Illinois · population 7,699
Lead pipes in Marengo, IL
37 lead or galvanized lines to replace
Most of Marengo (population 7,699) gets its water from Marengo. That system reported 37 lead and 0 galvanized-requiring-replacement service lines out of 2,554, with 914 more of unknown material.
1.4% of Marengo's service lines are lead or galvanized requiring replacement, lower than the Illinois average (17%) and lower than the national average (3.1%).
- Lead 1.4%
- Galvanized (replace) 0%
- Unknown 36%
- Non-lead 63%
Latest lead test for Marengo (Jan 2026–Dec 2028): not detected 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 Marengo.
Water systems serving Marengo
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 Marengo
The counts above cover the whole water system. To see whether your line is lead, look up your address on Marengo'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
- Hampshire23 lead + galv. lines
- Huntley14 lead + galv. lines
- Lakewoodno lead reported
- Genoa175 lead + galv. lines
- Bull Valley304 lead + galv. lines
- Crystal Lake1,422 unknown
- Pingree Groveno lead reported
- Poplar Groveno lead reported
Check another water system
Questions
Does Marengo, IL have lead pipes?
Yes. Marengo, which serves Marengo, reported 37 lead and 0 galvanized-requiring-replacement service lines, plus 914 of unknown material.
Who supplies water to Marengo?
EPA's service area maps place most of Marengo in Marengo's service area (PWSID IL1110650). Union also serves parts of the city or nearby areas.
How do I check whether my Marengo home has a lead service line?
Search your address on Marengo'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 Marengo 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 Marengo whether your street is scheduled and whether it covers the private side.