Illinois · population 5,625
Lead pipes in Northfield, IL
85 lead or galvanized lines to replace
Most of Northfield (population 5,625) gets its water from Northfield. That system reported 85 lead and 0 galvanized-requiring-replacement service lines out of 2,060, with 6 more of unknown material.
4.1% of Northfield's service lines are lead or galvanized requiring replacement, lower than the Illinois average (17%) and higher than the national average (3.1%).
- Lead 4.1%
- Galvanized (replace) 0%
- Unknown 0.3%
- Non-lead 96%
Latest lead test for Northfield (Jan 2026–Jun 2026): 21 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, 1 health-based, 1 still open for Northfield.
Water systems serving Northfield
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| NorthfieldMain system | 85 | 0 | 6 | 4.1% |
| GlenviewServes nearby areas | 383 | 44 | 1,391 | 2.6% |
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 Northfield
The counts above cover the whole water system. To see whether your line is lead, look up your address on Northfield'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
- Winnetka1,083 lead + galv. lines
- Glencoe528 lead + galv. lines
- Glenview427 lead + galv. lines
- Wilmette2,125 lead + galv. lines
- Kenilworth245 lead + galv. lines
- Northbrook314 lead + galv. lines
- Morton Grove3,108 lead + galv. lines
- Skokie6,349 lead + galv. lines
Check another water system
Questions
Does Northfield, IL have lead pipes?
Yes. Northfield, which serves Northfield, reported 85 lead and 0 galvanized-requiring-replacement service lines, plus 6 of unknown material.
Who supplies water to Northfield?
EPA's service area maps place most of Northfield in Northfield's service area (PWSID IL0312100). Glenview also serves parts of the city or nearby areas.
How do I check whether my Northfield home has a lead service line?
Search your address on Northfield'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 Northfield 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 Northfield whether your street is scheduled and whether it covers the private side.