Illinois · population 19,138
Lead pipes in Deerfield, IL
276 lead or galvanized lines to replace
Most of Deerfield (population 19,138) gets its water from Deerfield. That system reported 276 lead and 0 galvanized-requiring-replacement service lines out of 6,387, with 1,396 more of unknown material.
4.3% of Deerfield's service lines are lead or galvanized requiring replacement, lower than the Illinois average (17%) and higher than the national average (3.1%).
- Lead 4.3%
- Galvanized (replace) 0%
- Unknown 22%
- Non-lead 74%
Latest lead test for Deerfield (Jan 2026–Jun 2026): 4.8 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 Deerfield.
Water systems serving Deerfield
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| DeerfieldMain system | 276 | 0 | 1,396 | 4.3% |
| Highland ParkServes nearby areas | 1,740 | 33 | 1 | 17% |
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 Deerfield
The counts above cover the whole water system. To see whether your line is lead, look up your address on Deerfield'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
- Bannockburn1 lead + galv. lines
- Riverwoodsno lead reported
- Highland Park1,773 lead + galv. lines
- Northbrook314 lead + galv. lines
- Highwood271 lead + galv. lines
- Lincolnshireno lead reported
- Wheelingno lead reported
- Lake Forest250 lead + galv. lines
Check another water system
Questions
Does Deerfield, IL have lead pipes?
Yes. Deerfield, which serves Deerfield, reported 276 lead and 0 galvanized-requiring-replacement service lines, plus 1,396 of unknown material.
Who supplies water to Deerfield?
EPA's service area maps place most of Deerfield in Deerfield's service area (PWSID IL0974340). Highland Park also serves parts of the city or nearby areas.
How do I check whether my Deerfield home has a lead service line?
Search your address on Deerfield'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 Deerfield 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 Deerfield whether your street is scheduled and whether it covers the private side.