Illinois · population 48,881
Lead pipes in Plainfield, IL
128 lead or galvanized lines to replace
Most of Plainfield (population 48,881) gets its water from Plainfield. That system reported 115 lead and 13 galvanized-requiring-replacement service lines out of 16,440, with 21 more of unknown material.
0.8% of Plainfield's service lines are lead or galvanized requiring replacement, lower than the Illinois average (17%) and lower than the national average (3.1%).
- Lead 0.7%
- Galvanized (replace) <0.1%
- Unknown 0.1%
- Non-lead 99%
Latest lead test for Plainfield (Jan 2026–Jun 2026): not detected 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 Plainfield.
Water systems serving Plainfield
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| PlainfieldMain system | 115 | 13 | 21 | 0.8% |
| NapervilleServes nearby areas | 265 | 28 | 29 | 0.6% |
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 Plainfield
The counts above cover the whole water system. To see whether your line is lead, look up your address on Plainfield'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
- Crest Hill138 lead + galv. lines
- Shorewoodno lead reported
- Oswegono lead reported
- Bolingbrookno lead reported
- Joliet307 lead + galv. lines
- Rockdale14 lead + galv. lines
- Naperville293 lead + galv. lines
- Montgomeryno lead reported
Check another water system
Questions
Does Plainfield, IL have lead pipes?
Yes. Plainfield, which serves Plainfield, reported 115 lead and 13 galvanized-requiring-replacement service lines, plus 21 of unknown material.
Who supplies water to Plainfield?
EPA's service area maps place most of Plainfield in Plainfield's service area (PWSID IL1970800). Naperville also serves parts of the city or nearby areas.
How do I check whether my Plainfield home has a lead service line?
Search your address on Plainfield'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 Plainfield 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 Plainfield whether your street is scheduled and whether it covers the private side.