Illinois · population 1,595
Lead pipes in Thomson, IL
55 lead or galvanized lines to replace
Most of Thomson (population 1,595) gets its water from Thomson. That system reported 8 lead and 47 galvanized-requiring-replacement service lines out of 284, with 137 more of unknown material.
19% of Thomson's service lines are lead or galvanized requiring replacement, about the same as the Illinois average (17%) and higher than the national average (3.1%).
- Lead 2.8%
- Galvanized (replace) 17%
- Unknown 48%
- Non-lead 32%
Latest lead test for Thomson (Jan 2022–Dec 2024): 0.6 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 Thomson.
Water systems serving Thomson
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| ThomsonMain system | 8 | 47 | 137 | 19% |
| Thomson Maximum Security CenterAlso serves parts of the city | 0 | 0 | 0 | – |
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 Thomson
The counts above cover the whole water system. To see whether your line is lead, look up your address on Thomson'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
- Prophetstown965 unknown
- Sterling360 lead + galv. lines
- Rock Falls364 lead + galv. lines
- Carbon Cliffno lead reported
- Colonano lead reported
- Moline4,732 lead + galv. lines
- Oregon72 lead + galv. lines
- Rock Island207 lead + galv. lines
Check another water system
Questions
Does Thomson, IL have lead pipes?
Yes. Thomson, which serves Thomson, reported 8 lead and 47 galvanized-requiring-replacement service lines, plus 137 of unknown material.
Who supplies water to Thomson?
EPA's service area maps place most of Thomson in Thomson's service area (PWSID IL0150350). Thomson Maximum Security Center also serves parts of the city or nearby areas.
How do I check whether my Thomson home has a lead service line?
Search your address on Thomson'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 Thomson 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 Thomson whether your street is scheduled and whether it covers the private side.