Illinois · population 8,614
Lead pipes in Rock Falls, IL
364 lead or galvanized lines to replace
Most of Rock Falls (population 8,614) gets its water from Rock Falls. That system reported 3 lead and 361 galvanized-requiring-replacement service lines out of 4,428, with 0 more of unknown material.
8.2% of Rock Falls's service lines are lead or galvanized requiring replacement, lower than the Illinois average (17%) and higher than the national average (3.1%).
- Lead <0.1%
- Galvanized (replace) 8.2%
- Unknown 0%
- Non-lead 92%
Latest lead test for Rock Falls (Jan 2026–Dec 2028): 3.1 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 Rock Falls.
Water systems serving Rock Falls
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Rock FallsMain system | 3 | 361 | 0 | 8.2% |
| IL American-SterlingServes nearby areas | 23 | 337 | 2,393 | 4.9% |
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 Rock Falls
The counts above cover the whole water system. To see whether your line is lead, look up your address on Rock Falls'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
Check another water system
Questions
Does Rock Falls, IL have lead pipes?
Yes. Rock Falls, which serves Rock Falls, reported 3 lead and 361 galvanized-requiring-replacement service lines, plus 0 of unknown material.
Who supplies water to Rock Falls?
EPA's service area maps place most of Rock Falls in Rock Falls's service area (PWSID IL1950450). IL American-Sterling also serves parts of the city or nearby areas.
How do I check whether my Rock Falls home has a lead service line?
Search your address on Rock Falls'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 Rock Falls 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 Rock Falls whether your street is scheduled and whether it covers the private side.