Smithboro, IL
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2022-2024). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
About Smithboro
Smithboro serves about 188 people through 75 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Bond County, Illinois. EPA system ID: IL0050250; phone on file: 618-780-1883. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is down 12.9 ppb from 12.9 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Smithboro is 12.9 ppb across 3 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2021 | 12.9 ppb over 10 |
| 2018 | 0 (not detected) |
How Smithboro compares
Of the 1,744 Illinois systems with a lead result, the median latest reading is 0 ppb; 22 are over 15 ppb right now and 152 have gone over at some point. Smithboro's reported as 0 (not detected) sits at the 8th percentile in Illinois and the 15th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Bond County
8 other systems share Bond County; 4 of them have a higher latest lead result than Smithboro. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Greenville | 8,310 | 14 ppb |
| Bond/Madison Water Company | 6,645 | 0 (not detected) |
| Pocahontas | 697 | 0 (not detected) |
| Mulberry Grove | 548 | 3.9 ppb |
| Sorento | 429 | 3.1 ppb |
| Panama | 343 | 3 ppb |
| Donnellson | 216 | 0 (not detected) |
| Country View Mhc | 173 | 0 (not detected) |
Next steps for Smithboro, IL
Look up your address in Smithboro's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Smithboro whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. The lead result guide covers how utilities pick the homes they sample. A zero today does not rule out a jump later - the rules are tightening in 2027.