Illinois · population 55,460
Lead pipes in Mount Prospect, IL
727 lead or galvanized lines to replace
Most of Mount Prospect (population 55,460) gets its water from Mount Prospect. That system reported 700 lead and 27 galvanized-requiring-replacement service lines out of 11,654, with 65 more of unknown material.
6.2% of Mount Prospect's service lines are lead or galvanized requiring replacement, lower than the Illinois average (17%) and higher than the national average (3.1%).
- Lead 6.0%
- Galvanized (replace) 0.2%
- Unknown 0.6%
- Non-lead 93%
Latest lead test for Mount Prospect (Jan 2026–Dec 2028): 2.2 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 Mount Prospect.
Water systems serving Mount Prospect
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Mount ProspectMain system | 700 | 27 | 65 | 6.2% |
| Des PlainesServes nearby areas | 1,497 | 1,578 | 5,634 | 18% |
| IL American-Chicago SuburbanServes 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 Mount Prospect
The counts above cover the whole water system. To see whether your line is lead, look up your address on Mount Prospect'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
- Prospect Heightsno lead reported
- Des Plaines3,075 lead + galv. lines
- Arlington Heights3,832 lead + galv. lines
- Rolling Meadows143 unknown
- Wheelingno lead reported
- Elk Groveno lead reported
- Glenview427 lead + galv. lines
- Park Ridge3,121 lead + galv. lines
Check another water system
Questions
Does Mount Prospect, IL have lead pipes?
Yes. Mount Prospect, which serves Mount Prospect, reported 700 lead and 27 galvanized-requiring-replacement service lines, plus 65 of unknown material.
Who supplies water to Mount Prospect?
EPA's service area maps place most of Mount Prospect in Mount Prospect's service area (PWSID IL0311980). Des Plaines, IL American-Chicago Suburban also serve parts of the city or nearby areas.
How do I check whether my Mount Prospect home has a lead service line?
Search your address on Mount Prospect'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 Mount Prospect 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 Mount Prospect whether your street is scheduled and whether it covers the private side.