Illinois · population 29,918
Lead pipes in Niles, IL
1,399 lead or galvanized lines to replace
Most of Niles (population 29,918) gets its water from Niles. That system reported 1,399 lead and 0 galvanized-requiring-replacement service lines out of 8,571, with 5,789 more of unknown material.
16% of Niles'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 16%
- Galvanized (replace) 0%
- Unknown 68%
- Non-lead 16%
Latest lead test for Niles (Jan 2026–Jun 2026): 9.9 ppb at the 90th percentile, against a 15 ppb federal action level. Full test history.
Compliance record: EPA lists no Lead and Copper Rule violations since 2015 for Niles.
Water systems serving Niles
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| NilesMain system | 1,399 | 0 | 5,789 | 16% |
| Park RidgeServes nearby areas | 3,121 | 0 | 5,530 | 25% |
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 Niles
The counts above cover the whole water system. To see whether your line is lead, look up your address on Niles'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
- Morton Grove3,108 lead + galv. lines
- Park Ridge3,121 lead + galv. lines
- Skokie6,349 lead + galv. lines
- Glenview427 lead + galv. lines
- Rosemontno lead reported
- Lincolnwood1,097 lead + galv. lines
- Harwood Heights206 lead + galv. lines
- Norridge46 lead + galv. lines
Check another water system
Questions
Does Niles, IL have lead pipes?
Yes. Niles, which serves Niles, reported 1,399 lead and 0 galvanized-requiring-replacement service lines, plus 5,789 of unknown material.
Who supplies water to Niles?
EPA's service area maps place most of Niles in Niles's service area (PWSID IL0312010). Park Ridge also serves parts of the city or nearby areas.
How do I check whether my Niles home has a lead service line?
Search your address on Niles'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 Niles 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 Niles whether your street is scheduled and whether it covers the private side.