1. Main vs. service line

A water main is the big pipe under the street. A service line is the small pipe from the main into your building. DWM manages 4,300 miles of water mains and 4,600 miles of sewer mains, 12 pumping stations and two water cribs^[1].

The lead problem is mostly in service lines. Lead-Safe Chicago says the city has almost 400,000 lead service lines^[2] and about 412,000 known or suspected lines in its state plan^[4].

Explain it like I’m 12: The main is the highway; the service line is your driveway. The driveway is the part that’s often made of lead.

2. Is my house likely to have one?

Lead-Safe Chicago says that if you live in a house or two-flat built before 1986, there is a high likelihood your service line is lead unless it was replaced during a renovation^[2]. Fixing it means digging on both the City side and the property side.

Explain it like I’m 12: Older house? Good chance the little pipe is lead. Newer house? Probably not.

3. The rules and the clocks

The City’s FY2027 lead plan sets a target of about 8,300 lines a year starting in 2027, which works out to roughly 50 years to finish^[3][4].

The Sun-Times reported that the federal EPA’s faster rule would require nearly 20,000 a year starting in 2027, about 30 years faster than the state-based plan^[6].

Explain it like I’m 12: Two referees set two different finish lines, and the federal one is much sooner.

4. Where the money comes from

In November 2023 the U.S. EPA announced a $336 million WIFIA loan to help Chicago remove up to 30,000 lead pipes and update water mains^[5].

In 2025 reporters found that much of the borrowed money had not been spent yet; WBEZ/Sun-Times reported only about $70–$90 million drawn, with the City planning to spend faster in 2026^[8].

Explain it like I’m 12: Borrowing money is one step. Spending it on pipes in the ground is the step that counts.

5. How the work gets bid

DWM uses multi-year term agreements by district and then issues work orders. Its 2026 bid outlook listed a $2M small-business block package (2Q 2026), $15M individual lead replacement across 8 districts (3Q), $15M block-level replacement across 8 districts (3Q) and $20M water main plus lead replacement across 8 districts (3Q)^[9].

The 2026 Capital Improvement list shows 75 water-main replacement projects and 47 sewer project areas^[10].

Explain it like I’m 12: The City hires contractors for a few years at a time, then sends them street by street.

6. Opening the door for small firms

In January 2026 the City awarded four Small Business Initiative lead-line contracts totaling over $1.67 million to three small local minority- and women-owned firms^[7].

Explain it like I’m 12: Smaller jobs help new local companies get experience so they can bid on bigger ones.

7. What homeowners can do

Lead-Safe Chicago lists free full replacement (plus a free meter) for income-eligible homeowners, free replacement when a lead line has a leak or break (call 311) or is affected by City main work, free replacement for licensed daycares in priority areas, and permit-fee waivers when a homeowner hires their own plumber^[2].