City if none is in place |
| Restoration outside | Agreed with the contractor before work starts; the City advises reviewing how much restoration will be performed |
| Reroute from a new entry to the old main | The owner |
| Interior piping | The owner; no City, state or federal program found pays for it |
| Wall, floor and finish repair inside | The owner |

The City’s Breaks and Leaks page draws the line plainly: leaks in interior plumbing, the piping more than two feet from where the service enters the house, are not covered by City programs. The [lead service line cost guide](https://chicagolakerepiping.com/guide/lead-service-line-replacement-cost-chicago/) has the full program details.

## Sequencing two permits

These are two projects with two sets of permits. The service line runs through the City’s water permit process, and the Homeowner-Initiated waiver requires the fee waiver request to be standalone, not made with a home renovation or expansion. The interior repipe goes through the Department of Buildings’ Express Permit Program at $150 per dwelling unit for repair or in-kind replacement; any work on the meter needs a separate water permit. The [Chicago repiping permit guide](https://chicagolakerepiping.com/guide/chicago-repiping-permit/) covers that application.

Three orders are possible:

| Order | Works well when | Watch for |
| --- | --- | --- |
| Service line first, then repipe | The entry point and meter location may change | The interior stays galvanized until the second job |
| Repipe first, then service line | Interior pipe is failing now and the service line date is unknown | The new interior main must meet the future entry; agree the connection point first so nothing moves twice |
| Both close together, separate permits | One plan, one set of basement openings | Confirm with the Department of Buildings that the interior permit does not affect the waiver |

Whichever order you choose, plan both before starting either. The new service decides where water enters, and the interior design decides what it connects to.

## When a repipe is worth it and when it is not

A repipe after a service line replacement makes sense when the interior is galvanized, when the upper floors lose flow with another fixture running, when rusty water shows up at the first draw, or when the house is about to be opened anyway. The [low water pressure guide](https://chicagolakerepiping.com/guide/low-water-pressure-old-chicago-house/) covers the static pressure and flow tests that tell interior restriction from service problems, and the [rusty water guide](https://chicagolakerepiping.com/guide/rusty-brown-water-from-tap/) sorts out discoloration.

It may not be needed when the visible interior pipe is copper, flow holds at the top floor, and the only work is connecting the new service cleanly. In between sits a [partial repipe](https://chicagolakerepiping.com/partial-repiping/): the basement main and the first stretch of pipe from the new entry, leaving copper branches that are already sound. A Chicago homeowner’s account shows the risk of skipping the question: after a new line was connected to a triplex with old steel inside, the upper units lost water, and the building was replumbed the next week in 3/4 inch Type L [copper](https://chicagolakerepiping.com/copper-repiping/).

Start with what is on the far side of the meter. The [guide to identifying your water pipes](https://chicagolakerepiping.com/guide/how-to-identify-your-water-pipes/) shows how to check it, and a walk-through from the new meter to the top floor turns it into a scope. Call the number on this page or use the estimate form.

## Questions about this guide

### If I upsize my service line during replacement, do I still get the fee waiver?

Not necessarily. The City's Homeowner-Initiated waiver applies to a standalone full lead line replacement, and homeowners in Hyde Park reported in news coverage that they did not qualify after upsizing their line. Ask the Department of Buildings how a larger line will be treated before you choose the size, and get the answer in writing.

### Who pays to connect a new lead service line to the pipes inside my house?

The owner. The City's programs bring a new copper line into the building and set a meter. Homeowners report that the reroute from a new entry point to the old piping, the interior connection and any wall or floor repair fall to them. No City, state or federal program found pays for interior piping.

### Should I repipe before or after my lead service line is replaced?

Plan both before doing either. The new service decides where water enters, where the main shutoff and meter sit, and what the interior piping connects to. Doing the service first lets the repipe start from a fixed point. Doing the interior first can work if the connection point is agreed in advance, so nothing has to move twice.

## Related service

### Lead service line replacement

A full replacement of the buried water service from the main to the building, with the City's free programs checked first and the new line's basement tie-in planned with the piping it feeds.

## More guides

- Cost Guide [How much does lead service line replacement cost in Chicago?](https://chicagolakerepiping.com/guide/lead-service-line-replacement-cost-chicago/)What the City says a full replacement is worth, who gets one free, what the Homeowner-Initiated waiver covers and leaves out, the inside-the-house work no program pays for, and what nearby suburbs offer.
- Learn [What does 'galvanized requiring replacement' mean in Chicago?](https://chicagolakerepiping.com/guide/galvanized-requiring-replacement/)The label on Chicago's service line inventory describes the pipe from the street, not the pipes in your walls. Here is where it comes from, why galvanized is treated like lead, and what to do with it.
- Learn [Galvanized pipes in Chicago homes: what to do about them](https://chicagolakerepiping.com/guide/galvanized-pipes-chicago-homes/)How to tell whether a Chicago bungalow, two-flat or greystone home still has galvanized steel supply pipe, what its symptoms do and do not prove, and how Chicago's code, permits and lead rules shape the fix.
- Learn [Why is the water pressure low in my old Chicago house?](https://chicagolakerepiping.com/guide/low-water-pressure-old-chicago-house/)Weak water flow upstairs has more than one possible cause, and a repipe only fixes one of them. Here is the order to rule them out, from the street to the shower head.
- Learn [Do you need a permit to repipe a house in Chicago?](https://chicagolakerepiping.com/guide/chicago-repiping-permit/)What the Department of Buildings' Express permit covers when repiping a Chicago building, what pushes a job into plan review, the documents a riser or condo job needs, and what the suburbs do differently.