Illinois · population 28,825
Lead pipes in McHenry, IL
304 lead or galvanized lines to replace
Most of McHenry (population 28,825) gets its water from McHenry. That system reported 304 lead and 0 galvanized-requiring-replacement service lines out of 8,066, with 0 more of unknown material.
3.8% of McHenry's service lines are lead or galvanized requiring replacement, lower than the Illinois average (17%) and about the same as the national average (3.1%).
- Lead 3.8%
- Galvanized (replace) 0%
- Unknown 0%
- Non-lead 96%
Latest lead test for McHenry (Jan 2026–Jun 2026): 6.7 ppb at the 90th percentile, against a 15 ppb federal action level. Full test history.
Compliance record: EPA lists 2 Lead and Copper Rule violations since 2015 for McHenry.
Water systems serving McHenry
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| McHenryMain system | 304 | 0 | 0 | 3.8% |
| Aqua Illinois-McHenry ShoresServes nearby areas | 0 | 1 | 221 | 0.2% |
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 McHenry
The counts above cover the whole water system. To see whether your line is lead, look up your address on McHenry'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
- Bull Valley304 lead + galv. lines
- Wonder Lakeno lead reported
- Johnsburg1,392 unknown
- Prairie Grove1,422 unknown
- Island Lakeno lead reported
- Oakwood Hills78 unknown
- Volono lead reported
- Crystal Lake1,422 unknown
Check another water system
Questions
Does McHenry, IL have lead pipes?
Yes. McHenry, which serves McHenry, reported 304 lead and 0 galvanized-requiring-replacement service lines, plus 0 of unknown material.
Who supplies water to McHenry?
EPA's service area maps place most of McHenry in McHenry's service area (PWSID IL1110600). Aqua Illinois-McHenry Shores also serves parts of the city or nearby areas.
How do I check whether my McHenry home has a lead service line?
Search your address on McHenry'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 McHenry 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 McHenry whether your street is scheduled and whether it covers the private side.