Illinois · population 56,531
Lead pipes in Oak Lawn, IL
2,706 lead or galvanized lines to replace
Most of Oak Lawn (population 56,531) gets its water from Oak Lawn. That system reported 2,209 lead and 497 galvanized-requiring-replacement service lines out of 17,012, with 47 more of unknown material.
16% of Oak Lawn's service lines are lead or galvanized requiring replacement, about the same as the Illinois average (17%) and higher than the national average (3.1%).
- Lead 13%
- Galvanized (replace) 2.9%
- Unknown 0.3%
- Non-lead 84%
Latest lead test for Oak Lawn (Jan 2026–Jun 2026): 9.3 ppb at the 90th percentile, against a 15 ppb federal action level. Full test history.
Compliance record: EPA lists 1 Lead and Copper Rule violation since 2015 for Oak Lawn.
Water systems serving Oak Lawn
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Oak LawnMain system | 2,209 | 497 | 47 | 16% |
| Chicago RidgeServes nearby areas | 0 | 0 | 0 | 0% |
Matched from EPA water system service area boundaries and the cities each system reports serving. Edges of the city may be served by a neighboring system; your water bill names your utility.
Check your address in Oak Lawn
The counts above cover the whole water system. To see whether your line is lead, look up your address on Oak Lawn's official inventory. Utilities had to make these public by October 16, 2024.
No map yet? Do the 2-minute scratch and magnet test.
Protect your drinking water
If your line is lead, galvanized or unknown, use a filter certified to NSF/ANSI 53 for lead for drinking, cooking and baby formula, and use only cold water.
Choosing a lead-certified filter · Testing your water · Replacement cost
Nearby cities
- Chicago Ridgeno lead reported
- Hometownno lead reported
- Burbank35 lead + galv. lines
- Evergreen Park5,981 lead + galv. lines
- Worth6 unknown
- Alsipno lead reported
- Bridgeviewno lead reported
- Merrionette Park10 unknown
Check another water system
Questions
Does Oak Lawn, IL have lead pipes?
Yes. Oak Lawn, which serves Oak Lawn, reported 2,209 lead and 497 galvanized-requiring-replacement service lines, plus 47 of unknown material.
Who supplies water to Oak Lawn?
EPA's service area maps place most of Oak Lawn in Oak Lawn's service area (PWSID IL0312220). Chicago Ridge also serves parts of the city or nearby areas.
How do I check whether my Oak Lawn home has a lead service line?
Search your address on Oak Lawn's service line inventory map. You can also scratch the pipe where water enters your home: lead is soft, dull gray, scratches to shiny silver and doesn't attract a magnet.
When will lead pipes in Oak Lawn be replaced?
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask Oak Lawn whether your street is scheduled and whether it covers the private side.